HPUX 11.23 v2 and pvlink EVA4000

[WilliamSmith11]

Hi some questions about pvlink:

1-Is pvlink installed by default in HPUX?

I have presented a lun from my EVA4000 to the HPUX box with two HBAs.

disk 3 255/255/0/0.0 sdisk CLAIMED DEVICE HSV200 HP
/dev/dsk/c20t0d0 /dev/rdsk/c20t0d0
disk 4 255/255/0/0.1 sdisk CLAIMED DEVICE HSV200 HP
/dev/dsk/c20t0d1 /dev/rdsk/c20t0d1
disk 5 255/255/0/0.2 sdisk CLAIMED DEVICE HSV200 HP
/dev/dsk/c20t0d2 /dev/rdsk/c20t0d2
disk 6 255/255/0/0.3 sdisk CLAIMED DEVICE HSV200 HP
/dev/dsk/c20t0d3 /dev/rdsk/c20t0d3

These are the four path that appear, that in fine.

2- Whitch command I do to create the vg01, may be some like this:

# vgcreate -f /dev/vg01 /dev/dsk/c20t0d0
/dev/dsk/c20t0d1 /dev/dsk/c20t0d2 /dev/dsk/c20t0d3

Thank you for comments

W.S

[Khairy]

hi william,

pvlink is already built in hpux LVM software.

To see if the the disks are same Lun, i usually perform the following my rp box:

# echo "0x2008?4D" | adb /dev/dsk/c1t15d0
2008: 850980666 1200539846 850980666 1200539847
# echo "0x2008?4D" | adb /dev/dsk/c3t15d0
2008: 850980666 1200549607 850980666 1200539847

as you can see in the 3rd field, the values are different and that show there are 2 different disks.

If the 3rd field show same value. That means there are the same disks and it is save to vgextend the disk for pvlinks.

1) create a vg
# pvcreate /dev/rdsk/c20t0d0
# mkdir /dev/vg01
# mknod /dev/vg01/group c 64 0x010000
# vgcreate /dev/vg01 /dev/dsk/c20t0d0

2) assuming c20t0d1 is the same disk, just perform vgextend.
# vgextend /dev/vg01 /dev/dsk/c20t0d1

3) vgdisplay and you will see alternate pvlinks is set.
# vgdisplay -v vg01

[Torsten.]

Please see my comments in your other thread:

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1194836