Ross wrote: > To repeat what some others have said, yes, Solaris seems to handle an iSCSI > device going offline in that it doesn't panick and continues working once > everything has timed out. > > However that doesn't necessarily mean it's ready for production use. ZFS > will hang for 3 mins (180 seconds) waiting for the iSCSI client to timeout. > Now I don't know about you, but HA to me doesn't mean "Highly Available, but > with occasional 3 minute breaks". Most of the client applications we would > want to run on ZFS would be broken with a 3 minute delay returning data, and > this was enough for us to give up on ZFS over iSCSI for now. > >
By default, the sd driver has a 60 second timeout with either 3 or 5 retries before timing out the I/O request. In other words, for the same failure mode in a DAS or SAN you will get the same behaviour. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
