imap checkpoint and slow access to mailboxes

Fri Oct 7 09:09:36 EDT 2016

Hello,
Are you shure of now having a clean filesystem?
Are you shure of having a reliable hardware now?
Do you have tested backups at hand?
do you use SAN storage or at least some kind of raid or another level of data integrity?
Maybe moving data to another hardware/disks (like forensic procedures) could help a bit for hw starting point.......
After passing these steps, you could focus next on cyrus troubles, reconstructing indexes.
Unfortunately, seen info is likely to be lost on some mailboxes, or very hard to rebuild. On a benefit/cost analysis, you may decide to retrieve such info or accounts from backup.
Any other suggestions?
Regards.
Andre Felipe

Marco via Info-cyrus <info-cyrus at lists.andrew.cmu.edu> wrote ..
> Hello,
> 
>   I run  Cyrus IMAP v2.4.17-Invoca-RPM-2.4.17-6.el6 wit about 2500 
> mailboxes (about 3 TB).
> 
> Days ago I had a disk problem (read only disk access) with some trouble 
> on server.
> 
> Now I see a ton of these messages:
> 
> 2016-10-07T02:38:16.596528+02:00 ucstore cyrus/imap[12693]: skiplist: 
> checkpointed /var/lib/imap/domain/Q/domain.it/user/A/<xxxx>^<xxxx.seen 
> (19 records, 1700 bytes) in 0 seconds
> 
> and access to mailboxes is slower than normal.
> 
> I though a sort of recovery started, but the problem on disk happens 
> three days ago.
> 
> Also incremental squatter takes about 15 hours in place of 2 hours.
> 
> Do you have any hint how to solve this problem?
> 
> 
> Thank you very much.
> Best Regards
> Marco
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