*** This bug is a duplicate of bug 1281588 ***
https://bugs.launchpad.net/bugs/1281588
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: udisks2 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1373318
Title:
Udisks2 prevents HDDs from going to standby because of polling SMART
information
Status in udisks2 package in Ubuntu:
Confirmed
Bug description:
1) Ubuntu Version:
Description: Ubuntu 14.04.1 LTS
Release: 14.04
2) Package Version
udisks2:
Installiert: 2.1.3-1
Installationskandidat: 2.1.3-1
Versionstabelle:
*** 2.1.3-1 0
500 http://archive.ubuntu.com/ubuntu/ trusty/main i386 Packages
100 /var/lib/dpkg/status
3) What I expected to happen:
My two Seagate drives go to sleep after 10 minutes of inactivity.
4) What happened instead:
The drives stay on all the time.
The full story:
The problem is that the minimum time for the drives to go to sleep is 10
minutes, but they are kept awake by the udisks2 daemon which polls them every
10 minutes for SMART data, resetting the idle timer by doing so. Also this
might not happen to all drives, there should be a workaround.
Would be great if the patch proposed here [1] would also be integrated into
udisks2.
A more universal approach might be to make the polling interval configurable
with 0=polling disabled.
Disabling SMART for the disks works partially:
a) The following UDEV flags don't have any effect:
E: ID_ATA_FEATURE_SET_SMART=0
E: ID_ATA_FEATURE_SET_SMART_ENABLED=0
E: UDISKS_DISABLE_POLLING=1
E: UDISKS_IGNORE=1
b) The following works:
(Note: without killing the daemon, according to "udisksctl monitor" it keeps
polling.
By polling, the SMART support is reactivated, which seems to be some
unexpected behaviour from libatasmart [2])
sudo killall udisksd
sudo smartctl --smart=off /dev/sdb
# verify
sudo smartctl --all /dev/sdb | grep "SMART support"
I think it is quite a bad workaround to kill the deamon after every reboot to
be able to diable SMART. And disabling SMART is not good either, but it would
be fine for me as workaround.
[1] https://www.libreoffice.org/bugzilla/show_bug.cgi?id=26508
[2] can be verified with
sudo smartctl --smart=off /dev/sdb
sudo smartctl --all /dev/sdb | grep "SMART support"
sudo skdump --overall /dev/sdb
sudo smartctl --all /dev/sdb | grep "SMART support"
PS:
This is mainly about the old udisks1, but may provide some additional
information:
https://www.libreoffice.org/bugzilla/show_bug.cgi?id=26508
This is about gnome-disk-utility, but the underlying problem seems udisks2
https://bugzilla.redhat.com/show_bug.cgi?id=1047339
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