2014/01/31

Oracle Solaris 11: EMC PowerPath / powermt display dev ; Device(s) not found.

This is just a small post about Oracle Solaris 11 and EMC PowerPath Configuration. If you've been trying to get EMC PowerPath configured on Solaris 11 and facing error(s) similar to the one below, then follow steps described below (can also follow the same for initial PowerPath Configuration on Oracle Solaris 11)




1. Make sure that Zoning/Lun Mapping from SAN/Storage is well configured.
For the zoning , run fcinfo remote-port -p <pwwn_connected_hba> (must list the PWWN and others details of the storage, otherwise must check that the zoning is well complete);
For the Storage Configuration, you can use fcinfo lu -v (list all fibre channel  logical  units, must have one or more "OS Device Name" listed here, otherwise must check that mapping is well done at the SAN Level). 




2. Check that Oracle Solaris mpxio is disabled.
That can easilly be achieved by running stmsboot with -L option.  If Solaris  I/O  multipathing  is not enabled, then no mappings are displayed. If It's enabled, then disable it by running "stmsboot -d". For example, below we can see the output with Solaris mpxio enabled (and the output printed when disabling -and the reboot required-).




3. Check that your storage's type is managed by EMC PowerPath
For that , we're using powermt with options display options. If our storage's type is listed as unmanaged (like the clariion below), then simply mark it as managed (using powermt manage as seen below) and you're done!





We should also pay attention to /kernel/drv/iscsi.conf. In fact, though Solaris  can distinguish between FC and iSCSI devices, some PowerPath versions don't make this distinction for manage and unmanage. So the mpxio-disable value must be set to yes in both the fp.conf (for fp.conf, it's also done automatically with stmsboot -d) and iscsi.conf files for PowerPath to manage EMC Clariion and VNX Storage Arrays.

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