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March 26th, 2008 17:00

Renaming emcpower pseudo-devices on two Linux cluster nodes

Hi again,
I need to "rename" the emcpower* pseudo-devices, but I don't know how to do.
I'm reading some how-to on poerlink site, but they're not for my current PowerPath version.
I've installed this version: EMCpower.LINUX-5.1.0-194.rhel5.i386.rpm

From my first node:
powermt display dev=all
Pseudo name=emcpowera
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH OCFS2]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdc SP A1 unlic alive 0 0
0 qla2xxx sdf SP B1 unlic alive 0 0
1 qla2xxx sdi SP A0 active alive 0 0
1 qla2xxx sdl SP B0 active alive 0 0

Pseudo name=emcpowerb
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH DG_DATA]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sda SP A1 unlic alive 0 0
0 qla2xxx sdd SP B1 unlic alive 0 0
1 qla2xxx sdg SP A0 active alive 0 0
1 qla2xxx sdj SP B0 active alive 0 0

Pseudo name=emcpowerd
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH DG_FRA]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdb SP A1 unlic alive 0 0
0 qla2xxx sde SP B1 unlic alive 0 0
1 qla2xxx sdh SP A0 active alive 0 0
1 qla2xxx sdk SP B0 active alive 0 0


From my second node:
powermt display dev=all
Pseudo name=emcpowerb
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH OCFS2]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdc SP A1 unlic alive 0 0
0 qla2xxx sdf SP B1 unlic alive 0 0
1 qla2xxx sdi SP A0 active alive 0 0
1 qla2xxx sdl SP B0 active alive 0 0

Pseudo name=emcpowera
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH DG_DATA]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sda SP A1 unlic alive 0 0
0 qla2xxx sdd SP B1 unlic alive 0 0
1 qla2xxx sdg SP A0 active alive 0 0
1 qla2xxx sdj SP B0 active alive 0 0

Pseudo name=emcpowerc
CLARiiON ID=CK200062401xxx [Cluster Oracle DWH]
Logical device ID=6006016040301900xxxxxxxxxxxxxxxx [DWH DG_FRA]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
0 qla2xxx sdb SP A1 unlic alive 0 0
0 qla2xxx sde SP B1 unlic alive 0 0
1 qla2xxx sdh SP A0 active alive 0 0
1 qla2xxx sdk SP B0 active alive 0 0

From my first node:
emcpadm getused
PowerPath pseudo device names in use:

Pseudo Device Name Major# Minor#
emcpowera 120 0
emcpowerb 120 16
emcpowerc 120 32 <--- no more used!!!
emcpowerd 120 48

From my second node:
emcpadm getused
PowerPath pseudo device names in use:

Pseudo Device Name Major# Minor#
emcpowera 120 0
emcpowerb 120 16
emcpowerc 120 32

I would like both nodes have emcpowera as [sdc, sdf, sdi, sdl],
emcpowerb as [sda, sdd, sdg, sdj], emcpowerd as [sdb, sde, sdh, sdk]

How can I do that ?

Thanks for your support,
Marco

Message was edited by:
Stefano Del Corno

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