David Mayo wrote: > We have just started transferring the first mailboxes onto our new Cyrus > IMAP 2.3.13 server running on Solaris 10. Delayed expunge seems to work > fine but I've noticed a strange phenomenon with delayed delete on mailboxes. > > We have set up cyrus to delete expunged emails and deleted mailboxes > after 7 days: > > delprune cmd="cyr_expire -E 3 -D 7 -X 7" at=0400 > > It appears to be deleting emails 7 days after they have been expunged, > so this looks fine: > > ... > > It's just the first entry I'm concerned by: > > Dec 11 04:00:00 imap-1.bath.ac.uk cyr_expire[29491]: [ID 956378 > mail.notice] Expunged 4662 messages from DELETED.user.usera.BUCS.IT > discussion list.4B2123D3 > > This mailbox was only deleted yesterday: > > Dec 10 16:37:39 sauber.bath.ac.uk imap[11321]: [ID 630590 mail.notice] > Deleted mailbox user.usera.BUCS.IT discussion list > > The mailbox was moved to the right area of the IMAP tree but all the > messages were removed after just one day. The messages in the mailbox > were not marked for deletion after being moved. Worse still, it hasn't > even kept the messages on the filesystem: > > imap-1 $ ls -la /mail/02/DELETED/user/usera/BUCS/IT\ discussion\ > list/4B2123D3/ > total 21441 > drwx------ 2 cyrus cyrus 12 Dec 11 04:00 . > drwx------ 3 cyrus cyrus 3 Dec 10 16:37 .. > -rw------- 1 cyrus cyrus 27366 Feb 17 2009 4861. > -rw------- 1 cyrus cyrus 3151 May 31 2009 5007. > -rw------- 1 cyrus cyrus 2543 Jun 15 10:04 5025. > -rw------- 1 cyrus cyrus 2396 Jun 15 11:45 5026. > -rw------- 1 cyrus cyrus 2366 Jul 29 09:46 5084. > -rw------- 1 cyrus cyrus 4 Dec 11 04:00 cyrus.cache > -rw------- 1 cyrus cyrus 536 Dec 10 16:37 cyrus.expunge > -rw------- 1 cyrus cyrus 175 Dec 10 16:37 cyrus.header > -rw------- 1 cyrus cyrus 96 Dec 11 04:00 cyrus.index > -rw------- 1 cyrus cyrus 10734041 Dec 11 02:00 cyrus.squat > > (squatter is run at 2am, cyr_expire at 4am, which explains the size of > cyrus.squat) > > There were emails newer and older than those ones there, so I'm not sure > why those 5 were kept. Running unexpunge on the mailbox resulted in this: > > imap-1 $ unexpunge -l "DELETED.user.usera.BUCS.IT discussion list.4B2123D3" > UID: 4861 > Size: 27366 > Sent: Tue Feb 17 12:00:00 2009 > Recv: Tue Feb 17 10:47:12 2009 > Expg: Thu Dec 10 16:37:39 2009 > Segmentation Fault (core dumped) > > [imap-1][/] # pstack /var/tmp/core.unexpunge > core '/var/tmp/core.unexpunge' of 516: unexpunge -l > DELETED.user.usera.BUCS.IT discussion list.4B2123D3 > 08058317 list_expunged (8046734, 8134898, 5, fea50000) + 186 > 080599df main (3, 8047a5c, 8047a6c) + 941 > 08057f84 _start (3, 8047b58, 8047b62, 8047b65, 0, 8047b9a) + 80 > > Is the deleted mailbox code considered reliable? Should we be pruning > these using a different method? I'm happy to supply more information if > it would lead to this being better understood and/or fixed. I have been doing more testing on this by deleting some of my own mailboxes. Each time, all the messages are removed from the mailbox and most or all of them are deleted from the filesystem too by cyr_expire the first time it runs after the mailbox has been deleted. I tried setting the 'expire' annotation to '99' on the DELETED hierarchy yesterday but the emails in the mailbox were still all deleted. Tonight I have removed the -D 7 switch from cyr_expire to see if that fixes things. Is anyone else using delayed delete for mailboxes? Does cyr_expire leave the mailboxes untouched after a mailbox has been deleted? Are other people running cyr_expire from within cyrus.conf ? It would be nice to know if other people are seeing this or if it's something unique to our setup. Regards, Dave. David Mayo Networks/Systems Administrator University of Bath Computing Services, UK Tel: +44 1225 38 6046 Email: D.J.Mayo@xxxxxxxxxx ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
