linux-ext4 - Re: [BUG] fatal hang untarring 90GB file, possibly writeback related.

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Date:	Thu, 28 Apr 2011 17:44:39 -0500
From:	James Bottomley <James.Bottomley@...e.de>
To:	Jan Kara <jack@...e.cz>
Cc:	Colin Ian King <colin.king@...ntu.com>,
	Chris Mason <chris.mason@...cle.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ext4 <linux-ext4@...r.kernel.org>, mgorman@...ell.com
Subject: Re: [BUG] fatal hang untarring 90GB file, possibly writeback
 related.

On Fri, 2011-04-29 at 00:40 +0200, Jan Kara wrote:
> James in the meantime identified that cgroups are somehow involved.
> Are you
> using systemd by any chance? Maybe cgroup IO throttling screws us?

Yes, this is a FC15 system with systemd as the default.

See related post: it looks like disabling the memory controller is what
makes this go away.

James


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