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Re: [PATCH 3/3] Add timeout feature

To: Miklos Szeredi <miklos@xxxxxxxxxx>
Subject: Re: [PATCH 3/3] Add timeout feature
From: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Date: Tue, 8 Jul 2008 23:41:20 -0700
Cc: hch@xxxxxxxxxxxxx, miklos@xxxxxxxxxx, tytso@xxxxxxx, pavel@xxxxxxx, t-sato@xxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, dm-devel@xxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, axboe@xxxxxxxxx, mtk.manpages@xxxxxxxxxxxxxx
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Organization: Intel
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On Wed, 09 Jul 2008 08:22:56 +0200
Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

> On Wed, 9 Jul 2008, Christoph Hellwig wrote:
> > On Wed, Jul 09, 2008 at 08:13:21AM +0200, Miklos Szeredi wrote:
> > > This would mean that freeze and thaw will have to be done on the
> > > same file descriptor, but this isn't unreasonable to expect, is
> > > it?
> > 
> > It is certainly not the current use case, where you run one command
> > to freeze the filesystem and another one to unfreeze it.
> 
> So instead of
> 
>   freeze_fs mountpoint
>   backup-command
>   unfreeze_fs mountpoint
> 
> the user would have do to
> 
>   run_freezed mountpoint backup-command
> 
> I find the second one nicer, regardless of any reliability issues.

nah he needs to do

make_snapshot ; backup-command ; unref_snapshot.

freezing isn't the right solution for the backup problem ;)


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