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Luxadm display not showing a LUN as expected

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Operating Systems Solaris Luxadm display not showing a LUN as expected
# 1  
Old 06-24-2016
Luxadm display not showing a LUN as expected
Hi all, I have the following LUN which is showing OK with its two paths:

Code:
DEVICE PROPERTIES for disk: /dev/rdsk/c23t500507630A3BC579d123s2
  Vendor:               IBM
  Product ID:           2107900
  Revision:             3010
  Serial Num:           75WB0114900
  Unformatted capacity: 30720.000 MBytes
  Write Cache:          Enabled
  Read Cache:           Enabled
    Minimum prefetch:   0x0
    Maximum prefetch:   0x16
  Device Type:          Disk device
  Path(s):

  /dev/rdsk/c23t500507630A3BC579d123s2
  /devices/pci@700/pci@2/pci@0/pci@3/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a3bc579,7b:c,raw
    LUN path port WWN:          500507630a3bc579
    Host controller port WWN:   21000024ff45d3d7
    Path status:                O.K.
  /dev/rdsk/c14t500507630A1BC579d123s2
  /devices/pci@600/pci@1/pci@0/pci@4/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a1bc579,7b:c,raw
    LUN path port WWN:          500507630a1bc579
    Host controller port WWN:   21000024ff45d2bd
    Path status:                O.K.

Now, I have instead this LUN, on the same server, which is a strange state:

Code:
root@MYHOST# luxadm display /dev/rdsk/c14t500507630A1BC579d124s2
DEVICE PROPERTIES for disk: /dev/rdsk/c14t500507630A1BC579d124s2
  Vendor:               IBM
  Product ID:           2107900
  Revision:             3010
  Serial Num:           75WB0116146
  Unformatted capacity: 512000.000 MBytes
  Write Cache:          Enabled
  Read Cache:           Enabled
    Minimum prefetch:   0x0
    Maximum prefetch:   0x16
  Device Type:          Disk device
  Path(s):

  /dev/rdsk/c14t500507630A1BC579d124s2
  /devices/pci@600/pci@1/pci@0/pci@4/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a1bc579,7c:c,raw
    LUN path port WWN:          500507630a1bc579
    Host controller port WWN:   21000024ff45d2bd
    Path status:                O.K.

root@MYHOST# luxadm display /dev/rdsk/c23t500507630A3BC579d124s2
DEVICE PROPERTIES for disk: /dev/rdsk/c23t500507630A3BC579d124s2
  Vendor:               IBM
  Product ID:           2107900
  Revision:             3010
  Serial Num:           75WB0116146
  Unformatted capacity: 512000.000 MBytes
  Write Cache:          Enabled
  Read Cache:           Enabled
    Minimum prefetch:   0x0
    Maximum prefetch:   0x16
  Device Type:          Disk device
  Path(s):

  /dev/rdsk/c23t500507630A3BC579d124s2
  /devices/pci@700/pci@2/pci@0/pci@3/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a3bc579,7c:c,raw
    LUN path port WWN:          500507630a3bc579
    Host controller port WWN:   21000024ff45d3d7
    Path status:                O.K.

Basically the paths are not aggregated as the LUN above, and I cannot understand why, to be honest. As you can see the Serial Number for that LUN is identical on both paths.
Any help is very welcome, thanks!
--
Diego
# 2  
Old 06-24-2016
Hi Diego,

What does ># uname -a return.

What does the out put of ># echo | format look like for the drive.

Regards

Gull04
# 3  
Old 06-24-2016
Quote:
Originally Posted by gull04
Hi Diego,

What does ># uname -a return.

What does the out put of ># echo | format look like for the drive.

Regards

Gull04
Hi gull04,
here the output:

Code:
uname -a
SunOS es0bzsq5 5.10 Generic_150400-11 sun4v sparc sun4v

Code:
echo|format|grep c14t500507630A1BC579d124
     204. c14t500507630A1BC579d124 <IBM-2107900-3010 cyl 63998 alt 2 hd 64 sec 256>

echo|format|grep c23t500507630A3BC579d124
     502. c23t500507630A3BC579d124 <IBM-2107900-3010 cyl 63998 alt 2 hd 64 sec 256>

Thanks!
# 4  
Old 06-24-2016
Please post entire format output for one disk without grep (working and not working)

Multipath enabled devices will have under the number and device name /scsi_vhci/... while other will have hardware path /pci ... or similar.

Are you sure you presented the LUN on both paths ?
Have in installed additional FC cards in the meantime ?

Does :
Code:
mpathadm list lu

for the specified (no working) disk one path or there is no output for that disk ?

Hope that helps.
Best regards
Peasant.
# 5  
Old 06-24-2016
This is also very useful:

Code:
-bash-3.00# for port in `fcinfo hba-port | grep Port | awk '{ print $4 }'`; do
> fcinfo remote-port -ls -p $port
> done

That will show you the targets and LUNs each HBA initiator port on your server can access.
# 6  
Old 06-24-2016
Quote:
Originally Posted by Peasant
Please post entire format output for one disk without grep (working and not working)

Multipath enabled devices will have under the number and device name /scsi_vhci/... while other will have hardware path /pci ... or similar.
Hi Peasant, here the output you asked:

Code:
working LUN
 501. c23t500507630A3BC579d123 <IBM-2107900-.166 cyl 3838 alt 2 hd 64 sec 256>
          /pci@700/pci@2/pci@0/pci@3/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a3bc579,7b
 203. c14t500507630A1BC579d123 <IBM-2107900-.166 cyl 3838 alt 2 hd 64 sec 256>
          /pci@600/pci@1/pci@0/pci@4/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a1bc579,7b

not working LUN
   204. c14t500507630A1BC579d124 <IBM-2107900-3010 cyl 63998 alt 2 hd 64 sec 256>
          /pci@600/pci@1/pci@0/pci@4/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a1bc579,7c
   502. c23t500507630A3BC579d124 <IBM-2107900-3010 cyl 63998 alt 2 hd 64 sec 256>
          /pci@700/pci@2/pci@0/pci@3/pci@0/pci@2/SUNW,qlc@0,1/fp@0,0/ssd@w500507630a3bc579,7c

The path are physical, as multipathing is done using Veritas software on those controllers.

Quote:
Originally Posted by Peasant
Are you sure you presented the LUN on both paths ?
Have in installed additional FC cards in the meantime ?
Yes, as I can enquiry them via luxadm. No additional FC cards added in the meantime

Quote:
Originally Posted by Peasant
Does :
Code:
mpathadm list lu

for the specified (no working) disk one path or there is no output for that disk ?

Hope that helps.
Best regards
Peasant.
There is not output for none of the disks I listed (both working and not working), as MPXIO is not enabled on those controllers.

Thanks!
# 7  
Old 06-24-2016
Hi Diego,

Just out of curiosity, how many LUNS are on the system all-together including internals if there are any?

Gull04
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