Replace local Boot Disks on rx2600 (EFI)

[Christian Marquardt_1]

Hello,
does anyone know a good documentation how to replace an boot disk on a rx2600 Itanium server with HP/UX?
If I replace the boot disks with older boot disks they doesn't boot automatically. What have I to do????

regards
Christian

[Robert-Jan Goossens]

Christian,

Check this doc.

Title: Replace failed root and non-root LVM disks on Itanium.
Document ID: KBRC00014036

http://www4.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000079971585

Regards,
Robert-Jan

[RAC_1]

I do not know exact procedure, but what you can do is as follows. (Assuming that boot disk is mirrored)
First, take mirored lvols out. (reduce mirror copies from problematic disk.)
1. lvreduce -m 0 /dev/vg00/lvolx /dev/dsk/cxtxdx (You may have to use -k option if disk has problems.)
2. Once, all lvols are reduced successfully, reduce the disk from VG. Shutdown and replace disk.
3. Follow boot disk mirror procedure again. (it is little different depdning on OS version-if 11.22 or 11.23.)

[Christian Marquardt_1]

Hello,
I dont need to make additional disk bootable. I need to replace the two original boot disks with another (older) boot disks. In my opinion EFI writes some signature to the boot disk and if I replace the original disks with older boot disks the EFI brings up an error message and I have to write some new signature on the older boot disks to start automatically from the older disks.

[Dineshkumar]

Hi

If its mirror disk follow this steps

# vi /tmp/partitionfile
EFI 500MB
HPUX 100%
HPSP 400MB

# echo yes | idisk -wf /tmp/partitionfile /dev/rdsk/c4t6d0
# rm /tmp/partitionfile
# insf ?e
# pvcreate -B /dev/rdsk/c4t6d0s2
# mkboot -e -l /dev/dsk/c4t6d0
# efi_fsinit -d /dev/rdsk/c4t6d0s3
# vgcfgrestore -n vg00 /dev/rdsk/c4t6d0s2
# pvchange -a n /dev/dsk/c4t6d0s2
# vgcfgrestore -n vg00 /dev/rdsk/c4t6d0s2
# mkboot -e -l /dev/dsk/c4t6d0
# efi_fsinit -d /dev/rdsk/c4t6d0s3
# vgcfgrestore -n vg00 /dev/rdsk/c4t6d0s2
# pvchange -a y /dev/dsk/c4t6d0s2
# vgchange -a y vg00
# vgsync vg00
# lvlnboot -r /dev/vg00/lvol3 /dev/vg00
# lvlnboot -b /dev/vg00/lvol1 /dev/vg00
# lvlnboot -s /dev/vg00/lvol2 /dev/vg00
# lvlnboot -d /dev/vg00/lvol2 /dev/vg00
# lvlnboot -v (to verify the results)
# vgdisplay -v /dev/vg00 (to verify the results)
# setboot -a (Alternate Boot device path)

Regards,
Dineshkumar

[RAC_1]

Are old disks with 11.23 or 11.11?

[Christian Marquardt_1]

The old disks are with 11.23

[RAC_1]

Are these disks from same server or some other server? Just put them and do you see them as bootable disk at boot time on PDC?

[Christian Marquardt_1]

These disks are from this server but these are older versions. The last installation was done on new disk and these are the earlier boot disks of this server. Now we have to bring the machine up with the earlier boot disks.