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How to change mirrored root disk

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cocomo
Occasional Contributor

How to change mirrored root disk

Alpha ES40(OSF 4.0f) internal mirrored root-disk failed.
how to chang?

5 REPLIES
Ralf Puchner
Honored Contributor
Solution

Re: How to change mirrored root disk

How to replace a failed LSM mirrored system disk :

Solution :

1.) List the LSM configuration
# volprint -Aht

1.) Disassociate ALL plexes linked to the failed disk
e.g.
assume disk rz2 failed
# volplex -o rm dis rootvol-02
# volplex -o rm dis swapvol-02
# volplex -o rm dis usrvol-02
...

2.) Remove the failed disks from the disk group
# voldg -k rmdisk rz2a rz2b rz2g
# voldisk rm rz2a rz2b rz2g

3.) now physically replace the disk rz2

4.) Write a disklabel onto the new disk (e.g. for a rz28 disk type)
# disklabel -rw rz2 rz28

5.) Add the disk to LSM again
# voldiskadd rz2

6.) Mirror the system disk again
# volrootmir -a rz2
Help() { FirstReadManual(urgently); Go_to_it;; }
cocomo
Occasional Contributor

Re: How to change mirrored root disk

How to do with mylex controller?
Ralf Puchner
Honored Contributor

Re: How to change mirrored root disk

so must use the controller specific tool (e.g. RCU depend on the mylex modell) to reconfigure the raidset. Have a look into your manual of the controller howto run the controller tool and how to replace a drive.
Help() { FirstReadManual(urgently); Go_to_it;; }
vofsky
Frequent Advisor

Re: How to change mirrored root disk

Hi Ralf,
Could you give me a hand?I can not exec volsetup command after I loaded os.version of tru64 is 5.1b and I have enter the license lsm_oa.and also I can not exec vloprint,voldiskadm...any advice is appreciated!
Michael Schulte zur Sur
Honored Contributor

Re: How to change mirrored root disk

Hi vofsky,

it would be better, if you opened a new thread with your problem. You not only get better attention, you will be also able to honor answers that helped you by awarding points.

greetings,

Michael