Hi, we're running dovecot 1.1.2 (centos5 32-bit rpm from atrpms) havn't had any real issues with it, but today it looks like an index has become badly corrupted. We're seeing this in the logs every time we log in to a particular account:

2008-09-10T11:56:07+01:00 mail8 dovecot: Panic: IMAP(xxx): Trying to allocate 2273345672 bytes 2008-09-10T11:56:07+01:00 mail8 dovecot: IMAP(xxx): Raw backtrace: /usr/libexec/dovecot/imap [0x80d0310] -> /usr/libexec/dovecot/imap [0x80d036a] -> /usr/libexec/dovecot/imap [0x80cfc2c] -> /usr/libexec/dovecot/imap [0x80d966c] -> /usr/libexec/dovecot/imap [0x80ce750] -> /usr/libexec/dovecot/imap(buffer_create_dynamic+0x30) [0x80ce800] -> /usr/libexec/dovecot/imap(mail_index_sync_ext_intro+0x4d5) [0x80c0145] -> /usr/libexec/dovecot/imap(mail_index_sync_record+0x135) [0x80b11b5] -> /usr/libexec/dovecot/imap(mail_index_sync_map+0x269) [0x80b1d79] -> /usr/libexec/dovecot/imap(mail_index_map+0x38e) [0x80ab17e] -> /usr/libexec/dovecot/imap [0x80a825c] -> /usr/libexec/dovecot/imap(mail_index_open+0x1f4) [0x80a8554] -> /usr/libexec/dovecot/imap(index_storage_mailbox_open+0x79) [0x809ca39] -> /usr/libexec/dovecot/imap [0x806d339] -> /usr/libexec/dovecot/imap [0x806e1fa] -> /usr/libexec/dovecot/imap(mailbox_open+0x49) [0x80a09e9] -> /usr/libexec/dovecot/imap(cmd_select_full+0xa9) [0x805e459] -> /usr/libexec/dovecot/imap(cmd_select+0x19) [0x805e629] -> /usr/libexec/dovecot/imap [0x805fdec] -> /usr/libexec/dovecot/imap [0x805fe95] -> /usr/libexec/dovecot/imap [0x8060655] -> /usr/libexec/dovecot/imap(client_input+0x5e) [0x806086e] -> /usr/libexec/dovecot/imap(io_loop_handler_run+0x100) [0x80d7c80] -> /usr/libexec/dovecot/imap(io_loop_run+0x28) [0x80d6df8] -> /usr/libexec/dovecot/imap(main+0x4ac) [0x80683ec] -> /lib/libc.so.6(__libc_start_main+0xdc) [0x8c8dec] -> /usr/libexec/dovecot/imap [0x805a171]

This account has about 12 mails in cur, nothing in new. Shortly before this corruption started, I saw entries like:

2008-09-10T10:20:15+01:00 mail9 dovecot: IMAP(xxx): /var/spool/mail/supplier_2/xxx/Maildir/dovecot-uidlist: Duplicate file entry at line 2: 1217249435.M999046P25889.mail7.atlas.pipex.net,W=2673:2,S (uid 1 -> 14) ...

For all the mails in the cur directory.

About our setup: These are on an nfs-mounted file system. It's shared between two computers and connections are randomly redirected to either box; so potentially it could be an nfs type corruption issue. Timo, I'll send you a tarball of the dovecot* files off-list

Thanks,

Mark

-- Mark Zealey -- Shared Hosting Team Leader Product Development * Webfusion 123-reg.co.uk, webfusion.co.uk, donhost.co.uk, supanames.co.uk

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