Regression in v1.21: Drives fail to spin down after the first wake-up cycle

[nicoh88]

Environment

• hd-idle (working): 1.05
• hd-idle (faulty): 1.21+ds-1+b8 (from the Debian 13 "Trixie" repository)
• Host OS: Proxmox VE 9 (based on Debian 13)
• Setup Specifics: Three SATA HDDs are passed through to a Debian VM using "Raw Disk Passthrough". hd-idle is running on the Proxmox host, as the guest VM cannot control the physical power state of the drives.  

Bug Description

• A specific regression is present in hd-idle version 1.21. After restarting the hd-idle service, the drives are correctly put into standby after the specified timeout. However, once the drives are woken up by any access, hd-idle fails to put them back into standby after they become idle again.
• The core issue appears to be that the daemon does not correctly recognize or process the new "active" state of the disk after the first wake-up event. Consequently, the idle timer is not reset, and no further spindown commands are sent.
• This behavior does not occur with the older version 1.05, which handles repeated spin-down cycles reliably under the exact same configuration.

Expected Behavior

• After a disk wakes up, hd-idle should detect the activity, reset its idle timer, and successfully spin the disk down again after the timeout period expires.

Actual Behavior

• hd-idle only spins the disks down once after the service starts. After the first wake-up, the disks remain permanently in the active/idle state, as confirmed by hdparm -C. A service hd-idle restart is required to trigger the spin-down cycle one more time.

Additional Context and Troubleshooting

• Workaround: Downgrading to hd-idle version 1.05 completely resolves the issue.

wget http://ftp.de.debian.org/debian/pool/main/h/hd-idle/hd-idle_1.05+ds-2+b1_amd64.deb
dpkg -i hd-idle_1.05+ds-2+b1_amd64.deb

• Troubleshooting Attempt: Adding the -c ata parameter to the HD_IDLE_OPTS in version 1.21 was attempted but had no effect. The behavior remained unchanged.
• Related Issue: This problem appears to be directly related to Issue hd-idle only works once after a reboot #123 , which describes a similar state-tracking problem.

Configuration and Logs

/etc/default/hd-idle Configuration:

START_HD_IDLE=true
# 15 Minuten
# HD_IDLE_OPTS="-l /var/log/hd-idle.log -i 0 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL -i 900 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL -i 900 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD -i 900"
# 1 Minute
#HD_IDLE_OPTS="-l /var/log/hd-idle.log -i 0 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD -i 60"
# 1 Minuten inkl. "ata"
#HD_IDLE_OPTS="-c ata -l /var/log/hd-idle.log -i 0 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD -i 60"

journalctl -u hd-idle (shows the first, successful cycle):

Aug 29 08:36:29 proxmox hd-idle[562610]: /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL spindown
Aug 29 08:36:31 proxmox hd-idle[562610]: /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL spindown
Aug 29 08:36:32 proxmox hd-idle[562610]: /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD spindown

(Note: After this initial cycle, no further spindown or spinuo events are logged, even though the disks remain active).

/etc/lvm/lvm.conf (proxmox additional):

devices {
     # added by pve-manager to avoid scanning ZFS zvols and Ceph rbds
     #global_filter=["r|/dev/zd.*|","r|/dev/rbd.*|"]
     global_filter=["r|/dev/zd.*|","r|/dev/rbd.*|", "r|/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL.*|", "r|/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL.*|", "r|/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD.*|"]
}

[adelolmo]

Hi @nicoh88
First of all, thank you for your detailed report.
Would you mind starting the service in debug mode? Just add the flag -d to the HD_IDLE_OPTS.
This will generate a lot of entries, so I don't recommend it leaving it on for a long time.
Thank you

[amk316]

i can say i have the same setup and problem

[nicoh88]

Hi @nicoh88 First of all, thank you for your detailed report.

👍

Would you mind starting the service in debug mode? Just add the flag -d to the HD_IDLE_OPTS. This will generate a lot of entries, so I don't recommend it leaving it on for a long time.

Sure. 💯

1.05 (bookworm repo)

hd-idle -d -i 0 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD -i 60
using sdc for /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL
using sdb for /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL
using sda for /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD
probing sda: reads: 57796796, writes: 68574683
probing sdb: reads: 58230355, writes: 68509523
probing sdc: reads: 57826901, writes: 68432363
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57806852, writes: 68581070
probing sdb: reads: 58239563, writes: 68516110
probing sdc: reads: 57836541, writes: 68438934
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57809684, writes: 68582040
probing sdb: reads: 58242219, writes: 68517712
probing sdc: reads: 57839677, writes: 68440536
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57809684, writes: 68582048
probing sdb: reads: 58242219, writes: 68517720
probing sdc: reads: 57839677, writes: 68440544
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586298
probing sdb: reads: 58244283, writes: 68521986
probing sdc: reads: 57841701, writes: 68444850
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586306
probing sdb: reads: 58244283, writes: 68521994
probing sdc: reads: 57841701, writes: 68444858
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586306
probing sdb: reads: 58244283, writes: 68521994
probing sdc: reads: 57841701, writes: 68444858
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
spindown: sda
probing sdb: reads: 58244283, writes: 68522002
spindown: sdb
probing sdc: reads: 57841701, writes: 68444866
spindown: sdc
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244283, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033

# execute find /mnt/raid for 30 seconds

probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244291, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244291, writes: 68522002
probing sdc: reads: 57841701, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244291, writes: 68522002
probing sdc: reads: 57841709, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57811764, writes: 68586314
probing sdb: reads: 58244291, writes: 68522002
probing sdc: reads: 57841709, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57826524, writes: 68586314
probing sdb: reads: 58256547, writes: 68522002
probing sdc: reads: 57854605, writes: 68444866
probing sdd: reads: 49901, writes: 393831033

# all three finaly active (it's annoying that the drives spin up one by one; that's what makes it so slow.)

probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
spindown: sda
probing sdb: reads: 58274867, writes: 68522002
spindown: sdb
probing sdc: reads: 57870357, writes: 68444866
spindown: sdc
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033
probing sda: reads: 57842364, writes: 68586314
probing sdb: reads: 58274867, writes: 68522002
probing sdc: reads: 57870357, writes: 68444866
probing sdd: reads: 49901, writes: 393831033

1.21 (trixie repo)

hd-idle -d -i 0 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL -i 60 -a /dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD -i 60
symlinkPolicy=0, defaultIdle=0, defaultCommand=scsi, defaultPowerCondition=0, debug=true, logFile=, devices={name=sdc, givenName=/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL, idle=60, commandType=scsi, powerCondition=0}{name=sdb, givenName=/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL, idle=60, commandType=scsi, powerCondition=0}{name=sda, givenName=/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD, idle=60, commandType=scsi, powerCondition=0}
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=6 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=6 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=6 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=6 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=12 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=12 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=12 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=12 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=18 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=18 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=18 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=18 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=24 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=24 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=24 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=24 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=30 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=30 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=30 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=30 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=36 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=36 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=36 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=36 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=42 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=42 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=42 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=42 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=48 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=48 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=48 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=48 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=54 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=54 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=54 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=false reads=32 writes=0 idleTime=60 idleDuration=54 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VDHLMYRD spindown
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=60 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAG81VEL spindown
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=60 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
/dev/disk/by-id/ata-WDC_WD80EFAX-68KNBN0_VAKKATYL spindown
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=60 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=60 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=68 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=68 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=68 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=68 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=74 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=74 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=74 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=74 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=80 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=80 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=80 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=80 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=86 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=86 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=86 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=86 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=92 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=92 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=92 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=92 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46

# execute find /mnt/raid for 30 seconds

disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=98 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=98 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=98 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=98 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=104 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=104 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=104 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=104 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=110 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=110 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=110 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=110 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=116 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=116 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=116 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=116 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=122 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=122 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=122 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=122 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=128 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=128 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=128 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=128 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46

# all three finaly active (it's annoying that the drives spin up one by one; that's what makes it so slow.)

# root@nas ~ # touch /mnt/raid/backup/test-hdidle.txt
# root@nas ~ # touch /mnt/raid/backup/test-hdidle2.txt
# root@nas ~ # touch /mnt/raid/backup/test-hdidle3.txt
# root@nas ~ # touch /mnt/raid/backup/test-hdidle4.txt
# root@nas ~ #
# root@nas ~ # df /mnt/raid/backup/
# Filesystem         1K-blocks        Used  Available Use% Mounted on
# /dev/mapper/raid 15382415780 13763474244 1618720352  90% /mnt/raid

disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=134 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=134 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=134 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=134 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=140 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=140 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=140 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=140 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=146 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=146 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=146 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=146 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=152 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=152 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=152 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=152 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=158 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=158 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=158 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=158 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=164 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=164 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=164 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=164 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=170 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=170 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=170 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=170 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=176 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=176 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=176 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=176 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=182 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=182 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=182 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=182 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=188 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=188 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=188 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=188 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=194 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=194 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=194 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=194 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=200 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=200 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=200 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=200 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=206 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=206 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=206 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=206 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=212 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=212 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=212 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=212 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=218 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=218 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=218 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=218 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=224 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=224 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=224 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=224 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=230 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=230 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=230 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=230 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=236 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=236 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=236 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=236 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=242 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=242 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=242 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=242 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=248 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=248 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=248 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=248 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=254 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=254 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=254 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=254 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=260 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=260 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=260 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=260 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=266 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=266 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=266 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=266 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=272 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=272 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=272 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=272 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=278 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=278 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=278 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=278 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sda command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=284 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdb command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=284 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdc command=scsi spunDown=true reads=32 writes=0 idleTime=60 idleDuration=284 spindown=2025-09-01T09:55:46 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46
disk=sdd command=scsi spunDown=false reads=40930 writes=393831033 idleTime=0 idleDuration=284 spindown=0001-01-01T00:00:00 spinup=2025-09-01T09:54:46 lastIO=2025-09-01T09:54:46

It's not detecting any reads or writes, which means lastIO isn't working either. That seems to be the issue, but why? What changed in version 1.05 and, more importantly, why isn't it affecting everyone?

Thanks for fixing @adelolmo. 🥇

[wumpus71]

The problem is probably caused by the usage of monitoring read/write changes on partition level instead of disk level to detect disk activity; this is listed as "extra feature" compared to the original hd-idle in the readme.

I have a Proxmox setup with one hard drive completely attached to and operated by a virtual machine. Reads/writes to this drive by that machine now only cause changes in /proc/diskstats on drive level, not in partition level:

8 32 sdc 1168641 87706 1338561985 13531368 377958 771 17055456 1634986 0 6220026 16288298 ...
8 33 sdc1 24 0 592 2 0 0 0 0 0 2 2 0 0 0 0 0 0
8 41 sdc9 20 0 160 1 0 0 0 0 0 2 1 0 0 0 0 0 0

8 32 sdc 1168703 87706 1338564161 13531770 377958 771 17055456 1634986 0 6220291 16288700 ...
8 33 sdc1 24 0 592 2 0 0 0 0 0 2 2 0 0 0 0 0 0
8 41 sdc9 20 0 160 1 0 0 0 0 0 2 1 0 0 0 0 0 0

8 32 sdc 1168762 87706 1338568353 13532171 378033 771 17058208 1635051 1 6220588 6289166 ...
8 33 sdc1 24 0 592 2 0 0 0 0 0 2 2 0 0 0 0 0 0
8 41 sdc9 20 0 160 1 0 0 0 0 0 2 1 0 0 0 0 0 0

Modified "/proc/diskstats" output. As can be seen, the stats of disk level change, the partition stats however remain constant.

Accordingly, hd-idle does not detect any activity:

Oct 31 19:55:17 asgard hd-idle[778777]: disk=sdc command=scsi spunDown=true reads=752 writes=0 idleTime=1800 idleDuration=20224 spindown=2025-10-31T14:48:15 spinup=2025-10-31T14:18:13 lastIO=2025-10-31T14:18:13

Oct 31 19:56:17 asgard hd-idle[778777]: disk=sdc command=scsi spunDown=true reads=752 writes=0 idleTime=1800 idleDuration=20284 spindown=2025-10-31T14:48:15 spinup=2025-10-31T14:18:13 lastIO=2025-10-31T14:18:13

Oct 31 19:57:17 asgard hd-idle[778777]: disk=sdc command=scsi spunDown=true reads=752 writes=0 idleTime=1800 idleDuration=20344 spindown=2025-10-31T14:48:15 spinup=2025-10-31T14:18:13 lastIO=2025-10-31T14:18:13

Hence, the behavior is as follows:

• hd-idle starts, does not detect any activity, and shuts down the drives.
• Upon access, drives spin up automatically.
• hd-idle, however, does not detect any activity, and "thinks" the drives still have spun down - forever.

So, monitoring activity on partition level does not work in this case. An option to switch between disk- and partition level would be great, however I do unfortunately not "speak" go, otherwise I'd file a change.

Hope this helps :-) !

[adelolmo]

Hi @wumpus71 @nicoh88

Calculating disk activity from the partitions was implemented in #75 to allow hd-idle to work with LUKS encrypted disks.

I could add a flag to force hd-idle to either take the stats from the disk or the partitions. The only question that I have at the moment (other than if it really solves the issue, although it can be tested, of course) is what should be the default behaviour.
At the moment I see two groups of users and the default could be different for each of them:

• Users using this hd-idle rewrite for years already and running disks with LUKS, would like to upgrade the version and keep the functionality as it was. Therefore the new flag would only introduce reading only from the disk as new feature, and it would brake hd-idle with encrypted disks.
• Users using the original hd-idle v1.5 (replaced in debian 13 by this rewrite) would expect reading the stats from disk as default. Therefore the flag would allow reading the stats from the partition as new feature.

I have some ideas, but I'd like to hear your opinions first of all.

[dallmair]

Chiming in as happy user running disks with encrypted partitions using LUKS.

As I understand it, hd-idle currently tracks either disk or partition stats. Adding an option to let users choose is an obvious solution here, but that approach also has downsides: It puts extra work and complexity on users, requires more documentation, and therefore I'd expect more "support effort" (GitHub issues).

Thus, I'm wondering whether there is an approach which "just works". How about tracking both disk and partition stats at the same time and marking a disk as spunup (and restarting the idle timer) when any of these counters change? Does that make any sense? Or am I completely off in my understanding of how hd-idle works...?

[wumpus71]

Hi adelolmo,

I have some ideas, but I'd like to hear your opinions first of all.

For me, it is a don't care. It seems that there are really not many complains about tracking partition stats, so I seems that the majority of the uses go well with the partition variant, so I would leave this as default.
Just, don't make it too complicated e.g. by guessing what variant could be correct. Then, something changes, causing the algorithm to fail w/o apparent cause, and leaving the puzzled user alone in heavy rain ... ;-).

[ambiman]

I'm also facing the same issues with PVE on Debian 13 and would appreciate an option to make it configurable 👍

[wumpus71]

Hi, any new or status update on this ?
Will there be an option to change the behavior?

[adelolmo]

So far I can only think of flag to prefer disk stats over partition stats. To be honest, this seems like a lazy way of solving the problem, but I'm scratching my head over o and over again, and can't think of a nicer solution. One of the issues I'm facing is the lack of a proper testing setup, so I'm always concern of making any changes. Also I'm dealing with some cross compilations errors. In any case, there will be a release candidate (mostly a release for all of you to test) at some point in the beginning of next year (crossing fingers).

…

On 21 December 2025 21:57:07 CET, wumpus71 ***@***.***> wrote: wumpus71 left a comment (adelolmo/hd-idle#131) Hi, any new or status update on this ? Will there be an option to change the behavior? -- Reply to this email directly or view it on GitHub: #131 (comment) You are receiving this because you were mentioned. Message ID: ***@***.***>

[adelolmo]

During the last few weeks I've focused on how to test hd-idle using real hardware and how to debug issues.
My final goal is to have a test environment where to deploy and test multiple usecases automatically on demand.
So far I have a rpi with two external HDs. How to automate running the usecases is still an open task, but I managed to quickly put together a tool that will help with debugging: https://github.com/adelolmo/hd-idle-test

If you are reading this and can make you way around compiling code (go), I'd like to ask you to give https://github.com/adelolmo/hd-idle-test a shoot and report back.
Other than exporting the recording session and sharing it (here?) I would also need and explanation of what happened during the recording (e.g. I ran hdparm -C /dev/sda at 15:12, or I boot up a VM using /dev/sdb)

I expect that I will be the only one using the tool in the future, once I get the usecases running in my local testing setup, but right now it will speed up debugging your scenarios and hopefully providing a solution that suits everybody.

Thank you everyone for your feedback :)

[adelolmo]

Hi @wumpus71

This pre-release removes partitions from the disk activity calculation. Could you please give it a try and share how it went?
It would be amazing if you could also record the activity with https://github.com/adelolmo/hd-idle-test :)
EDIT: No need to set any arguments/flags.

[wumpus71]

Hi @adelolmo

the pre-release works at it should. Here is the logfile (shortened):

hd-idle -d -i 0 -a /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K4PRV3VZ -i 20 | tee hd-idle.log

symlinkPolicy=0, defaultIdle=0, defaultCommand=scsi, defaultPowerCondition=0, debug=true, logFile=, devices={name=sdb, givenName=/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K4PRV3VZ, idle=20, commandType=scsi, powerCondition=0}, ignoreSpinDownDetection=false
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=2 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=4 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=6 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=8 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=10 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=12 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=14 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=16 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
disk=sdb command=scsi spunDown=false reads=1388968809 writes=54021024 idleTime=20 idleDuration=18 spindown=0001-01-01T00:00:00 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=0001-01-01T00:00:00 
/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K4PRV3VZ spindown
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=20 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=22 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=24 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=26 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=28 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=true reads=1388968809 writes=54021024 idleTime=20 idleDuration=30 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:17 lastIO=2026-01-11T18:17:17 lastSpunDown=2026-01-11T18:17:37 
/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K4PRV3VZ spinup
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54022096 idleTime=20 idleDuration=0 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:49 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54022096 idleTime=20 idleDuration=2 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:49 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023040 idleTime=20 idleDuration=0 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:53 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=0 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=2 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=4 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=6 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=8 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=10 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=12 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=14 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=16 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
disk=sdb command=scsi spunDown=false reads=1388969065 writes=54023320 idleTime=20 idleDuration=18 spindown=2026-01-11T18:17:37 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:17:37 
/dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K4PRV3VZ spindown
disk=sdb command=scsi spunDown=true reads=1388969065 writes=54023320 idleTime=20 idleDuration=20 spindown=2026-01-11T18:18:15 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:18:15 
disk=sdb command=scsi spunDown=true reads=1388969065 writes=54023320 idleTime=20 idleDuration=22 spindown=2026-01-11T18:18:15 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:18:15 
disk=sdb command=scsi spunDown=true reads=1388969065 writes=54023320 idleTime=20 idleDuration=24 spindown=2026-01-11T18:18:15 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:18:15 
disk=sdb command=scsi spunDown=true reads=1388969065 writes=54023320 idleTime=20 idleDuration=26 spindown=2026-01-11T18:18:15 spinup=2026-01-11T18:17:49 lastIO=2026-01-11T18:17:55 lastSpunDown=2026-01-11T18:18:15 

As can be seen. it spindows and -ups as requested.
I will now go forward with the "hd-idle-test".

Regards, Wumpus71

[wumpus71]

Hi again,

I got the hd-ide-test compiled & installed sucessfully, however hdt did not work as expected. I started hd-idle as specified in the instructions. with the same file names provided, and I was able to start the recording with ctrl-r. However, when I wanted to load a session, it either crashed (see below), or it just stated "failed to load session".
I however realized that I used go 1.24.4, the newest is 1.25.5, I will give that a try in the next days.

hdt crash log:

root@asgard:~# hdt
panic: runtime error: index out of range [-1] [recovered]
        panic: runtime error: index out of range [-1]

goroutine 1 [running]:
github.com/rivo/tview.(*Application).Run.func1()
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/application.go:319 +0x45
panic({0x77ce00?, 0xc0000d4018?})
        /usr/lib/go-1.24/src/runtime/panic.go:792 +0x132
main.main.func3(0xc000097700)
        /root/hd-idle/hd-idle-test/tui/main.go:194 +0x50a
github.com/rivo/tview.(*Flex).InputHandler.(*Box).WrapInputHandler.func2(0xc00010bb00?, 0xc0003a47d0)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/box.go:164 +0x37
github.com/rivo/tview.(*Flex).InputHandler.func1(0xc000097700, 0xc0003a47d0)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/flex.go:255 +0xd7
github.com/rivo/tview.(*Flex).InputHandler.(*Box).WrapInputHandler.func2(0xc00010bbf0?, 0x417185?)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/box.go:167 +0x50
github.com/rivo/tview.(*Flex).InputHandler.func1(0xc000097700, 0xc0003a47d0)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/flex.go:255 +0xd7
github.com/rivo/tview.(*Flex).InputHandler.(*Box).WrapInputHandler.func2(0xc00010bbc0?, 0x46eed9?)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/box.go:167 +0x50
github.com/rivo/tview.(*Flex).InputHandler.func1(0xc000097700, 0xc0003a47d0)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/flex.go:255 +0xd7
github.com/rivo/tview.(*Flex).InputHandler.(*Box).WrapInputHandler.func2(0xc00010bd40?, 0xc000027bc0?)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/box.go:167 +0x50
github.com/rivo/tview.(*Application).Run(0xc00017a000)
        /root/hd-idle/hd-idle-test/tui/vendor/github.com/rivo/tview/application.go:441 +0x962
main.main()
        /root/hd-idle/hd-idle-test/tui/main.go:267 +0x38ed

Edit: just noticed that I got some messages from htdt in the system journal, which dont't seem to be too good:

Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] POST   /record                   --> main.main.func4 (3 handlers)
Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] GET    /status                   --> main.main.func3 (3 handlers)
Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] GET    /sessions/:id             --> main.main.func2 (3 handlers)
Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] GET    /sessions                 --> main.main.func1 (3 handlers)
Jan 12 00:18:19 asgard hdtd[3017939]:  - using code:        gin.SetMode(gin.ReleaseMode)
Jan 12 00:18:19 asgard hdtd[3017939]:  - using env:        export GIN_MODE=release
Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
Jan 12 00:18:19 asgard hdtd[3017939]: [GIN-debug] [WARNING] Creating an Engine instance with the Logger and Recovery middleware already attached.
Jan 12 00:18:19 asgard systemd[1]: Started hdtd.service - Help testing hd-idle for real usecase scenarios.
Jan 12 00:18:19 asgard systemd[1]: hdtd.service: Scheduled restart job, restart counter is at 3.
Jan 12 00:18:19 asgard systemd[1]: hdtd.service: Failed with result 'exit-code'.
Jan 12 00:18:19 asgard systemd[1]: hdtd.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Jan 12 00:18:19 asgard hdtd[3017138]:         /root/hd-idle/hd-idle-test/daemon/main.go:115 +0x587
Jan 12 00:18:19 asgard hdtd[3017138]: created by main.main.func2 in goroutine 50
Jan 12 00:18:19 asgard hdtd[3017138]:         /root/hd-idle/hd-idle-test/daemon/main.go:120 +0x1ec
Jan 12 00:18:19 asgard hdtd[3017138]: main.main.func2.2()
Jan 12 00:18:19 asgard hdtd[3017138]: goroutine 53 [running]:
Jan 12 00:18:19 asgard hdtd[3017138]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0xd1c80c]
Jan 12 00:18:19 asgard hdtd[3017138]: panic: runtime error: invalid memory address or nil pointer dereference
Jan 12 00:18:19 asgard hdtd[3017138]:         /root/hd-idle/hd-idle-test/daemon/main.go:124 +0x653
Jan 12 00:18:19 asgard hdtd[3017138]: created by main.main.func2 in goroutine 50
Jan 12 00:18:19 asgard hdtd[3017138]:         /root/hd-idle/hd-idle-test/daemon/main.go:129 +0x1ec
Jan 12 00:18:19 asgard hdtd[3017138]: main.main.func2.3()
Jan 12 00:18:19 asgard hdtd[3017138]: goroutine 54 [running]:
Jan 12 00:18:19 asgard hdtd[3017138]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0xd1c44c]
Jan 12 00:18:19 asgard hdtd[3017138]: panic: runtime error: invalid memory address or nil pointer dereference
Jan 12 00:18:19 asgard hdtd[3017138]: 2026/01/12 00:18:19 open /root/.config/hdtd/1768173186/1768173191/log: no such file or directory
Jan 12 00:18:19 asgard hdtd[3017138]: 2026/01/12 00:18:19 open /root/.config/hdtd/1768173186/1768173191/stdout: no such file or directory
Jan 12 00:18:14 asgard hdtd[3017138]: [GIN] 2026/01/12 - 00:18:14 | 200 |     116.282µs |                 | GET      "/status"
Jan 12 00:18:14 asgard hdtd[3017138]: [GIN] 2026/01/12 - 00:18:14 | 200 |      91.899µs |                 | GET      "/sessions"
Jan 12 00:18:07 asgard hdtd[3017138]: [GIN] 2026/01/12 - 00:18:07 | 200 |     133.277µs |                 | GET      "/status"
Jan 12 00:18:07 asgard hdtd[3017138]: [GIN] 2026/01/12 - 00:18:07 | 200 |     142.415µs |                 | GET      "/sessions"

Jan
Regards, Wumpus71

[adelolmo]

Hi @wumpus71

Given the stacktrace, I think hd-idle is not executed as stated in the readme: # nohup /usr/sbin/hd-idle -l /var/log/hd-idle.log > /tmp/hd-idle.out
Could you check?