hdparm - disks wake up randomly

tech.fennec · n00b Joined: 02 Feb 2017 Posts: 16

I tried to set disks standby (spindown) to 20-30 mins, some disks turning off properly, and waking up only if I accessing it (by samba protocol for example), but toshiba hdd's waking up from sleep random.
Kernel 4.14.65-gentoo x86_64 SMP Mon Sep 3 21:22:44 and system updated in same date.
Only SDDM and samba (no users connected or have network drive mapped) working at test time, other services not using disk as I know. That disks only for data collecting, system installed on separate drive (what seems can't be turn off because of system logging and other system process)

TOSHIBA DT01ACA100
Disks have feature
Commands/features:
Enabled Supported:
* Power Management feature set

Tried:
hdparm -B 127 -S 241 /dev/sdd
/dev/sdd:
setting Advanced Power Management level to 0x7f (127)
setting standby to 241 (30 minutes)
APM_level = 127

Another disk hdparm said

hdparm -B 127 -S 241 /dev/sdb

/dev/sdb:
setting Advanced Power Management level to 0x7f (127)
SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 04 51 40 7f 21 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
setting standby to 241 (30 minutes)
APM_level = not supported

hdparm -S 240 /dev/sdb

/dev/sdb:
setting standby to 240 (20 minutes)

But it's turning off after 5 minutes and always waking up without reason.

fstab standard,
/mnt/toshiba ext4 defaults 0 2. for other 'data' disks too.
Please, any suggestions?

Sorry for my English.

Keruskerfuerst · Posted: Thu Sep 20, 2018 5:46 am Post subject:

Any I/O access on this specific disc ?

tech.fennec · n00b Joined: 02 Feb 2017 Posts: 16