Can't manage an unmanaged powerpath device

did you run cfgmgr after rmdev to rediscover it again ?

Hi Tim,

What PowerPath version are you running?

With old versions you needed to follow this procedure to remove devices from the host:

1.        Perform a powermt remove for each device that is being unmapped.  (This updates the information in the Powerpath0 driver).

2.        Perform an rmdev –dl for each PowerPath device that is being removed from the host. (This deletes the old entries and characteristics from the ODM).

3.        Perform an rmdev –dl the underlying hdisks for these devices.  (This step is not necessary but is recommended).

4.        At this point issue a savebase –v command. (This updates the phase 1 device attributes in the boot logical volume.)

5.        The decommissioned device can be removed from the host now.

6.        At this point it is safe to add additional storage to the host and run cfgmgr and powermt config.

Regards

# powermt display unmanaged

CLARiiON ID=APM00111702746

Logical device ID=600601600BC12C00962DA1176516E311

Vendor ID=DGC     ; Product ID=RAID 0         

===============================================

-------------------- Host ---------------------

HW Path                            I/O Paths  

===============================================

fscsi0                             hdisk116 

fscsi2                             hdisk120 

fscsi2                             hdisk146 

fscsi0                             hdisk3   

# rmdev -Rdl hdisk116

hdisk116 deleted

# rmdev -Rdl hdisk120

hdisk120 deleted

# rmdev -Rdl hdisk146

hdisk146 deleted

# rmdev -Rdl hdisk3 

hdisk3 deleted

# powermt display unmanaged

No unmanaged devices found.

# savebase -v

saving to '/dev/hd5'

541 CuDv objects to be saved

5115 CuAt objects to be saved

121 CuDep objects to be saved

478 CuVPD objects to be saved

841 CuDvDr objects to be saved

4 CuPath objects to be saved

0 CuPathAt objects to be saved

0 CuData objects to be saved

0 CuAtDef objects to be saved

Number of bytes of data to save = 700489

Compressing data

Compressed data size is = 114813

        bi_start     = 0x3600

        bi_size      = 0x1a20000

        bd_size      = 0x1a00000

        ram FS start = 0x917590

        ram FS size  = 0x10a75f8

        sba_start    = 0x1a03600

        sba_size     = 0x20000

        sbd_size     = 0x1c081

Checking boot image size:

        new save base byte cnt = 0x1c081

Wrote 114817 bytes

Successful completion

# powermt config

# powermt display unmanaged

No unmanaged devices found.

# cfgmgr

# powermt config          

# powermt display unmanaged

CLARiiON ID=APM00111702746

Logical device ID=600601600BC12C00962DA1176516E311

Vendor ID=DGC     ; Product ID=RAID 0         

===============================================

-------------------- Host ---------------------

HW Path                            I/O Paths  

===============================================

fscsi0                             hdisk116 

fscsi2                             hdisk120 

fscsi2                             hdisk146 

fscsi0                             hdisk3   

#

What now?

Hi again Tim,

I should have probably asked this before, but have you tried a "powermt manage" command?

powermt manage dev=xxx

Regards

In your case it should be "dev=600601600BC12C00962DA1176516E311"

I would suggest that you open a case with EMC support.

It might be that the status of the Clariion class is "manage_incomplete" or "unmanage_incomplete" which would require further troubleshooting.

Regards

What xxx do I use? I expected the hdiskpower name to be listed when i did the powermt display unmanaged, but it wasn't.

I actually deleted the line from /etc/emc/mpaa.excluded and now the device doesn't show up again when I do a powermt manage even after the savebase -v and the cfgmgr/powermt config. Putting the line back in the mpaa.excluded file at least brings the device back as unmanaged.

# powermt display unmanaged

CLARiiON ID=APM00111702746

Logical device ID=600601600BC12C00962DA1176516E311

Vendor ID=DGC     ; Product ID=RAID 0         

===============================================

-------------------- Host ---------------------

HW Path                            I/O Paths  

===============================================

fscsi0                             hdisk116 

fscsi2                             hdisk120 

fscsi2                             hdisk146 

fscsi0                             hdisk3   

# powermt manage dev=600601600BC12C00962DA1176516E311

Error: manage of device 600601600BC12C00962DA1176516E311 failed

#

Tim,

Could you run the following on each?

lsdev -Cc disk | grep hdisk3

lsdev -Cc disk | grep hdisk116

lsdev -Cc disk | grep hdisk120

lsdev -Cc disk | grep hdisk146