powermt check to clean up dead powerpath paths

server005:root / > ./sbin/powermt display dev=all
Symmetrix ID=000287751748
Logical device ID=03E7
state=alive; policy=SymmOpt; priority=0; queued-IOs=0

Symmetrix ID=000290103418
Logical device ID=03BB
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
18 6/0/2/1/0.97.5.19.0.13.1 c18t13d1 FA 9aA active alive 0 1
21 6/0/13/1/0.97.5.19.0.13.1 c21t13d1 FA 8aA active alive 0 1

Symmetrix ID=000290103418
Logical device ID=03CF
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
18 6/0/2/1/0.97.5.19.0.13.6 c18t13d6 FA 9aA active dead 0 1
21 6/0/13/1/0.97.5.19.0.13.6 c21t13d6 FA 8aA active dead 0 1



server005:root / > ./sbin/powermt check
Warning: Symmetrix device path c18t13d6 is currently dead.
Do you want to remove it (y/n/a/q)? y
Warning: Symmetrix device path c21t13d6 is currently dead.
Do you want to remove it (y/n/a/q)? y


server005:root/ > ./sbin/powermt display dev=all

Symmetrix ID=000290103418
Logical device ID=03BB
state=alive; policy=SymmOpt; priority=0; queued-IOs=0
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
18 6/0/2/1/0.97.5.19.0.13.1 c18t13d1 FA 9aA active alive 0 1
21 6/0/13/1/0.97.5.19.0.13.1 c21t13d1 FA 8aA active alive 0 1

Basic power path commands

With EMC's PowerPath product it may be useful to check the status of what is available as far as PowerPath is concerned.

Use the "powermt display" command for this.

EXAMPLE:

# powermt display
total emcpower devices: 94, highest device number: 93
==============================================================================
------------ Adapters ------------ ----- Device Paths ------ --- Queued ---
## Switch Name Summary Total Closed IOs Blocks
==============================================================================
0 Enabled sbus@1f/fcaw@0 Optimal 94 0 0 0
1 Enabled sbus@1f/fcaw@2 Optimal 94 0 0 0

This shows us that there are 2 paths that PowerPath is using and both of them are online and functioning at optimal performance.



It is possible to search further by using the "powermt display dev=" command.

EXAMPLE:

# powermt display dev=c1t0d93
emcpower91: state=operational, policy=symm_opt, priority=0, IOs in progress=0
Symmetrix ID=0184502576
==============================================================================
------ Adapter ------ --------- Device Path ---------- Serial Queued Errs
## Name Mode Link ID State Number IOs
==============================================================================
0 sbus@1f/fcaw@0 Active c1t0d93 sd2681 Open 7611D000 0 0
1 sbus@1f/fcaw@2 Active c2t1d93 sd2572 Open 7611D000 0 0



To see all devices use the following command :"powermt display dev=all"