HP/UX 11iv3 LVM recovery procedure

this is obsolete doc -- see http://doc.nethence.com/ instead

Introduction

LVM is used by default nowerdays, when installing HP/UX. But LVM still isn't mentioned in the official Recovery Procedure (http://docs.hp.com/en/5992-6584/apes02.html). Here's the catch !

Note. using 11iv3 ioscan -fnkC (old school /dev/dsk, not /dev/disk, eventhough we're using Integrity)

Get to the Recovery Shell

Boot with your HP/UX 11iv3 install DVD and preferably the exact same version you used for system installation. Then choose,

Run an Expert Recovery Shell

Would you like to startup networking at this time? NO

x.  Exit to shell

Note. in case you need to get back to that menu, type "menu", not "exit"

Mount the root filesystem

Load the LVM tools,

loadfile lvm_wrapper pvck vgimport vgexport vgchange vgdisplay lvmcmd

Note. to load as much possible about LVM (unneeded),

#loadfile lvchange lvcreate lvdisplay lvextend lvlnboot lvm_wrapper lvmcmd lvreduce lvremove lvrmboot vgchange vgcreate vgdisplay vgexport vgextend vgimport vgreduce vgremove vgscan pvchange pvck pvcreate pvdisplay pvmove

Note. those won't load (not found) : lvmadm lvmerge lvmpcmd lvmrc lvsplit lvsync vgmodify pvremove

Search and check the PVs,

ioscan -fnkCdisk

pvck /dev/dsk/c0t0d0s2

Note. you need to have access to all VG's the physical volumes to get Quorum and import the VG.

Note. we prefer old school /dev/dsk path, not /dev/disk

Import and enable the VG,

vgimport vg00 /dev/dsk/c0t0d0s2

ls -l /dev/vg00

vgchange -a y vg00

vgdisplay -v

Note. /dev is a symlink to /RAMFS1/dev, but that doesn't matter

Note. if you forget to enable the VG, you'll get a "Cannot open /dev/vg00/rlvol3: No such device or address" when trying to fsck it.

Load the VxFS tools,

loadfile /sbin/fs/vxfs/fsck /sbin/fs/vxfs/mount

Check the root filesystem and mount it,

ls -l /dev/vg00/rlvol3 /dev/vg00/lvol3

/sbin/fs/vxfs/fsck -y /dev/vg00/rlvol3

mkdir /ROOT

/sbin/fs/vxfs/mount /dev/vg00/lvol3 /ROOT

Note. you may add "-o full" to the fsck command

Chroot in it and mount the rest

Get into the system,

loadfile chroot

chroot /ROOT /sbin/sh

Check the remaining filesystems,

cd /etc

cat fstab

fsck -y /dev/vg00/rlvol1

fsck -y /dev/vg00/rlvol4

fsck -y /dev/vg00/rlvol5

fsck -y /dev/vg00/rlvol6

fsck -y /dev/vg00/rlvol7

fsck -y /dev/vg00/rlvol8

note. 'rlvol3' is already mounted

note. don't check the 'rlvol2' swap

mount it all,

mount -a

bdf

Setup your environment,

/usr/local/bin/bash

export HOME=/home/root

cd ~/

Make LVM work properly inside the chroot,

cd /etc

rm -f lvmtab

vgscan

Fix things on Integrity

Check the partition table,

ll /dev/rdsk

idisk -p /dev/rdsk/c0t0d0

install EFI utilities,

/sbin/fs/fsdaemon -f 0 -w &

ps -ef | grep fsdaemon

mkboot -lcv /dev/dsk/c0t0d0

mkboot -el /dev/dsk/c0t0d0

install boot programs on device,

mkboot -l /dev/rdsk/c0t0d0

configure autoboot,

mkboot -a "boot /stand/vmunix" /dev/rdsk/c0t0d0

check,

efi_ls -d /dev/dsk/c0t0d0s1

efi_ls -d /dev/dsk/c0t0d0s1 EFI/HPUX

efi_cp -u -d /dev/dsk/c0t0d0s1 EFI/HPUX/  AUTO /tmp

cat /tmp/AUTO

rm -f /tmp/AUTO

lifls -C /dev/dsk/c0t0d0s2

note. EFI is in slice 1

note. LIF is in slice 2

note. "mkboot -l" for LVM

Define a primary boot device,

ioscan -fnkCdisk

setboot -p 0/0/0/0.0.0 -b on

check,

setboot

Update the BDRA (Boot Data Reserved Area) on bootable PVs, recover missing links to logical volumes,

lvlnboot -R

define root, boot, swap and dump volumes,

lvlnboot -r /dev/vg00/lvol3

lvlnboot -b /dev/vg00/lvol1

lvlnboot -s /dev/vg00/lvol2

lvlnboot -d /dev/vg00/lvol2

check,

lvlnboot -v

note. carefull, only run lvlnboot -R before -b as the former removes the boot lv config.

Generate "/stand/rootconf" for maintenance mode,

lvlnboot -c

check,

ll /stand/rootconf

Sync and reboot,

sync

cd /

reboot

Note. using "reboot" directly instead of "shutdown" since we're in recovery mode

References

http://sl-workstations.web.cern.ch/sl-workstations/documentation/SAGpart-4.html