topic Re: Disk showing product id as LOGICAL VOLUME in Operating System - HP-UX

Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 08:04:06 GMT

Hi,
Need information on why all the disks shows product id as LOGICAL VOLUME. These disks are internal server disks & not a lun.

# model
ia64 hp server rx6600
B.11.23

The server has three internal disks.
disk 1 0/6/0/0/0/0/0/0/0/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c1t0d0 /dev/dsk/c1t0d0s2 /dev/rdsk/c1t0d0 /dev/rdsk/c1t0d0s2
/dev/dsk/c1t0d0s1 /dev/dsk/c1t0d0s3 /dev/rdsk/c1t0d0s1 /dev/rdsk/c1t0d0s3
disk 3 0/6/0/0/0/0/0/0/0/0.0.1 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c1t0d1 /dev/rdsk/c1t0d1
disk 2 0/7/0/0/0/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0

# diskinfo /dev/rdsk/c5t0d0
SCSI describe of /dev/rdsk/c5t0d0:
vendor: HP
product id: LOGICAL VOLUME
type: direct access
size: 573367832 Kbytes
bytes per sector: 512

Re: Disk showing product id as LOGICAL VOLUME

Johnson Punniyalingam — Tue, 27 Oct 2009 08:08:20 GMT

diskinfo command does been issued under the guest ?

Re: Disk showing product id as LOGICAL VOLUME

Johnson Punniyalingam — Tue, 27 Oct 2009 08:15:29 GMT

Check below diskinfo showing "product id: Virtual LvDisk "

Example :-

SCSI describe of /dev/rdsk/c0t0d0:
vendor: HP
product id: Virtual LvDisk
type: direct access
size: 62914560 Kbytes
bytes per sector: 512
rev level: 0.04
blocks per disk: 125829120
ISO version: 0
ECMA version: 0
ANSI version: 4
removable media: no
response format: 2

Re: Disk showing product id as LOGICAL VOLUME

Matti_Kurkela — Tue, 27 Oct 2009 08:22:07 GMT

A rx6600 server configured for HP-UX may have a SmartArray P400 hardware RAID controller as a core storage card, depending on options chosen when ordering the server.

A SmartArray RAID controller will hide the actual physical disks from the OS, and present only the logical disks specified in the RAID configuration. Only the SmartArray management tools will see the actual physical disks.

I haven't seen a rx6600 with a SmartArray running a HP-UX, but I would expect it to look exactly like your situation.

Please check out the sasmgr command:

http://docs.hp.com/en/B3921-60631/sasmgr.1M.html

For example, run this (or similar) command to get more information on your disks:

sasmgr get_info -D /dev/sasd0 -q raid

MK

Re: Disk showing product id as LOGICAL VOLUME

Suraj K Sankari — Tue, 27 Oct 2009 08:30:44 GMT

Hi,

My answer might be funny but it workes so many times for me, I think your server need a reboot........

and then check

Suraj

Re: Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 08:32:59 GMT

# sasmgr get_info -D /dev/sasd0 -q raid
ERROR: Unable to open the file /dev/sasd0.
Please verify the correctness of the HBA device file specified
with the -D option.

I have logged in using root account.

Not sure whetehr restart will sovle the issue, but can try out that option also.
Any other clues...

Re: Disk showing product id as LOGICAL VOLUME

Torsten. — Tue, 27 Oct 2009 09:44:21 GMT

No issue at all!

Your disks are connected to a smartarray RAID controller.

Perform "ioscan -fn" and look for a "ciss" device.

Then use saconfig/sautil to get more information.

Example:

# saconfig /dev/ciss5

Your server is using a hardware RAID and cannot see individual disks!

Re: Disk showing product id as LOGICAL VOLUME

Torsten. — Tue, 27 Oct 2009 10:24:43 GMT

EXAMPLE:

from ioscan

...
ext_bus 0 0/5/0/0/0/0 ciss CLAIMED INTERFACE PCIe S
AS SmartArray P400 RAID Controller
/dev/ciss0
target 0 0/5/0/0/0/0.0 tgt CLAIMED DEVICE
disk 0 0/5/0/0/0/0.0.0 sdisk CLAIMED DEVICE
HP LOGICAL VOLUME
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
/dev/dsk/c0t0d0s1 /dev/rdsk/c0t0d0s1
/dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0s2
/dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s3
...

# saconfig /dev/ciss0

******************** SmartArray RAID Controller /dev/ciss0 ********************

Auto-Fail Missing Disks at Boot = disabled
Cache Configuration Status = cache enabled
Cache Ratio = 25% Read / 75% Write

---------- PHYSICAL DRIVES ----------

Location Ct Enc Bay WWID Size Status

Internal 1I 1 6 0x5000c50000a12345 36.4 GB OK
Internal 2I 1 1 0x500000e0176a1234 36.4 GB OK
Internal 2I 1 2 0x5000c50000ae1234 36.4 GB OK
Internal 2I 1 4 0x5000c50000ae1234 36.4 GB OK

---------- LOGICAL DRIVE 0 ----------

Device File = c0t0d0
RAID Level = 1+0
Size = 34699 MB
Stripe Size = 128 KB
Status = OK

Participating Physical Drive(s):

Ct Enc Bay WWID
2I 1 1 0x500000e0176a1234
2I 1 2 0x5000c50000ae1234

Participating Spare Drive(s):

None

...

# sautil /dev/ciss0

******************************************************************************
**** ****
**** S A U T I L S u p p o r t U t i l i t y ****
**** ****
**** for the HP SmartArray RAID Controller Family ****
**** ****
**** version A.02.12 ****
**** ****
**** (C) Copyright 2003-2007 Hewlett-Packard Development Company, L.P. ****
******************************************************************************

---- DRIVER INFORMATION ------------------------------------------------------

Driver State........................ READY

---- CONTROLLER INFORMATION --------------------------------------------------

Controller Product Number........... P400
Controller Product Name............. HP PCIe SmartArray P400
Hardware Path....................... 0/5/0/0/0/0
Serial Number....................... P61630D9SU1234
Device File......................... /dev/ciss0
Hardware Revision................... 'D'
Boot Block Revision................. 0.02
Firmware Revision (running)......... 4.06
Firmware Revision (in ROM).......... 4.06
Firmware Revision (inactive)........ 4.06
# of Logical Drives................. 2
# of Physical Disks Configured...... 4
# of Physical Disks Detected........ 4
Logical Drive Rebuild Priority...... 64 (medium)
Array Capacity Expansion Priority... 64 (medium)
Auto-Fail Missing Disks at Boot..... disabled
SCSI Transfer Detection Mode........ Auto Detect

---- ARRAY ACCELERATOR (CACHE) INFORMATION -----------------------------------

Array Accelerator Board Present?.... yes
Cache Configuration Status.......... cache enabled
Cache Ratio......................... 25% Read / 75% Write
Total Cache Size (MB)............... 208
Read Cache........................ 052
Write Cache....................... 156
Transfer Buffer................... 000
Battery Pack Count.................. 1
Battery Status (pack #1)............ ok

---- LOGICAL DRIVE SUMMARY ---------------------------------------------------

# RAID Size Status

0 1+0 34699 MB OK
1 1+0 34699 MB OK

...

Re: Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 10:38:10 GMT

Thanks, I can see two ciss devices.

# ioscan -fn |grep -i ciss
ext_bus 1 0/6/0/0/0/0/0/0/0/0 ciss CLAIMED INTERFACE PCIe SAS SmartArray P400 RAID Controller
/dev/ciss1
ext_bus 5 0/7/0/0/0/0 ciss CLAIMED INTERFACE PCIe SAS SmartArray P400 RAID Controller
/dev/ciss5

In saconfig, I can see there are 8 - 146 gb physical drives. What does logical drive indicate here. Does the logical drive here point the ioscan -funC disk ouput where it shows three logical disks?

# saconfig /dev/ciss5

******************** SmartArray RAID Controller /dev/ciss5 ********************

Auto-Fail Missing Disks at Boot = disabled
Cache Configuration Status = cache enabled
Cache Ratio = 25% Read / 75% Write

---------- PHYSICAL DRIVES ----------

Location Ct Enc Bay WWID Size Status

Internal 1I 1 4 0x5000c5000679e445 146.8 GB OK
Internal 1I 1 3 0x5000c5000679f341 146.8 GB OK
Internal 1I 1 2 0x5000c50006797db9 146.8 GB OK
Internal 1I 1 1 0x5000c50006799f95 146.8 GB OK
Internal 2I 1 8 0x5000c50006799c79 146.8 GB OK
Internal 2I 1 7 0x5000c50006798075 146.8 GB OK
Internal 2I 1 6 0x5000c5000679d671 146.8 GB OK
Internal 2I 1 5 0x5000c5000678b2ed 146.8 GB OK

---------- LOGICAL DRIVE 0 ----------

Device File = c5t0d0
RAID Level = 1+0
Size = 559929 MB
Stripe Size = 128 KB
Status = OK

Participating Physical Drive(s):

Ct Enc Bay WWID
1I 1 4 0x5000c5000679e445
1I 1 3 0x5000c5000679f341
1I 1 2 0x5000c50006797db9
1I 1 1 0x5000c50006799f95
2I 1 8 0x5000c50006799c79
2I 1 7 0x5000c50006798075
2I 1 6 0x5000c5000679d671
2I 1 5 0x5000c5000678b2ed

Participating Spare Drive(s):

None

# saconfig /dev/ciss1

******************** SmartArray RAID Controller /dev/ciss1 ********************

Auto-Fail Missing Disks at Boot = disabled
Cache Configuration Status = cache enabled
Cache Ratio = 25% Read / 75% Write

---------- PHYSICAL DRIVES ----------

Location Ct Enc Bay WWID Size Status

Internal 1I 1 12 0x5000c5000679e30d 146.8 GB OK
Internal 1I 1 11 0x5000c5000679dfc9 146.8 GB OK
Internal 1I 1 10 0x5000c5000679d761 146.8 GB OK
Internal 1I 1 9 0x5000c5000679d399 146.8 GB OK
Internal 2I 1 16 0x5000c5000679cff5 146.8 GB OK
Internal 2I 1 15 0x5000c5000679e575 146.8 GB OK
Internal 2I 1 14 0x5000c500063ffad9 146.8 GB OK
Internal 2I 1 13 0x5000c50006796275 146.8 GB OK

---------- LOGICAL DRIVE 0 ----------

Device File = c1t0d0
RAID Level = 1+0
Size = 139979 MB
Stripe Size = 128 KB
Status = OK

Participating Physical Drive(s):

Ct Enc Bay WWID
1I 1 12 0x5000c5000679e30d
1I 1 11 0x5000c5000679dfc9

Participating Spare Drive(s):

None

---------- LOGICAL DRIVE 1 ----------

Device File = c1t0d1
RAID Level = 1+0
Size = 419947 MB
Stripe Size = 128 KB
Status = OK

Participating Physical Drive(s):

Ct Enc Bay WWID
1I 1 10 0x5000c5000679d761
1I 1 9 0x5000c5000679d399
2I 1 16 0x5000c5000679cff5
2I 1 15 0x5000c5000679e575
2I 1 14 0x5000c500063ffad9
2I 1 13 0x5000c50006796275

Participating Spare Drive(s):

None

# ioscan -funC disk |pg
Class I H/W Path Driver S/W State H/W Type Description
=================================================================================
disk 0 0/0/2/1.0.16.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 0/6/0/0/0/0/0/0/0/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c1t0d0 /dev/dsk/c1t0d0s2 /dev/rdsk/c1t0d0 /dev/rdsk/c1t0d0s2
/dev/dsk/c1t0d0s1 /dev/dsk/c1t0d0s3 /dev/rdsk/c1t0d0s1 /dev/rdsk/c1t0d0s3
disk 3 0/6/0/0/0/0/0/0/0/0.0.1 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c1t0d1 /dev/rdsk/c1t0d1
disk 2 0/7/0/0/0/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c5t0d0 /dev/rdsk/c5t0d0

Re: Disk showing product id as LOGICAL VOLUME

Torsten. — Tue, 27 Oct 2009 11:02:58 GMT

The HP LOGICAL VOLUME from ioscan are the LUNs configured on the smartarrays.

You have 2 controllers, connected to all internal drives.

Re: Disk showing product id as LOGICAL VOLUME

Torsten. — Tue, 27 Oct 2009 11:09:29 GMT

BTW, did you notice the device file in this section?

---------- LOGICAL DRIVE 1 ----------

Device File = c1t0d1 <<====
RAID Level = 1+0
Size = 419947 MB
Stripe Size = 128 KB
Status = OK

Re: Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 11:11:50 GMT

Got it, thanks a lot.

Re: Disk showing product id as LOGICAL VOLUME

TTr — Tue, 27 Oct 2009 11:18:44 GMT

The server OS does not see the physical disks, it sees what the raid controllers present out. The LOGICAL VOLUME here has the same meaning as a LUN, it has nothing to do with the logical volume terminology that you use in LVM. As far as the OS is concerned, it is a disk that you can use to assign storage. (Note it is in capital letter just like any other disk signature).

You have 16 disks in your server not 8. The rx6600 has two disk cages (enclosures) of 8 disks each. Each enclosure is connected to one of the two P400 controllers.

For the first enclosure, all 8 disks are bound in a raid1+0 array (mirrored pairs) and into one logical volume of 560GB. Logical drive 0 at path

For the second enclosure, 2 disks are bound into one mirrored pair and one logical volume of 139GB and the remaining six disks are bound into 3 mirrored pairs, logical volume 1 of size 419GB.

You have to use these three array-logical-volumes the same way you use any other physical disk or LUN and put them under LVM and create LVM-logical-volumes over them.

The signature on the disk that ioscan and diskinfo read should not have been "LOGICAL VOLUME" it should have been something like "SA LUN" or "LOGICAL DISK"

Re: Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 11:30:50 GMT

Thanks, In this case if one of the disk goes bad, will it affect the entire logical volume. Is there any way to detect if one of the disk goes bad? Will the data be intact on the other disks?

Re: Disk showing product id as LOGICAL VOLUME

TTr — Tue, 27 Oct 2009 11:39:01 GMT

You can have several disks go bad and not lose data as long as the are not two bad disks in the same mirrored pair. So theoretically you can have 8 disks go bad and still continue to function as far as the OS is concerned.

You should be able to set up monitoring for the P400 controllers via the hp-ux system monitoring utilities, EMS/STM.

Re: Disk showing product id as LOGICAL VOLUME

Torsten. — Tue, 27 Oct 2009 11:40:20 GMT

This is one reason behind each RAID.

You will find messages in syslog, root's mailbox, your mailbox (if configured), HP SIM or somewhere else too.

You can always get the status via the sautil/saconfig commands.

To swap a failed disk, just swap it and you are done.

Re: Disk showing product id as LOGICAL VOLUME

TTr — Tue, 27 Oct 2009 11:45:06 GMT

Looks like you are new to the SA controllers. Take a look at this document

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00687518/c00687518.pdf

And this one (page 5 for STM/EMS monitoring)
http://docs.hp.com/en/J6369-90038/J6369-90038.pdf

Re: Disk showing product id as LOGICAL VOLUME

mjos — Tue, 27 Oct 2009 12:13:44 GMT

Thanks, I will go through those links.