On 16 Mar 2016, at 20:09, Anton Chevychalov <a...@stacksoft.ru> wrote: > > We are using dbox with lz4 compression and dovecot-lda + sieve for delivery. > > Mail recieved: > Mar 16 06:27:55 mail2 dovecot: lda(s...@example.com): sieve: > msgid=<20160316032754.4c89d...@rdbms.oldstable.office.example.com>: stored > mail into mailbox 'INBOX' > > Around 08:14:00 user start his thunderbird with local filters. He found one > mail without headers. > > Around that time user do repair folder in thunderbird: > Mar 16 10:14:44 mail2 dovecot: imap(s...@example.com): Error: > read(/mail/boxes/example.com/svs/storage/m.139) failed: Cached message size > larger than expected (1572 > 980, box=Logs/Backup, UID=9763, cached > Message-Id=<20160316032754.4c89d...@rdbms.oldstable.office.example.com>) > Mar 16 10:14:44 mail2 dovecot: imap(s...@example.com): Error: Corrupted index > cache file > /mail/boxes/example.com/svs/mailboxes/Logs/Backup/dbox-Mails/dovecot.index.cache: > Broken physical size for mail UID 9763 > Mar 16 10:14:44 mail2 dovecot: imap(s...@example.com): Error: > read(/mail/boxes/example.com/svs/storage/m.139) failed: Cached message size > larger than expected (1572 > 980, box=Logs/Backup, UID=9763, cached > Message-Id=<20160316032754.4c89d...@rdbms.oldstable.office.example.com>) > (FETCH BODY[] for mailbox Logs/Backup UID 9763) > Mar 16 10:14:44 mail2 dovecot: imap(s...@example.com): Disconnected: FETCH > read() failed in=14812 out=1077049 > Mar 16 10:14:45 mail2 dovecot: imap(s...@example.com): Error: > read(/mail/boxes/example.com/svs/storage/m.139): FETCH BODY[] for mailbox > Logs/Backup UID 9763 got too little data: 1008 vs 1613 > Mar 16 10:14:45 mail2 dovecot: imap(s...@example.com): Error: Corrupted index > cache file > /mail/boxes/example.com/svs/mailboxes/Logs/Backup/dbox-Mails/dovecot.index.cache: > Broken virtual size for mail UID 9763 > Mar 16 10:14:45 mail2 dovecot: imap(s...@example.com): Disconnected: > FETCH failed in=837 out=641651 > > And still in a same state: > Mar 16 11:42:51 mail2 dovecot: imap(s...@example.com): Error: > read(/mail/boxes/example.com/svs/storage/m.139): FETCH BODY[] for mailbox > Logs/Backup UID 9763 got too little data: 1008 vs 1613 > Mar 16 11:42:51 mail2 dovecot: imap(s...@example.com): Error: Corrupted index > cache file > /mail/boxes/example.com/svs/mailboxes/Logs/Backup/dbox-Mails/dovecot.index.cache: > Broken virtual size for mail UID 9763 > Mar 16 11:42:51 mail2 dovecot: imap(s...@example.com): Disconnected: FETCH > failed in=12462 out=984043 > > In thunderbird we see raw lz4 data. > > I have today backup (duplicate mail on exim to per day mbox). So I can > restore that message, but I found older problems in other mailboxes and I > can't restore it due to tapes rotation > > I see a lot of fixes in 2.2.19? Was it fixed after 2.2.18?
Probably this: https://github.com/dovecot/core/commit/879dfd4da1a9a379936b8d51c1e00c3bd77873b4 The mails aren't actually corrupted. Dovecot just didn't detect LZ4 compressed mails correctly always. v2.2.22 should help.
