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Go to SolutionRenaming 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
removed possibly sensitive data
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
removed possibly sensitive data
7220
0
Posted March 26th, 2008 17:00
if the letter is already taken ..can you rename to something other emcpower device ..that will free up the slot for you to maneuver around. Also i see that your policy is set to BasicFailover ..are you using the licensed version?7220
0
Posted March 26th, 2008 17:00
Thanks for your reply.
Currently these two machines are not licensed. I'm sure my manager has requested new license for these new machines.
Is there a correlation between emcpower* pseudo-devices and an unlicensed PowerPath version ?
Now I'm reading the man page of emcpadm and trying to use the rename options.7220
0
Posted March 26th, 2008 17:00
no correlation at all ..just wanted to make sure that policy is set to ClarOpt if you do have license installed, once you do get the license, install it and set policy to ClarOpt to get the benefits of load-balancing/failover.
7220
1
Posted March 26th, 2008 17:00
I've read your suggested doc and it was useful just like the "man emcpadm" command.
Just for other readers. I solved using the following commands:
From node1:
emcpadm getused
and then
emcpadm rename -s emcpowera -t emcpowere
emcpadm rename -s emcpowerb -t emcpowerf
emcpadm rename -s emcpowerd -t emcpowerg
From node2:
emcpadm getused
and then
emcpadm rename -s emcpowerb -t emcpowere
emcpadm rename -s emcpowera -t emcpowerf
emcpadm rename -s emcpowerc -t emcpowerg
Thanks,
Marco7220
0
Posted June 3rd, 2008 01:00
Hi I try to rename /dev/emcpowerb, but it seems to be used.
I know, it is not used. This happens on a linux 5.0 x64 system.
Any help is appreciated.
Stefan7220
0
Posted June 3rd, 2008 23:00
Stefan,
the command "emcpadm getfreepseudos" will show you if this if free or not.
This may be something SAC should take a look at if the device is not showing up there and is not showing in powermt display dev=all.5167
0
Posted April 5th, 2021 16:00
So rename pseudos' does not work well on boot form san devices. How to you rename the pseudo of a boot from san device because for the device in use errors not due to the pseudo name taken but that its an open boot disk on Linux?
5115
0
Posted April 6th, 2021 09:00
Hello,
You might give this article a look to see if it helps you at all:
However, if the disk is busy, and with this being a boot from SAN, I'd expect it is, you may need to consider taking a new disk and renaming it to suit your needs, then migrating the kernel over to it.
Please let me know if this helps.
rawstorage
4 Apprentice
•
423 Posts
7220
0
Posted March 26th, 2008 17:00