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Re: XFS unhappy with large holey loopback and syncs

To: Andi Kleen <ak@xxxxxxx>
Subject: Re: XFS unhappy with large holey loopback and syncs
From: Steve Lord <lord@xxxxxxx>
Date: Tue, 29 Nov 2005 09:16:03 -0600
Cc: David Chinner <dgc@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <20051129145601.GF19515@xxxxxxxxxxxxx>
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Andi Kleen wrote:
On Tue, Nov 29, 2005 at 08:53:17AM -0600, Steve Lord wrote:

Andi Kleen wrote:


Yep - on x86-64. But the machine had 8GB of RAM, so if even that
runs out of memory something is wrong imho. How large allocations
would it need?

-Andi


28 bytes per extent so in this case rather a lot. This could be


Assuming it created 300k extents that would be only ~8MB. That should
be no problem for a 8GB machine.

-Andi


Well, since it wants it as a single chunk of kernel memory..... that
gets hard to do in linux. Actually it probably has one large chunk and
is doing a realloc to get a larger chunk.

Steve


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