Any small updates to a file cause the file to be fragmented. The best Mail Box to use under Dovecot for ZFS is MailDir, each email is store as a individual file. Fair bit of statis info is kept in a index file, but also the filename it self is also used. The only problem with it is backups take longer as they are more smaller files (but this maybe better than what you are getting at the moment, if it is badly fragmented)
See http://wiki.dovecot.org/MailboxFormat/Maildir http://www.linuxmail.info/mbox-maildir-mail-storage-formats/ The MailDir format will also work better with snapshots. Cheers -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
