[Dovecot] Question about "Storage keeps breaking" in logs

[Maria Arrea]

This dovecot box (RHEL 5.6 x64, dovecot 2.0.13, ext4) is a VM over vmware vsphere. The remote SAN disks are presented via iSCSI to the ESX hosts, and the ESX host show them as "local storage" /dev/sdX

 We have several VM sharing that datastore, no I/O contention detected. I will try with imaptest but this a production enviroment, I will take a couple of weeks to get a "mainteneance window" for this.

 Any other idea about this? Maybe this problem is load-related?

 Regards

 Maria

----- Original Message -----
From: Timo Sirainen
Sent: 06/28/11 01:33 AM
To: Maria Arrea
Subject: Re: [Dovecot] Question about "Storage keeps breaking" in logs

 On Wed, 2011-06-22 at 19:32 +0000, Maria Arrea wrote: > Jun 6 17:03:23 buzon dovecot: imap(juanan): Warning: mdbox /buzones/18/66/juanan/storage: rebuilding indexes Problem 1: It doesn't log the reason for this rebuild. I can find only one place in code why that could happen, fixed: http://hg.dovecot.org/dovecot-2.0/rev/028b953e7040 > Jun 6 17:03:26 buzon dovecot: imap(juanan): Error: mdbox /buzones/18/66/juanan/mailboxes/P7.Bielorrusia/cd-eslpod-enviado/dbox-Mails: Storage keeps breaking Problem 2: It apparently can't fix that error. But in my tests it gets fixed fine.. > Jun 6 17:03:27 buzon dovecot: imap(juanan): Error: Recent flags state corrupted for mailbox Deleted Messages Probably related to the index rebuild. So this is a local disk with ext4 filesystem, nothing special? It shouldn't be breaking.. How often do these happen? Can you reproduce these by running imaptest against a test account? http://imapwiki.org/ImapTest