Re: Replacing rootvg mirror disk

LoL. Karen already has a procedure that will remove all mirrored lvs
from the drive. Robert included clearing the boot record and remaking
the boot list. I added the removal of unmirrored lv's and alternate
dump spaces. Are you concerned she's going to pull a drive out of an
"ESS"?

John T. Mills

-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@xxxxxxxxxxxxx] On Behalf Of
JOSEPH KREMBLAS
Sent: Friday, January 18, 2008 7:24 PM
To: aix-l@xxxxxxxxxxxxx
Subject: Re: Replacing rootvg mirror disk
Importance: High

No . .. no . . . and no! Yikes! There is not enough pertinent
information to help Karen.

What kind of disk subsystem are we talking about? If this was already
communicated in a recent "post," then I want to know.

The answers on this post are "wanting."

Please be careful, everyone . . . including Karen!



Best wishes,


Joseph Kremblas
E-mail: AIXGURU@xxxxxxxxxxxxxxxxx
IBM Certified Advanced Technical Expert - RS/6000 (pSeries) AIX
IBM Certified Specialist - RS/6000 SP AND PSSP 3.1
IBM Certified Specialist - pSeries AIX Systems Support
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IBM Certificate of Proficiency - AIX Communications
IBM Certificate of Proficiency - AIX Installation, Backup and System
Recovery
IBM Certificate of Proficiency - AIX Problem Determination
IBM Certificate of Proficiency - AIX Performance and Systems Tuning
IBM Certified Specialist - RS/6000 AIX 4.1 Systems Support
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IBM Certified Specialist - MQSeries
Phone: (919) 423-6407
Fax: (919) 321-2618

-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@xxxxxxxxxxxxx]On Behalf Of
Mills, John T
Sent: Thursday, January 17, 2008 09:57
To: aix-l@xxxxxxxxxxxxx
Subject: Re: Replacing rootvg mirror disk


Check for unmirrored lv's like dumpspaces after unmirrorvg:
lspv -l hdisk1

Unhook dumpspaces:
Config:
Sysdumpdev -l
Primary:
sysdumpdev -P -p /dev/sysdumpnull
Secondary:
sysdumpdev -P -s /dev/sysdumpnull

Recreate:
mklv -t sysdump -c 1 -y lg_dumplv 24 hdisk1
Primary:
sysdumpdev -P -p /dev/lg_dumplv
Secondary:
sysdumpdev -P -s /dev/lg_dumplv

John T Mills




From: IBM AIX Discussion List [mailto:aix-l@xxxxxxxxxxxxx] On Behalf Of
Robert Miller
Sent: Wednesday, January 16, 2008 3:57 PM
To: aix-l@xxxxxxxxxxxxx
Subject: Re: Replacing rootvg mirror disk


The command you're looking for is "rmdev -dl hdisk1". Aside from that,
you'll want to make sure it's in the bootlist and quorum is disabled so
it'll boot if it only has one good disk:

chvg -Qn rootvg
bosboot -ad hdisk1
bootlist -m normal hdisk0 hdisk1 (or cd0 hdisk0 hdisk1, or cd0 hdisk0
hdisk1 en0, or whatever you're using)
bootlist -m normal -o (will display the current bootlist)

You will probably want to go into 'diag' and verify you've got the right
disk by going into the SCSI hot swap manager (it's called something like
that) and doing an identify on hdisk1.

Other, more experienced voices on the list may also have suggestions
about dump devices and whatnot, personally I haven't fiddled with any of
that.

--rm




From: IBM AIX Discussion List [mailto:aix-l@xxxxxxxxxxxxx] On Behalf Of
Karen K Boddy
Sent: Wednesday, January 16, 2008 1:04 PM
To: aix-l@xxxxxxxxxxxxx
Subject: Replacing rootvg mirror disk


I've only done this once before and it was quite a bit different
situation.

hisk0 [rootvg] is mirrored to hdisk1. hdisk1 needs to be replaced.
Running AIX 5300-06-04. Is this sequence of commands corrrect?

unmirror rootvg hdisk1
reducevg rootvg hdisk1
I only know how to do this next step through smit:
Remove Disk from Operating System-Remove Disk without Data-select
appropriate disk and remove.

cfgmgr -v
Replace drive
cfgmgr -v
mirror -m rootvg hdisk1

I know I'm probably missing something and appreciate any input/advice.
Thank you,
Karen Boddy
Capital City Libraries


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