How to get the boot string in HP-UX 11.23 ?

[Jdamian]

Hi

For HP-UX 11.00 and 11.11 I used run the following command to locate the boot disk and kernel path:

echo "boot_string/S" | adb -k /stand/vmunix /dev/kmem

But "boot_string/S" doesn't seem to be a valid command for adb in HP-UX 11.23

Do you know the right way to get that ?

Thanx in advance

[James R. Ferguson · Accepted solution]

Hi:

'adb' has undergone some changes in 11.23. You can get backward compatability with '-o':

# echo 'boot_string/S' | adb -o /stand/vmunix /dev/mem

See the manpages for 'adb':

http://docs.hp.com/en/B2355-60105/adb.1.html

Regards!

...JRF...

[Lolupee]

# efi_cp -d /dev/rdsk/ -u /EFI/HPUX/AUTO /tmp/AUTO.boot

# cat /tmp/AUTO.boot

The command would extract the boot string from /EFI/HPUX/AUTO in readable format and apend it in /tmp/AUTO.boot file for you to browse.

[Geoff Wild]

How about:

lvlnboot -v

Rgds...Geoff

[Sandman!]

Oscar,

Try the following...

# echo 'boot_string/S' | adb -o /stand/vmunix /dev/mem

cheers!

[Jdamian]

Hi

The following lines are the output of command line in HP-UX 11.11

# echo boot_string/S | adb /stand/vmunix /dev/kmem
boot_string:
boot_string: disk(0/0/1/1.2.0.0.0.0.0;0)/stand/vmunix

but in HP-UX 11.23, it displays:

boot_string:
(;)/stand/vmunix


No info about device type and hardware path is shown.

On the other hand, boot process logs the boot device in syslog:

vmunix: Boot device's HP-UX HW path is: 0/1/1/0.1.0


But this info can be removed (deliberately or inadvertently). Thus I need a sure method to get that info.

My interest of this issue is due that I had to recover my system from a pre-patched image (splitted mirror volumes) because kernel recompilation failed in a patch installation.
That failed kernel recompilation was due that kernel image resided in the splitted LVOL1, i.e., system booted from alternate path (I didn't know this detail) then splitted mirrors (kernel image was) and tried to install patches (--> recompile kernel).

[Geoff Wild]

Just want to clear one thing - are you running 11.23 on ia64 or parisc?

On parisc with 11.23 I get:

# echo boot_string/S | adb /stand/vmunix /dev/kmem
boot_string:
boot_string:
disk(0/1/1/0.0.0.0.0.0.0;0)/stand/vmunix


On ia64:

# echo boot_string/S | adb -o /stand/vmunix /dev/kmem
boot_string:
boot_string:
(;)/stand/vmunix


# lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c3t2d0s2 (0/1/1/1.2.0) -- Boot Disk
/dev/dsk/c2t1d0s2 (0/1/1/0.1.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c3t2d0s2
/dev/dsk/c2t1d0s2
Root: lvol3 on: /dev/dsk/c3t2d0s2
/dev/dsk/c2t1d0s2
Swap: lvol2 on: /dev/dsk/c3t2d0s2
/dev/dsk/c2t1d0s2
Dump: lvol2 on: /dev/dsk/c3t2d0s2, 0


So, with (;)/stand/vmunix coming after the 2nd boot_string: in the adb command, I'd say my ia64 system booted off of /dev/dsk/c2t1d0s2 (0/1/1/0.1.0)

Rgds...Geoff

[Muthukumar_5]

May be you can try as,

awk '{ print $2 }' /stand/bootconf | xargs ioscan | tail -1 | awk '{ print $1 }'

It will give that disk string.

--
Muthu

[Geoff Wild]

Muthu - nope - as bootconf contains both disks:

# cat /stand/bootconf
l /dev/dsk/c3t2d0s2
2 /dev/dsk/c2t1d0s2


Rgds...Geoff

[Muthukumar_5]

File /stand/bootconf is having boot disk information. You can use that to get boot string information with ioscan H/W Path.

Try to change the format of adb. May give informations. 11.23 and 11.11 will differ on adb usage.

--
Muthu