Need your urgent advice

[anant at isac.gov.in]

----- Message from dwhite at olp.net ---------
     Date: Fri, 7 Dec 2012 09:48:10 -0600
     From: Dan White <dwhite at olp.net>
  Subject: Re: Need your urgent advice
       To: anant at isac.gov.in
       Cc: info-cyrus at lists.andrew.cmu.edu


> On 12/07/12 14:10 +0530, anant at isac.gov.in 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.

----- End message from dwhite at olp.net -----



------------------------------------------------------------------------------
Confidentiality Notice: This e-mail message, including any attachments, is for
the sole use of the intended recipient(s) and may contain confidential and
privileged information. Any unauthorized review, use, disclosure or
distribution is prohibited. If you are not the intended recipient, please
contact the sender by reply e-mail and destroy all copies of the original
message.
------------------------------------------------------------------------------