topic Re: initialize the disk drive in Operating System - HP-UX

initialize the disk drive

szhiyong — Wed, 24 Jul 2002 17:36:30 GMT

Hi,

I want to install a new disk drive. My workstation is HP-UX
B.10.20.

Would someone please tell me how to initialize the disk drive?

Thanks a lot!

zhiyong

Re: initialize the disk drive

Hai Nguyen_1 — Wed, 24 Jul 2002 17:44:49 GMT

1. shut down the server
2. Plug in the new disk. If this is an external disk, you do not have to power down the disk array.
3. Power back up the server
4. Check new device file for the new disk:
#ioscan -funC disk
5. If not shown, try:
# ioscan -fnC disk

Hai

Re: initialize the disk drive

Kevin Wright — Wed, 24 Jul 2002 17:46:46 GMT

Then run pvcreate to make the LVM metadata on the disk...if using LVM.

Re: initialize the disk drive

Sanjay_6 — Wed, 24 Jul 2002 17:48:02 GMT

Hi,

Once you have plugged / connected the disk to your system scsi channel (Make sure the scsi id of this disk is unique on that bus), if you have rebooted the system, the device files would have been generated automatically. Do a "ioscan -fnC disk" to see if the disk is sensed and the device file is seen. If the device file has not been generated, you can do so by running the command "insf -e" from the root prompt.

say the device file is /dev/dsk/cxdytz. First do a pvcreate on the disk,

pvcreate -f /dev/rdsk/cxtydz

Now create a vg using vgcreate or extend and existing vg to this disk using vgextend.

Refer to the hp manual "Managing Systems and Workgroups: A Guide for HP-UX System Administrators" for more help.

http://docs.hp.com/hpux/onlinedocs/B2355-90742/B2355-90742.html

Hope this helps.

Regds

Re: initialize the disk drive

S.K. Chan — Wed, 24 Jul 2002 17:48:24 GMT

First of all run .. (example c2t2d0)..
# /etc/diskinfo /dev/rdsk/c2t2d0
and if it shows the correct info especially the "size" as you expect it, then you're all set. Just use "pvcreate" to initialize the disk as a physical volume to be used in a volume group. For example ..
# pvcreate /dev/rdsk/c2t2d0
then continue with the rest of the steps ..
If you use SAM to create/extend a VG you don't even have to run "pvcreate".

Re: initialize the disk drive

Dave Chamberlin — Wed, 24 Jul 2002 17:50:51 GMT

You will need to decide if you will create a new volume group or add this disk to an existing group. To start do an ioscan to get the disk info and make sure it is detected, then:

pvcreate -f /dev/rdsk/cxtydz
where x y and z are your particulars.

To put the disk in its own volume group, say vg01, you would use like:
mkdir /dev/vg01
mknod /dev/vg01/group c 64 0x010000
vgcreate -e 20000 /dev/vg01 /dev/dsk/cxtydz

With the volume group created, you will need to create a logical volume:
lvcreate -L MM -n u01 /dev/vg01
where MM is how many megs, u01 will be the name of the logical vol.

then create the file system:
newfs -F vxfs /dev/vg01/ru01

the filesystem can then be mounted:
mount /dev/vg01/u01 /u01

You would then also add a line in your /etc/fstab file to mount the filesystem on bootup.
You should read then man pages for pvcreate, vgcreate, lvcreate and newfs.

Re: initialize the disk drive

Jose Mosquera — Wed, 24 Jul 2002 17:56:24 GMT

Hi,

Pls take a look this doc: http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90053/B2355-90053_top.html&con=/hpux/onlinedocs/B2355-90053/00/00/25-con.html&toc=/hpux/onlinedocs/B2355-90053/00/00/25-toc.html&searchterms=a%7cnew%7cdisk%7cConfiguring&queryid=20020724-115452

Rgds,

Re: initialize the disk drive

szhiyong — Wed, 24 Jul 2002 18:00:40 GMT

Hi,

Thanks a lot for fast reply!!

I check the "diskinfo /dev/rdsk/c1t4d0", but the size is 0 byte.

Even after I use pvcreate, I use "diskinfo /dev/rdsk/c1t4d0", the size is also o bytes.

Would someone tell me how to solve this problem?

zhiyong

Re: initialize the disk drive

Dave Chamberlin — Wed, 24 Jul 2002 18:16:16 GMT

You have to use diskinfo like this:
diskinfo /dev/rdsk/cxtydz

hope that helps.

Re: initialize the disk drive

Dave Chamberlin — Wed, 24 Jul 2002 18:20:26 GMT

ignore my last message. Diskinfo may not give all information for non-HP devices. What type of disk is it? What does the command: ioscan -fnC disk show?

Re: initialize the disk drive

szhiyong — Wed, 24 Jul 2002 23:14:40 GMT

Hi,

Thanks a lot for reply.

I fixed the problem by the sam. There is initialize the disk option in the sam. It is sdisk driver. But I do not how to use command to do this.

Is pvcreate used to initialize the disk drive.

zhiyong

Re: initialize the disk drive

Michael Tully — Wed, 24 Jul 2002 23:25:29 GMT

Hi,

Yes it is:

# /usr/sbin/pvcreate /dev/rdsk/c1t4d0
or to force it
# /usr/sbin/pvcreate -f /dev/rdsk/c1t4d0

HTH
Michael

Re: initialize the disk drive

szhiyong — Wed, 24 Jul 2002 23:39:10 GMT

Hi,All,

Thanks for reply.

I totally understand.

zhiyong

Re: initialize the disk drive

Fragon — Thu, 25 Jul 2002 00:06:15 GMT

For a new disk, you can make a full test first:
#mediainit /dev/rdsk/c1t4d0
(mediainit initializes mass storage media by formatting the media, writing and reading test patterns to verify media integrity,then sparing any defective blocks found.)
If success, you can then make LVM.

-Live as you wish-
Gerald Zhou

Re: initialize the disk drive

szhiyong — Thu, 25 Jul 2002 00:14:36 GMT

Hi,Gerald,

Thanks for help.I really appreciate it.

This command is realy help me to solve my problem.

zhiyong

Re: initialize the disk drive

Frank Slootweg — Thu, 25 Jul 2002 12:24:06 GMT

Just out of interest:

*Exactly* which type of disk drive was it (i.e. manufacturer/supplier, product number, etc.) and was it indeed a "new" disk or was it a disk which came from another system (If so, please some details about that system.)?

Also, is this a 'professional'/production/etc. system, or just some 'play' system?

Thanks.