From: "Aneesh Kumar K. V" <aneesh.kumar@linux.vnet.ibm.com>
To: Roland Dreier <rdreier@cisco.com>, Paul Komkoff <i@stingr.net>
Cc: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs fallocate woes
Date: Thu, 14 Jan 2010 23:56:36 +0530 [thread overview]
Message-ID: <87y6k0lezn.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <aday6k0lhpx.fsf@roland-alpha.cisco.com>
On Thu, 14 Jan 2010 09:27:38 -0800, Roland Dreier <rdreier@cisco.com> wrote:
>
> > if you run it on ext4, it will create a 4-byte file with "test" in it.
> > On btrfs, however, the file size would be 4096, and the remaining
> > space will be filled with zeroes.
>
> My fallocate man page says:
>
> Because allocation is done in block size chunks, fallocate() may
> allocate a larger range than that which was specified.
>
But with zero as the mode value it should not have updated
i_size. Looking at the latest linus tree it seems to be doing the right
thing
-aneesh
next prev parent reply other threads:[~2010-01-14 18:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-14 11:28 btrfs fallocate woes Paul Komkoff
2010-01-14 17:27 ` Roland Dreier
2010-01-14 18:24 ` Paul Komkoff
2010-01-14 18:25 ` Paul Komkoff
2010-01-14 18:26 ` Aneesh Kumar K. V [this message]
2010-01-14 19:20 ` Chris Mason
2010-01-14 20:33 ` Paul Komkoff
2010-01-19 15:18 ` Paul Komkoff
2010-01-20 7:28 ` Aneesh Kumar K. V
2010-01-20 15:13 ` Paul Komkoff
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