Message-ID: <47BA2775.1060109@sgi.com>
Date: Tue, 19 Feb 2008 11:48:53 +1100
From: Timothy Shimmin <tes@sgi.com>
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To: Jeff Breidenbach <jeff@jab.org>
CC: Hannes Dorbath <light@theendofthetunnel.de>, xfs@oss.sgi.com
Subject: Re: tuning, many small files, small blocksize
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Jeff Breidenbach wrote:
> the kernel before April is painful but I'll do it if important. Presumably
> there's no simple way to migrate a non-lazy xfs filesytem to a lazy one.
> 

Dave would know that answer.

But on IRIX we used xfs_chver...
>      Using the +c option one can enable a filesystem to use lazy counters.
>      Note that you must run xfs_repair(1M) after setting this option to build
>      the internal state that is required to support this functionality.
> 
>      Using the -c option one can disable lazy counters if it is enabled. Note
>      that you must run xfs_repair(1M) after clearing this option to ensure
>      that the internal state of the filesystem is consistent.

On Linux we have xfs_admin (wrapper around db) and the "version" command in xfs_db.
However, it looks like "version" only does: extflg, v2-logs, attr1, attr2,
but not lazy sb counters.

--Tim