How to refresh the Veritas Volume Manager disk details when using EMC PowerPath (Solaris)
Article ID: 100037732
Updated On:
Description
Description
The following EMC CLARiiON devices are presented to a Solaris server using EMC PowerPath as the multipathing solution.
Prior to the provisioning of new LUNs it is good practice to ensure the device naming is consistent for devices controlled by EMC PowerPath.
The following document explains how this consistency can be maintained.
In this instance "3" EMC CLARiiON devices are presented to a Solaris server; however the EMC pseudo device names do not match that of the Veritas disk access names.
EMC CLARiiON ALU (Array Logical Unit) References
EMC CLARiiON ALU reference "ALU 3" refers to emcpower3
EMC CLARiiON ALU reference "ALU 78" refers to emcpower4
EMC CLARiiON ALU reference "ALU 79" refers to emcpower2
The "ALU" values can be correlated to the "powermt display dev=all" or "powermt display class=clariion" specifically.
# powermt display class=clariion dev=all
Pseudo name=emcpower3a
CLARiiON ID=CK200053300424 [rdgv240sol13+14-bootdisks]
Logical device ID=60060160E83416001C81C15E575FDF11 [LUN 3] <<< ALU "3"
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
==============================================================================
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601603021C60Ed7s0 SP A0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601613021C60Ed7s0 SP A1 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601683021C60Ed7s0 SP B0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601693021C60Ed7s0 SP B1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601603021C60Ed7s0 SP A0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601613021C60Ed7s0 SP A1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601683021C60Ed7s0 SP B0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601693021C60Ed7s0 SP B1 active alive 0 0
Pseudo name=emcpower4a
CLARiiON ID=CK200053300424 [rdgv240sol13+14-bootdisks]
Logical device ID=60060160E83416004A3CB095BD3BDE11 [LUN 78] <<< ALU "78"
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
==============================================================================
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601603021C60Ed5s0 SP A0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601613021C60Ed5s0 SP A1 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601683021C60Ed5s0 SP B0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601693021C60Ed5s0 SP B1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601603021C60Ed5s0 SP A0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601613021C60Ed5s0 SP A1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601683021C60Ed5s0 SP B0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601693021C60Ed5s0 SP B1 active alive 0 0
Pseudo name=emcpower2a
CLARiiON ID=CK200053300424 [rdgv240sol13+14-bootdisks]
Logical device ID=60060160E8341600F2BC89206340DE11 [LUN 79] <<< ALU "79"
state=alive; policy=CLAROpt; priority=0; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 4
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601603021C60Ed6s0 SP A0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601613021C60Ed6s0 SP A1 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601683021C60Ed6s0 SP B0 active alive 0 0
3073 pci@1e,600000/SUNW,jfca@2/fp@0,0 c1t500601693021C60Ed6s0 SP B1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601603021C60Ed6s0 SP A0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601613021C60Ed6s0 SP A1 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601683021C60Ed6s0 SP B0 active alive 0 0
3074 pci@1e,600000/SUNW,qlc@3/fp@0,0 c5t500601693021C60Ed6s0 SP B1 active alive 0 0
Volume Manager disk details
Note: The following EMC pseudo device names shown in bold text do not correspond to the Veritas disk access name.
# vxdisk -e -o alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
disk_0 auto - (51dg) online c2t1d0s2 -
disk_1 auto - (50MP1RP5dg) online c2t2d0s2 -
disk_2 auto c2t0d0 rootdgrp4 online c2t0d0s2 -
emcpower0s2 auto - (datadg) online emcpower16c -
emcpower1s2 auto - (datadg) online emcpower0c -
emcpower2s2 auto - (datadg) online emcpower1c -
emcpower3s2 auto - - error emcpower9c -
emcpower4s2 auto - (datadg) online emcpower10c -
emcpower5 auto - - error emcpower3 - <<<< ALU "3"
emcpower6s2 auto - (rootdg) online emcpower2c - <<<< ALU "79"
emcpower7s2 auto - - online emcpower4c - <<<< ALU "78"
emcpower8s2 auto - - online emcpower15c -
emcpower9s2 auto - (testdg) online emcpower17c -
emcpower10s2 auto - - online emcpower18c -
emcpower11s2 auto - - error emcpower5 -
emcpower12s2 auto - (terrydg) online emcpower6c -
emcpower13s2 auto - - online emcpower7c -
emcpower14s2 auto - (newdg) online emcpower11c -
emcpower15s2 auto - (newdg) online emcpower8c -
emcpower16s2 auto - - online emcpower12c -
emcpower17s2 auto - - online emcpower13c -
emcpower18s2 auto - (testdg) online emcpower14c -
Note: The EMC PowerPath pseudo names should correspond to the Veritas Disk access name (DA) when the tpdmode is set to pseudo naming.
EMC CLARiiON ALU references to Veritas Disk Access Names
EMC CLARiiON ALU reference "ALU 3" refers to emcpower3, Veritas disk access name emcpower5
EMC CLARiiON ALU reference "ALU 78" refers to emcpower4, Veritas disk access name emcpower7s2
EMC CLARiiON ALU reference "ALU 79" refers to emcpower2, Veritas disk access name emcpower6s2
Additional Content
For Third Party Driver(TPD) controlled devices, the effect of the namingscheme also depends on the vxdmpadm "tpdmode" attribute setting which is enclosure specific.
If the tpdmode is set to "pseudo", then TPD naming is used, regardless of the defined device namingscheme.
Note: To use enclosure-based naming for TPD devices, set the tpdmode to native for the given enclosure.
Steps:
To use ebn, the tpdmode must be set to native. Here is the procedure to switch to ebn.
See the vxdmpadm(1) man page for details.
# vxddladm set namingscheme=osn persistence=yes
# vxdmpadm setattr enclosure
# vxddladm set namingscheme=ebn persistence=yes
Examples of different namingschemes
Revised "vxdisk list" output whilst tpdmode=native and namingscheme=ebn
# vxdisk -e -o alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
disk_0 auto - (51dg) online c2t1d0s2 -
disk_1 auto - (50MP1RP5dg) online c2t2d0s2 -
disk_2 auto c2t0d0 rootdgrp4 online c2t0d0s2 -
emcpower0s2 auto - (datadg) online emcpower0c -
emcpower1s2 auto - (datadg) online emcpower1c -
emcpower5s2 auto - - error emcpower5c -
emcpower6s2 auto - (terrydg) online emcpower6c -
emcpower7s2 auto - - online emcpower7c -
emcpower8s2 auto - (newdg) online emcpower8c -
emcpower9s2 auto - (datadg) online emcpower9c -
emcpower10s2 auto - (datadg) online emcpower10c -
emcpower11s2 auto - (newdg) online emcpower11c -
emcpower12s2 auto - - online emcpower12c -
emcpower13s2 auto - - online emcpower13c -
emcpower14s2 auto - (testdg) online emcpower14c -
emcpower15s2 auto - - online emcpower15c -
emcpower16s2 auto - (datadg) online emcpower16c -
emcpower17s2 auto - (testdg) online emcpower17c -
emcpower18s2 auto - - online emcpower18c -
pp_emc_clariion0_0 auto - - error emcpower3 -
pp_emc_clariion0_1 auto - - online emcpower4c -
pp_emc_clariion0_2 auto - (rootdg) online emcpower2c -
Revised "vxdisk list" output whilst tpdmode=native and namingscheme=osn
# vxddladm set namingscheme=osn persistence=yes
# vxdisk -e -o alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
c1t500601683021C60Ed5s2 auto - - online emcpower4c -
c1t500601683021C60Ed7 auto - - error emcpower3 -
c1t500601693021C60Ed6s2 auto - (rootdg) online emcpower2c -
c2t0d0s2 auto c2t0d0 rootdgrp4 online c2t0d0s2 -
c2t1d0s2 auto - (51dg) online c2t1d0s2 -
c2t2d0s2 auto - (50MP1RP5dg) online c2t2d0s2 -
emcpower0s2 auto - (datadg) online emcpower0c -
emcpower1s2 auto - (datadg) online emcpower1c -
emcpower5s2 auto - - error emcpower5c -
emcpower6s2 auto - (terrydg) online emcpower6c -
emcpower7s2 auto - - online emcpower7c -
emcpower8s2 auto - (newdg) online emcpower8c -
emcpower9s2 auto - (datadg) online emcpower9c -
emcpower10s2 auto - (datadg) online emcpower10c -
emcpower11s2 auto - (newdg) online emcpower11c -
emcpower12s2 auto - - online emcpower12c -
emcpower13s2 auto - - online emcpower13c -
emcpower14s2 auto - (testdg) online emcpower14c -
emcpower15s2 auto - - online emcpower15c -
emcpower16s2 auto - (datadg) online emcpower16c -
emcpower17s2 auto - (testdg) online emcpower17c -
emcpower18s2 auto - - online emcpower18c -
As of 5.0 MP3 onwards, the /etc/vx/disk.info file contents and the "vxdisk list" output can be updated using the "vxddladm assign names" command.
# vxddladm assign names
Revised Volume Manager disk details
# vxdisk -e -o alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
disk_0 auto - (51dg) online c2t1d0s2 -
disk_1 auto - (50MP1RP5dg) online c2t2d0s2 -
disk_2 auto c2t0d0 rootdgrp4 online c2t0d0s2 -
emcpower0s2 auto - - online emcpower0c -
emcpower1s2 auto - (datadg) online emcpower1c -
emcpower2s2 auto - (rootdg) online emcpower2c - <<<< ALU "79"
emcpower3 auto - - error emcpower3 - <<<< ALU "3"
emcpower4s2 auto - - online emcpower4c - <<<< ALU "78"
emcpower5s2 auto - - error emcpower5c -
emcpower6s2 auto - (terrydg) online emcpower6c -
emcpower7s2 auto - - online emcpower7c -
emcpower8s2 auto - (newdg) online emcpower8c -
emcpower9s2 auto - (datadg) online emcpower9c -
emcpower10s2 auto - (datadg) online emcpower10c -
emcpower11s2 auto - (newdg) online emcpower11c -
emcpower12s2 auto - - online emcpower12c -
emcpower13s2 auto - (datadg) online emcpower13c -
emcpower14s2 auto - - online emcpower14c -
emcpower15s2 auto - - online emcpower15c -
emcpower16s2 auto - (datadg) online emcpower16c -
emcpower17s2 auto - (testdg) online emcpower17c -
emcpower18s2 auto - - online emcpower18c -
Revised EMC CLARiiON ALU references to Veritas Disk Access Names
EMC CLARiiON ALU reference "ALU 3" refers to emcpower3, Veritas disk access name emcpower3
EMC CLARiiON ALU reference "ALU 78" refers to emcpower4, Veritas disk access name emcpower4s2
EMC CLARiiON ALU reference "ALU 79" refers to emcpower2, Veritas disk access name emcpower2s2
Note: The EMC PowerPath pseudo names now correspond to the Veritas Disk access name (DA) as summarized above.
Issue/Introduction
