Date: Wed, 23 Jan 2008 13:51:41 +1100
To: "Rene Salmon" <salmr0@bp.com>, xfs@oss.sgi.com
Subject: Re: xfs_rapair memory requirement per TB
From: "Barry Naujok" <bnaujok@sgi.com>
Organization: SGI
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On Wed, 23 Jan 2008 10:01:22 +1100, Rene Salmon <salmr0@bp.com> wrote:

> Hi,
>
> Reading the "Repairing a possibly incomplete xfs_growfs command?" thread
> this month makes me wonder if there is some type of rough formula or
> guesstimation cheat sheet to figure out how much memory and swap one
> would need for an xfs_repair given a file system with many terabytes.
>
>
> Say I have an 8TB LUN that needs an xfs_repair.  What would be the rough
> memory requirements and swap space?
>

General rule of thumb at the moment is 128MB of RAM/TB of filesystem
plus 4MB/million inodes on that filesystem.

Barry.