Public bug reported:
In order to keep my data storage disks from slowly committing suicide by
unloading their heads, I have to disable APM for both of them. Usually I
would be able to do so by putting 'hdparm -B255 -S0 /dev/sdx*' in
/etc/rc.local.
Since Ubuntu 12.10, Palimpsest has a built-in function to modify APM
settings if required. Sadly, after a reboot, these settings aren't kept.
Even though the Palimpsest interface still claims APM is set to 255,
running sudo hdparm -I /dev/sdx* will show the default value of 128
again. The desired behaviour is hdparm showing 'APM = off', and, more
importantly, the disks not breaking themselves.
The only way to keep my disks from dying is by adding
/dev/sdx* {
apm = 255
spindown_time = 0
}
to /etc/hdparm.conf, as everything in /etc/rc.local seems to be ignored
as well. The problem is no different for my SSD, but it doesn't make a
difference for that one, obviously. Disabling and re-enabling the APM
settings from Palimpsest does seem to work though, but it's impossible
to do/remember that after every bootup. And forgetting to do so would
most likely lead to premature disk failure.
* 'sdx' is 'sdb' and 'sdc' in my case
ProblemType: Bug
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
Date: Sat Sep 29 15:28:24 2012
DistroRelease: Ubuntu 12.10
Package: gnome-disk-utility 3.6.0-0ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.5.0-16.24-generic 3.5.4
SourcePackage: gnome-disk-utility
Tags: quantal
Uname: Linux 3.5.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-disk-utility (Ubuntu)
Importance: Undecided
Status: New
** Tags: apm disk gnome quantal utility
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https://bugs.launchpad.net/bugs/1058623
Title:
APM settings are not persistent after a reboot
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