On Aug 8, 2007, at 2:54 AM, Gilles Mocellin wrote:
Le Wednesday 08 August 2007 09:44:16 Malte Forkel, vous avez écrit :
Hi,
I use a couple of LVM volumes on a MD RAID1 array for backup. These
volumes
are rarely accessed, so I use hdparm to switch the RAID disks into
standby
mode.
I noticed that the disks are forced to spin up whenever the the system
shuts down. What is causing the spin up? Is there a way to avoid this?
Thanks, Malte
I have the same "problem" with my external USB drive, used for backups.
It wakes up when the filesystem is umounted, because the cache must be
flushed.
Perhaps, should we mount and unmount the filesystem each time my backups
runs...
It's also marking the filesystem as having a clean shutdown, so fsck
doesn't try to fix it on next boot. There's no way around it unless you
want to bypass that and wait through an fsck during the next boot.
In other words, it's not a bug, it's actually doing something --
something that has to be done. It's a feature. :-)
--
Nate Duehr
nate@natetech.com