Originally posted by: shalt

we had a couple of servers hang/crash during LPMs recently and IBM & EMC support suggested we change all of our LPAR hdisks & hdiskpowers reserve_policys to no_reserve.  Which we did.  Now when we LPM a test LPAR sometimes we see all hdisks for a hdiskpower with a CONNECTION FAILURE errpt message & a FUNCTION DEGRADED errpt message for the hdiskpower (see below).  EMC says not to be concerned -> just informational messages.  My boss says losing all paths to a hdiskpower device can't be good.  What messages are 'normal' in errpt running LPM w/PowerPath?  

A5E6DB96   0414083416 I S pmig           Client Partition Migration Completed
1BBD20F4   0414083416 I H hdiskpower3    FUNCTION DEGRADED
C6E26F3B   0414083416 I H hdisk19        BACK-UP PATH STATUS CHANGE
1E67811B   0414083316 P H hdisk19        UNABLE TO COMMUNICATE WITH DEVICE
516A2BC4   0414083316 P H hdisk9         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk1         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk14        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk19        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk17        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk6         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk2         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk12        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk13        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk5         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk16        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk18        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk11        CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk0         CONNECTION FAILURE
516A2BC4   0414083316 P H hdisk8         CONNECTION FAILURE
08917DC6   0414083316 I S pmig           Client Partition Migration Started

Thanks-

Originally posted by: MattDulson

Are both WWPNs per vFC adapter setup in the storage group/initiator group (depending on EMC storage type).?

Pre VIOS 2.2.4, LPM verify didn't check that both WWPNs are zoned properly on the array, only on the SAN.

See: http://www.ibm.com/support/knowledgecenter/POWER8/p8hc3/p8hc3_npivorlunval.htm?cp=POWER8%2F1-6-1-3-7-1-0-5-3-3 for more info

If you are at VIOS 2.2.4 then it might be worth using this feature to see what it says.

Matt

Originally posted by: shalt

Thanks Matt -> we have verified the zoning (both wwn's zoned) & I'm guessing if the zoning or masking were off -> the LPM verification would fail.  I guess our concern is w/the errpt messges.  IBM says all we should see if migration started/migration completed...  What do other people see in errpt when doing a LPM w/Powerpath?