topic Re: Hard Disk in Operating System - HP-UX

Hard Disk

Sarkis Canon — Sun, 17 Feb 2002 06:44:58 GMT

Hi Everybody,
We are adding a 4G hard disk to our E35 server
running HP-UX 10.20, ioscan detects the disk
and the vendor, but when we try to create a
volume group via SAM we get a message that the
disk is unknown and therefore it is ignored.
The hard disk is not brand new, but it was working perfect on another system with HPUX 9.04. Any ideas ? Thank you all.

Re: Hard Disk

Ravi_8 — Sun, 17 Feb 2002 07:27:24 GMT

Hi,

if the system is detecting the newly added harddisk, check /dev/dsk , whether file has been created for that disk.
then #pvcreate -f /dev/dsk/cxtxdx (cxtxdx is the new file created for added harddisk)
#vgextend vgxx /dev/rdsk/cxtxdx.
where vgxx is the volume group to be extended

Re: Hard Disk

Michael Tully — Sun, 17 Feb 2002 07:48:09 GMT

Hi,

From the command line post the output of this command:

# /usr/sbin/ioscan -fn

We need to determine whether it is a driver issue or the system doesn't recognise the type of disk.

Michael

Re: Hard Disk

Sanjay_6 — Sun, 17 Feb 2002 08:41:21 GMT

Hi,

First do and "ioscan" and find out the disk device file name. Then do a diskinfo for the ear device for the disk,

diskinfo -v /dev/rdsk/cxtydz

If this works. Next try to do a pvcreate "pvcreate -f /dev/rdsk/cxtydz". Next you can add the disk using command line or you can use sam to add the disk. If you still have problems, can you post the error message you are getting. IF the diskinfo command doesn't work, can you post your ioscan output and the results of the diskinfo command.

Hope this helps.

Regd

Re: Hard Disk

Bill Hassell — Sun, 17 Feb 2002 18:15:58 GMT

SAM has a list of hardcoded disk ID's stored in a table, so if you are not up to date on patches, thios disk may not be present. As mentioned, just using pvcreate and then vgcreate (after creating the /dev/vgXX directory and using mknod to create the group file), you'll accomplish what SAM does automatically (when it knows the disk ID).

Re: Hard Disk

Sanjay_6 — Sun, 17 Feb 2002 19:24:46 GMT

Hi,

Like bill has suggested, you /etc/disktab entries should be up-to-date. Though for a 4GB disk you should not be having problem with the disktab entries.

Hope this helps.

Regds

Re: Hard Disk

Sarkis Canon — Tue, 19 Feb 2002 10:19:56 GMT

Thank you all guys, as Bill has suggested I believe it is a patch problem, pvcreate could not detect the disk. The question now is which
patch should be installed to update the disktab file

Re: Hard Disk

Sarkis Canon — Tue, 19 Feb 2002 10:20:12 GMT

Thank you all guys, as Bill has suggested I believe it is a patch problem, pvcreate could not detect the disk. The question now is which
patch should be installed to update the disktab file.