disk shows up in "/etc/lvmtab" but not in "/etc/ioscan -nfC disk"

[Jerry Sims]

root@CTNUXAPA(bighorn) # lvlnboot -v
lvlnboot: Couldn't query physical volume "/dev/dsk/c4t5d0":
The specified path does not correspond to physical volume attached to
this volume group
*********
# pvdisplay /dev/dsk/c4t5d0
pvdisplay: Warning: couldn't query physical volume "/dev/dsk/c4t5d0":
The specified path does not correspond to physical volume attached to
this volume group
pvdisplay: Warning: couldn't query all of the physical volumes.
pvdisplay: Couldn't retrieve the names of the physical volumes
belonging to volume group "/dev/vg00".
pvdisplay: Cannot display physical volume "/dev/dsk/c4t5d0".
**********

strings /etc/lvmtab
/dev/vg00
/dev/dsk/c4t6d0
/dev/dsk/c6t6d0
/dev/dsk/c4t5d0
/dev/dsk/c6t5d0
************
/etc/ioscan -nfC disk*
disk 1 10/0.6.0 sdisk CLAIMED DEVICE SEAGATE ST34572WC
/dev/dsk/c4t6d0 /dev/rdsk/c4t6d0
disk 35 10/8.5.0 sdisk CLAIMED DEVICE SEAGATE ST34572WC
/dev/dsk/c6t5d0 /dev/rdsk/c6t5d0
disk 36 10/8.6.0 sdisk CLAIMED DEVICE SEAGATE ST34572WC
/dev/dsk/c6t6d0 /dev/rdsk/c6t6d0
disk 2 10/12/5.2.0 sdisk CLAIMED DEVICE TOSHIBA CD-ROM XM-5701
TA
/dev/dsk/c7t2d0 /dev/rdsk/c7t2d0

[Sanjay_6 · Accepted solution]

Hi Jerry,

Looks like you have a faulty disk at 10/0.5.0 this should be the internal disk in the server cabinet. Do a complete ioscan (ioscan -fn) and see if something shows up at 10/0.5.0 . Also try to do a diskinfo for /dev/rdsk/c4t5d0 and see if something shows up

diskinfo -v /dev/rdsk/c4t5d0

Hope this helps.

Thanks

[A. Clay Stephenson]

Hi Jerry:

This is pretty classic. You have a dead drive.

[Sridhar Bhaskarla]

Try doing lssf and diskinfo on this disk and see what exactly has happened. Sometimes even if the disk is bad, it will still show up ioscan. If it is a bad disk, replace it with a new one and do a vgcfgrestore and restore the data from the backup.

-Sri

[Santosh Nair_1]

Sounds like you have a bad drive. Hopefully this is just a mirror of one of the other disk (probably c6t5d0). Replace the disk and resync the mirrors (if necessary).

-Santosh

[Gatis Visnevskis]

Be careful with these ST34572WC drives!!
We have 2 dead drives this year.
And exactly after end of 3 year hardware support.

And, BTW, these disks have some problem - it is not possible to save crash-dump on these drives. This is a known problem.