ioscan output

[Olga_1]

Hello does anybody know why I get so many devices for one internal disk and only 2 for another one. What does s1, s2 means?:
Itanium server HP 11i ver2

ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
===============================================
disk 1 1/0/0/3/0.6.0 sdisk CLAIMED DEVICE HP 73.4GMAX3073NC
/dev/dsk/c0t6d0 /dev/dsk/c0t6d0s2 /dev/rdsk/c0t6d0 /dev/rdsk/c0t6d0s2 /dev/dsk/c0t6d0s1 /dev/dsk/c0t6d0s3 /dev/rdsk/c0t6d0s1 /dev/rdsk/c0t6d0s3

disk 2 1/0/1/1/0/4/1.6.0 sdisk CLAIMED DEVICE HP 73.4GMAX3073NC
/dev/dsk/c3t6d0 /dev/rdsk/c3t6d0

Thank you.

[Coolmar]

Looks like disk1 is partitioned into "slices". I have never seen that with HP, but see it all the time with Solaris.

[Ivan Krastev · Accepted solution]

This is slices (usually 3 for disks) for Itanium machines running 11.23.

Normal section 1 is the Extensible Firmware Interface (EFI) partition, section 2 is the HP-UX system partition and section 3, it is the optional HP Service Partition (HPSP).

regards,
ivan

[spex]

Hi Olga,

Please see this thread:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=967274

PCS

[James R. Ferguson]

Hi Olga:

The "s" stands for "slice". Since you are running an Itanium server you need to be aware that LVM mirroring of the boot disk differs a bit from PA-RISC mirroring procedures. Be sure to read Appendix-A of this document:

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

Regards!

...JRF...

[Ivan Krastev]

Also you can create/list partitions using idisk - http://docs.hp.com/en/B2355-60105/idisk.1M.html


ivan

[Torsten.]

Hi,

these "slices" are and old tradition of HP-UX, almost forgotten in the versions 10 until now.

Now the Integrity servers are using them (partitions) to create different file systems (1. for EFI - FAT32, 2. for HPUX - LVM, 3. for service tools) for the boot disk(s).

This is also the reason for a different procedure to mirror the boot disks.

Your boot disks has c0t6d0 as its device file, but every partition gets its own device file too, first partition gets c0t6d0s1 ...

[Olga_1]

thank you