[kdepim-users] Frequent coruptions of data base. Any remedies?

[Andras Mantia]

Stephan Diestelhorst wrote:

> Is there a reason why they are not default? If my email were POP, I
> would have lost considerable amounts of mail by this.

This is common misconception: losing the akonadi database will NOT lose your 
mails. The database stores two things:
- it acts as a cache 
- it stores metadata information (tags, extra flags)

For POP3, what you'd lose it tags. For POP3 the mail body is cached only 
temporary, it is deleted after a time anyway. Flags are stored encoded in 
the filename (well, if you have KDE 4.7.2+).

For disconnected IMAP the database stores the whole mail, but of course 
there is no data loss, as the mails are also stored on the server.

Neverthless having a corrupted database is bad, and this being a mysql bug 
puts us in a bad situation, as MySql is the most tested backend and the 
current default (sqlite is unreliable, postgres might work, although it is 
not that well tested), as makes the applications unusable and takes up 
considerable amount of time (user's time).

> The MySQL folks suggest to dump the database and manually feeding the
> data back in there, maybe AKonadi could do that?

Question is, how often? When? And that would double the amount of space you 
need in the $HOME.

BTW, is you $HOME on an NFS share? AFAIK that has problems with mysql 
databases especially on suspend/resume.

Andras
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