Dear Dan, > See the manpage for imapd.conf for possible formats, but for my 2.3.12 > installation, with configdirectory specified at /var/lib/cyrus (and no > customization to my *_db options), my database files are: Got it. Thanks a lot for the details. > /var/lib/cyrus/annotations.db What are "annotations"? > /var/lib/cyrus/tls_sessions.db You were saying these are transient data -- can one skip this? > /var/lib/cyrus/deliver.db This too can be skipped right? They won't affect the user's perception of his emails, mailfolders, ACLs, quotas, flags, etc. > /var/lib/cyrus/domain/e/example.org/user/j/jsmith.mboxkey > backend for mailbox keys What are mailbox keys? > /var/lib/cyrus/domain/e/example.org/user/j/jsmith.seen > /var/lib/cyrus/domain/e/example.org/user/j/jsmith.sub Yes, these two are important. > /var/lib/cyrus/domain/o/olp.net/quota/j/user.jsmith > > Some of those you may not be able to convert to flat (although I haven't > actually tried). Okay, got it. In that case, if I can't convert to/from flat, I can't safely move between dissimilar Cyrus servers. In that case, I'll have to drop that file and lose that data, to be safe. > The most straight forward way to restore from a filesystem backup is to > have a backup system available with identical libraries and Cyrus version. yes, absolutely, and that's what we offer. However, when there are disaster situations not planned for, I was wondering how far I can provision against data loss when the exact version of Cyrus is simply not available. > If not in a failed scenario, then doing an imap sync, or rolling cyrus > replication, is a safe bet. Yes, we do this too. The problem was for situations where the installation is too small to justify a second server. I have one customer who intends to deploy our product in about 200 offices all over India. Each office has less than 20 users and just one server. I'll have to provide a complete-snapshot backup facility for him onto removable media, and then provide a restore in case there's a disaster. For situations like that, I was weighing options. Thanks a lot. You've given me more details than I'd hoped for. I'll work on this now. Shuvam ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
