Qlogic OFED+ Host, Software User'S Manual

Page: 234 / 284

E – ULP Troubleshooting
Troubleshooting SRP Issues
E-16 IB0054606-02 A
Solution 2:
Make certain that all sessions have a map to the same disk defined. The fact that
the session is active means that the session can see a disk. However, if one of the
sessions is using a map with the 'wrong' disk, then the round-robin method could
lead to a disk or disks not being seen.
Which port does a port GUID refer to?
Solution:
A QLogic HCA Port GUID is of the form
00066appa0iiiiii
where
pp
gives the port number (0 relative)
and
iiiiiii
gives the individual id number of the adapter
so
00066a 00 a0iiiiiii
is the port guid of the 1st port of the adapter
and
00066a 01 a0iiiiiii
is the port guid of the 2nd port of the adapter.
Similarly, a VFx Port GUID is of the form
00066app38iiiiii
where
pp
gives the IOC number (1 or 2)
and
iiiiiii
gives the individual ID number of the VIO hardware
so
00066a 01 38iiiiiii
is the port guid of IOC 1 of VIO hardware iiiiiii
and
00066a 02 38iiiiiii
is the port guid of IOC 2 of VIO hardware iiiiiii
If no sessions were successfully brought to the Active state, then the
roundrobin_X
or
failover_X
file will not be created.
In a round robin configuration, if everything is configured correctly, all sessions will
be Active.
NOTE
After a virtual adapter has been successfully added (meaning at least 1
session where part of the adapter has gone to the Active state) the SRP
module will indicates what type of session was created in the mode variable
(
ib_qlgc_srp_stats
) file, depending on whether “
roundrobinmode:
1
" is set in the
qlgc_srp.cfg
file. In this case “X” is the virtual adapter
number, with number
0
being the first one created.