Re: Backups

2011-04-20 Thread Mark Foster
On 04/20/2011 07:42 AM, Soren Hansen wrote:
> 2011/4/20 Mark Foster :
>> Since nobody has mentioned it I'll give a plug for Rsnapshot. It works
>> well for us backing up hundreds of Linux systems. It supports hardlinks
>> and even relies on them you might say...
> 
> It relies on hard links to minimise its own storage requirements.
> However, hard link support (in the "two files that are hard links to
> the same inode will only be backed up once" sense) is disabled by
> default. See the "rsync_short_args" section in rsnapshot's man page.
> 

Good point.
In other words, use
rsync_short_args-aH
in rsnapshot.conf
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Re: Backups

2011-04-20 Thread Soren Hansen
2011/4/20 Mark Foster :
> Since nobody has mentioned it I'll give a plug for Rsnapshot. It works
> well for us backing up hundreds of Linux systems. It supports hardlinks
> and even relies on them you might say...

It relies on hard links to minimise its own storage requirements.
However, hard link support (in the "two files that are hard links to
the same inode will only be backed up once" sense) is disabled by
default. See the "rsync_short_args" section in rsnapshot's man page.

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Re: Backups

2011-04-20 Thread Mark Foster
On 04/20/2011 06:28 AM, Soren Hansen wrote:
> My only gripe with Duplicity is that it doesn't detect hard linked
> files, but I hardly ever use hard links anyway. It's also worth noting
> that even though duplicity is one of the very, very few backup tools
> that *says* it doesn't support hard links, it's far from the only one
> that doesn't actually support it. Many other backup tools are simply
> blissfully unaware of this shortcoming in them.

Since nobody has mentioned it I'll give a plug for Rsnapshot. It works
well for us backing up hundreds of Linux systems. It supports hardlinks
and even relies on them you might say...
"Using rsync and hard links, it is possible to keep multiple, full
backups instantly available. The disk space required is just a little
more than the space of one full backup, plus incrementals."
http://www.rsnapshot.org/


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Re: Backups

2011-04-20 Thread Soren Hansen
2011/4/19 Michael Terry :
> I get the sense that command line backup methods are thick on the
> ground.  Is there a backup tool that the Ubuntu Server project
> recommends?
>
> Is the program duplicity [1] (upon which Déjà Dup is based) well
> regarded in the server community?  I'm curious if there is any mindshare
> overlap at all.

I almost exclusively use Duplicity. I find its seamless integration
with GnuPG and cloud storage solutions (specifically Rackspace Cloud
Files (and hence Openstack storage) as well as Amazon S3) extremely
handy.

I used to use Bacula (and haven't completely phased it out anywhere,
but that's only due to lack of time, not missing functionality or
anything like that). I'd throw my backups on a server with lots of
space and then I'd run a script that would copy full volumes to Amazon
S3. Eventually, I got severely fed up with having to maintain this box
for temporary storage.

My only gripe with Duplicity is that it doesn't detect hard linked
files, but I hardly ever use hard links anyway. It's also worth noting
that even though duplicity is one of the very, very few backup tools
that *says* it doesn't support hard links, it's far from the only one
that doesn't actually support it. Many other backup tools are simply
blissfully unaware of this shortcoming in them.

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Re: Backups

2011-04-20 Thread Alon Swartz
Hi Michael,

On 04/19/11 17:33, Michael Terry wrote:
> Hello!  I'm doing a bit of research for my proposal for Ubuntu Desktop
> to install the GNOME-based Déjà Dup backup tool by default.  (btw,
> please cc: me)
> 
> I get the sense that command line backup methods are thick on the
> ground.  Is there a backup tool that the Ubuntu Server project
> recommends?

For server backups I'd recommend TurnKey Backup and Migration [1], a
pain-free, smart backup and migration system that just works. No
configuration required.

> Is the program duplicity [1] (upon which Déjà Dup is based) well
> regarded in the server community?  I'm curious if there is any mindshare
> overlap at all.

TKLBAM uses duplicity as its backend, so in general I'd recommend it.

Disclaimer: I'm one of the TurnKey Linux developers.

[1] https://hub.turnkeylinux.org/tour/backup/

Cheers,
Alon Swartz



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