I recently ran into a problem for the second time with ZFS mirrors. I mirror between two different physical arrays for some of my data. One array (SE3511) had a catastrophic failure and was unresponsive. Thus, according to the ZFS in s10u3 it just basically waits for the array to come back and hangs pretty much all IO to the zpool. I was told by Sun service that there were enhancements in the upcoming S10 10/08 release that will help.
My understanding of the code being delivered with S10 10/08 is that on 2-way mirrors (which is what I use) that if this same situation occurs again, ZFS will allow reads to happen but writes are still going to be queued until the other half of the mirror comes back. Is it just me or have we gone backwards? The whole point of mirroring is so that if half the mirror goes we survive and can fix the problem with little to NO impact to the running system. Is this really true? With ZFS root also being available in S10 10/08 I would not want it anywhere near my root filesystem if this is really the behavior. Any information would be GREATLY appreciated! BlueUmp -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
