LARGE single-system Cyrus installs?
wes at umich.edu
Thu Nov 15 13:29:54 EST 2007
On 14 Nov 2007, at 23:15, Vincent Fox wrote:
> We have all Cyrus lumped in one ZFS pool, with separate filesystems
> imap, mail, sieve, etc. However, I do have an unused disk in each
> such that I could setup a simple ZFS mirror pair for /var/cyrus/
> imap so
> that the databases are in their own pools. Or even I suppose a UFS
> filesystem with directio and all that jazz set.
About 30% of all I/O is to mailboxes.db, most of which is read. I
haven't personally deployed a split-meta configuration, but I
understand the meta files are similarly heavy I/O concentrators.
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