diskinfo return a 0 bytes size

[Thi Vu]

Hello everyone,

I'd just added a new 18Gbytes disk drive and when I did the diskinfo command, I got this:

# diskinfo /dev/rdsk/c0t11d0
SCSI describe of /dev/rdsk/c0t11d0:
vendor: SEAGATE
product id: ST318436LC
type: direct access
size: 0 Kbytes
bytes per sector: 0

What can I do to fix this?

TIA
Thi

[Patrick Wallek]

Are you sure the disk is good? Apparently HP-UX saw the disk since it created the device file.

What happens if you do a:

# dd if=/dev/rdsk/c0t11d0 of=/dev/null bs=4m

Does it succeed or does it error out?

What type of machine is this on? What SCSI interface is it on? Is it the correct type of disk for the SCSI card it is attached to?

[Sanjay_6]

Hi,

If diskinfo reports the size as "0", the disk is bad.

Try to get a replacement and try.

Hope this helps.

Regds

[Bill McNAMARA_1]

The only time this wouldn't be a bad disk is when it was the 'phantom disk' or 'phantom lun'.

If you have a SCSI target, it t11, you will always have a d0 behind it, even if it exists or not.

what does
ioscan -fnk
return?

Later,
Bill

[Thi Vu]

Patrick and Bill

This is what I got from the command:

dd read error: Invalid argument
0+0 records in
0+0 records out

Also, the ioscan -fnk return:

target 5 8/4.11 tgt CLAIMED DEVICE
disk 2 8/4.11.0 sdisk CLAIMED DEVICE SEAGATE ST318436LC
/dev/dsk/c0t11d0 /dev/rdsk/c0t11d0

TIA
Thi

[Sanjay_6]

Hi,

Looks like you have a faulty disk.

Hope this helps.

Regds

[Jeff Schussele]

Hi This,

I agree with the others - sounds like a bad disk.
But if it had "lived" somewhere else - another array for ex - it's possible it has a strange low-level on it.
If its in an HP array you could try to do a format (not mediainit) by:

format /dev/rdsk/c0t11d0

Rgds,
Jeff