dovecot - Jul 2012 - incremental backups of maildir via rsync

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi folks,

I would like to do incremental backups of the users' maildir
directories to a dedicated backup host (using "rsync -SHa"
and rsnapshot).

Problem is: Dovecot bloats the incremental backup by changing
the file names again and again.

Is there some way to tell Dovecot to keep meta information
separate from the file names?


Any helpful comment would be highly appreciated.

Harri
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iEYEARECAAYFAlADpIsACgkQUTlbRTxpHjdS+ACgkPRnzRD2jrcz09kQx9jj9j5v
Y1UAniJdRa14hc53gLbxkuBPbx5V5BCh
=6nvA
-----END PGP SIGNATURE-----

On 07/16/2012 01:20 AM, Harald Dunkel wrote:
> Is there some way to tell Dovecot to keep meta information
> separate from the file names?
If yes, then it's no longer maildir.

> I would like to do incremental backups of the users' maildir
> directories to a dedicated backup host (using "rsync -SHa"
> and rsnapshot).
dont use it.

use rsync -b option. It is MUCH MUCH BETTER.

i use it regularly.

Split your rsync session if you have huge amount of users or rsync would 
be taking enormous amount of RAM and have larger chance to fail.
> Problem is: Dovecot bloats the incremental backup by changing
> the file names again and again.
I didn't observe that except when moving from "new" to
"cur"

but --detect-renamed fixes it.
>
> Is there some way to tell Dovecot to keep meta information
> separate from the file names?
>
it already do this.

exclude dovecot indexes from backup



PS. rsync backup is what i use regularly. Except none of my servers are 
purely mail server.

Am 16.07.2012 07:20, schrieb Harald Dunkel:
> Hi folks,
> 
> I would like to do incremental backups of the users' maildir
> directories to a dedicated backup host (using "rsync -SHa"
> and rsnapshot).
> 
> Problem is: Dovecot bloats the incremental backup by changing
> the file names again and again.
> 
> Is there some way to tell Dovecot to keep meta information
> separate from the file names?
> 
> 
> Any helpful comment would be highly appreciated.
> 
> Harri
> 
dsync backup ,may the better the solution in your case

-- 
Best Regards
MfG Robert Schetterer

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Robert,

On 07/16/12 08:46, Robert Schetterer wrote:
> 
> dsync backup ,may the better the solution in your case
> 
I will surely try. This looks very promising.


Many thanx

Harri
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iEYEARECAAYFAlAE7JoACgkQUTlbRTxpHjdtzwCfWMX0KGYQTOTzPAJd3VCULGzP
e/oAn0Vj0nJE3Z+Qmz1ehxz3cJZ7Zhn3
=/f/4
-----END PGP SIGNATURE-----