Multipaths identification methods of a PV

[Arup_03]

Hi

How we can identify the multipaths of a PV in 11.23 & 11.31.

Thanks in advance

regards

Arup

P.S. This thread has been moved from HP-UX > System Administration to HP-UX > LVM and VxVM. - Hp Forum moderator

[Bill Hassell]

For 11.31, you can use:

# ioscan -m dsf
# ioscan -m hwpath

For 11.23, you are stuck with ioscan -knfC disk

and then look for the same t##d## in the  CTD device file.

[Arup_03]

Thank you,for 11.23 we can also confirm the same by vgdisplay command also.Correct me If I am worng!!

regards

Arup

[Bill Hassell]

>> for 11.23 we can also confirm the same by vgdisplay command also.

Yes, for any version of HP-UX using LVM, vgdisplay will show alternate links but only if the previous administrator added the alternate paths to the VG. A vgimport can also discover all the alternate paths that have been mapped to the server.

[Torsten.]

IMHO the best method for 11.23 is to use an array specific tool, e.g. evainfo, xpinfo, 3parinfo, depending on your array.

Example:

> xpinfo -il

Device File                 ALPA Tgt Lun Port  CU:LDev Type             Serial#

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

/dev/rdsk/c9t0d1             c9  00  01  CL2E  01:ed  OPEN-E           00060xxx
/dev/rdsk/c4t0d1             e1  00  01  CL1E  01:ed  OPEN-E           00060xxx
/dev/rdsk/c7t1d3             c7  01  0b  CL2F  02:27  OPEN-E           00063xxx
/dev/rdsk/c12t1d3            dc  01  0b  CL1G  02:27  OPEN-E           00063xxx

The other tools give similar output.

# evainfo -W
Lun WWN: 6005-08B4-0010-66FC-0009-E000-0073-0000
        /dev/rdsk/c1t1d4
        /dev/rdsk/c3t1d4
        /dev/rdsk/c17t1d4
        /dev/rdsk/c19t1d4