Backup Central

On 2012-06-24 11:51 PM, Dagurasu Dagurasu <dagurasu-forge < at > hotmail.com>
wrote:
I'll also add, in defense of the developers, that this is backup
software. Changing ANYTHING about its default behavior may cause
someone who relied on that behavior to have unintended side effects
which could have huge measurable costs. This isn't an mp3 player
program. Tinkering for every amusing feature idea is probably not
desirable.

Which simply means that for new features or behavior that changes
anything in a major way, said new feature should always be OFF by
default, with large warnings about enabling it.

Otherwise, by your argument new features that implemented major changes
would *never* get into the code.

--

Best regards,

Charles

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On Mon, Jun 25, 2012 at 03:51:14AM +0000, Dagurasu Dagurasu wrote:

I'll also add, in defense of the developers, that this is backup software. Changing ANYTHING about its default behavior may cause someone who relied on that behavior to have unintended side effects which could have huge measurable costs. This isn't an mp3 player program. Tinkering for every amusing feature idea is probably not desirable.

What's more, it's backup software that doesn't have much of a test suite.
THAT is the main reason we're so wary of changing stuff that we know
works.

--
David Cantrell | London Perl Mongers Deputy Chief Heretic

You can't spell AWESOME without ME!

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On Mon, Jun 25, 2012 at 05:01:02AM +0000, Dagurasu Dagurasu wrote:

The point is not backups with rsnapshot, the point is [btrfs is] a
naturally self-snapshotting filesystem if it works and you don't
need rsnapshot.

You'd still need something to back up your other machines and your other
filesystems, and to manage the deletion of old snapshots.

--
David Cantrell | top google result for "topless karaoke murders"

What plaything can you offer me today?

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On Mon, Jun 25, 2012 at 05:48:27AM -0400, Charles Marcus wrote:
On 2012-06-24 11:51 PM, Dagurasu Dagurasu <dagurasu-forge < at > hotmail.com>
wrote:
I'll also add, in defense of the developers, that this is backup
software. Changing ANYTHING about its default behavior may cause
someone who relied on that behavior to have unintended side effects
which could have huge measurable costs. This isn't an mp3 player
program. Tinkering for every amusing feature idea is probably not
desirable.
Which simply means that for new features or behavior that changes
anything in a major way, said new feature should always be OFF by
default, with large warnings about enabling it.

Otherwise, by your argument new features that implemented major changes
would *never* get into the code.

The best way to get new features in is to first write comprehensive
tests for what we've already got, including tests that we have (close
to) full code coverage in the tests.

rsnapshot is intended to have minimal external dependencies, and in
particular it doesn't rely (as many other perl projects do) on having
eleventy squillion perl modules installed from the CPAN. However, there
are lots of really good testing tools on the CPAN, and there's nothing
at all wrong with having *developer* and *testing* dependencies.

--
David Cantrell | Official London Perl Mongers Bad Influence

I caught myself pulling grey hairs out of my beard.
I'm definitely not going grey, but I am going vain.

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sure, it just wouldn't be rsnapshot, or not as it is now anyway.  Block level COW sure would help the outlook file issue.
-dagurasu

----------------------------------------
Date: Mon, 25 Jun 2012 13:22:26 +0100
From: david < at > cantrell.org.uk
To: rsnapshot-discuss < at > lists.sourceforge.net
Subject: Re: [rsnapshot-discuss] Feature Request: timestamping backups

On Mon, Jun 25, 2012 at 05:01:02AM +0000, Dagurasu Dagurasu wrote:

The point is not backups with rsnapshot, the point is [btrfs is] a
naturally self-snapshotting filesystem if it works and you don't
need rsnapshot.

You'd still need something to back up your other machines and your other
filesystems, and to manage the deletion of old snapshots.

--
David Cantrell | top google result for "topless karaoke murders"

What plaything can you offer me today?

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----------------------------------------
From: dagurasu-forge < at > hotmail.com
To: david < at > cantrell.org.uk; rsnapshot-discuss < at > lists.sourceforge.net
Date: Tue, 26 Jun 2012 12:33:06 +0000
Subject: Re: [rsnapshot-discuss] Feature Request: timestamping backups



You'd still need something to back up your other machines and your other
filesystems, and to manage the deletion of old snapshots.

--
David Cantrell | top google result for "topless karaoke murders">

sure, it just wouldn't be rsnapshot, or not as it is now anyway. Block level COW sure would help the outlook file issue.
-dagurasu

----------------------------------------

oh and as for other machines... really rsnapshot doesn't make rsync any easier to use than it already was anyway.  Backup scheduling and backup deletion is rsnapshots main thing of course, not remote access,.. and of those really only deletion. Cron does the backup scheduling  with no help from rsnapshot, (and cron  even does  more to help define the deletion pattern or deletion schedule, but I prefer to think of it as a pattern, because it's not actually required to have a bunch of different cron schedules to decide which backups to delete or to mess up the pattern because one was missed). I've written a few backup scripts and deletion is always the hard part, and as you point out, it still would be.
-dagurasu  



What plaything can you offer me today?

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I guess you want to run rsnapshot on machine A, but push the backups to
machine B. In this case you need to change the variable snapshot_root to
user < at > 83.212.99.52:/home/user/rsnapshot_backups

and then use
backup /path/to/important/files myfiles/

this will backup /path/to/important/files from Machine A to
/home/user/rsnapshot_backups on Machine B (83.212.99.52).

Regards Ronny

Am 26.06.2012 14:33, schrieb Dagurasu Dagurasu:
sure, it just wouldn't be rsnapshot, or not as it is now anyway. Block level COW sure would help the outlook file issue.
-dagurasu

----------------------------------------
Date: Mon, 25 Jun 2012 13:22:26 +0100
From: david < at > cantrell.org.uk
To: rsnapshot-discuss < at > lists.sourceforge.net
Subject: Re: [rsnapshot-discuss] Feature Request: timestamping backups

On Mon, Jun 25, 2012 at 05:01:02AM +0000, Dagurasu Dagurasu wrote:

The point is not backups with rsnapshot, the point is [btrfs is] a
naturally self-snapshotting filesystem if it works and you don't
need rsnapshot.
You'd still need something to back up your other machines and your other
filesystems, and to manage the deletion of old snapshots.

--
David Cantrell | top google result for "topless karaoke murders"

What plaything can you offer me today?

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Hello,

i guess you are right. Backing up to a remote machine would mean to also
call cp and rm via ssh, so rsnapshot has to be run on the destination
machine or you have to completly rework the script to work on the source
machines while backing up to another machine.

Regards Ronny

Am 30.06.2012 21:28, schrieb Nassos:
Hi Ronny! Have you ever tried this configuration before? I am looking
for a solution like the one you describe below.

But I think that the rsnapshot cannot create hard link to remote
machines thus the snapshot_root canot setted up as you discribe.

On 06/30/2012 10:52 AM, Ronny wrote:
I guess you want to run rsnapshot on machine A, but push the backups to
machine B. In this case you need to change the variable snapshot_root to
user < at > 83.212.99.52:/home/user/rsnapshot_backups

and then use
backup /path/to/important/files myfiles/

this will backup /path/to/important/files from Machine A to
/home/user/rsnapshot_backups on Machine B (83.212.99.52).

Regards Ronny





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