From: Chris Mason <chris.mason@oracle.com>
To: Tomasz Chmielewski <mangoo@wpkg.org>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: how can I copy files bigger than ~32 GB when using compress-force?
Date: Mon, 4 Oct 2010 16:37:43 -0400 [thread overview]
Message-ID: <20101004203743.GH5090@think> (raw)
In-Reply-To: <4CAA3872.3080106@wpkg.org>
On Mon, Oct 04, 2010 at 10:26:26PM +0200, Tomasz Chmielewski wrote:
> I'm trying to copy a ~220 GB file from a ext4 to btrfs filesystem
> with 336 GB free space on it. System is running 2.6.36-rc6.
>
> File size on a ext4 filesystem:
>
> # ls -l srv1-backup.qcow2
> -rw-r--r-- 1 root root 219564146688 2010-09-26 21:56 srv1-backup.qcow2
>
>
> Unfortunately it fails when only about 32 GB is copied (with
> compress-force mount option enabled).
I'm assuming this works without compress-force? I can make a guess at
what is happening, the compression forces a relatively small extent
size, and this is making our worst case metadata reservations get upset.
Does it happen with any 32gb file that doesn't compress well?
-chris
next prev parent reply other threads:[~2010-10-04 20:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-04 20:26 how can I copy files bigger than ~32 GB when using compress-force? Tomasz Chmielewski
2010-10-04 20:37 ` Chris Mason [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-10-04 21:42 Tomasz Chmielewski
2010-10-04 22:28 ` Chris Mason
2010-10-05 4:12 ` Chester
2010-10-05 6:16 ` Tomasz Chmielewski
2010-10-12 11:12 ` Tomasz Chmielewski
2010-10-12 15:01 ` Tomasz Chmielewski
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