Solved: Re: Help please, cyrus imapd production system down

[Bron Gondwana]

On Thu, Mar 27, 2008 at 02:01:05PM -0500, Mike Eggleston wrote:
> On Thu, 27 Mar 2008, Andrew Morgan might have said:
> 
> > On Thu, 27 Mar 2008, Mike Eggleston wrote:
> > 
> > >Problem solution:
> > >remove the user's seen file at /var/lib/imap/user/?/$USER.seen
> > > no restarting of cyrus required after removing the broken file
> > >
> > >Environment:
> > >Fedora Core 5 (current patches)
> > ># rpm -qa | grep cyrus
> > >cyrus-imapd-devel-2.3.1-2.8.fc5
> > >cyrus-sasl-lib-2.1.21-10
> > >cyrus-sasl-2.1.21-10
> > >cyrus-imapd-utils-2.3.1-2.8.fc5
> > >cyrus-sasl-ldap-2.1.21-10
> > >cyrus-imapd-2.3.1-2.8.fc5
> > >cyrus-sasl-devel-2.1.21-10
> > 
> > There have been quite a few reliability fixes in skiplist handling added 
> > over the 2.3 lifecycle.  Upgrading to a current version of Cyrus should 
> > help.
> > 
> > We haven't had corrupted skiplist seen files in quite a while.  I have 
> > only recently upgraded from 2.2.13 to 2.3.11, so I can't really say which 
> > version of Cyrus fixed the problem for us.
> > 
> > 	Andy
> 
> Are there any problems, compatibility or conversion issues, when upgrading?

Mike - if you don't want to upgrade, but are willing to rebuild your
Cyrus package from source, you could just copy the attached
cyrusdb_skiplist.c file over the one in $BASEDIR/lib/ instead.  I'm
pretty sure there are no cross dependencies.

This is taken from my 2.3.11 tree with extra patches (I seem to be 
posting those patches a lot!) for sanity checking and integrity 
assertions.  With these patches applied I have been unable to cause 
any damage to the underlying skiplist files no matter how hard I 
abuse the API with my testing programs!

Regards,

Bron.
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