On Fri, 2013-02-01 at 10:43 +0100, Thibault Le Meur wrote: > I'm trying to migrate a Cyrus-Imapd serveur running on an old machine to > a new virtual machine environement and I'd like to have to guidelines on > how to proceed. > I've first thought about using the Cyrus-Imapd replication feature, but > the first import using sync_client was causing he target server to use > far more space on disk that the used space ont he original serveur. My > guess is that the hardlinks dedeuplication was not preserved during this > transfer. That is easy to check. On the target does the listing of a mailbox look the same (on the filesystem) in terms of the reference count column? ... -rw------- 1 cyrus mail 2464 Feb 1 05:00 521985. -rw------- 1 cyrus mail 2629 Feb 1 05:00 521986. -rw------- 2 cyrus mail 4441 Feb 1 05:02 521987. -rw------- 1 cyrus mail 2834 Feb 1 05:03 521988. ... The second column greater than 1 means there is hard-linking occurring, and hard-links are the backbone of duplicate suppression. Are you sure that duplicate suppression was enabled on the replica? > I don't know if this is due to the way I'v ran the tool or if > this is a limitation of sync_client itself. Can someone answer me on > this ? If sync_client is able to preserve hardlinks deduplication, what > would be the correct way to run it (I've not found the syntax expected > for the <client-list-file> in the command "sync_client -u -f > <client-list-files>" so I used a "for" loop and ran sync_client > indicidually on each user). I'm certain that is does support it; I see lots of duplicate suppression on my replica. I certainly didn't do anything special to make it replicate that way. I have "duplicatesuppression: yes" set on the replica. > Then, I've tried the rsync solution (synching the mailbox directory and > config directory), but I'm switching to a 64bits OS so I'll have to > convert the databases and import them. Is it a recommended solution ? I believe that skiplist is 32bit/64bit neutral. So convert to skiplist first, on the working server. KILL BERKELEY!! You want to do that anyway. -- Adam Tauno Williams System Administrator, OpenGroupware Developer, LPI / CNA Fingerprint 8C08 209A FBE3 C41A DD2F A270 2D17 8FA4 D95E D383 ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
