mirror and /stand/bootconf

[Sirius Black]

Hi all,I've mirrored my boot disk and now I want to know if I've, and how, to put a second entry in the /stand/bootconf with the path of mirrored boot disk.So my first disk is: /dev/dsk/c0t6d0 and mirror disk is /dev/dsk/c3t6d0.In my bootconf file I've this entry :1 /dev/dsk/c0t6d0I've to put a second entry like this ?1 /dev/dsk/c3t6d0Thanks Fabrizio

[Steven E. Protter]

A complete procedure to make sure you got it all.

pvcreate -B /dev/rdsk/c1t0d0 #use real disk

mkboot -l /dev/rdsk/c1t0d0
mkboot -a "hpux -lq (;0)/stand/vmunix" /dev/rdsk/c1t0d0 # use real disk


# mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p AUTO -p HPUX -p PAD -p LABEL /dev/rdsk/c?t?d?

If you are running 64-bit OS:

# mkboot -b /usr/sbin/diag/lif/updatediaglif2 -p ISL -p AUTO -p HPUX -p PAD -p LABEL /dev/rdsk/c?t?d?


vgextend /dev/vg00 /dev/dsk/c1t0d0 # same thing
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c1t0d0

# real disk. repeat for other lvols

lvlnboot -r /dev/vg00/lvol3 # root fs /
lvlnboot -s /dev/vg00/lvol2 #swap
lvlnboot -d /dev/vg00/lvol2 #swap/dump
lvlnboot -b /dev/vg00/lvol1
lvlnboot -R
lvlnboot -v
setboot
setboot -a 52.1.0 # second disk

SEP

[Pete Randall]

Fabrizio,

The steps to mirror you boot volume are:

1. Create a physical volume with a boot reserved area
"pvcreate -B /dev/rdsk/c1t6d0"

2. Add the physical volume to the root VG
"vgextend /dev/vg00 /dev/dsk/c1t6d0"

3. Use mkboot to place the boot utilities in the boot area and add the AUTO file
"mkboot /dev/rdsk/c1t6d0"
"mkboot -a "hpux -lq" /dev/rdsk/c1t6d0"

4. Use mkboot to update the AUTO file on the primary boot disk
"mkboot -a "hpux -lq" /dev/rdsk/c0t6d0"
5. Mirror the stand, root and swap logical volumes
"lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c1t6d0"
"lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c1t6d0"
"lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c1t6d0"

6. Modify your alternate boot path
"setboot -a 8/8.6.0 # use the path of your new boot disk"

That's all there is to it.


Pete

Repeat the lvextend for all other LVs

[Pete Randall]

You may notice that I left out any lvlnboot commands. That is because they are not necessary - see the man page:

"This command should be run in recovery mode (-R) whenever the configuration of the root volume group is affected by one of the following commands: lvextend, lvmerge, lvreduce, lvsplit, pvmove, lvremove, vgextend, or vgreduce (see lvextend(1M), lvmerge(1M), lvreduce(1M), lvsplit(1M), pvmove(1M), lvremove(1M), vgextend(1M), and vgreduce(1M)). Starting with HP-UX Release 10.0, this is done automatically."


Pete

[Sirius Black]

But if you look at your /stand/bootconfwhat do you see ??Thanks Fabrizio

[Pete Randall]

Just the primary.


Pete

[Pete Randall]

From the man page:

"It is used by the Software Distributor and HP-UX kernel control scripts (fileset OS-Core.KERN-RUN) to determine how and where to update the initial boot loader."

I see no reason to update it.


Pete

[Dietmar Konermann · Accepted solution]

Pete,

the reason why the lvlnboot commands are listed in most cookbooks (including the Software Recovery Handbook) is the fact that "lvlnboot -R" may fail under some circumstances for older LVM patch levels.

Fabrizio,

the /stand/bootconf file should include the mirror boot disk also. See man page of bootconf(4) for reasons. The entry needs to be done manually.

Best regards...
Dietmar.

[Dietmar Konermann]

Quoting man page bootconf(4):

---
If LVM mirrors are used, then each of the "mirrors" must have its own line.
---

For me this sounds like a very clear statement.

[Pete Randall]

Thanks for the clarification, Dietmar. I didn't read far enough in the man page, I guess.


Pete