On 26.08.2013, at 21:23, Charles Marcus <cmar...@media-brokers.com> wrote: > On 2013-08-26 2:58 PM, Michael Grimm <trash...@odo.in-berlin.de> wrote:
>> As a very rough estimate I do estimate a 5% waste of space regarding deleted >> messages. But, my handful users are very disciplined in purging their >> deleted messages on a regular basis (I told them to do), and thus my regular >> "doveadm purge -A" runs will reduce that amount of wasted disk space to a >> minimum. >> >> Not very helpful, I know, > > Are you sure about that? There was a thread a while back (I recently posted a > response to it) about this, and it sounded like the mdbox files would *never* > be 'compacted' (reduced in size from deleted messages)... my reply was on > 8/23, thread titled "Dovecot never release preallocated space in mdbox'... I must have missed that thread, sorry. My observations are as follows: 1) if I delete mails in my mail client, mdbox files will not become reduced accordingly 2) if I do run something in my client like "remove all deleted mails from my account" (purged in client), mdbox files will not become reduced accordingly 3) if I do run "doveadm purge -A" on the server, mdbox files will become modified, see an example of a purge run a couple of minutes ago: before (all my mail, ~800 mails purged in client): -rw------- 1 vmail dovecot 104856511 Aug 14 20:20 /var/mail/mike/storage/m.77 -rw------- 1 vmail dovecot 104769054 Aug 25 03:14 /var/mail/mike/storage/m.89 -rw------- 1 vmail dovecot 104848809 Aug 24 18:33 /var/mail/mike/storage/m.90 -rw------- 1 vmail dovecot 24762837 Aug 26 21:26 /var/mail/mike/storage/m.91 after (all my mail, after "doveadm purge -A"): -rw------- 1 vmail dovecot 104856511 Aug 14 20:20 /var/mail/mike/storage/m.77 -rw------- 1 vmail dovecot 104803218 Aug 26 21:26 /var/mail/mike/storage/m.92 -rw------- 1 vmail dovecot 104802874 Aug 26 21:26 /var/mail/mike/storage/m.93 -rw------- 1 vmail dovecot 21580496 Aug 26 21:26 /var/mail/mike/storage/m.94 Thus, from my point of view one needs to run "doveadm purge -A" on a regular basis *and* educate users to purge deleted mails in their clients on a regular basis as well. (I hope I didn't misunderstand you right from the beginning.) Regards, Michael
