Not directly related to HWAC, but I found a bug in 4.1.1 that results in LROC NSDs not being properly formatted (they don’t work) - Reference APAR IV76242 .
Still waiting for a fix. Bob Oesterlin Sr Storage Engineer, Nuance Communications 507-269-0413 From: <[email protected]<mailto:[email protected]>> on behalf of "Simon Thompson (Research Computing - IT Services)" Reply-To: gpfsug main discussion list Date: Wednesday, August 26, 2015 at 6:26 AM To: gpfsug main discussion list Subject: [gpfsug-discuss] Using HAWC (write cache) 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.
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