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--- storage:emc_cmd [2021/03/16 21:05]
manu created
+++ storage:emc_cmd [2021/03/23 18:56] (current)
manu
@@ Line 46: / Line 46: @@
 </cli>
+Powermt
+Remove paths and dead disks
+<cli>
+powermt check [force]
+</cli>
+List all paths
+<cli>
+powermt display dev=all
+</cli>
+Check state of disk (error: unable to open device), check if disk in RW, else not accessible
+<cli>
+symcfg discover
+symcfg list
+sympd list | grep 011E
+</cli>
+===== EMC multipathing licensing =====
+List Powerpath license:
+  emcpreg -list
+  emcpreg -add xxx-yyy-vvvv-hhhh
+Showing mode as unlicensed
+<cli prompt='#'>
+[root@mynode1 ~]# powermt display dev=all
+Pseudo name=emcpowera
+CLARiiON ID=**************** [my_mynode1]
+Logical device ID=600601601C22280016002FBEE3C1E111 [LUN 207]
+state=alive; policy=BasicFailover; priority=0; queued-IOs=0;
+Owner: default=SP B, current=SP B Array failover mode: 4
+==============================================================================
+————— Host ————— – Stor – — I/O Path — — Stats —
+### HW Path I/O Paths Interf. Mode State Q-IOs Errors
+==============================================================================
+qla2xxx sdb SP A1 unlic alive 0 0
+qla2xxx sdc SP B0 unlic alive 0 0
+qla2xxx sdd SP A0 active alive 0 0
+qla2xxx sde SP B1 active alive 0 0
+</cli>
+Issued below command to check the registration status and found that it is in expired status. Before reboot it was working fine only after reboot we encounter the issue.
+<cli prompt='#'>
+[root@mynode1 ~]# powermt check_registration
+Key ****-****-****-****-****-****
+Product: PowerPath
+Capabilities: All
+Expired: Oct, 2012
+</cli>
+We registered the new key to get rid of the error.
+<cli prompt='#'>
+[root@mynode1 ~]# emcpreg -install
+=========== EMC PowerPath Registration ===========
+Do you have a new registration key or keys to enter?[n] y
+Enter the registration keys(s) for your product(s),
+one per line, pressing Enter after each key.
+After typing all keys, press Enter again.
+Key (Enter if done): ****-****-****-****-****-****
+key(s) successfully added.
+Key successfully installed.
+Key (Enter if done):
+key(s) successfully registered.
+</cli>
+After the successful registration we were able to see the new key along with old one in below command output.
+<cli prompt='#'>
+[root@mynode1 ~]# powermt check_registration
+Key ****-****-****-****-****-****
+Product: PowerPath
+Capabilities: All
+Expired: Oct, 2012
+Key ****-****-****-****-****-****
+Product: PowerPath
+Capabilities: All
+</cli>
+We removed the old key from the previous output.
+<cli prompt='#'>
+[root@mynode1 ~]# emcpreg -remove ****-****-****-****-****-****
+After the above operation only one key was showing in output which is the newly and desired one.
+<cli prompt='#'>
+[root@mynode1 ~]# powermt check_registration
+Key ****-****-****-****-****-****
+Product: PowerPath
+Capabilities: All
+</cli>
+All the paths are showing in active status after that 🙂
+<cli prompt='#'>
+[root@mynode1 ~]# powermt display dev=all
+Pseudo name=emcpowera
+CLARiiON ID=**************** [my_mynode1]
+Logical device ID=600601601C22280016002FBEE3C1E111 [LUN 207]
+state=alive; policy=CLAROpt; priority=0; queued-IOs=0;
+Owner: default=SP B, current=SP B Array failover mode: 4
+==============================================================================
+————— Host ————— – Stor – — I/O Path — — Stats —
+### HW Path I/O Paths Interf. Mode State Q-IOs Errors
+==============================================================================
+qla2xxx sdb SP A1 active alive 0 0
+qla2xxx sdc SP B0 active alive 0 0
+qla2xxx sdd SP A0 active alive 0 0
+qla2xxx sde SP B1 active alive 0 0
+</cli>

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