From: Eric Sandeen <sandeen@sandeen.net>
To: Eric Sandeen <sandeen@sandeen.net>,
Jan Wagner <jwagner@kurp.hut.fi>,
xfs@oss.sgi.com
Subject: Re: mkfs.xfs with a 9TB realtime volume hangs
Date: Sun, 11 Jan 2009 07:46:24 -0600 [thread overview]
Message-ID: <4969F830.1060209@sandeen.net> (raw)
In-Reply-To: <20090111103528.GA8071@disturbed>
Dave Chinner wrote:
> On Sat, Jan 10, 2009 at 03:13:23PM -0600, Eric Sandeen wrote:
>> With the default 4k extent size this takes forever (the man page claims
>> default is 64k, maybe this got broken at some point).
>
> It got changed a few years back by Nathan, IIRC.
Yep, I found the commit yesterday, it was for buffered IO's benefit on
the rt subvol, to reduce unwritten extent conversion IIRC.
I was going to follow up w/ the commit etc yesterday, but the mailing
list was down (again, sigh - this is indicative of sgi's staunch
commitment to xfs, I'm sure) so had nothing to reply to.
-Eric
> I bet the time
> being taken a result of the blow-out in bitmap size caused by reducing
> the extent size. Given it is non-linear, it may have something to do
> with cache sizes as well. e.g buftarg hashes not large enough.
>
> Cheers,
>
> Dave.
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prev parent reply other threads:[~2009-01-11 13:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-14 10:41 mkfs.xfs with a 9TB realtime volume hangs Jan Wagner
2009-01-10 21:13 ` Eric Sandeen
2009-01-11 10:35 ` Dave Chinner
2009-01-11 13:46 ` Eric Sandeen [this message]
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