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Mirror disk failed on Alpha ds10 (Tru64 Unix)

meekrob
Super Advisor

Mirror disk failed on Alpha ds10 (Tru64 Unix)

Hello,

Can some one help me on:

1- How I can identify a failed mirror disk on DS10 ???
2- what is the method to unmirror the failed on and replaced by a new one, then mirrored again???

Thanks
8 REPLIES
Vladimir Fabecic
Honored Contributor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

We need more informations about your configuration.
What kind of mirroring are you using, hardware (RAID controller) or LSM?
What is the OS version?
In vino veritas, in VMS cluster
meekrob
Super Advisor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Thanks for your reply,

What is the method that i can used to identify the config???
Rgds
Vladimir Fabecic
Honored Contributor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Pleast post the output of
# volprint -Aht
Then we will see if you are using LSM.
Maybe the best would be the following:
Do
# sys_check > /tmp/config.html
Zip the file and post it as attachment.
In vino veritas, in VMS cluster
meekrob
Super Advisor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Hello Vladimir,

Sorry for the delay, but the sys_check command takes a long time and there was a system disk space.

Plesae find attached the requested file.
Apparantly the LSM is installed.

Please I need the method to change the LSM mirror bootable disk.

NB: based on the attached file, apprently the disk is EIDE 80GB, can you confirm, and if possible to have the disk P/N that I should ordered.

Thanks in advance
Vladimir Fabecic
Honored Contributor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Hello
Sory for delay, I was away from work and will be some time.
First, you have 40 GB disks, not 80 GB.
Part number is 3X-RE58A-BA (40-GB 7,200 rpm IDE (UDMA) disk drive).
Looks like you have problem with dsk0. To see which disk is dsk0 use this:
# dd if=/dev/rdisk/dsk0c of=/dev/null
Disk which has activity is dsk0.
Generic method how to replace bad disk is (
I will write exact commands for your case later):

1. Remove the failed disk from the disk group retaining the media
records thus

# voldg â g mydg â k rmdisk media_name

2. Remove the disk access record

# voldisk rm disk_access_name

3. Restore the disklabel

#disklabel â wr rz?? disktype
(assuming no copy of the label was saved)

#disklabel â r â R rz?? /saved_label disktype
(if the label was saved)

4. Initialise the new disk for use with LSM

# voldisksetup â i rz?? nconfig=? nlogs=? privlength=??
(assuming no copy of the label was saved)

# voldisk â f init rz?? offset=16
(if the label was saved)

5. Associate the new disk to a disk media record/disk group

# voldg â g mydg â k adddisk media_name=disk_access_name

6. Recover(synchronise) the plexes in the diskgroup

# volrecover â g mydg -sb

In vino veritas, in VMS cluster
meekrob
Super Advisor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Hello Vladimir,

I am still waiting the method, please if you can send it to me

Rgds
Vladimir Fabecic
Honored Contributor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Hello
I forgot to say that you have problem with boot disk and it requires special procedure.
You can see a method how to do it in attached file.
I hope I did not forget something. It would be good if someone else check my procedure (Michael, Johan or somebody else) since I have a headache.
But I think my procedure should work OK.
In vino veritas, in VMS cluster
Vladimir Fabecic
Honored Contributor

Re: Mirror disk failed on Alpha ds10 (Tru64 Unix)

Sorry
I forget to add "dis" in step 4.
Here is "revised" file.
In vino veritas, in VMS cluster