topic Re: File system creation in Operating System - HP-UX

File system creation

Consty — Mon, 06 Apr 2009 17:27:10 GMT

Hi,

I have one bad disk housing a file system, I would like to remove it, re-create the file system and restore the backup. How can I do
as a newbe on HpUx.

Thanks
Consty

Re: File system creation

Robert-Jan Goossens — Mon, 06 Apr 2009 19:09:24 GMT

Hi Consty,

We need a bit more info.
What HPUX version are you running?
What is the current status?
Is the filesystem stll active?
Did you already replace the disk?

Could you post the output of
# vgdisplay -v /dev/vgxx

Regards,
Robert-Jan

Re: File system creation

Consty — Tue, 07 Apr 2009 05:58:54 GMT

Hi,

-HPUX Version 10.20
-Current Status : O.S is OK, only the filesystem concerned unavailable.
-File system Not Active
-Disk not yet replaced
-Vgdisplay showed :
vgdisplay: Volume group not activated.
vgdisplay: Cannot display volume group "/dev/vg03".

Thanks

regards
Consty

Re: File system creation

T G Manikandan — Tue, 07 Apr 2009 06:53:20 GMT

please check if vgdisplay -v /dev/vg03

to see if that is the only disk associated with that vg.

Re: File system creation

sandeepbodkhe_1 — Tue, 07 Apr 2009 10:29:34 GMT

Hi,

Scenario : you have a disk that is dead and still in the system.
since disk is not available file systems is also unavailable. and. you want to replace a disk and restore the data from backup onto that Lv/filesystem right.

You need to :

Remove the failed disk from existing Vg using Pv key (since Pv is not accessible)

Since, You are not Having LVM OLR, you need to identify the correct disk and take it out.( if it is already dead. and disk is type of hot plugable)then insert a hot plugable disk in that slot, Do ioscan then insf. Record the device file name for that new disk.

Do pvcreate on that disk.
Do vgcfgrestore on that disk.
Activate Vg if required using -q n option
Create Lv and then file system
Mount it on original mount point and then restore backup

Sandeep

Re: File system creation

Frank de Vries — Tue, 07 Apr 2009 10:56:33 GMT

The best roadmap to replace and reconfigure a bad disk , is this White Paper.

Never leave home without it !!

It is a flowchart guide to guide you through the whole process.

http://maben.homeip.net/static/computers/HP/hpux/When%20Good%20Disks%20Go%20Bad.pdf

I can strongly recommend it.
(A lot of the above mentioned tips and answered are covered, but in a clear consice structured approach)

No need to ever panic.