-- Matt Walburn http://mattwalburn.com
On Tue, Dec 9, 2008 at 8:40 AM, Matt Walburn <matt at railwave.com> wrote: > Basically, what we want to be able to do is: > > 1. Create a multi-node campus cluster (at least 8 sun4v nodes) where half > of the nodes are in one site, with the other half in the second site. Assume > that both sites are active at all times. > 2. Within this cluster I would have Logical Domains that have their root > filesystems provisioned onto replicated LUNs (EMC or HDS via SRDF or TC). > 3. Additionally, realizing that this functionalty won't be there until > LDOMs 1.1, I would want those replicated LUNs to have multiple SAN paths, > with primary and secondary I/O domains each serving up at least one path to > the LDOM, with the LDOMs' MPxIO aggregating those paths into one device. > > My assumption is, that Sun Cluster would be running in the primary > I/O-Control domain in order to facilitate the failover of the entire LDOM, > managing the storage replication commands in the process. This would give us > the ability to failover LDOMs between sites. > > We may or may not then want to run SC _inside_ the LDOMs for failing over > services between running LDOMs. > > Hopefully this makes sense! > > Thanks again, > Matthew > -- > Matt Walburn > http://mattwalburn.com > > > > On Mon, Dec 8, 2008 at 3:49 AM, Hartmut Streppel <Hartmut.Streppel at sun.com > > wrote: > >> Hi Matt, >> >> On 12/05/08 13:50, Matt Walburn wrote: >> >>> This is excellent news! Since this would leverage the existing agent, >>> does that imply that one will be to leverage SRDF or TrueCopy for >>> campus/geo type failovers of LDOMs? >>> >>> >> I am not sure whether you want to use SRDF/TC within a cluster or between >> clusters. With SC Geo this should be straight forward also not tested yet. >> With campus cluster, once this agent is available it should be a matter of >> testing. >> >>> Do you plan to support secondary I/O domains? >>> >>> >> It is my understanding that a secondary I/O domain is already supported. >> At least one of the configuration diagrams in the suncluster wiki shows a >> config with 2 I/O domains and volume mirroring and IPMP setup between these >> IO domains. >> >> Regards >> Hartmut >> >> Thanks for starting this, let me know if I can help in testing. >>> >>> -M >>> >>> -- >>> matt walburn >>> http://mattwalburn.com >>> >>> On Dec 5, 2008, at 4:44 AM, Hemachandran Namachivayam >>> <Hemachandran.Namachivayam at Sun.COM > wrote: >>> >>> >>> >>>> Hi OHAC members, >>>> >>>> I would like to introduce the "Failover LDoms agent for Guest domain" >>>> and as an addendum for the HA-xVM agent developed in OHAC release. So >>>> we >>>> are not talking about developing a new agent, rather focus on extending >>>> the existing HA-xVM Agent. >>>> >>>> Refer to HA-xVM agent at http://opensolaris.org/os/project/ha-xvm/ >>>> >>>> Please find the information below describing the project >>>> >>>> 1) Purpose >>>> >>>> The purpose of this project is to enhance the (HA-xVM) to support >>>> failover of LDom Guest domains between two or more OHAC nodes. >>>> >>>> 2) Project Team >>>> >>>> - HA-xVM team >>>> >>>> 3) Project Description >>>> >>>> Enhancing the HA-xVM agent would require to support the below >>>> mentioned bullets for a LDom Guest domain on SPARC machine. >>>> >>>> * Manage the start/stop and restart of LDoms Guest domains. >>>> * Failover a Ldoms Guest domain between cluster nodes. >>>> * Allow for ++ve and --ve affinities between LDoms Guest domains >>>> across cluster. >>>> * Allow for different failover techniques, i.e. Stop/Failover/ Start >>>> or Live Migration. >>>> >>>> -Thanks and Regards >>>> Hemachandran >>>> _______________________________________________ >>>> ha-clusters-discuss mailing list >>>> ha-clusters-discuss at opensolaris.org >>>> http://mail.opensolaris.org/mailman/listinfo/ha-clusters-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 >> Sun Microsystems GmbH, Sonnenallee 1, D-85551 Kirchheim-Heimstetten >> Amtsgericht M?nchen: HRB 161028 >> Gesch?ftsf?hrer: Thomas Schr?der, Wolfgang Engels, Dr. Roland B?mer >> Vorsitzender des Aufsichtsrates: Martin H?ring >> >> >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/ha-clusters-discuss/attachments/20081209/8dbf8a8e/attachment.html>
