topic Re: c1t1d1s? path question in Operating System - HP-UX

c1t1d1s? path question

Francis Flan — Wed, 17 Oct 2007 09:49:40 GMT

Newbie to Itanium here.....

What is the "s" at the end of the CTD path for?
Any links ? i cant find any.......

Does it change usual administration much?

Re: c1t1d1s? path question

Geoff Wild — Wed, 17 Oct 2007 09:57:47 GMT

slice

That's the slice of your disk (probably on vg00)

# ioscan -m dsf
Persistent DSF Legacy DSF(s)
========================================
/dev/rdisk/disk4 /dev/rdsk/c0t0d0
/dev/rdisk/disk5 /dev/rdsk/c2t1d0
/dev/rdisk/disk5_p1 /dev/rdsk/c2t1d0s1
/dev/rdisk/disk5_p2 /dev/rdsk/c2t1d0s2
/dev/rdisk/disk5_p3 /dev/rdsk/c2t1d0s3
/dev/rdisk/disk6 /dev/rdsk/c2t0d0
/dev/rdisk/disk7 /dev/rdsk/c3t2d0
/dev/rdisk/disk7_p1 /dev/rdsk/c3t2d0s1
/dev/rdisk/disk7_p2 /dev/rdsk/c3t2d0s2
/dev/rdisk/disk7_p3 /dev/rdsk/c3t2d0s3

Rgds...Geoff

Re: c1t1d1s? path question

Geoff Wild — Wed, 17 Oct 2007 10:03:41 GMT

http://docs.hp.com/en/msDeviceNaming/Mass_Storage_Device_Naming.pdf

http://docs.hp.com/en/5992-2905/ch03s02.html

IMPORTANT: The above output includes block device special files ending with s1, s2, or s3 (_p1, _p2, or _p3 for 11i v3 systems). These endings indicate an idisk partition on the disk. Do NOT use a partition as a cloning target!

Rgds...Geoff

Re: c1t1d1s? path question

J. Bravo — Wed, 17 Oct 2007 10:12:12 GMT

Hi!

For Itanium machines the boot disk has changed, it must be partitioned in order to include the EFI, HPUX and Service partitions:

c1t1d1s1 is the EFI system partition.

c1t1d1s2 is the HP-UX partition, so this partition represents a whole LVM disk on a PA-RISC system.

c1t1d1s3 is the Service partition, it's created for diagnostics installation.

Regards;

J. Bravo.

Re: c1t1d1s? path question

Duncan Edmonstone — Wed, 17 Oct 2007 10:56:54 GMT

Francis,

To answer your other question:

> Does it change usual administration much?

It changes the way boot disks are laid out and mirrored - see p26 of this whitepaper:

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

HTH

Duncan

Re: c1t1d1s? path question

Francis Flan — Wed, 17 Oct 2007 14:58:23 GMT

thanks for the explanations