topic Re: How can I map CTD to /dev/disk devices? in Operating System - HP-UX

How can I map CTD to /dev/disk devices?

James Brand — Fri, 26 Jul 2013 13:08:25 GMT

We just received our first HP-UX 11.31 server. I'm only familiar with LVM on HP-UX 11.i where disk devices such as /dev/dsk/c0t8d0 were displayed in commands like "strings /etc/lvmtab" and "vgdisplay -v vg00", etc.

These commands now return /dev/disk/disk4_p2 instead, and I'm wondering how to correlate this to the output of ioscan and lssf /dev/dsk/* which shows the /dev/dsk/ctd numbers?

Any help would be appreciated.

Re: How can I map CTD to /dev/disk devices?

Matti_Kurkela — Fri, 26 Jul 2013 13:47:48 GMT

In 11.31, the ioscan command got a lot of new options.

In this particular case,

ioscan -m dsf

is probably exactly what you're looking for.

Or if you want to map the new-style hardware paths :

ioscan -m hwpath

Re: How can I map CTD to /dev/disk devices?

Patrick Wallek — Fri, 26 Jul 2013 14:00:49 GMT

You should probably read through this white paper:

The Next Generation Mass Storage Stack HP-UX 11i v3

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01915618/c01915618.pdf

It should explain a lot of the new concepts that you haven't seen before.

Re: How can I map CTD to /dev/disk devices?

James Brand — Fri, 26 Jul 2013 14:09:25 GMT

Thanks Matti. Looks like things have changed a bit.

My goal was to see what disks are available before creating as OS recovery image using the 'drd clone' command.

# ioscan -m dsf
Persistent DSF           Legacy DSF(s)
========================================
/dev/rdisk/disk3         /dev/rdsk/c0t8d0
/dev/rdisk/disk4         /dev/rdsk/c0t8d1
/dev/rdisk/disk4_p1      /dev/rdsk/c0t8d1s1
/dev/rdisk/disk4_p2      /dev/rdsk/c0t8d1s2
/dev/rdisk/disk4_p3      /dev/rdsk/c0t8d1s3

So I'm assuming c0t8d0 and c0t8d1 are separate disks. vg00 contains /dev/disk/disk4_p2 and a pvcreate of /dev/rdisk/disk3 ran without complaint.

Jim