On 12/5/18 12:19 PM, Aki Tuomi wrote:
On 05 December 2018 at 20:54 Orion Poplawski orion@nwra.com wrote:
With dovecot-2.2.36-3.el7.x86_64 we had a couple hours where mail_plugins did not properly include zlib for all of the needed services. This seems to have led to some corruption in our mdbox mailboxes.
I've run doveadm force-resync on a number of users, but I'm still seeing messages like this:
dovecot[13563]: imap(USER): Error: Corrupted record in index cache file /var/spool/imap/USER/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: UID 67976: Broken physical size in mailbox INBOX: read(zlib(/var/spool/mail/USER/storage/m.1203)) failed: Cached message size smaller than expected (2978 < 8192, box=INBOX, UID=67976)
Is there anything that can be done about this? Can I safely delete the dovecot.index.cache file? I'm hesitant to do so since I understand that the mdbox format uses the index to store mailbox information and deleting at least some index files is a destructive operation.
Thanks!
Erasing the cache file causes dovecot to recache the mails on access. It can cause performance issues, but no data loss.
Aki
Thank you for the confirmation. Removing those cache files appears to have fixed the corruption users were seeing on their clients.
Resting much more easily now....
- Orion
-- Orion Poplawski Manager of NWRA Technical Systems 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion@nwra.com Boulder, CO 80301 https://www.nwra.com/