Questions about backup files in /var/imap/db
daniel.shera.com at shera.com
Mon Jun 16 23:53:15 EDT 2003
Ken Murchison <ken at oceana.com> said:
> Daniel Qian wrote:
> > Ken Murchison <ken at oceana.com> said:
> >>Daniel Qian wrote:
> >>>In the /var/imap/db directory of my email server I noticed several
> >>>__db.001 __db.002 __db.003 __db.004 __db.005 log.0000000001
> > mailbox.dump
> >>>I figure I may use these files to restore messages in mailboxes. But I
> >>>couldn't find any documentation as to how these files are created and
> > I
> >>>could use them to restore mailboxes. Anyone can give me some ideas how
> > they
> >>>work or point me to some resources where I can get to know how?
> >>These files are for restoring the mboxlist.db, they can not be used to
> >>restore messages. If you deleted a message file and don't have a
> >>backup, you're screwed.
> >>Kenneth Murchison Oceana Matrix Ltd.
> >>Software Engineer 21 Princeton Place
> >>716-662-8973 x26 Orchard Park, NY 14127
> >>--PGP Public Key-- http://www.oceana.com/~ken/ksm.pgp
> > How could I restore the mboxlist.db from these files? My mboxlist.db file
> > a small file but how come these __db.00X files are much larger?
> > I tried ctl_mboxlist -u < mailbox.dump but didn't succeed.
> These files are generated by checkpointing the Berkeley DB environment,
> which includes all databases using BDB. Read the documentation at
> http://www.sleepycat.com for more details on checkpointing and the log
> Kenneth Murchison Oceana Matrix Ltd.
> Software Engineer 21 Princeton Place
> 716-662-8973 x26 Orchard Park, NY 14127
> --PGP Public Key-- http://www.oceana.com/~ken/ksm.pgp
It confused me by putting all databases using BDB under a imap directory.
Anyway I am more concerned about a proper way to backup all my mailbox
messages. It seems to me that I can backup the content under these
/var/imap ; where my mailboxes.db resides
/var/spool/imap/user ; suppose I only care about the messages already in user
So even on a newly installed empty system resulted from a system crash I
would still be able to recover everything in mailboxes simply by copying back
these backup files to where they are before the crash and run a reconstruct.
Correct me if I am missing anything.
Thanks for reply
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