From: Goffredo Baroncelli <kreijack@gmail.com>
To: Martin Steigerwald <Martin@lichtvoll.de>
Cc: linux-btrfs@vger.kernel.org,
"Swâmi Petaramesh" <swami@petaramesh.org>, Alex <alex@bpmit.com>,
"Liu Bo" <bo.li.liu@oracle.com>
Subject: Re: BTRFS, getting darn slower everyday
Date: Mon, 08 Oct 2012 00:47:07 +0200 [thread overview]
Message-ID: <5072066B.4020604@gmail.com> (raw)
In-Reply-To: <201210071644.19815.Martin@lichtvoll.de>
On 10/07/2012 04:44 PM, Martin Steigerwald wrote:
>> Plus, with respect to snapshots, isn't this going to increase a lot my
>> > used disk space ?
> I don´t think so, but I will leave this to a developer to answer.
>
IIRC the defrag is not [fully] snapshot aware, so de-frag-ging a
snapshot-ted file should break the COW link.
Liu Bo is working to patch on that: see " Btrfs: use flag EXTENT_DEFRAG
for snapshot-aware defrag" dated 2012/09/17.
Please could you clarify if you are using the "autodefrag" options when
you have the performance problem ? Are you in position to to reduce the
number of snapshot from hundreds to few ?
next prev parent reply other threads:[~2012-10-07 22:47 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-07 9:26 BTRFS, getting darn slower everyday Swâmi Petaramesh
2012-10-07 10:59 ` Martin Steigerwald
2012-10-07 14:05 ` Swâmi Petaramesh
2012-10-07 14:48 ` Martin Steigerwald
2012-10-08 6:16 ` Swâmi Petaramesh
2012-12-09 5:17 ` Jan Engelhardt
2012-12-09 10:13 ` Martin Steigerwald
2012-12-09 10:41 ` Roman Mamedov
2012-12-09 11:20 ` Swâmi Petaramesh
2012-12-09 11:38 ` Hugo Mills
2012-12-09 22:51 ` Bob Marley
2012-12-09 14:38 ` Jan Engelhardt
2012-10-07 11:02 ` Martin Steigerwald
2012-10-07 12:33 ` Alex
2012-10-07 13:19 ` Swâmi Petaramesh
2012-10-07 14:44 ` Martin Steigerwald
2012-10-07 22:47 ` Goffredo Baroncelli [this message]
2012-10-08 6:08 ` Swâmi Petaramesh
2012-10-08 11:38 ` Goffredo Baroncelli
2012-10-08 13:36 ` Swâmi Petaramesh
2012-10-08 15:50 ` Swâmi Petaramesh
2012-10-08 16:46 ` Goffredo Baroncelli
2012-10-08 6:22 ` Swâmi Petaramesh
2012-11-14 16:17 ` Peter Maloney
2012-10-07 13:00 ` Martin Steigerwald
2012-10-07 13:14 ` Swâmi Petaramesh
2012-10-07 14:41 ` Martin Steigerwald
2012-10-08 16:09 ` Josef Bacik
2012-10-08 16:15 ` Swâmi Petaramesh
2012-10-08 16:31 ` Josef Bacik
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