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Date:      Mon, 28 Jun 2010 15:31:17 +1000
From:      Peter Jeremy <peterjeremy@acm.org>
To:        =?iso-8859-1?Q?Micka=EBl?= Maillot <mickael.maillot@gmail.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: mdconfig on ZFS leaks disk space
Message-ID:  <20100628053117.GA32123@server.vk2pj.dyndns.org>
In-Reply-To: <AANLkTikRMiGw9X6hqn49F2abtFzEcwTRPxNEO53Bt1ht@mail.gmail.com>
References:  <20100625231708.GB29793@server.vk2pj.dyndns.org> <20100626141038.0d9f488a@r500.local> <AANLkTikRMiGw9X6hqn49F2abtFzEcwTRPxNEO53Bt1ht@mail.gmail.com>

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>> Peter Jeremy <peterjeremy@acm.org> wrote:
>>
>>> I recently did a quick experiment to create an 8TB UFS filesystem
>>> via mdconfig and after destroying the md and deleting the file,
>>> the disk space used by the md was not returned - even after a
>>> reboot. =A0Has anyone else seen this?

Soem further experimenting showed that send|recv does not free up
the space.

On 2010-Jun-26 18:29:41 +0200, Micka=EBl Maillot <mickael.maillot@gmail.com=
> wrote:
>what is your svn rev ?
>because r208869: Fix freeing space after deleting large files with holes
>dated: Sun Jun  6 13:08:36 2010

Thanks.  Upgrading to a recent -stable has fixed the problem.  Even
better, just booting an updated kernel and mounting the problematic
ZFS is sufficient to release the extraneous free space.

--=20
Peter Jeremy

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