I have a similar situation. I have a system that is used for backup copies of logs and other non-critical things, where the primary copy is on a Netapp. Data gets written in batches a few times a day. We use this system because storage on it is a lot less expensive than on the Netapp. It's only non-critical data that is sent via NFS. Critical data is sent to this server either by zfs send | receive, or by an rsync running on the server that reads from the Netapp over NFS. Thus the important data shouldn't go through the ZIL.
I am seriously considering turning off the ZIL, because NFS write performance is so lousy. I'd use SSD, except that I can't find a reasonable way of doing so. I have a pair of servers with Sun Cluster, sharing a J4200 JBOD. If there's a failure, operations move to the other server. Thus a local SSD is no better than ZIL disabled. I'd love to put an SSD in the J4200, but the claim that this was going to be supported seems to have vanished. Someone once asked why I both with redundant systems if I don't care about the data. The answer is that if the NFS mounts hang, my production service hang. Also, I do care about some of the data. It just happens not to go through the ZIL. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
