----- Message from dwhite@xxxxxxx ---------
Date: Fri, 7 Dec 2012 09:48:10 -0600
From: Dan White <dwhite@xxxxxxx>
Subject: Re: Need your urgent advice
To: anant@xxxxxxxxxxx
Cc: info-cyrus@xxxxxxxxxxxxxxxxxxxx
> On 12/07/12 14:10 +0530, anant@xxxxxxxxxxx wrote:
>> I was earlier running cyrus-imap on a RHEL 5.3 system having
>> cyrus-imap version 2.3.7.
>>
>> I moved to a new system with RHEL 6.3 system having cyrus-imap
>> version 2.3.16.
>>
>> I just did rsync of mailboxes, quota, sieve scripts ie.
>> /var/spool/imap and /var/lib/imap from one system to other and started
>> the cyrus-imap.
>>
>> Everything was going smoothly. From today morning, I found some
>> segfaults for imap like
>>
>> Dec 7 10:20:42 isacmail kernel: imapd[12917]: segfault at 0 ip
>> 00007f99993dd994 sp 00007fffa7378be0 error 4 in
>> libc-2.12.so[7f9999378000+189000]
>
> Look at your auth facility syslog output to see if these can be tied to a
> particular user/mailbox.
>
> See this thread for a similar discussion recently:
>
> http://asg.andrew.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&msg=54287
>
>> plenty of them, but right now they are not coming. Before this,
>> cyrus-imapd was not stopping cleanly and based on some suggestions on
>> mailing list, I removed deliver.db and db/* and I restarted the
>> cyrus-imapd service. I did several times after that, stopping and
>> starting, and everytime was stopping and starting properly. So,
>> released it to the users.
>>
>> But, in between segfaults are worrying me.
>>
>> As there is a version difference, it looks like I need to rebuild the
>> databases/mailboxes once.
>
> --
> Dan White
>
Dear Dan White,
Thanks for your inputs. As per the thread link you mentioned, it
looks like corruption in mailboxes.db. I plan to start the process
given in next 4 hours time with a downtime
(README.HOWTO-recover-mailboxes.db). This is going to take a huge
amount of time. I have done it before some few years back, when I had
to move mailboxes to another storage. But, this time, I did not do,
since, I thought 2.3.7 and 2.3.16 are same level versions and hence
may not be required.
If I can get any other alternative option from you within next 4
hours, then I can think of that solution. Otherwise, I am going ahead
with downtime and run the procedure documented in
README.HOWTO-recover-mailboxes.db. Any other advise from experts is
welcome.
Thanks in advance.
Regards,
Anant.
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