From: Bob Marley <bobmarley@shiftmail.org>
To: "Hugo Mills" <hugo@carfax.org.uk>,
"Swâmi Petaramesh" <swami@petaramesh.org>,
"Linux Btrfs" <linux-btrfs@vger.kernel.org>
Subject: Re: BTRFS, getting darn slower everyday
Date: Sun, 09 Dec 2012 23:51:36 +0100 [thread overview]
Message-ID: <50C515F8.6020801@shiftmail.org> (raw)
In-Reply-To: <20121209113824.GE14469@carfax.org.uk>
On 12/09/12 12:38, Hugo Mills wrote:
> On Sun, Dec 09, 2012 at 12:20:46PM +0100, Swâmi Petaramesh wrote:
>> Le 09/12/2012 11:41, Roman Mamedov a écrit :
>>> CoW filesystem incurs fragmentation by its nature, not specifically snapshots.
>>> Even without snapshots, rewriting portions of existing files will write the
>>> new blocks not over the original ones, but elsewhere, thus increasing
>>> fragmentation.
>> Is it to expect that somewhere in the future, BTRFS will be able to
>> defragment itself without duplicating snapshot data ?
> In the presence of snapshots that are modified, no, it's impossible
> to fully defrag all the files.
Of course, but I would agree with the poster that it would be important
to "partially" defrag all the files, avoiding at least unneeded
fragmentation...
At least the fragmentation generated by normal writes
next prev parent reply other threads:[~2012-12-09 22:51 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 [this message]
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
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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