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Re: how to flush an XFS filesystem

To: linux xfs mailing list <linux-xfs@xxxxxxxxxxx>
Subject: Re: how to flush an XFS filesystem
From: martin f krafft <madduck@xxxxxxxxxxx>
Date: Mon, 11 Jul 2005 01:46:35 +0300
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also sprach Nathan Scott <nathans@xxxxxxx> [2005.07.11.0116 +0300]:
> >   Grub menu file is changed
> >   kernel freezer is activated
> >   filesystems are left untouched
> >   system is shut down
> 
> There's no xfs_freeze(8) in that test case...?  I'm confused.
> 
> >   grub starts and /boot has not been flushed.
> 
> Hmm, AFAICT you didn't really freeze the filesystem.  The software
> suspend "freezer" is putting the system into a state such that it
> stops writing, such that kernel daemons go to "sleep" (and don't
> wakeup on their usual timer-driven way), etc.  The assumption
> there is the system will be woken up from this state at some point
> not switched off and cold booted.

Sorry for leaving out this vital info, I freeze (and unfreeze) right
after changing the grub menu file.

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