logical volume on emc needs extending

[Michael Burns_7]

I need to add 2gb of space to a logical volume.

the server see it as /dev/vg00/lvol7.

on the EMC Navisphere console, I only see things listed similiar to c3t6d0... (not a unix guy, just trying to hold down the fort till we hire a new one)

I have done some digging and found lvdisplay command... here's what the server shows me...

root@sapapp2:/usr/sap> lvdisplay /dev/vg00/lvol7
lvdisplay: Warning: couldn't query physical volume "/dev/dsk/c3t6d0":
The specified path does not correspond to physical volume attached to
this volume group
lvdisplay: Warning: couldn't query all of the physical volumes.
--- Logical volumes ---
LV Name /dev/vg00/lvol7
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 2048
Current LE 128
Allocated PE 256
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation strict
IO Timeout (Seconds) default

root@sapapp2:/usr/sap>

Now... I'm guessing that if I go back to the EMC and look at c3t6d0 for this particular machine I would be looking at the correct disk?

Can somebody point me in the right direction on this one...

It's an HP RP7410 connected to an EMC Clariion cx600 if that helps.

thanks

[Joseph Loo]

hi,

not sure if the disk, /dev/dsk/c3t6d0 is in working condition. could you perform this:

# pvdisplay /dev/dsk/c3t6d0
and
# diskinfo /dev/dsk/c3t6d0
and
# ioscan -fnC disk

please reply the output of the command given above.

regards.

[Michael Burns_7]

the first two gave no results... ioscan -fnC disk >disk.txt gave me a lot of information but I did not find the device I was looking for listed...
i attached the output file.

[Joseph Loo]

hi,

from ioscan, i do not see the disk, c3t6d0, which means that the disk could be bad.

i just like to confirm if that disk is still there:

# diskinfo /dev/rdsk/c3t6d0
# dmesg
# lvdisplay -v /dev/vg00/lvol7

i will need the outputs.

regards.

[Andrew Fong]

Please post output of:

strings /etc/lvmtab
vgdisplay -v /dev/vg00
before further investigation is possible.

C3t6d0 might have failed and not recognized by the system. Chances are C3t6d0 might not be in /etc/lvmtab or /dev/vg00. You might need to run vgexport vgimport to fix up the vg00 discrepancy before you talk about adding 2GB of space.

Regards
Andrew