On Wed, 2009-03-11 at 19:15 -0400, Patrick A. Treptau wrote: > Hello, > > we're experiencing an odd issue after combining two vDisks used for mail > storage into one big new LVM. We've done this in the past successfully and > didn't experience a lot of problems. We > stopped all services (dovecot/postfix) to ensure that mailbox contents > (Maildir) > will not be changed, rsynch'ed the mail to the new disks and restarted > everything. > > When we restarted dovecot, we noticed a huge spike in load (average load > in top and > high cpu iowait) and isolated dovecot as the issue. At some point, the > average load > crept up to over 100 and crashed the server twice. However, over time the > average > load and cpu wait times went down slightly. I have noticed a spike in load > after moving > user's mail storage, but not like this. It almost looks like everyone is > either > re-indexing or re-caching their mail? > > Any help would be appreciated. We're on dovecot 0.99.
I don't say this lightly - upgrade. Personally I HATE that answer, I'm a "If it ain't broke don't fix it" person, but I've seen so many improvements to the backend and indexing systems this looks like it's an appropriate answer for you. Rick
