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- Maybe in reply to: Dana Canfield: "Cyrus Quota vs. du"
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From: Simon Matter (no email)
Date: Wed May 02 2007 - 12:53:13 EDT
>
> On May 2, 2007, at 8:51 AM, Dana Canfield wrote:
>
>> We've been slowly phasing in mail quotas and I've discovered that
>> the quota usage reported by cyrus doesn't match a du for that same
>> user. In fact, I can't find any user where the reports *do*
>> match. Is this a sign of quota corruption, or am I overlooking
>> something about how the quotas work?
>>
>> Here are some examples to show what I'm checking:
>>
>> [root at balrog ~]# du -s /var/spool/imap/e/user/efreem
>> 1068664 /var/spool/imap/e/user/efreem
>> [root at balrog ~]# du -s /var/spool/imap/a/user/austin
>> 1178924 /var/spool/imap/a/user/austin
>>
>> [root at balrog efreem]# cyradm --user cyrus localhost
>> localhost.localdomain> lq user.efreem
>> STORAGE 904193/2000000 (45.20965%)
>> localhost.localdomain> lq user.austin
>> STORAGE 703056/1000000 (70.3056%)
>
> The du utility reports usage in terms of blocks, not bytes. This is a
> major drawback of maildir type systems, they can have nasty partial
> block overheads.
Things like delayed expunge can also increase the difference between du
and quota.
Simon
---- 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
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