topic Re: Synchronizing primary disk in Operating System - HP-UX

Synchronizing primary disk

Niraj_2 — Fri, 14 May 2004 04:23:49 GMT

Hi,

On HP-UX 11, both our primary disks are down and PV Status is unavailable.

After inserting a new primary disk, what should be done so that system sees the physical disk for e.g. vgdisplay can detect PV status as available.

Apart from the above question, appreciate if you can point me to a document / web link which has basic information related to generic hardware management UNIX commands.

br,Niraj.

Re: Synchronizing primary disk

G. Vrijhoeven — Fri, 14 May 2004 04:29:37 GMT

Hi,

If you made a vgcfgbackup i would advice a vgcfgrestore on the physical volume.

Documentation can be found on:

http://docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/5187-2216/5187-2216_top.html&con=/hpux/onlinedocs/5187-2216/00/00/53-con.html&toc=/hpux/onlinedocs/5187-2216/00/00/53-toc.html&searchterms=vgcfgrestore&queryid=20040514-032907

Regards,

Gideon

Re: Synchronizing primary disk

Trond Haugen — Fri, 14 May 2004 04:38:37 GMT

You need to vgcfgrestore to the new disk and then re-activate the VG (vgchange -a y VG).

Regards,
Trond

Re: Synchronizing primary disk

Naveej.K.A — Fri, 14 May 2004 04:40:44 GMT

hi niraj,

When you say, both primary disks, do you mean both the mirrored disks. then its time for you to start restoring your data.

If its your root hard disk, the ignite tape which you have created, would be handy.

When you say, generic hardware management, i feel you are reffering to utilities/programs which comes with hpux for hardware monitoring. There are online and offline tools available for the same. More information is available @

http://www.docs.hp.com/hpux/diag/index.html

with best wishes
naveej

Re: Synchronizing primary disk

John Carr_2 — Fri, 14 May 2004 04:48:43 GMT

Hi

If you have replaced the boot disk then you need to boot from your mirror disk to be able to resync. If you cannot boot the system you will need to restore a backup or reinstall the o/s.

John.

Re: Synchronizing primary disk

Niraj_2 — Fri, 14 May 2004 08:00:23 GMT

Hi,

Sorry for asking a unclear question. Herez what I am looking for:

Disk configuration is as follows
a) 2 primary (1 root, other logs)
b) 2 mirrored disks
c) lvol lvol0 on root, and lvol1 on logs

Questions:
1) If one of primary disk is is removed physically and put back in, will the synchronization work automatically ?

2) Both primary disks are removed and put back in, will the synchronization work automatically ?

3) If synchronization does not happen automatically, what should be done to get the primary disks syncronized ?

br,Niraj.

NOTE: After rebooting from mirrored disk, output of vgdisplay is as below:

********************************************
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c1t2d0":
The specified path does not correspond to physical volume attached to
this volume group
vgdisplay: Warning: couldn't query all of the physical volumes.

********************************************

Re: Synchronizing primary disk

Niraj_2 — Fri, 14 May 2004 08:03:38 GMT

Also, the disks are not corrupted, they were physically removed for doing some hardware monitoring tests.

br,Niraj.