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Re: [PATCH 3/3] Add timeout feature

To: Takashi Sato <t-sato@xxxxxxxxxxxxx>
Subject: Re: [PATCH 3/3] Add timeout feature
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 29 Sep 2008 10:13:26 -0400
Cc: Ric Wheeler <rwheeler@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, axboe@xxxxxxxxx, mtk.manpages@xxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <D0B0D91F884647D6808626CDFF81E532@xxxxxxxxxxxxxxxx>
References: <20080908205337t-sato@xxxxxxxxxxxxxxx> <20080908171119.GB22521@xxxxxxxxxxxxx> <48DBFD42.6030307@xxxxxxxxxx> <D0B0D91F884647D6808626CDFF81E532@xxxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.18 (2008-05-17)
On Fri, Sep 26, 2008 at 05:52:35PM +0900, Takashi Sato wrote:
> I think that your concern is that the freezer cannot recognize the occurrence
> of a timeout and it continues the backup process and the backup data is
> corrupted finally.

What timeout should happen?  the freeze ioctl must not return until the
filesystem is a clean state and all writes are blocked.

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