On 1.7.2014 13:45, Leonardo Rodrigues wrote:
Em 01/07/14 00:16, Charles Cazabon escreveu:
deoren Dovecot-mailing-list@whyaskwhy.org wrote:
Right now I'm using LVM snapshots + tarballs for daily backups, but I'd like to get better coverage for incremental changes that occur throughout the day. The size of existing content is low, but (small) changes are frequent. If you actually want to preserve those increments (as opposed to just keeping an rsync mirror up-to-date), I like rdiff-backup. It handles maildirs well because of the one-message-per-file design.
Some may agree with me, some may disagree. But for my Maildirbackups, i usually exclude the files "dovecot.index*".
On the most common situations, you'll need to restore just one orother mailbox, so rebuilding those indexes wont kill the server. And by excluding these, i could save 10-15% of backup space on some cases with virtually no disadvantage.
And on a worst case scenario, where i would need to restore thewhole server and mailboxes, things will already be screwed, so knowing that dovecot would be harder on I/O for rebuilding the indexes will be just another problem :)
That really depends, rebuilding indexes can increase your downtime for hours, so it may be better to pay a bit for extra storage space instead of not being paid at all by your customers.