topic Re: V class not booting from alt path in Operating System - HP-UX

V class not booting from alt path

Ruan_3 — Tue, 22 Jul 2003 11:15:17 GMT

Hi all

I wish to mirror my the root disk on a V 2250 server running HP-UX 11i with the March 2003 patches. If I reboot the server after completing the steps and I type sea, only the primary boot disk is displayed. bo alt also yields an error message stating that the alternate disk is not a LIF volume.

Here are the commands I executed:

# pvcreate -f -B /dev/rdsk/c0t5d0
# vgextend vg00 /dev/dsk/c0t5d0
# for N in 1 2 3 4 5 6 7 8
> lvextend -m /dev/vg00/lvol$N /dev/dsk/c0t5d0
> done
# mkboot -l /dev/rdsk/c0t5d0
# lifls ???l /dev/rdsk/c0t5d0
# mkboot -a ???hpux ???lq??? /dev/rdsk/c0t5d0
# lifcp /dev/rdsk/cXtXdX:AUTO -
# mkboot -b updatediaglif2 -p ISL -p AUTO -p HPUX -p LABEL /dev/rdsk/c0t5d0
# lvlnboot -r /dev/vg00/lvol3
# lvlnboot -b /dev/vg00/lvol1
# lvlnboot -s /dev/vg00/lvol2
# lvlnboot -d /dev/vg00/lvol2
# setboot ???a 1/0/0.5.0

Output of lnlnboot -v

# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t4d0 (1/0/0.4.0) -- Boot Disk
/dev/dsk/c0t5d0 (1/0/0.5.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c0t4d0
/dev/dsk/c0t5d0
Root: lvol3 on: /dev/dsk/c0t4d0
/dev/dsk/c0t5d0
Swap: lvol2 on: /dev/dsk/c0t4d0
/dev/dsk/c0t5d0
Dump: lvol2 on: /dev/dsk/c0t4d0, 0

Output of setboot

# setboot
Primary bootpath : 1/0/0.4.0
Alternate bootpath : 1/0/0.5.0

Autoboot is ON (enabled)
Autosearch is ON (enabled)

What am I missing?

Re: V class not booting from alt path

Steven E. Protter — Tue, 22 Jul 2003 11:19:34 GMT

Your procedure looks great.

Compare it to the one in this post and see if anything is missing(I don't think so).

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x15541012aa92d5118ff10090279cd0f9,00.html

Go over your steps again and look for an error message during the process, probably a one liner that might indicate something failed along the way.

SEP

Re: V class not booting from alt path

Pete Randall — Tue, 22 Jul 2003 11:23:53 GMT

There are some sequence differences, some extra parameters, and some extra commands between your steps and my "cookbook":

pvcreate -B /dev/rdsk/c0t5d0
vgextend /dev/vg00 /dev/dsk/c0t5d0
mkboot /dev/rdsk/c0t5d0
mkboot -a "hpux -lq" /dev/rdsk/c0t5d0
mkboot -a "hpux -lq" /dev/rdsk/primary_boot_disk
lvexntend(s)
setboot -a 1/0/0.5.0

Pete

Re: V class not booting from alt path

Massimo Bianchi — Tue, 22 Jul 2003 11:54:23 GMT

Hi,
i remember of an old bug, where the alternate path was not correctly seen by the auto-search, even < bo alt > did it wrong, and could not see the proper disk.

Try booting with the proper hw path.

bo 1/0/0.5.0

Massimo

Re: V class not booting from alt path

Jeff Schussele — Tue, 22 Jul 2003 11:57:06 GMT

Hi Ruan,

Not positive, but the order of your commands could be the problem.
I do the mkboot & lifcp commands *before* I lvextend all the LVs. I also use double quotes on the hpux command in the mkboot -a command. That always works for me.

Also I have a question - Why are you mirroring on the same controller. It will be a SPOF for the vg00 VG. I'd recommend you mirror to a disk on another HBA for true redundancy.

HTH,
Jeff

Re: V class not booting from alt path

RAC_1 — Tue, 22 Jul 2003 12:05:44 GMT

not very sure, does it show all details when lifls -l "device name of alternate boot path" excuted.

Also in PDC does it show the alternate boot path when

sea ipl is executed?

You can also try lvlnboot -R and check.

Re: V class not booting from alt path

Ruan_3 — Tue, 22 Jul 2003 12:08:01 GMT

Thanks for all your responses.

I will try the commands in a different order.
The strange thing is that when you do a "ls 1/0/0.5.0" after one has interrupted the boot process, it comes up with an error "Missing LIF header". But when you do a "lifls -l /dev/dsk/c0t5d0" at the normal command prompt I get results returned.

Re: V class not booting from alt path

Ruan_3 — Tue, 22 Jul 2003 12:26:01 GMT

Unfortunately there is only one HBA available to this server.

lifls output

# lifls -l /dev/dsk/c0t5d0
volume c0t5d0 data size 7984 directory size 8 01/08/20 05:17:13
filename type start size implement created
===============================================================
ODE -12960 584 848 0 03/01/07 10:12:05
MAPFILE -12277 1432 128 0 03/01/07 10:12:05
SYSLIB -12280 1560 353 0 03/01/07 10:12:05
CONFIGDATA -12278 1920 244 0 03/01/07 10:12:05
SLMOD2 -12276 2168 141 0 03/01/07 10:12:05
SLDEV2 -12276 2312 136 0 03/01/07 10:12:05
SLDRV2 -12276 2448 205 0 03/01/07 10:12:05
SLSCSI2 -12276 2656 131 0 03/01/07 10:12:05
MAPPER2 -12279 2792 142 0 03/01/07 10:12:05
IOTEST2 -12279 2936 412 0 03/01/07 10:12:05
PERFVER2 -12279 3352 124 0 03/01/07 10:12:05
PVCU -12801 3480 64 0 03/01/07 10:12:05
SSINFO -12286 3544 2 0 03/01/07 10:12:05
ISL -12800 3552 306 0 02/05/10 16:25:44
AUTO -12289 3864 1 0 02/05/10 16:25:44
HPUX -12928 3872 848 0 02/05/10 16:25:44
LABEL BIN 4720 8 0 03/07/22 13:27:56

Re: V class not booting from alt path

Tim D Fulford — Tue, 22 Jul 2003 14:58:17 GMT

There was a bug on HP-UX 11.0 and V-classes that meant the alternate path did not work properly. I thought there was a patch for thus thus should not be in 11i!!!

Add your alternate boot disk to /stand/bootconf (just copy the existing line & edit accordingly)

I use updatediaglif & not updatediaglif2, but this is wibble reqally as it does not touch HPUX && you missed out PAD

# mkboot -b updatediaglif -p ISL -p AUTO -p HPUX -p LABEL -p PAD /dev/rdsk/c0t5d0

Can you boot from alternate when you do a boot from PDC... e.g.
bo 1/0/0.5.0

My 0.02??? worth...Regards

Tim

Re: V class not booting from alt path

Ruan_3 — Wed, 23 Jul 2003 07:20:26 GMT

Thanks for all the help!

I edit /stand/bootconf and added the second drive. I also did a "setboot -a 1/0/0.5.0". Rebooted the server, but "sea" still only yields the primary harddrive and "bo alt" and "bo 1/0/0.5.0" still yields LIF header missing/not a LIF volume.

Any other suggestions guys?

Re: V class not booting from alt path

Bernhard Mueller — Wed, 23 Jul 2003 09:12:44 GMT

I'd suggest using rmboot on the alternate boot disk and then redo the all the mkboot steps, just to give it a try. In what you did I cannot find an error, which would imply to use lvreduce, vgreduce, and then restart from scratch with at pvcreate -f -B ....

Regards,
Bernhard

Re: V class not booting from alt path

Bernhard Mueller — Wed, 23 Jul 2003 09:16:41 GMT

If you retry, I would omit the ODE stuff (updatediaglif2), to make sure that's not screwing up something, actually you do not need it to have a bootable mirror disk.

Regards,
Bernhard

Re: V class not booting from alt path

Ruan_3 — Wed, 23 Jul 2003 10:19:13 GMT

Thanks Bernhard!!

I did the rmboot and redid the mkboot commands and was able to bo alt ipl!! Should one always use rmboot before mkboot commands when mirroring a disk?

Thanks again everybody!

Re: V class not booting from alt path

Bernhard Mueller — Thu, 24 Jul 2003 10:42:10 GMT

Hi,

regarding your latest question, I have mirrored quite a few boot disks and so far I have never had to use rmboot....

However, whatever you want to do with "used" equipment, it is always a good idea to cleanup the arena as far as possible.

Regards,
Bernhard