Public bug reported:
Binary package hint: udisks
i have two harddisks in my laptop, one ssd with os and data and one backup hdd.
my backupscripts mount the backup hd's partition, write data, unmount the
partition again and put the hd to sleep with hdparm -Y.
this worked flawlessly in ubuntu 9.10 (although some apps, that queried all
block devices (e.g. gparted) woke it up of course).
in lucid udisks queries all hds for smart data regulary, which wakes most hds
(tested seagate and wd).
i found out, that it was udisks by using auditd to set up a monitor (auditctl
-w /dev/sdb -p rwa), waiting untill the drive spins up and then checking
"ausearch -i", which clearly indicates the problem:
type=SYSCALL msg=audit(2010-09-15 10:49:30.000:56) : arch=x86_64 syscall=open
success=yes exit=3 a0=12446c0 a1=80900 a2=0 a3=7fff38265410 items=1 ppid=2098
pid=22515 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root
sgid=root fsgid=root tty=(none) ses=4294967295 comm=udisks-helper-a
exe=/usr/lib/udisks/udisks-helper-ata-smart-collect
** Affects: udisks (Ubuntu)
Importance: Undecided
Status: New
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udisks wakes up idling, unmounted drives with smart polls
https://bugs.launchpad.net/bugs/638765
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