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Operating System - Tru64 Unix
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Replacing failed LSM mirrored disk

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Mihails Nikitins
Super Advisor

Replacing failed LSM mirrored disk

Hi,

Does anyone have a good procedure for replacing failed LSM mirrored disk?

I found a document here, but I'm not sure that this is optimal.

http://www.ornl.gov/cts/archives/mailing-lists/tru64-unix-managers/2001/05/msg00120.html

It supposes a lot of remove commands for all partitions like:

volplex dis vol-rz16g-02
voledit -fr rm vol-rz16g-02
voldg rmdisk rz17g
voldisk rm rz17g

Is it possible to remove disk and dependent LSM data structures with less commands?

Then single volrootmirr is supposed to do everything.

volrootmir -a rz17

I think "volmirror" should be used for non-root disks, like

/usr/sbin/volmirror disk_old disk_new

Thanks and points in advance for your comments!

BR,
Mihails
KISS - Keep It Simple Stupid
4 REPLIES
Joris Denayer
Respected Contributor
Solution

Re: Replacing failed LSM mirrored disk

Hi Mihails,

For non-boot devices, have a look in chapter 6.4.5 on

http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/ARH9BDTE/TITLE.HTM

Chapter 6.4.6 gives the explanations for bootdevices.


BTW: The complete documentation sets are at http://h30097.www3.hp.com/docs/pub_page/doc_list.html

Rgrds

Joris
To err is human, but to really faul things up requires a computer
Mihails Nikitins
Super Advisor

Re: Replacing failed LSM mirrored disk

Hi Joris,

Thank you for your reply!
I run Tru64 4.0F and it's LSM Manual was not so good and straightforward. That was the problem.

I hope LSM was mostly the same in 4.0F and I can use the commands with some exceptions (e.g. hwmgr is not available on my system).

BR,
Mihails

KISS - Keep It Simple Stupid
Ralf Puchner
Honored Contributor

Re: Replacing failed LSM mirrored disk

1.) get disk access name and disk media name of the failed disk

# voldisk list
# volprint -Aht

2.) remove failed disk from lsm

# voldg -g -k rmdisk
wichtig: -k
# voldisk rm

3.) change disk

4.) write new disklabel

# disklabel -rw rzxxx

5.) init disk for lsm

# voldisksetup -i rzxxx

6.) link disk and diskgroup

# voldg -g -k adddisk =

7.) starting recovery of mirror

volrecover -g -sb

8.) additional work within ase:
# asemgr

m) Managing ASE Services -->
a) Advanced Utilities -->
r) re-reserve a service's devices (LSM only)
Help() { FirstReadManual(urgently); Go_to_it;; }
Mihails Nikitins
Super Advisor

Re: Replacing failed LSM mirrored disk

Hi,

Thanks for the replies. Procedure from v. 5.1. was OK.

In 4.0F one can use command "scu" instead of hwmgr
to detect SCSI devices.

scu scan edt all; scu show edt

BR,
Mihails
KISS - Keep It Simple Stupid