topic Re: Slow boot after mirroring in Operating System - HP-UX

Slow boot after mirroring

Luigi Berengan — Wed, 14 Apr 2004 04:15:01 GMT

Hi,
I mirrored the system (vg00) to another disk.
when I try to boot from the new disk,
the console print :

HARD Booted.

ISL Revision A.00.43 APR 12, 2000

ISL booting hpux

Boot
: disk(0/12/0/0.6.16.0.0.1.3;0)/stand/vmunix

and then the system sleep 10 minutes.

After boot right.

Could you tell me why ?

Thank you very much

Luigi

Re: Slow boot after mirroring

G. Vrijhoeven — Wed, 14 Apr 2004 04:17:44 GMT

Hi Luigi,

At this point the server loads the kernel and scans the hardware. Dit you add hardware, ore do you have failing hardware?

HTH,

Gideon

Re: Slow boot after mirroring

Michael Tully — Wed, 14 Apr 2004 04:19:52 GMT

This did boot successfully right?
Please advise exact mirroring procedures.
Have the latest patches for mirror/UX installed, and what HPUX version you have.

Re: Slow boot after mirroring

Sanjiv Sharma_1 — Wed, 14 Apr 2004 04:20:27 GMT

Hi Luigi,

All the hpux Servers (with or w/o root disk mirror) sleeps for 5 to 10 minutes after
Boot
: disk(0/12/0/0.6.16.0.0.1.3;0)/stand/vmunix

Than boots.

Do you find any difference between the booting time before and after mirror?

There should not be much difference.

Re: Slow boot after mirroring

KapilRaj — Wed, 14 Apr 2004 04:26:58 GMT

I will be interested to see lvlnboot -v o/p here Could you please post it

Kaps

Re: Slow boot after mirroring

Michael Tully — Wed, 14 Apr 2004 04:27:01 GMT

What type of system is this (model) ?
What disk are you attempting to boot from ?
Internal or SAN based? By the hardware path it suggests it is not internal ...

Re: Slow boot after mirroring

Luigi Berengan — Wed, 14 Apr 2004 04:30:03 GMT

Hi,
1) I haven't falling hardware
2) The hpux is 11i with the following patch bundle :
GOLDAPPS11i B.11.11.0312.4 Gold Applications Patches for HP-UX 11i v1, December 2003
GOLDBASE11i B.11.11.0312.4 Gold Base Patches for HP-UX 11i v1, December 2003

3)During the boot from the primary path the system sleep only 1 minute.

Re: Slow boot after mirroring

Michael Tully — Wed, 14 Apr 2004 04:35:02 GMT

During this one minute, the kernel loads into memory. Are you saying this is longer than the primary boot path timing. I would say that loading a kernel (Boot
: disk(0/12/0/0.6.16.0.0.1.3;0)/stand/vmunix) in one minute is not too bad :^)

Re: Slow boot after mirroring

Luigi Berengan — Wed, 14 Apr 2004 04:46:40 GMT

Hi,
1) I am booting from SAN (EMC Symmetrix)
2) The boot is slow only from the alternate path (mirrored disk - 0/12/0/0.6.16.0.0.1.3)
3) The output fron lvlnboot -v is :

root@hprp01 /> lvlnboot -v
Current path "/dev/dsk/c4t1d3" is an alternate link, skip.
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c6t1d3 (0/12/0/0.6.16.0.0.1.3) -- Boot Disk
/dev/dsk/c4t1d3 (0/10/0/0.5.16.0.0.1.3) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c6t1d3
/dev/dsk/c4t1d3
Root: lvol3 on: /dev/dsk/c6t1d3
/dev/dsk/c4t1d3
Swap: lvol2 on: /dev/dsk/c6t1d3
/dev/dsk/c4t1d3
Dump: lvol2 on: /dev/dsk/c6t1d3, 0

Current path "/dev/dsk/c6t1d4" is an alternate link, skip.

Re: Slow boot after mirroring

Luigi Berengan — Wed, 14 Apr 2004 05:08:08 GMT

Hi,

Nobody answare me ?

Luigi