physical volume "dev/dsk/c6t0d0" no lvm information

[Felipe Martinez]

I have a K580 with a ds2405 attached, the pvcreate over a fiber channel disk on the ds2405 spent like 5 minuts, after this i use vgcreate but i received a message
phisical volume "dev/dsk/c6t0d0" no lvm information.

wath can i do?

[Rajeev Shukla]

This means that pvcreate was not successfull on that disk. Try pvcreate once more and if it still takes long on that particular, i am affraid you might need to speak to HP enginner to have a look at the disk, it might be faulty.

[Michael Tully]

Were there any messages received after running the 'pvcreate' command the first time?

If not try to do a 'ioscan -f' and then re-run the 'pvcreate' if the hardware shows as claimed in the output.

# ioscan -f
# pvcreate -f /dev/rdsk/cxtydz

[Felipe Martinez]

Mike with ioscan i can see the 8 disks on the ds2405.

[Rajeev Shukla]

Try running pvcreate again,
if it doesnt take too long and doesn't return any error try adding to the VG
Otherwise if it takes 5 min, there is something wrong with the disk i guess

[Felipe Martinez]

Rajaev:

This ds2405 was attached to a va7110 before we moved it to the k580 in direct attach, can this affect us? may be the format than manage the va7110.

[T. M. Louah]

before runing any LVM command, try to query the disk for manufacturer info:
# diskinfo /dev/rdsk/c6t0d0
or # lssf /dev/rdsk/c6t0d0
make sure the info is correct Prod ID & size, if it doesnot work with either "cannot open device" or the size returned is "0" zero, bad news bad disk. Another way to verify a good disk by:
# dd if=/dev/rdsk/c6t0d0 of=/dev/null
when dd kicks in the drive usually starts to blink, ideally this should return same rec In & out if not or if it hangs you got a bad disk dude.

# ioscan -fnC fc will return the FC cards on your system with their device files like /dev/td0 if the K-class has newer card:
#fcmsutil /dev/td0 should tell you driver status.

Cheers,
T+