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From: paran@lysator.liu.se (Pär Andersson)
To: Matteo Frigo <athena@fftw.org>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: Mass-Hardlinking Oops
Date: Sat, 17 Oct 2009 00:17:28 +0200	[thread overview]
Message-ID: <87fx9jugp3.fsf@faran.nsc.liu.se> (raw)
In-Reply-To: <87my3urf75.fsf@fftw.org> (Matteo Frigo's message of "Tue, 13 Oct 2009 20:29:02 -0400")

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Matteo Frigo <athena@fftw.org> writes:

> For the record, the nnmaildir mail backend in Gnus (an Emacs package
> for reading news and email) creates multiple hardlinks to the same
> file in the same directory.  I had several thousands hardlinks at one
> time.

Gnus with nnmaildir is what I use. I wanted to test how much performance
and disk space that would be gained with my Maildirs on btrfs, but I hit
this bug instead.

> I am not saying that what Gnus does is particularly smart, but this is
> an example of a real world application that may break under btrfs.

Not smart at all, and the amount of hard links is not the only problem
with nnmaildir. But on other file systems at least it works.

Regards,
Pär Andersson

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  parent reply	other threads:[~2009-10-16 22:17 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-01 13:16 Mass-Hardlinking Oops Raskin Michael
2009-08-03 14:57 ` Chris Mason
2009-08-03 15:00   ` Tomasz Chmielewski
2009-08-03 20:01     ` Mikhail Raskin
2009-10-11 15:05       ` Pär Andersson
2009-10-11 22:43         ` Yan, Zheng 
2009-10-12  8:07           ` Tomasz Chmielewski
2009-10-12 12:47             ` Chris Mason
2009-10-13  7:07               ` Florian Weimer
2009-10-13  7:28                 ` Yan, Zheng 
2009-10-14  0:29               ` Matteo Frigo
2009-10-15 17:55                 ` Tracy Reed
2009-10-15 18:27                   ` Tomasz Chmielewski
2009-10-15 19:15                   ` Oystein Viggen
2009-10-16 22:17                 ` Pär Andersson [this message]
2009-10-12 16:16         ` jim owens
2009-10-12 17:09           ` Goffredo Baroncelli
2009-10-12 18:07             ` jim owens
2009-10-12 17:42           ` John Dong
2009-10-12 18:17             ` jim owens
2009-10-12 20:04               ` Chris Mason
2009-10-12 21:51                 ` berk walker
2009-10-13  0:31                 ` Claudio Martins
2009-10-13  3:42               ` Anthony Roberts
2009-10-13  9:08             ` Brian Brunswick
2009-10-13 17:45             ` Zach Brown
2009-10-13 20:03               ` Chris Mason
2009-10-13 20:55                 ` Zach Brown
2009-10-12 20:50           ` Tomasz Chmielewski

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