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From: Hubert Kario <hka@qbs.com.pl>
To: Kaspar Schleiser <kaspar@schleiser.de>
Cc: Freddie Cash <fjwcash@gmail.com>, linux-btrfs@vger.kernel.org
Subject: Re: Synching a Backup Server
Date: Tue, 25 Jan 2011 18:43:20 +0100	[thread overview]
Message-ID: <201101251843.21037.hka@qbs.com.pl> (raw)
In-Reply-To: <4D3F087F.20905@schleiser.de>

On Tuesday, January 25, 2011 18:29:35 Kaspar Schleiser wrote:
> On 01/22/2011 02:55 PM, Hubert Kario wrote:
> >> It looks like ZFS, Btrfs, and LVM should work in similar manners, =
but
> >> the overloaded terminology (pool, volume, sub-volume, filesystem a=
re
> >> different in all three) and new terminology that's only in Btrfs i=
s
> >> confusing.
> >=20
> > With btrfs you need to have *a* filesystem, once you have it, you c=
an add
> > and remove disks/partitions from it, no need to use 'mkfs.btrfs', j=
ust
> > 'btrfs'.
>=20
> That's just a design decision, right? There's no need for a "default"=
 or
> "root" subvolume.
>=20
> It should be rather easy to change btrfs so that you first have to
> create a "storage pool" which combines disks for btrfs, and on top of
> that you can create "filesystems" which are just subvolumes.
>=20
> The creation of a "storage pool" could be very similar to the current
> mkfs, just without the creation of a root subvolume.
>=20
> A new, simpler mkfs would then just create a subvolume on top of the
> "storage pool" that can be mounted.
>=20
> Regards,
> Kaspar

I'm not sure, but for btrfs to support storage pools the way ZFS does w=
ould=20
require change in disk layout.

Besides, I don't see *why* this should be done...

And as far as I know ZFS doesn't support different reduncancy levels fo=
r=20
different files residing in the same directory. You can have=20
~/1billion$-project.tar.gz with triple redundancy and ~/temp.video.mkv =
with no=20
reduncancy with btrfs...

Regards,
--=20
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawer=C3=B3w 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl
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  reply	other threads:[~2011-01-25 17:43 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
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 [this message]
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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