locking bayes?

[Julian Field]

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As opposed to actually stopping (ie shutting down) MailScanner, why not 
just suspend the processes?

PID=`cat /var/run/MailScanner.pid`
kill -STOP -$PID
# Do your snapshot here
kill -CONT -$PID

Will Bayes survive that?

Randal, Phil wrote:
> Why not go for the simple and obvious solution:
>
> stop MailScanner
> snapshot
> restart MailScanner
>
> Cheers,
>
> Phil
> --
> Phil Randal
> Network Engineer
> Herefordshire Council
> Hereford, UK  
>
>   
>> -----Original Message-----
>> From: mailscanner-bounces at lists.mailscanner.info 
>> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
>> Of Greg Matthews
>> Sent: 21 May 2007 10:56
>> To: MailScanner discussion
>> Subject: locking bayes?
>>
>> I have developed a shell script that takes uses LVM snapshots 
>> to backup 
>> volumes on a mail server. I am able to get a read-lock on the MySQL 
>> MailWatch table and was wondering if I could do the same with 
>> the bayes 
>> database to ensure it is consistent.
>>
>> At the moment, I am relying on the robustness of BerkeleyDB 
>> to be able 
>> to recover from a possibly inconsistent state. This is not ideal.
>>
>> The snapshot process is very quick so the lock could be 
>> released almost 
>> immediately.
>>
>> GREG
>> -- 
>> Greg Matthews           01491 692445
>> Head of UNIX/Linux, iTSS Wallingford
>>
>> -- 
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>>
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>>
>> Support MailScanner development - buy the book off the website! 
>>
>>     

Jules

- -- 
Julian Field MEng CITP
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store

MailScanner customisation, or any advanced system administration help?
Contact me at Jules at Jules.FM

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