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)

root@stiv-sol11:~# powermt display Device(s) not found. root@stiv-sol11:~# powermt display dev=all Device(s) not found.


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). 

root@stiv-sol11:~# fcinfo remote-port -p <local_pwwn_port01> Remote Port WWN: <san_pwwn_spa_p1> Active FC4 Types: SCSI SCSI Target: yes Port Symbolic Name: DGC LUNZ 0430 Node WWN: <san_wwn_spa_p1> Remote Port WWN: <san_pwwn_spb_p1> Active FC4 Types: SCSI SCSI Target: yes Port Symbolic Name: DGC LUNZ 0430 Node WWN: <san_wwn_spb_p1> root@stiv-sol11:~# fcinfo remote-port -p <local_pwwn_port02> Remote Port WWN: <san_pwwn_spa_p2> Active FC4 Types: SCSI SCSI Target: yes Port Symbolic Name: DGC LUNZ 0430 Node WWN: <san_wwn_spa_p2> Remote Port WWN: <san_pwwn_spb_p2> Active FC4 Types: SCSI SCSI Target: yes Port Symbolic Name: DGC LUNZ 0430 Node WWN: <san_pwwn_spb_p2> root@stiv-sol11:~# fcinfo lu -v OS Device Name: /dev/rdsk/c0t60060160CD0E260000A8B1D4B789E311d0s2 HBA Port WWN: <local_pwwn_port02> Remote Port WWN: <san_pwwn_spa_p1> LUN: 0 Remote Port WWN: <san_pwwn_spb_p1> LUN: 0 HBA Port WWN: <local_pwwn_port01> Remote Port WWN: <san_pwwn_spa_p2> LUN: 0 Remote Port WWN: <san_pwwn_spb_p2> LUN: 0 Vendor: DGC Product: RAID 5 Device Type: Disk Device


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-).

root@stiv-sol11:~# stmsboot -L non-STMS device name STMS device name ------------------------------------------------------------------ /dev/rdsk/c6t<san_pwwn_spa_p1>d0 /dev/rdsk/c0t60060160CD0E260000A8B1D4B789E311d0 /dev/rdsk/c6t<san_pwwn_spa_p2>d0 /dev/rdsk/c0t60060160CD0E260000A8B1D4B789E311d0 /dev/rdsk/c14t<san_pwwn_spb_p1>d0 /dev/rdsk/c0t60060160CD0E260000A8B1D4B789E311d0 /dev/rdsk/c14t<san_pwwn_spb_p2>d0 /dev/rdsk/c0t60060160CD0E260000A8B1D4B789E311d0 ........................................... root@stiv-sol11:~# stmsboot -d WARNING: stmsboot operates on each supported multipath-capable controller detected in a host. In your system, these controllers are /pci@400/pci@2/pci@0/pci@8/SUNW,qlc@0/fp@0,0 /pci@400/pci@2/pci@0/pci@8/SUNW,qlc@0,1/fp@0,0 /pci@500/pci@2/pci@0/pci@a/SUNW,qlc@0/fp@0,0 /pci@500/pci@2/pci@0/pci@a/SUNW,qlc@0,1/fp@0,0 /pci@400/pci@2/pci@0/pci@e/scsi@0/iport@1 ...... If you do NOT wish to operate on these controllers, please quit stmsboot and re-invoke with -D { fp | mpt | mpt_sas | pmcs} to specify which controllers you wish to modify your multipathing configuration for. Do you wish to continue? [y/n] (default: y) WARNING: This operation will require a reboot. Do you want to continue ? [y/n] (default: y) The changes will come into effect after rebooting the system. Reboot the system now ? [y/n] (default: y)

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!

root@stiv-sol11:~# powermt display options Default storage system class: all Show CLARiiON LUN names: true Path Latency Monitor: Off Path Latency Threshold: 0 milliseconds Performance Monitor: disabled Autostandby: Proximity (prox): enabled IOs per Failure (iopf): enabled iopf aging period : 7 d iopf limit : 6000 Storage System Class Attributes ------------ ---------- Symmetrix periodic autorestore = on reactive autorestore = on status = managed CLARiiON periodic autorestore = on reactive autorestore = on status = unmanaged Invista periodic autorestore = on reactive autorestore = on status = managed Hitachi periodic autorestore = on reactive autorestore = on status = managed HP xp periodic autorestore = on reactive autorestore = on status = managed Ess periodic autorestore = on reactive autorestore = on status = managed HP HSx periodic autorestore = on reactive autorestore = on status = unmanaged VPLEX periodic autorestore = on reactive autorestore = on status = managed VNX periodic autorestore = on reactive autorestore = on status = managed

root@stiv-sol11:~# powermt manage class=clariion root@stiv-sol11:~# powermt display CLARiiON logical device count=1 ============================================================================== ----- Host Bus Adapters --------- ------ I/O Paths ----- ------ Stats ------ ### HW Path Summary Total Dead IO/Sec Q-IOs Errors ============================================================================== 3077 pci@500/pci@2/pci@0/pci@a/SUNW,qlc@0,1/fp@0,0 optimal 2 0 - 0 0 3081 pci@400/pci@2/pci@0/pci@8/SUNW,qlc@0,1/fp@0,0 optimal 2 0 - 0 0

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.