Hi, I was wondering if anyone knows how to configure HAWC which was added in the 4.1.1 release (this is the hardened write cache) (http://www-01.ibm.com/support/knowledgecenter/#!/STXKQY/411/com.ibm.spectr um.scale.v4r11.adv.doc/bl1adv_hawc_using.htm)
In particular I'm interested in running it on my client systems which have SSDs fitted for LROC, I was planning to use a small amount of the LROC SSD for HAWC on our hypervisors as it buffers small IO writes, which sounds like what we want for running VMs which are doing small IO updates to the VM disk images stored on GPFS. The docs are a little lacking in detail of how you create NSD disks on clients, I've tried using: %nsd: device=sdb2 nsd=cl0901u17_hawc_sdb2 servers=cl0901u17 pool=system.log failureGroup=90117 (and also with usage=metadataOnly as well), however mmcrsnd -F tells me "mmcrnsd: Node cl0903u29.climb.cluster does not have a GPFS server license designation" Which is correct as its a client system, though HAWC is supposed to be able to run on client systems. I know for LROC you have to set usage=localCache, is there a new value for using HAWC? I'm also a little unclear about failureGroups for this. The docs suggest setting the HAWC to be replicated for client systems, so I guess that means putting each client node into its own failure group? Thanks Simon _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at gpfsug.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
