topic Re: pvcreate error on fc lun in Operating System - HP-UX

pvcreate error on fc lun

Prokopets — Tue, 08 Jun 2010 13:11:44 GMT

Hi!
I'm trying to mount a lun from storage, but i've got an error when i run pvcreate:
=========
# pvcreate -f /dev/rdsk/c6t0d2
pvcreate: Error: Couldn't read LVMREC for the physical volume "/dev/rdsk/c6t0d2".
[Error: -1]
=========

i tried to do this via SMH - with same result. Here's the output of ioscan:

=========
# ioscan -C disk
H/W Path Class Description
=================================================================
1/0/0/3/1.2.0 disk Optiarc DVD RW AD-5200A
1/0/6/1/0.4.4.0.0.0.1 disk HP HSV300
1/0/6/1/0.4.5.0.0.0.1 disk HP HSV300
1/0/6/1/0.5.6.255.0.0.0 disk SUN LCSM100_F
1/0/6/1/0.5.6.255.0.0.2 disk SUN LCSM100_F
1/0/6/1/0.5.6.255.0.0.3 disk SUN LCSM100_F
1/0/6/1/0.5.6.255.0.0.4 disk SUN LCSM100_F
1/0/6/1/0.5.6.255.0.0.5 disk SUN LCSM100_F
1/0/12/1/0/4/0.0.0 disk HP LOGICAL VOLUME
1/0/14/1/0.5.6.255.0.0.0 disk SUN LCSM100_F
1/0/14/1/0.5.6.255.0.0.2 disk SUN LCSM100_F
1/0/14/1/0.5.6.255.0.0.3 disk SUN LCSM100_F
1/0/14/1/0.5.6.255.0.0.4 disk SUN LCSM100_F
1/0/14/1/0.5.6.255.0.0.5 disk SUN LCSM100_F
=========

and LUN properties from SMH:

=========
LUN H/W Path 64000/0xfa00/0xa
Persistent Device File /dev/disk/disk18
Legacy H/W Path(s) 1/0/6/1/0.5.6.255.0.0.2
1/0/14/1/0.5.6.255.0.0.2
Legacy Device File(s) /dev/dsk/c6t0d2
/dev/dsk/c5t0d2
Device Identifier
Alias "sun_st_400_1"
World Wide ID 0x600a0b8000389a62000007cc4bdf8347
Size 400.0 GB
Block Size (bytes) 512
Capacity (blocks) 838860800
Use unused
Device Health online
Device Type direct access
Instance Number 18
Total Path Count 2
Device Class disk
Driver esdisk
State UNOPEN
Vendor "SUN "
Product "LCSM100_F "
Serial Number "SX73102519 "
Firmware Revision "0670"
SCSI Protocol Revision 5
=========

What can be wrong here?

Re: pvcreate error on fc lun

melvyn burnard — Tue, 08 Jun 2010 13:22:40 GMT

Is the LUn writeable?
try doing:
dd if=/stand/vmunix of=/dev/rdsk/c6t0d2
bs=1024k count=100

If that fails, then there is a problem with the LUN.
If it works, try doing the pvcreate command again

Re: pvcreate error on fc lun

Robert-Jan Goossens — Tue, 08 Jun 2010 13:24:32 GMT

Hi,

--
State UNOPEN
--

You need to have a look at the configuration of the lun on the Sun San.

Regards,
Robert-Jan

Re: pvcreate error on fc lun

Prokopets — Tue, 08 Jun 2010 13:32:54 GMT

melvyn burnard:
# dd if=/dev/zero of=/dev/rdsk/c6t0d2 bs=1024k count=100
I/O error
2+0 records in
1+1 records out
Robert-Jan Goossens:
I suspect the lun is presented to other port, that's not visible for OS:

=======
1/0/6/1/0.5.6.255.0.0.2
1/0/14/1/0.5.6.255.0.0.2 c6t0d2
c5t0d2 unused - 2 400.0 GB SUN LCSM100_F
=======

Only two paths are here, but should be four, i think. I'l try to look at the storage config and check the cables.

Thanks for answers!