Quoting Eric Luyten <Eric.Luyten@xxxxxxxxx>:
On Thu, January 14, 2010 8:26 pm, Wil Cooley wrote:Adam Tauno Williams wrote:Some earlier versions of Cyrus had quota calculation issues with big quotas (2GB? 4GB?) or big mailboxes. I think there is a blurb in WMOGAG about that, and what version fixed it.It happens with 2.2 crossing the 4GiB range, but not related to what he's seeing.bash-3.00$ /opt/cyrus-imap/bin/quota -f user.user1 Quota % Used Used Root 5242880 63 3303494 user.user1 bash-3.00$ /opt/cyrus-imap/bin/quota -f user.user2 Quota % Used Used Root 41943040 93 39410366 user.user2 bash-3.00$ du -sh user1 7.6G user1 bash-3.00$ du -sh user2 6.4G user2Do you have delayed expunge enabled? If so actual disk size may verywell exceed quota values - because the expunged-but-not-yet-expired messagesare still on the disk.Other possible contributors: o Squatter indexes (my estimation is that they add 50%) o Directory sizes themselves o Other cyrus.* metadata You can use something like this to calculate just the total (sorry, you need GNU du, find and xargs): find `mbpath user.user1` -type f -name \*. -print0 \ |xargs -0 du -cm|awk '/total/ { tot=tot+$1 } END { print tot "MiB" }' You need the awk if there are more files than possible for a single invocation of "du". And you can calculate the metadata overhead by negating the "-name" parameter: find `mbpath user.user1` -type f \! -name \*. -print0 \ |xargs -0 du -cm|awk '/total/ { tot=tot+$1 } END { print tot "MiB" }'On our previous Cyrus server (2.2 on Solaris 9 with UFS) I detected several multiply-linked message files (sitting in different folders/directories). Those will be counted twice/thrice/... towards the Cyrus quota but not 'du'. We were unable to find out how some IMAP clients were capable of having the server create them. (This being said, we never invested much effort into it :-) % find `mbpath user/NNNNNN` -type f \! -links 1
It's not the client but the Server doing this. See man imapd.conf
singleinstancestore: 1
If enabled, imapd, lmtpd and nntpd attempt to only write one copy
of a message per partition and create hard links, resulting in a
potentially large disk savings.
On our new server (2.3 on Solaris 10 with ZFS and basic filesystem compressionenabled) there is a ("zfs get compressratio") difference of 27 to 28 % Eric Luyten, Computing Centre VUB/ULB, postmaster. ---- 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
-------------------------------------------------------------------------------- M.Menge Tel.: (49) 7071/29-70316 Universität Tübingen Fax.: (49) 7071/29-5912Zentrum für Datenverarbeitung mail: michael.menge@xxxxxxxxxxxxxxxxxxxx
Wächterstraße 76 72074 Tübingen
Attachment:
smime.p7s
Description: S/MIME Signatur
---- 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
