
UNSOLVED
in Powerpath, disk numbering starts at 3?
I have a windows 2008 server. Without PowerPath, Disk numbering for the SAN Drives in the storage tab of Windows Server manager starts at #1. But after installing Powerpath, it starts at Disk 3. Disk 1 and 2 show up as offline and I can't bring them online or anything - I don't think they're actual disks.
Has anyone had this problem, if it is a problem, and was there a solution?
Thanks,
Steven
Has anyone had this problem, if it is a problem, and was there a solution?
Thanks,
Steven
Responses (19)
Solutions (0)
Allen Ward
6 Operator
•
2124 Posts
1070
0
Posted September 30th, 2009 10:00
When you right click on the disk (1 or 2) in disk manager what options do you have?Reply - Allen, I've tried reinstalling PowerPath and also removing the LUNs from the storage group and then adding them back in (with PowerPath installed), but no change
Here is the output for the Powermt command
Pseudo name=harddisk3
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100A80F6904D0A2DE11 [REPO3_Backups]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun0 c3t0d0 SP A0 active alive 0 0
3 port3\path0\tgt1\lun0 c3t1d0 SP B0 active alive 0 0
Pseudo name=harddisk4
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=600601602409110024CF4267D0A2DE11 [REPO3_Data]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun1 c3t0d1 SP A0 active alive 0 0
3 port3\path0\tgt1\lun1 c3t1d1 SP B0 active alive 0 0
Pseudo name=harddisk5
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100FA7A6EB9D0A2DE11 [REPO3_LOG]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun2 c3t0d2 SP A0 active alive 0 0
3 port3\path0\tgt1\lun2 c3t1d2 SP B0 active alive 0 0
Pseudo name=harddisk6
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100FA03EDD9D5A2DE11 [REPO3_Partition_1]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun3 c3t0d3 SP A0 active alive 0 0
3 port3\path0\tgt1\lun3 c3t1d3 SP B0 active alive 0 0
Pseudo name=harddisk7
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100AC17A849D6A2DE11 [REPO3_Partition_2]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun4 c3t0d4 SP A0 active alive 0 0
3 port3\path0\tgt1\lun4 c3t1d4 SP B0 active alive 0 0
Pseudo name=harddisk8
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100AD17A849D6A2DE11 [REPO3_Partition_3]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun5 c3t0d5 SP A0 active alive 0 0
3 port3\path0\tgt1\lun5 c3t1d5 SP B0 active alive 0 0
Pseudo name=harddisk9
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100AE17A849D6A2DE11 [REPO3_Partition_4]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun6 c3t0d6 SP A0 active alive 0 0
3 port3\path0\tgt1\lun6 c3t1d6 SP B0 active alive 0 0
Pseudo name=harddisk10
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100AF17A849D6A2DE11 [REPO3_Partition_5]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun7 c3t0d7 SP A0 active alive 0 0
3 port3\path0\tgt1\lun7 c3t1d7 SP B0 active alive 0 0
Pseudo name=harddisk11
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100B017A849D6A2DE11 [REPO3_Partition_6]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun8 c3t0d8 SP A0 active alive 0 0
3 port3\path0\tgt1\lun8 c3t1d8 SP B0 active alive 0 0
Pseudo name=harddisk12
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100A2799331D3A2DE11 [REPO3_Quorum]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun9 c3t0d9 SP A0 active alive 0 0
3 port3\path0\tgt1\lun9 c3t1d9 SP B0 active alive 0 0
Pseudo name=harddisk13
CLARiiON ID=APM00055200044 [NYCEAPIREPO05&06]
Logical device ID=6006016024091100B0C67465D1A2DE11 [REPO3_TempDB]
state=alive; policy=BasicFailover; priority=0; queued-IOs=0
Owner: default=SP B, current=SP B Array failover mode: 1
==============================================================================
---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
3 port3\path0\tgt0\lun10 c3t0d10 SP A0 active alive 0 0
3 port3\path0\tgt1\lun10 c3t1d10 SP B0 active alive 0 0Reply Allen Ward
6 Operator
•
2124 Posts
1070
0
Posted September 30th, 2009 10:00
So you provisioned the LUNs to the server before installing PowerPath? It sounds like once the OS knew about the multiple paths to the LUN, it didn't want to "forget" about them, even though with PowerPath in place, there is a new "disk" which presents the LUNs paths consolidated.
We don't have any Win2k8 yet, so I'm not sure what the exact menu option is, but in previous versions you could "remove disk" to clear them from Disk Manager. Unfortunately this might not work depending on how Windows sees these paths. You might end up having to remove the LUN from the host before you can clear it up, and then when you present it back it should come in clean (since PP is already in place).Reply - first thing that jumps out is policy, make sure policy is set to ClarOpt. Use "powermt set policy=co dev=all". Also you only have two paths to each disk, for best performance/fault tolerance it is EMC best practice to zone each HBA to SPA and SPB, for example:
HBA1 - SPA0/SPB0
HBA2 - SPA2/SPB2
i don't these items are the reason you are seeing disk numbering starting from 3, but in definitely something to think about, at least policy for sure. What failover mode did you set to in Connectivity status on Clariion ?Reply

bencrookEMC
30 Posts
1070
0
Posted September 30th, 2009 08:00