Hi, as pointed out before: why do you want to add the additional layer of replication if ZFS can handle this configuration by itself? Configure a zpool with 2 mirrored iscsi targets. That's it. Extremely simple, and works.
There is a paper written by Thorsten Frueauf about this exact setup and it describes in detail what you want to achieve. Regards Hartmut On 03/11/10 16:36, Ryan Holt wrote: > What about something similar to drbd where the actual data being written to > one disk node on server A is written to another on server B via TCP/IP as > well? Heartbeat in this case would depend on drbd writing the data to both > servers... Can this be accomplished with Solaris/AVS/ZFS? > > Thanks, > Ryan > > -----Original Message----- > From: storage-discuss-bounces at opensolaris.org > [mailto:storage-discuss-bounces at opensolaris.org] On Behalf Of Fredrich > Maney > Sent: Thursday, March 11, 2010 9:43 AM > To: Anton Altaparmakov > Cc: ha-clusters-discuss at opensolaris.org; Unix Support; > storage-discuss at opensolaris.org > Subject: Re: [storage-discuss] [ha-clusters-discuss] How to setup up highly > available zfs file system replicated synchronously across two sites? > > In order for a filesystem (any filesystem on any OS) to failover between > nodes, that filesystem needs to be on shared storage that is external to all > nodes. This is because if the node that hosts the storage fails, i.e. has a > system board failure, there is no way for the other node to see it. > > You are already doing this in your working example on Linux - the iSCSI LUNs > are presented to both nodes in the cluster from whatever device is hosting > the iSCSI LUNs. > > You just need to do the same thing thing on the Solaris side. However, > remember that ZFS is not multi-initiator aware, so you can not mount the > zpools on both nodes at once without disk corruption. You will probably want > to wrap the service, ip and storage in a zone and fail that over all > together instead of separately at the global zone level. > > Google is your friend. I'd suggest searching for "Solaris Cluster iSCSI > zone". > > fpsm > > On Thu, Mar 11, 2010 at 9:18 AM, Anton Altaparmakov <aia21 at cam.ac.uk> > wrote: > >> Hi, >> >> I have been trying to setup Solaris Storage AVS with Sun Cluster in the >> > hope of having a ZFS file system replicated synchronously (via TCP/IP only) > between two machines so that it is mounted on one machine read-write and if > that machine fails it is mounted read-write on the other machine. > >> I have been reading all sorts of documentation and man pages and >> > experimenting but everything I have tried immediately asks for configuration > of shared storage which we don't have as the two machines are only connected > by TCP/IP. > >> We have such a system running at the moment using Linux, iSCSI plus >> > software raid for the replication and XFS as the file system and heartbeat > v2 for the failover and that works well. We then have an NFS server which > exports the XFS file system and the NFS server is migrated together with the > service ip address and the XFS file system between the two nodes in the > heartbeat cluster but I have now spent ages trying to figure out what to do > with Sun Cluster and AVS to achieve the same and I am completely failing to > do it. )-: > >> Would someone, pretty please with sugar on top, point me at the >> > documentation I am failing to find or alternatively giving me some pointers > as to which commands it is I should be using? > >> Thank you very much in advance! >> >> Best regards, >> >> Anton >> -- >> Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @) Unix >> Support, Computing Service, University of Cambridge, CB2 3QH, UK Linux >> NTFS maintainer, http://www.linux-ntfs.org/ >> >> _______________________________________________ >> ha-clusters-discuss mailing list >> ha-clusters-discuss at opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/ha-clusters-discuss >> >> > _______________________________________________ > storage-discuss mailing list > storage-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/storage-discuss > > _______________________________________________ > ha-clusters-discuss mailing list > ha-clusters-discuss at opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/ha-clusters-discuss > -- Sun Microsystems GmbH Hartmut Streppel Sonnenallee 1 Systems Practice D-85551 Kirchheim-Heimstetten Phone: +49 (0)89 46008 2563 Germany Mobile: +49 (0)172 8919711 http://www.sun.de FAX: +49 (0)89 46008 2572 mailto: hartmut.streppel at sun.com My BLOG: http://blogs.sun.com/Hartmut SAP Infos: http://wikis.sun.com/display/SAPonSun/SAP+on+Sun Sitz der Gesellschaft Sun Microsystems GmbH, Sonnenallee 1, D-85551 Kirchheim-Heimstetten Amtsgericht M?nchen: HRB 161028 Gesch?ftsf?hrer: Thomas Schr?der, Wolfgang Engels Vorsitzender des Aufsichtsrates: Martin H?ring
