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adelolmo / hd-idle

Hard Disk Idle Spin-Down Utility
GNU General Public License v3.0
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Unexpected spin up of snapraid parity disk #120

Closed zz0rk closed 3 days ago

zz0rk commented 3 days ago

Behavior: hd-idle unexpectedly spun up parity disk on 11/08 although disk has not been accessed since 11/04. Snapraid did not initiate a sync and the parity disk is not being shared (NFS or SMB) or written to by any other process.

Expected behavior: hd-idle should not spin up parity disk unless it's being accessed.

Thank you

Debian 12 hd-idle version: 1.21 / 2023-10-22 snapraid version: v12.3

Log: /var/log# cat hd-idle.log date: 2024-11-08, time: 07:37:50, disk: /dev/disk/by-id/ata-HGST_HUH721010ALE604_2TJE7KJD, running: 3601, stopped: 51723 date: 2024-11-08, time: 11:08:53, disk: /dev/disk/by-id/ata-HGST_HUH721010ALE604_2TJE7KJD, running: 3600, stopped: 9063

Parity drive: ls -latr /mnt/raid/disk-00-parity/ total 8568933508 drwx------ 2 root root 16384 Mar 31 2024 lost+found drwxr-xr-x 3 root root 4096 Mar 31 2024 . drwxrwxr-x 7 root users 4096 Apr 16 2024 .. -rw------- 1 root root 8774585155584 Nov 4 15:52 snapraid.parity

zz0rk commented 3 days ago

hd-idle: /etc/default/hd-idle START_HD_IDLE=true

parity

HD_IDLE_OPTS="-i 0 -c ata -s 0 -l /var/log/hd-idle.log -a /dev/disk/by-id/ata-HGST_HUH721010ALE604_2TJE7KJD -i 3600
adelolmo commented 3 days ago

Hi @zz0rk

hd-idle unexpectedly spun up parity disk

Sorry, but hd-idle is not able to spin up disks, it only can spin them down. You should extend the search to find the culprit.

zz0rk commented 3 days ago

Other folks who run into this issue may want to give 'fatrace' a shot. https://github.com/martinpitt/fatrace

fatrace -t -c -o /var/log/fatrace

07:38:27.584347 find(3102642): O /mnt/raid/disk-00-parity 07:38:27.584665 find(3102642): R /mnt/raid/disk-00-parity 07:38:27.584712 find(3102642): C /mnt/raid/disk-00-parity

The 'find' command was waking up my parity disk.