Monday, December 3, 2007

EMC Powerpath SE 5.0.2 flakyness

During Yesterdays tests, we were able to reproduce the problem 3 times, and we proved the leadville driver was not in cause here. After having reproduced the problem 2 times, I deinstalled Leadville emulex hba driver from Solaris10 OS by removing SUNWemlx[s,u] and EMLXemlxu emulex pagkages. Then I installed lpfc 6.02f and HBAnyware like on old machines after a couple of SPB, then a SPA, then another SPB reboots, the problem happened again.

Next week we will reproduce the problem again, now that we have a good methodology to do it :
reboot:
SPB,SPB,SPB,SPA,SPB
if it the problem doesnot happen, continue :
SPB,SPB,SPA,SPB,SPA,SPB

After every reboot, we wait until all Luns come back to their owning SP
so each reboot takes about 10 minutes

When we successfully reproduce it, I will then downgrade powerpath from 5.0.2 to 4.5
and try again, after that ;
If the problem is
there : install 120011 kernel patch
not there : change lpfc to leadville and make sure the problem is not coming back

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