Add 9GB DCHS-09F disk to HP-UX 11.11

[Bastings, M.M.G.]

Need to expand old testsystem G40 with disk, have 5 (model-20) SE disks available. Disk is recognised: (ioscan)
disk 3 52.4.0 disc3 CLAIMED DEVICE IBM DCHS09F CLAR09
/dev/dsk/c4t4d0 /dev/rdsk/c4t4d0
But SAM will not allow it to be added: pvcreate: could not open "physical volume /dev/rdsk/c4t4d0"
Anyone ever tried this?

[Domenico_5]

hi bastings

if you ran diskinfo /dev/rdsk/c4t4d0 what return??

[Bastings, M.M.G.]

# diskinfo /dev/rdsk/c4t4d0
diskinfo: can't open /dev/rdsk/c4t4d0: No such device or address
#

[S.K. Chan]

What does the log entries in SAM says ? Did you try using command line ..

# pvcreate /dev/rdsk/c4t4d0

just to see if it works ?

[Domenico_5]

Argh!!!!

You have a bad disk, you must phone to the support

good luck

[Bastings, M.M.G.]

The disk is alive, and the driver works, that is the conclusion form being present in the ioscan -fnCdisk list.
But the "internal format" is what it was in the HP Model-20 (nike-clarion) raid stripe configuration.
And next: it is not a supported HP disk
SAM fails at the pvcreate, manual it shows:
# pvcreate /dev/rdsk/c4t4d0
pvcreate: Couldn't open physical volume "/dev/rdsk/c4t4d0":
No such device or address
#
Any suggestions?

[John Carr_2]

Hi

have you tried the force option on pvcreate it will fail if it sees a previous configuration on the disk.

pvcreate -f /dev/rdsk/c4t4d0

john.

[Domenico_5]

Correct john

good suggestion!!!!!

sorry I haven't understand the correct configuration..

sorry again

[Bastings, M.M.G.]

Same error as before:
# pvcreate -f /dev/rdsk/c4t4d0
pvcreate: Couldn't open physical volume "/dev/rdsk/c4t4d0":
No such device or address
Tried to add the disk to /etc/disktab and reference it from within pvcreate:
# pvcreate -f -t DCHS09F /dev/rdsk/c4t4d0
pvcreate: Couldn't open physical volume "/dev/rdsk/c4t4d0":
No such device or address
#
Hooked the disk to a PC-W98 sw: Adaptec EZSCSI5
Disk is reported as present, params like cache, power and rev=HP53 can be read.
Dskbench32 runs fine (read/write?/seek random/seq test)
Disk looks ok....

[Michael Tully]

You may wish to try the 'mediainit' command on the disk. I don't have the syntax for your right now, but there is a man page for it.

One other thing I've seen before (not for a while) and that is sometimes a disk will will think it is write-protected for no apparent reason. Try the mediainit command first....

Cheers
~Michael~

[Bastings, M.M.G.]

Wile trying the /etc/disktab option, I also tried the mediainit. Could not open the device file either.
THE FINAL SOLUTION WAS:
Formatted the drive on a W98PC (in dos mode) using SCSIFMT.EXE (low level formatter) from the EZ-SCSI LITE V4.0 floppy's which were part of the adaptec 1510 scsi controller kit.
Lukky I still had this old (ISA) stuff.
After that I could add the SE drives without any problem using SAM to this 11.11 G40.
Thanks for all who cooperated on this!