Thanks a lot. This clears many of the doubts I had. I was actually trying to improve the performance of our email storage. We are using dovecot as the LDA on a set of RHEL boxes and the email volume seems to be saturating the write throughput of our infortrend iSCSI SAN.
So it looks like a mail storage server type workload will not benifit with a ZIL as proven by zilstat and a postmark workload. Iam guessing Sun 7310/7410 will behave the same way with this type of workload. Do the logzillas/readzillas do anything special on these boxes ? TIA Dushyanth ------Original Message------ From: Richard Elling To: Dushyanth Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] ZFS ZIL/log on SSD weirdness Sent: Nov 18, 2009 21:55 On Nov 18, 2009, at 2:20 AM, Dushyanth wrote: > Just to clarify : Does iSCSI traffic from a Solaris iSCSI initiator > to a third party target go through ZIL ? ZFS doesn't know what a block device is. So if you configure your pool to use iSCSI devices, then it will use them. To measure ZIL activity, use zilstat. http://www.richardelling.com/Home/scripts-and-programs-1/zilstat -- richard Sent from BlackBerry _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
