On Wed, Aug 08, 2007 at 07:45:04PM +0200, Malte Forkel wrote: > Nate Duehr schrieb: >> 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 > > Couldn't it make sense to do all these things - flush the cache, mark the > filesystem as ok, may be more - just before the disk is spun down? If its > not used again before shutdown, there would be no need to spin it up again. why not autofs the filesystem, then let the system unmount/mount for you as needed > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org with a > subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > >
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