Itanium disk allocation question

[Nyck_1]

I have just created a new disk group and have allocated one of my spare internal disks into it. When I run a vgdisplay against this disk group I get the following output for the Physical Volumes:-

--- Physical volumes ---
PV Name /dev/dsk/c2t1d0
PV Status available
Total PE 4374
Free PE 2811
Autoswitch On

But when I run the same command against the root volume group I'm getting an extra bit on the end of the PV Name:-

--- Physical volumes ---
PV Name /dev/dsk/c2t0d0s2
PV Status available
Total PE 4346
Free PE 1488
Autoswitch On

Is this because c2t0d0s2 is the root disk?

[Srikanth Arunachalam · Accepted solution]

Hi,

The s2 part of c2t0d0 will always be present in boot disk and is the location where LIF files (ISL, AUTO, HPUX, LABEL) will be stored.

Thanks,
Srikanth

[Nyck_1]

Thats what I thought but I wanted so be 100% sure.

[Ivan Krastev]

See naming convention - http://docs.hp.com/en/B2355-90950/ch06s01.html#diskname


Slices are :
s1 - EFI
s2 - HPUX
s3 - HPSP

regards,
ivan

[Nyck_1]

So when I ran the pvcreate for c2t1d0 should I of put the s2 on the end?

Or is this only down on root volumes?

[Ivan Krastev]

pvcreate is on physical disk - so use c2t0d0 only.

After partitioning disk with idisk (if you are using it for VG00) these 3 slices will be visible.

See mirroring root disks on Itanium - search here in previous threads.


regards,
ivan

[Nyck_1]

I just ran a man on pvcreate, this is what I should of done in the first place:-

Create a bootable physical volume for an Itanium-based system on raw
device /dev/rdsk/c1t0d0s2, and force the creation without
confirmation:

pvcreate -fB /dev/rdsk/c1t0d0s2

So as this is not a bootable volume then all is fine.