On 5. May 2021, at 15.42, Eirik Rye rye@trojka.no wrote:
Afterwards, for a couple users, we received reports that mail delivery had failed because they were over quota. When looking into it for a specific user, we noticed that the vsize reported for a particular folder (with 47k messages) was reported as being nearly 50 times larger than it's on-disk size:
root@mail02:~# doveadm mailbox status -u anonymized_user 'messages recent unseen vsize' 'anonymized/folder/name' [...] anonymized/folder/name messages=47338 recent=0 unseen=0 vsize=14335366070
However, the filesystem itself reports a much smaller size (but correct message count):
root@mail02:~# du -hd1 /home/anonymized_user/Maildir/.anonymized.folder.name/ 313M /home/anonymized_user/Maildir/.anonymized.folder.name/cur 36K /home/anonymized_user/Maildir/.anonymized.folder.name/tmp 4.0K /home/anonymized_user/Maildir/.anonymized.folder.name/new 320M /home/anonymized_user/Maildir/.anonymized.folder.name/
root@mail02:~# ls /home/anonymized_user/Maildir/.anonymized.folder.name/cur | wc -l 47338
I have tried:
doveadm force-resync -u anonymized_user- deleting the index files in the specific folder, and running
doveadm index -u anonymized_user '*'as well asdoveadm mailbox status -u anonymized_user vsize '*'- deleting all
*index*files in maildir, and runningdoveadm index -u anonymized_user '*'as well asdoveadm mailbox status -u anonymized_user vsize '*'- comparing all maildir-sizes (S=) with their actual sizes to see if there are discrepancies. There are none.
S= is the "physical size", W= is the "virtual size". quota=count / vsize calculations should be using the W= value, not the S= value.
Even after deleting the list index (dovecot.list.index) as well as the mailbox indexes, recalculating the vsize seems very quick so I feel like the incorrect vsize is being fetched from a cache somewhere instead of being recalculated..?
The sizes can also be stored in dovecot-uidlist.