System Adm » storage

Identify PV device in HP-UX 11.31

Lincoln Zuljewic Silva — Thu, 08 Sep 2011 18:44:30 +0000

In HP-UX 11.31, LVM doesn’t use “ctd’ (ie: /dev/rdsk/c2t1d0), but DSF to balance the throughput between many device paths., so if you need identify what physical device represent that logical device, you can use ioscan, for example:
server@root:/root # vgdisplay -v vg00 --- Volume groups --- VG Name                     /dev/vg00 VG Write Access             read/write VG Status                   available Max LV                      255 Cur LV                      12 Open LV                     12 Max PV                      16 Cur PV                      1 Act PV                      1 Max PE per PV               4385 VGDA                        2 PE Size (Mbytes)            16 Total PE                    4375 Alloc PE                    3998 Free PE                     377 Total PVG                   0 Total Spare PVs             0 Total Spare PVs in use      0 VG Version                  1.0 VG Max Size                 1122560m VG Max Extents              70160
--- Logical volumes --- LV Name                     /dev/vg00/lvol1 LV Status                   available/syncd LV Size (Mbytes)            2000 Current LE                  125 Allocated PE                125 Used PV                     1
LV Name                     /dev/vg00/lvol2 LV Status                   available/syncd LV Size (Mbytes)            16384 Current LE                  1024 Allocated PE                1024 Used PV                     1 (...)LV Name                     /dev/vg00/lvol12 LV Status                   available/syncd LV Size (Mbytes)            5120 Current LE                  320 Allocated PE                320 Used PV                     1 --- Physical volumes --- PV Name                     /dev/disk/disk4 PV Status                   available Total PE                    4375 Free PE                     377 Autoswitch                  On Proactive Polling           On

Note that the pv name is “disk4”, not c2t1d3.

With ioscan you can reverse map it:
server@root:/root # ioscan -m dsf Persistent DSF Legacy DSF(s) ======================================== /dev/rdisk/disk3 /dev/rdsk/c2t1d0 /dev/rdisk/disk4 /dev/rdsk/c2t0d0 /dev/rdisk/disk5 /dev/rdsk/c0t0d0

Now we know that the “disk4″ is the physical disk located in 12/0/1/1/0.0.0
root@brux0044:/root # ioscan -fnC disk Class I H/W Path Driver S/W State H/W Type Description ======================================================================== disk 1298 12/0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 73.4GMAP3735NC /dev/dsk/c2t0d0 /dev/rdsk/c2t0d0

How to check HBA card settings in HP-UX

Lincoln Zuljewic Silva — Thu, 23 Sep 2010 19:53:45 +0000

First of all, you need if the device exists:

myserver@root:/root # ioscan -fnC fc Class I H/W Path Driver S/W State H/W Type Description =================================================================== fc 1 0/0/4/1/0 fcd CLAIMED INTERFACE HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1) /dev/fcd1 fc 2 0/0/10/1/0 fcd CLAIMED INTERFACE HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1) /dev/fcd2 fc 3 0/0/12/1/0 fcd CLAIMED INTERFACE HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1) /dev/fcd3 fc 0 0/0/13/1/0 fcd CLAIMED INTERFACE HP AB378-60101 4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1) /dev/fcd0

Now, you can check the settings:
myserver@root:/root # fcmsutil /dev/fcd1 Vendor ID is = 0x001077 Device ID is = 0x002422 PCI Sub-system Vendor ID is = 0x00103c PCI Sub-system ID is = 0x0012d6 PCI Mode = PCI-X 133 MHz ISP Code version = 4.0.22 ISP Chip version = 3 Topology = PTTOPT_FABRIC Link Speed = 4Gb Local N_Port_id is = 0x020300 Previous N_Port_id is = None N_Port Node World Wide Name = 0x5001438002fdf7c3 N_Port Port World Wide Name = 0x5001438002fdf7c2 Switch Port World Wide Name = 0x200300051e365dca Switch Node World Wide Name = 0x100000051e365dca Driver state = ONLINE Hardware Path is = 0/0/4/1/0 Maximum Frame Size = 2048 Driver-Firmware Dump Available = NO Driver-Firmware Dump Timestamp = N/A Driver Version = @(#) libfcd.a HP Fibre Channel ISP 23xx & 24xx Driver B.11.23.06 /ux/core/isu/FCD/kern/src/common/wsio/fcd_init.c:Jun 23 2006,14:06:46

Check powerpath links in HP-UX

Lincoln Zuljewic Silva — Tue, 22 Dec 2009 20:22:43 +0000

To check if the powerpath links are up in HP-UX, you can use the following command:

# powermt display dev=all