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On Friday 02 March 2012, Thorsten Schnebeck wrote:
> Am Freitag 02 M=E4rz 2012, 21:16:35 schrieb Ingo Kl=F6cker:
> > On Thursday 01 March 2012, Thorsten Schnebeck wrote:
> > > Am Donnerstag 01 M=E4rz 2012, 23:05:28 schrieb Thorsten Schnebeck:
> > > > Hi,
> > > >=20
> > > > I had the challenge to restore mail-data from local backup to a
> > > > (IMAP)-server.
> > >=20
> > > ups, wrong mailing list - but the IMAP server IS of course a
> > > Kolab server - and maybe a Kolab + Kontact User has already a
> > > fine solution for my challenge
> >=20
> > Do I understand correctly that you've lost the mail-data on the
> > IMAP server and therefore want to restore it from the Akonadi
> > cache on the client?
>=20
> So far I have not lost mail, but I would like to know if I could
> reuse Akonadi cache as restore data. As every client has daily
> backups this can be a interesting second source for data restoring.

Hmm. Unless the IMAP server is not under your control I don't understand=20
why you are keen on restoring your mail from Akonadi's cache. Anyway,=20
=2E..

To answer your question: Akonadi's cache is a cache. Just as any other=20
cache there are no guarantees whatsover with regard to the content of=20
the cache. Having said this you can probably still restore mail from a=20
fully cached IMAP account in Akonadi. There are just no tools to support=20
you.


> In the past I had a restore strategy from old kmail. When upgrading
> the clients to a newer KDE and kmail2 in the future I would like to
> know now how to improve/change these kind strategies. Therefor I
> start this challenge.

I recommend developing a different backup strategy. Clients shouldn't be=20
involved in a backup strategy for a server.


> BTW, I restored mail for an account with older server backup data
> missing the ~20 latest mails, run cyrreconstruct, copied the "lost
> mails" from Akonadi as described and rerun cyrreconstruct. Now in
> Horde-webmail "sort by date" is broken but all mails are there.

This would still be possible provided Akonadi has fully cached the new=20
mail. OTOH, there is probably a whole lot of better solutions for=20
providing a backup of the latest mails that are missing in the server=20
backup, e.g. a second mail server that all incoming mail is=20
automatically forwarded to. This would scale even for a large number of=20
clients. But if you only have one client then it's probably not worth=20
the effort.


Regards,
Ingo

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