I had been trying to work out some kind of HA using iscsi LUNS + ZFS mirror on top of that; but I never got around to figuring out an automated failover process. You would want the master to not share out it's LUN; and the other node to check if there is a system at the 'master' address before trying to become the master. It probably wouldn't be very fast, but it might be sufficient if you can get the failover worked out.
> Date: Tue, 6 Dec 2011 10:01:34 +1100 > From: [email protected] > To: [email protected] > Subject: Re: [OpenIndiana-discuss] OpenIndiana/ZFS mail server HA config > > On 6 December 2011 09:05, Hans J. Albertsson > <[email protected]> wrote: > > I noticed AVS: This is too recent for me to have had any chance of learning > > about it while at Sun. > > Could this be used for remote mirroring between two standard Supermicro > > X8STi-LN4 based microserver > > using two ordinary SATA disks each? > > Just spitballing, but perhaps you could do something with ZFS > send/receive. You could take frequent incremental snapshots and send > them to the remote node. If you did this, say, every ~30-60 seconds > during periods of high churn then perhaps all of the requisite blocks > would still be in the ARC and you could send them without reading back > from disk. > > We used to do this every 15 minutes on a pair of thumpers at the Uni I > worked at. Has anybody done this with a shorter period? You may get > more traction with the question on a ZFS mailing list. > > -- > Joshua M. Clulow > UNIX Admin/Developer > http://blog.sysmgr.org > > _______________________________________________ > OpenIndiana-discuss mailing list > [email protected] > http://openindiana.org/mailman/listinfo/openindiana-discuss _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
