Package: hdparm
Version: 9.43-2
Severity: important
Mistake in /lib/udev/rules.d/85-hdparm.rules:
ACTION=="add", SUBSYSTEM=="block", KERNEL=="[sh]d[a-z]*",
RUN+="/lib/udev/hdparm"
should be
ACTION=="add", SUBSYSTEM=="block", KERNEL=="[sh]d[a-z]",
RUN+="/lib/udev/hdparm"
As it is now, the rule matches when partitions are detected by udev,
typically after the disk device, and /lib/udev/hdparm is invoked with
e.g. DEVNAME=/dev/sda2 after being invoked with DEVNAME=/dev/sda.
I'm quite confident this is not the behaviour most users expect.
Brain damage in /lib/hdparm/hdparm-functions:
hdparm_options() contains
# set our default global apm policy here.
if hdparm_try_apm "$WANTED_DISK"; then
if hdparm_is_on_battery; then
hdparm_set_option -B128
...
else
hdparm_set_option -B254
fi
fi
which causes it to emit "-B254" or "-B128" even if no stanza in
/etc/hdparm.conf matches the device name (and usually hdparm.conf has
no stanza for partitions). Since the ioctl() on the partition acts in
fact on the disk, the result is that power management is set on the disk
depending only on battery vs AC status, overriding user's preferences
listed in /etc/hdparm.conf for the disk.
As a side note: duplicating (almost) the parsing logic of
/etc/init.d/hdparm in /lib/hdparm/hdparm-functions is an efficient way
to let bugs slip through.
Best regards
g
-- System Information:
Debian Release: 8.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 3.16.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages hdparm depends on:
ii libc6 2.19-18
ii lsb-base 4.1+Debian13+nmu1
Versions of packages hdparm recommends:
pn powermgmt-base <none>
Versions of packages hdparm suggests:
pn apmd <none>
-- Configuration Files:
/etc/hdparm.conf changed:
/dev/sda {
apm = 128
apm_battery = 128
quiet
}
-- no debconf information
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