From: David Woodhouse <dwmw2@infradead.org>
To: Chris Mason <chris.mason@oracle.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: block discard.
Date: Fri, 08 Aug 2008 15:10:17 +0100 [thread overview]
Message-ID: <1218204617.12232.171.camel@pmac.infradead.org> (raw)
In-Reply-To: <1218204306.12232.169.camel@pmac.infradead.org>
On Fri, 2008-08-08 at 15:05 +0100, David Woodhouse wrote:
> On Fri, 2008-08-08 at 09:56 -0400, Chris Mason wrote:
> > So you mkfs ; dd large file ; rm large file ; look for discards?
> >
> > Try rm large file ; sync ; sync; look for discards
>
> Yeah, I did that. The actual data extent isn't getting removed.
Oh, you really did mean _two_ syncs. And then yes, I see why it isn't
working; mea culpa.
__free_extent for 0xc00000-0xc65000
num_bytes 413696, map_length 8388608, stripes 1
Discard from stripe 0: 24576-808
bio too big device ftla (808 > 255)
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@intel.com Intel Corporation
next prev parent reply other threads:[~2008-08-08 14:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-08 13:43 block discard David Woodhouse
2008-08-08 13:56 ` Chris Mason
2008-08-08 14:05 ` David Woodhouse
2008-08-08 14:10 ` David Woodhouse [this message]
2008-08-08 14:13 ` Chris Mason
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