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 are
different in all three) and new terminology that's only in Btrfs is
confusing.
With btrfs you need to have *a*
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 are
different in all three) and new terminology
On Tuesday, January 25, 2011 18:59:39 Freddie Cash wrote:
On Tue, Jan 25, 2011 at 9:43 AM, Hubert Kario h...@qbs.com.pl wrote:
Besides, I don't see *why* this should be done...
And as far as I know ZFS doesn't support different reduncancy levels for
different files residing in the same
On Sat, Jan 22, 2011 at 5:45 AM, Hugo Mills hugo-l...@carfax.org.uk wrote:
On Fri, Jan 21, 2011 at 11:28:19AM -0800, Freddie Cash wrote:
So, is Btrfs pooled storage or not? Do you throw 24 disks into a
single Btrfs filesystem, and then split that up into separate
sub-volumes as needed?
On Fri, Jan 21, 2011 at 11:28:19AM -0800, Freddie Cash wrote:
On Sun, Jan 9, 2011 at 10:30 AM, Hugo Mills hugo-l...@carfax.org.uk wrote:
On Sun, Jan 09, 2011 at 09:59:46AM -0800, Freddie Cash wrote:
Let see if I can match up the terminology and layers a bit:
LVM Physical Volume == Btrfs
On Sun, Jan 9, 2011 at 10:30 AM, Hugo Mills hugo-l...@carfax.org.uk wrote:
On Sun, Jan 09, 2011 at 09:59:46AM -0800, Freddie Cash wrote:
Let see if I can match up the terminology and layers a bit:
LVM Physical Volume == Btrfs disk == ZFS disk / vdevs
LVM Volume Group == Btrfs filesystem ==
On Sunday 09 of January 2011 12:46:59 Alan Chandler wrote:
On 07/01/11 16:20, Hubert Kario wrote:
I usually create subvolumes in btrfs root volume:
/mnt/btrfs/
|- server-a
|- server-b
\- server-c
then create snapshots of these
On 07/01/11 16:20, Hubert Kario wrote:
I usually create subvolumes in btrfs root volume:
/mnt/btrfs/
|- server-a
|- server-b
\- server-c
then create snapshots of these directories:
/mnt/btrfs/
|- server-a
|- server-b
|- server-c
On Sun, Jan 9, 2011 at 6:46 PM, Alan Chandler
a...@chandlerfamily.org.uk wrote:
then create snapshots of these directories:
/mnt/btrfs/
|- server-a
|- server-b
|- server-c
|- snapshots-server-a
|- @GMT-2010.12.21-16.48.09
On 09/01/11 13:54, Fajar A. Nugraha wrote:
By default, when you do something like
mount /dev/sdb1 /mnt/btrfs
the default subvolume will be mounted under /mnt/btrfs. Snapshots and
subvolumes will be visible as subdirectories under it, regardless
whether it's in the root or several
On Sun, Jan 9, 2011 at 7:32 AM, Alan Chandler
a...@chandlerfamily.org.uk wrote:
I think I start to get it now. Its the fact that subvolumes can be
snapshotted etc without mounting them that is the difference. I guess I am
too used to thinking like LVM and I was thinking subvolumes where like
On 09/01/11 18:30, Hugo Mills wrote:
No, subvolumes are a part of the whole filesystem. In btrfs, there
is only one filesystem. There are 6 main B-trees that store metadata
in btrfs (plus a couple of others). One of those is the filesystem
tree (or FS tree), which contains all the
On Sun, Jan 09, 2011 at 08:57:12PM +, Alan Chandler wrote:
On 09/01/11 18:30, Hugo Mills wrote:
No, subvolumes are a part of the whole filesystem. In btrfs, there
is only one filesystem. There are 6 main B-trees that store metadata
in btrfs (plus a couple of others). One of those is
On 09/01/11 22:01, Hugo Mills wrote:
I find the wiki
also confusing because it talks about subvolumes having to be at the
first level of the filesystem, but again further up this thread
there is an example which is used for real of it not being at the
first level, but at one level down inside
On Mon, Jan 10, 2011 at 5:01 AM, Hugo Mills hugo-l...@carfax.org.uk wrote:
There is a root subvolume namespace (subvolid=0), which may contain
files, directories, and other subvolumes. This root subvolume is what
you see when you mount a newly-created btrfs filesystem.
Is there a detailed
On Friday, January 07, 2011 00:07:37 Carl Cook wrote:
On Thu 06 January 2011 14:26:30 Carl Cook wrote:
According To Doyle...
Er, Hoyle...
I am trying to create a multi-device BTRFS system using two identical
drives. I want them to be raid 0 for no redunancy, and a total of 4TB.
But in
On Thursday, January 06, 2011 22:52:25 Freddie Cash wrote:
On Thu, Jan 6, 2011 at 1:42 PM, Carl Cook cac...@quantum-sci.com wrote:
On Thu 06 January 2011 11:16:49 Freddie Cash wrote:
Also with this system, I'm concerned that if there is corruption on
the HTPC, it could be propagated to
I am setting up a backup server for the garage, to back up my HTPC in case of
theft or fire. The HTPC has a 4TB RAID10 array (mdadm, JFS), and will be
connected to the backup server using GB ethernet. The backup server will have
a 4TB BTRFS RAID0 array. Debian Testing running on both.
I
On Thu, Jan 6, 2011 at 9:35 AM, Carl Cook cac...@quantum-sci.com wrote:
I am setting up a backup server for the garage, to back up my HTPC in case of
theft or fire. The HTPC has a 4TB RAID10 array (mdadm, JFS), and will be
connected to the backup server using GB ethernet. The backup server
2011/1/6 Freddie Cash fjwc...@gmail.com:
On Thu, Jan 6, 2011 at 9:35 AM, Carl Cook cac...@quantum-sci.com wrote:
I am setting up a backup server for the garage, to back up my HTPC in case
of theft or fire. The HTPC has a 4TB RAID10 array (mdadm, JFS), and will be
connected to the backup
On Thu, Jan 6, 2011 at 11:33 AM, Marcin Kuk marcin@gmail.com wrote:
Rsync is good, but not for all cases. Be aware of databases files -
you should do snapshot filesystem before rsyncing.
We script a dump of all databases before the rsync runs, so we get
both text and binary backups. If
On Thu, Jan 6, 2011 at 1:47 PM, Freddie Cash fjwc...@gmail.com wrote:
On Thu, Jan 6, 2011 at 11:33 AM, Marcin Kuk marcin@gmail.com wrote:
Rsync is good, but not for all cases. Be aware of databases files -
you should do snapshot filesystem before rsyncing.
We script a dump of all
On Fri, Jan 7, 2011 at 12:35 AM, Carl Cook cac...@quantum-sci.com wrote:
I want to keep a duplicate copy of the HTPC data, on the backup server
Is there a BTRFS tool that would do this?
AFAIK zfs is the only opensource filesystem today that can transfer
block-level delta between two snapshots,
On Thu, Jan 6, 2011 at 12:07 PM, C Anthony Risinger anth...@extof.me wrote:
On Thu, Jan 6, 2011 at 1:47 PM, Freddie Cash fjwc...@gmail.com wrote:
On Thu, Jan 6, 2011 at 11:33 AM, Marcin Kuk marcin@gmail.com wrote:
Rsync is good, but not for all cases. Be aware of databases files -
you
On Thu, Jan 6, 2011 at 2:13 PM, Freddie Cash fjwc...@gmail.com wrote:
On Thu, Jan 6, 2011 at 12:07 PM, C Anthony Risinger anth...@extof.me wrote:
On Thu, Jan 6, 2011 at 1:47 PM, Freddie Cash fjwc...@gmail.com wrote:
On Thu, Jan 6, 2011 at 11:33 AM, Marcin Kuk marcin@gmail.com wrote:
Rsync
Unfortunately, we don't use btrfs or LVM on remote servers, so there's
no snapshotting available during the backup run. In a perfect world,
btrfs would be production-ready, ZFS would be available on Linux, and
we'd no longer need the abomination called LVM. :)
As a matter of fact, ZFS _IS_
On Thu, Jan 6, 2011 at 1:06 PM, Gordan Bobic gor...@bobich.net wrote:
Unfortunately, we don't use btrfs or LVM on remote servers, so there's
no snapshotting available during the backup run. In a perfect world,
btrfs would be production-ready, ZFS would be available on Linux, and
we'd no
On Thu 06 January 2011 11:16:49 Freddie Cash wrote:
Just run rsync on the backup server, tell it to connect via ssh to the
remote server, and rsync / (root filesystem) into /backups/htpc/ (or
whatever directory you want). Use an exclude file to exclude the
directories you don't want backed up
On Thu 06 January 2011 12:12:13 Fajar A. Nugraha wrote:
With other filesystems, something like rsync + LVM snapshot is
probably your best bet, and it doesn't really care what filesystem you
use.
I'm not running LVM though. Is this where the snapshotting ability comes from?
--
To unsubscribe
On Thu 06 January 2011 12:07:17 C Anthony Risinger wrote:
as for the DB stuff, you definitely need to snapshot _before_ rsync. roughly:
) read lock and flush tables
) snapshot
) unlock tables
) mount snapshot
) rsync from snapshot
ie. the same as whats needed for LVM:
On 01/06/2011 06:35 PM, Carl Cook wrote:
I want to keep a duplicate copy of the HTPC data, on the backup
server, and I think a regular full file copy is not optimal and may
take days to do. So I'm looking for a way to sync the arrays at some
interval. Ideally the sync would scan the HTPC
On Thu, Jan 6, 2011 at 1:42 PM, Carl Cook cac...@quantum-sci.com wrote:
On Thu 06 January 2011 11:16:49 Freddie Cash wrote:
Also with this system, I'm concerned that if there is corruption on the
HTPC, it could be propagated to the backup server. Is there some way to
address this?
On 01/06/2011 09:44 PM, Carl Cook wrote:
On Thu 06 January 2011 12:07:17 C Anthony Risinger wrote:
as for the DB stuff, you definitely need to snapshot _before_ rsync. roughly:
) read lock and flush tables
) snapshot
) unlock tables
) mount snapshot
) rsync from snapshot
ie. the same as
On Thu, Jan 6, 2011 at 1:44 PM, Carl Cook cac...@quantum-sci.com wrote:
On Thu 06 January 2011 12:07:17 C Anthony Risinger wrote:
as for the DB stuff, you definitely need to snapshot _before_ rsync.
roughly:
) read lock and flush tables
) snapshot
) unlock tables
) mount snapshot
)
On Thu 06 January 2011 13:58:41 Freddie Cash wrote:
Simplest solution is to write a script to create a mysqldump of all
databases into a directory, add that to cron so that it runs at the
same time everyday, 10-15 minutes before the rsync run is done. That
way, rsync to the backup server
On 01/06/2011 10:26 PM, Carl Cook wrote:
On Thu 06 January 2011 13:58:41 Freddie Cash wrote:
Simplest solution is to write a script to create a mysqldump of all
databases into a directory, add that to cron so that it runs at the
same time everyday, 10-15 minutes before the rsync run is done.
On Thu 06 January 2011 14:26:30 Carl Cook wrote:
According To Doyle...
Er, Hoyle...
I am trying to create a multi-device BTRFS system using two identical drives.
I want them to be raid 0 for no redunancy, and a total of 4TB.
But in the wiki it says nothing about using fdisk to set up the drive
On Fri, Jan 7, 2011 at 5:26 AM, Carl Cook cac...@quantum-sci.com wrote:
On Thu 06 January 2011 13:58:41 Freddie Cash wrote:
Simplest solution is to write a script to create a mysqldump of all
databases into a directory, add that to cron so that it runs at the
same time everyday, 10-15 minutes
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