GPFS : all my NSDs appear as « none None » in lspv output!

If by a wrong manipulation of your disks by the SAN team (which we just had), and on one your cluster’s node , when you type lspv, you’ve got no more labels on your NSD hdisks: Though NSDs are there,

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GPFS : delete a configured cluster you just created (Testing only)

Easiest , dirtiest and quickest way I found to delete a freshly configured GPFS cluster (DON’T DO THIS ON A PRODUCTION SERVER !!! IT IS FOR TESTING/DEV PURPOSES ONLY !!! ) : GPFS V4 : change to CCR mode I

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GPFS : mmchnode to change a GPFS node’s IP breaks the cluster ?

I had to change IPs of my 2-nodes GPFS cluster, in order to move them from a LAN network to a DMZ. So what I did, is : I changed the system’s IP address without stopping the cluster (yeah, I

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GPFS : mmfsd64 high CPU usage

I’m discovering GPFS and I certainly will continue to post some tips about it here, so don’t be harsh with me, these will be some n00b posts, but it will help me and maybe help some of you too !

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