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Operating Systems HP-UX How to recover Hp-ux O/S Disk from Mirro Disk Post 67155 by Kelam_Magnus on Monday 21st of March 2005 04:30:22 PM
Old 03-21-2005
Quote:
Originally Posted by waqaralam
Dear friend
Thanks for your reply. I'll try do as you describe.
so i just only add a new disk and sync it

Regards;
Waqar Alam
No, if it is a root disk you must do a series of commands as well.

You probably already figured it out, but i will post some instructions. First of all, in many cases the disk, if it is truly dead can be pulled and replaced hot-swappable.

Run diskinfo and pvdisplay on the disk device. Diskinfo should give you an error if the disk is dead. IF however, the disk is partially alive then I would suggest shutdown and come up to single user mode and do the same steps.

Some folks recommend reducing the mirror, but that is overkill imho...if you have an older box, K-class or older, it might be a more cautious approach.



pvcreate -B /dev/rdsk/c4t6d0 ## may not be needed.
vgextend /dev/vg00 /dev/dsk/c4t6d0
mkboot /dev/rdsk/c4t6d0
mkboot -a "hpux -lq" /dev/rdsk/c4t6d0
lifcp /dev/dsk/c4t6d0:AUTO
mkboot -b updatediaglif -p ISL -p AUTO -p HPUX -p LABEL /dev/rdsk/c4t6d0
mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p AUTO -p HPUX -p LABEL /dev/rdsk/c4t6d0
vgcfgrestore -n /dev/vg00 /dev/rdsk/c4t6d0
vgchange -a y /dev/vg00
vgsync /dev/vg00
 

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volrootmir(8)						      System Manager's Manual						     volrootmir(8)

NAME
volrootmir - Mirror areas necessary for booting to a new disk SYNOPSIS
/usr/sbin/volrootmir [-a] [nconfig=count] target_disk [swap=target_partition] OPTIONS
Specifies that all volumes on the system disk be mirrored, not just the root and swap volumes, rootvol and swapvol. DESCRIPTION
The volrootmir script causes a mirror copy of areas of the root disk involved in booting to be made on the specified target disk. When used without the -a option, volrootmir adds mirrors of the root and swap volumes and allocates them on the new disk. In addition, all disk regions required for booting are set up and partitions for the new volume mirrors are created. When used with the -a option, volrootmir mirrors all in-use partitions on the system disk. To mirror a swap volume that is on a separate disk from the root volume, the swap attribute must be used to specify a separate target for the swap mirror. The target disk(s) must be at least as large as the sum of the sizes of rootvol and swapvol. Also, the physical disk should not have any disk partition in use. This script can be called from the voldiskadm menus by choosing the Mirror volumes on a disk operation. ATTRIBUTES
Specifies the number of log copies and copies of the configuration database, for example, nconfig=2. Specifies that the swap volume, swapvol, be mirrored on a separate disk, as specified by target_partition. EXAMPLES
The following command mirrors the rootvol and swapvol volumes onto the target disk, dsk3. This command will fail if swapvol is on a differ- ent disk from rootvol. # volrootmir dsk3 The following command mirrors rootvol, swapvol, and any other volumes on the root disk onto the target disk, dsk3. This command will fail if swapvol is on a different disk from rootvol. # volrootmir -a dsk3 The following command mirrors rootvol on disk dsk3, swapvol onto partition dsk7d, and any other volumes on the root disk onto disk dsk3. This command will fail if swapvol is on the same disk as rootvol. # volrootmir -a dsk3 swap=dsk7d The following command mirrors rootvol onto disk dsk3 and swapvol onto partition dsk7d. This command will fail if swapvol is on the same disk as rootvol. # volrootmir dsk3 swap=dsk7d SEE ALSO
volintro(8), voldiskadm(8) volrootmir(8)
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