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Re: how to sync / commit data to disk?

To: Chris Wedgwood <cw@xxxxxxxx>
Subject: Re: how to sync / commit data to disk?
From: Nathan Scott <nscott@xxxxxxxxxx>
Date: Wed, 24 Jan 2007 09:24:29 +1100
Cc: Peter Gervai <grinapo@xxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <20070123165050.GA28720@xxxxxxxxxxxxxxxxxxxxx>
Organization: Aconex
References: <d55656c10701230716x1ae7cf49kd8a854fd73429c4f@xxxxxxxxxxxxxx> <20070123165050.GA28720@xxxxxxxxxxxxxxxxxxxxx>
Reply-to: nscott@xxxxxxxxxx
Sender: xfs-bounce@xxxxxxxxxxx
On Tue, 2007-01-23 at 08:50 -0800, Chris Wedgwood wrote:
> On Tue, Jan 23, 2007 at 04:16:59PM +0100, Peter Gervai wrote:
> > This problem seem to have arisen in grub bootloader under Debian
> > linux (and most probably everywhere else): it must be sure that the
> > copied files are there, and can be addressed by C/H/S and modified
> > there, at the given sector address.
> grub is broken
> this comes up all the time, there are various work-arounds but it
> doesn't change the fact that GRUB IS BROKEN
> it would be nice if someone would just address it from that end
> > xfs_freeze -f
> > sync
> > xfs_freeze -u
> sync before freeze (actually, I'm not sure a sync there is necessary
> but it can't hurt)

Its not necessary (would be a bug if so).

FWIW, this hack can be better achieved in a filesystem independent way
by doing a remount,ro ... remount,rw instead of freeze/thaw.



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