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From: Freddie Cash <fjwcash@gmail.com>
To: Gordan Bobic <gordan@bobich.net>
Cc: linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Synching a Backup Server
Date: Thu, 6 Jan 2011 13:39:46 -0800	[thread overview]
Message-ID: <AANLkTim0PnMb4nzHxbpP-BVq_hRQYNWBpm9MYdmSv8jH@mail.gmail.com> (raw)
In-Reply-To: <4D262EED.6030809@bobich.net>

On Thu, Jan 6, 2011 at 1:06 PM, Gordan Bobic <gordan@bobich.net> wrote:
>>> Unfortunately, we don't use btrfs or LVM on remote servers, so ther=
e's
>>> no snapshotting available during the backup run. =C2=A0In a perfect=
 world,
>>> btrfs would be production-ready, ZFS would be available on Linux, a=
nd
>>> we'd no longer need the abomination called LVM. =C2=A0:)
>
> As a matter of fact, ZFS _IS_ available on Linux:
> http://zfs.kqinfotech.com/

"Available", "usable", and "production-ready" are not synonymous.  :)
ZFS on Linux is not even in the experimental/testing stage right now.

ZFS-fuse is good for proof-of-concept stuff, but chokes on heavy
usage, especially with dedupe enabled.  We tried it for a couple weeks
to see what was available in ZFS versions above 14, but couldn't keep
it running for more than a day or two at a time.  Supposedly, things
are better now, but I wouldn't trust 15 TB of backups to it.  :)

The Lawrence-Liverpool ZFS module for Linux doesn't support ZFS
filesystems yet, only ZFS volumes.  It should be usable as an LVM
replacement, though, or as an iSCSI target box.  Haven't tried it yet.

The Middle-East (forget which country it's from) ZFS module for Linux
is in the private beta stage, but only available for a few distros and
kernel versions, and is significantly slower than ZFS on FreeBSD.
Hopefully, it will enter public beta this year, it sounds promising.
Don't think I'd trust 15 TB of backups to it for at least another
year, though.

If btrfs gets dedupe, "nicer" disk management (it's hard to use
non-pooled storage now), a working fsck (or similar), and integration
into Debian, then we may look at that as well.  :)

--=20
=46reddie Cash
fjwcash@gmail.com
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  reply	other threads:[~2011-01-06 21:39 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-06 17:35 Synching a Backup Server Carl Cook
2011-01-06 19:16 ` Freddie Cash
2011-01-06 19:34   ` Marcin Kuk
     [not found]   ` <AANLkTik-rhXAHW18id4WMMtdqXkicvzTZ47+2r6YMuY0@mail.gmail.com>
2011-01-06 19:47     ` Freddie Cash
2011-01-06 20:07       ` C Anthony Risinger
2011-01-06 20:13         ` Freddie Cash
2011-01-06 20:21           ` C Anthony Risinger
2011-01-06 21:06             ` Gordan Bobic
2011-01-06 21:39               ` Freddie Cash [this message]
2011-01-06 21:44         ` Carl Cook
2011-01-06 21:53           ` Gordan Bobic
2011-01-06 21:58           ` Freddie Cash
2011-01-06 22:26             ` Carl Cook
2011-01-06 22:29               ` Gordan Bobic
2011-01-06 23:07               ` Carl Cook
2011-01-07 16:14                 ` Hubert Kario
2011-01-06 23:15               ` Fajar A. Nugraha
2011-01-06 21:42   ` Carl Cook
2011-01-06 21:52     ` Freddie Cash
2011-01-07 16:20       ` Hubert Kario
2011-01-09 11:46         ` Alan Chandler
2011-01-09 13:54           ` Fajar A. Nugraha
2011-01-09 15:32             ` Alan Chandler
2011-01-09 17:59               ` Freddie Cash
2011-01-09 18:30                 ` Hugo Mills
2011-01-09 20:57                   ` Alan Chandler
2011-01-09 22:01                     ` Hugo Mills
2011-01-09 23:32                       ` Alan Chandler
2011-01-11 22:25                         ` Hugo Mills
2011-01-10  2:22                       ` Fajar A. Nugraha
2011-01-11 22:41                         ` Hugo Mills
2011-01-21 19:28                   ` Freddie Cash
2011-01-22 13:45                     ` Hugo Mills
2011-01-24 17:45                       ` Freddie Cash
2011-01-22 13:55                     ` Hubert Kario
2011-01-25 17:29                       ` Kaspar Schleiser
2011-01-25 17:43                         ` Hubert Kario
2011-01-25 17:59                           ` Freddie Cash
2011-01-25 18:36                             ` Hubert Kario
2011-01-10 13:14           ` Hubert Kario
2011-01-06 20:12 ` Fajar A. Nugraha
2011-01-06 21:43   ` Carl Cook
2011-01-06 21:43 ` Goffredo Baroncelli

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