topic Re: Missing sas disk on BL860c in Operating System - HP-UX

Missing sas disk on BL860c

Maurice Commandeur — Tue, 22 Jul 2008 12:57:33 GMT

Guru's,
Someone ignited several blades and installed oracle production on it.
The blades are booted from the internal sas disks, and oracle ( about 10 DB's ) are on EMC disks.
Everything works like a charm, until I descided to look at the local disk layout, and that scared me a bit, because I really want those disks to be mirrored.
I can only see one sas disk with ioscan. If I start up xstm I see the same thing.

Could someone help me find my lost sas disk ?

output of lvlnboot -v
# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/disk/disk61_p2 -- Boot Disk
Boot: lvol1 on: /dev/disk/disk61_p2
Root: lvol3 on: /dev/disk/disk61_p2
Swap: lvol2 on: /dev/disk/disk61_p2
Dump: lvol2 on: /dev/disk/disk61_p2, 0

ouput of ioscan -fnC disk :
# ioscan -fnC disk
Class I H/W Path Driver S/W State H/W Type Description
==================================================================
disk 40 0/2/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP IR Volume
/dev/dsk/c4t0d0 /dev/dsk/c4t0d0s2 /dev/rdsk/c4t0d0 /dev/rdsk/c4t0d0s2
/dev/dsk/c4t0d0s1 /dev/dsk/c4t0d0s3 /dev/rdsk/c4t0d0s1 /dev/rdsk/c4t0d0s3
disk 0 0/3/0/0/0/0.164.0.2.0.0.0 sdisk CLAIMED DEVICE EMC SYMMETRIX
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
disk 1 0/3/0/0/0/0.164.0.2.0.0.7 sdisk NO_HW DEVICE EMC SYMMETRIX
---snip---

Re: Missing sas disk on BL860c

Torsten. — Tue, 22 Jul 2008 13:25:15 GMT

Don't worry.

Internal disks are here:

disk 40 0/2/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP IR Volume

Note:

HP IR Volume

This means Integrated RAID - a hardware RAID consisting of 2 disks!

Serach your ioscan for a sasdx device (e.g. /dev/sasd0) and run

sasmgr get_info -D /dev/sasd0 -q raid

You will find information about physical and logical drives there.

Re: Missing sas disk on BL860c

Robert-Jan Goossens_1 — Tue, 22 Jul 2008 13:31:57 GMT

Are you using a hardware raid solution?

Re: Missing sas disk on BL860c

Maurice Commandeur — Tue, 22 Jul 2008 13:47:11 GMT

Meanwhile ...
found this document: http://h18004.www1.hp.com/products/quickspecs/12671_div/12671_div.pdf
And that explained a lot...
The sas tools are not installed, going to fix that.
Thanks a lot guys ..

Re: Missing sas disk on BL860c

Maurice Commandeur — Tue, 22 Jul 2008 13:50:40 GMT

wrong link ... I mean this one :
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01157868/c01157868.pdf

Re: Missing sas disk on BL860c

Maurice Commandeur — Tue, 22 Jul 2008 13:52:35 GMT

:wq