[Dovecot] Message size incorrect?

[Robert Schetterer]

Tristan Woudenberg - Prism Mail Solutions schrieb:
> On Tue, January 16, 2007 16:39, Timo Sirainen wrote:
>> On Tue, 2007-01-16 at 11:00 +0100, Tristan Woudenberg - Prism Mail
>> Solutions wrote:
>>> There is quite a discrepancy in the rfc822.size reported by Dovecot and
>>> the actual space it takes up on my harddisk. I know there could be some
>>> overhead here from all the dovecot* and subscription list files in my
>>> imap
>>> folders, but like I stated in my email to the SquirrelMail plugin
>>> mailing
>>> list, about 1mb for a 4.3mb maildir mailbox might be a but much.
>> RFC822.SIZE reports message's "virtual size" as it is sent to IMAP
>> clients, which means that if the maildir files contain LF-only linefeeds
>> (which is usually the case), the RFC822.SIZE increases the size by the
>> number of lines in the file (so each line ends with CRLF).
>>
>> That however only increases the size reported by the Squirrelmail
>> plugin. I don't know why it would report 1 MB less.
>>
>> How does Squirrelmail plugin's INBOX usage compare with "du -sh cur
>> new"? Do you have any files in tmp/ directories? Currently Dovecot never
>> cleans up the tmp/ directory. I guess I should add the code for that..
> 
> I already posted this on the Squirrelmail list, but the folder sizes
> plugin outputs this:
> 
> Folder Sizes
> Folder        Count        Unread        Size
> INBOX        260        19        3.2 M
> Drafts        0        0        0 k
> Sent        0        0        0 k
> Trash        0        0        0 k
> spam        0        0        0 k
> 1 Folder        0        0        0 k
> 5 Folders        260        19        3.2 M
> 
> while when I go to that maildir folder on my server:
> 
> $ du -hs useraccount
> 4.3M   useraccount
> 
> Of course there's some overhead:
> 
> du -ah | grep dovecot
> 4.0K    ./.INBOX.spam/dovecot.index.log
> 4.0K    ./.INBOX.spam/dovecot.index
> 32K     ./.INBOX.spam/dovecot.index.cache
> 4.0K    ./.INBOX.spam/dovecot-uidlist
> 4.0K    ./.Drafts/dovecot.index.log
> 4.0K    ./.Drafts/dovecot.index
> 16K     ./.Drafts/dovecot.index.cache
> 4.0K    ./.Drafts/dovecot-uidlist
> 4.0K    ./.Sent/dovecot.index.log
> 4.0K    ./.Sent/dovecot.index
> 16K     ./.Sent/dovecot.index.cache
> 4.0K    ./.Sent/dovecot-uidlist
> 4.0K    ./.Trash/dovecot.index.log
> 4.0K    ./.Trash/dovecot.index
> 20K     ./.Trash/dovecot.index.cache
> 4.0K    ./.Trash/dovecot-uidlist
> 8.0K    ./dovecot.index.log
> 4.0K    ./dovecot.index
> 120K    ./dovecot.index.cache
> 8.0K    ./dovecot-uidlist
> 
> du -h subscriptions
> 4.0K    subscriptions
> 
> 276K in total, 4.4M - 276K isn't the reported 3.2M I would guess. Also if
> I do a FETCH 1:* (RFC822.SIZE) by hand on my imap server and sort the
> results for the 10 biggest emails:
> 
> (RFC822.SIZE 57151)
> (RFC822.SIZE 57352)
> (RFC822.SIZE 57477)
> (RFC822.SIZE 57498)
> (RFC822.SIZE 57640)
> (RFC822.SIZE 57776)
> (RFC822.SIZE 58842)
> (RFC822.SIZE 60778)
> (RFC822.SIZE 61320)
> (RFC822.SIZE 79539)
> 
> 10 biggest files with du -ab
> 
> 56526   ./cur/1165969700.640.mbox:2,
> 56754   ./cur/1166710093.P5305Q0M44492.host.domain.nl:2,S
> 56943   ./cur/1165969704.640.mbox:2,
> 57151   ./cur/1165969708.640.mbox:2,
> 57498   ./cur/1165969702.640.mbox:2,
> 57640   ./cur/1165969709.640.mbox:2,
> 57830   ./cur/1168348302.H160143P8248.host.domain.nl:2,
> 59710   ./cur/1166710169.P6010Q9M768683.host.domain.nl:2,S
> 61320   ./cur/1165969694.640.mbox:2,
> 79539   ./cur/1165969642.640.mbox:2,S
> 
> Quite strange don't you think? Some files do exactly match others don't, I
> doublechecked this by grepping the output for one of these mail sizes.
> 
> Kind regards,
> 
> Tristan
> 
> 
Hi Tristan
heres my output

 ls -lh
total 4.0K
-rw------- 1 vmail vmail 1.4K Jan 14 14:25
1168781146.V811I2164003M702149.mail:2,RS

squirrel
	So, 14:25 	A 	adsf 	1.4 k
sqplugin folder size
INBOX	1	0	1.4 k

so i cant see any failure

Regards


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