HDD problem

[Fadia Almarei]

Dear All

I have the following error in my HP-UX 11.11 system in one of my disks
:The Logical Volume Manager shows this device file, /dev/dsk/c5t8d0,
with hardware path, 10/6/3/0.8.0, as belonging to Volume Group, vg00.
SAM has determined that this hardware path is not currently active
because either the device is disconnected, or this is not the primary
path to a multiple path physical volume. This results in incorrect
disk utilization information in the Disk Devices and Volume Group
lists."

i need to know the cause of the problem and how to solve it.
BR;
Fadia Almarei

[Ramesh S]

Hi

PLease try the following:

# ioscan -fnC disk | grep -i c5t8d0
Check the disk is CLAIMED

# diskinfo /dev/rdsk/c5t8d0
check the disk sizes and Block size.

# dd if=/dev/rdsk/c5t8d0 of-/dev/null bs=1024k count=1000
Check te integrity of disk.

# pvdisplay /dev/dsk/c5t8d0
Check the PV status -- AVAILABLE
Check the Alternate lin available or not.

# Check the related errors in /var/adm/syslog/syslog.log as well.

Thanks & Regards

Ramesh

[Fadia Almarei]

(napfep01:/)# ioscan -funC disk | grep -i c5t8d0
/dev/dsk/c5t8d0 /dev/rdsk/c5t8d0
(napfep01:/)# diskinfo /dev/rdsk/c5t8d0
diskinfo: can't SIOC_INQUIRY /dev/rdsk/c5t8d0: No such device or address
(napfep01:/)# dd if=/dev/rdsk/c5t8d0 of-/dev/null bs=1024k count=1000
dd: bad arg of-/dev/null
(napfep01:/)# dd if=/dev/rdsk/c5t8d0 of=/dev/null bs=1024k count=1000
(the green line is lighting)

(napfep01:/)# pvdisplay /dev/dsk/c5t8d0
--- Physical volumes ---
PV Name /dev/dsk/c5t8d0
VG Name /dev/vg00
PV Status unavailable
Allocatable yes
VGDA 2
Cur LV 18
PE Size (Mbytes) 8
Total PE 4340
Free PE 1855
Allocated PE 2485
Stale PE 695
IO Timeout (Seconds) default
Autoswitch On

[Ramesh S]

Hi

You haven't posted the "dd" output.It should give you "1000 recoed in and 1000 record out".

However, PV status is unavailable and 695 stale extents are there.

Sounds like a BAD DISK.

Thanks & Regards

Ramesh

[Shrikant Lavhate]

BAD DISK... hmmmmm
try this thing
http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

I recommend to have Ignite backup with you before you proceed.