Asim

 

Diskgroup deports are usually fairly quick - we just need to check all
the volumes are closed, they don't actually need to be stopped and
update the sequence number on the diskgroup config enabled disks in the
$DG - nothing more really and of course run a vxdg list to ensure that
the $DG is deported for the VCS DiskGroup agent perspective. Not much
time at all is required.

 

Now - can I ask if there was a recent upgrade to 5.0MP3 ?  The most
usual thing we see in Support is that when Agents don't behave as
expected - and especially after an upgrade is that people forget to
install the correct version types.cf for VCS ( Step 9 in the upgrade
process) .  More common with agents just don't doing what is expected -
arguments for the Agent binaries change - the respective agents ArgList
order may and often does change between versions. Commonly the
operations we see go strange are in Diskgroup resources - since these
are typically at the bottom of the resource hierarchy in the VCS service
group - and are run first. And also we do some things in the binary for
this one in this release - like panic on DG loss function. This is new
so the DiskGroup Agent changed.

 

# diff /etc/VRTSvcs/conf/types.cf /etc/VRTSvcs/conf/config/types.cf

If there is adifference

# hastop -all -force

# cp /etc/VRTSvcs/conf/config/types.cf
/etc/VRTSvcs/conf/config/types.cf.oldversion

Repeat the following two steps on all nodes ( yes I know there is meant
to be a cf snapshot to the joining VCS node when it starts - but I am
basically an untrusting person )

# cp /etc/VRTSvcs/conf/types.cf /etc/VRTSvcs/conf/config/types.cf

# hastart

 

Stuart

________________________________

From: veritas-vx-boun...@mailman.eng.auburn.edu
[mailto:veritas-vx-boun...@mailman.eng.auburn.edu] On Behalf Of William
Havey
Sent: Friday, 19 March 2010 2:17 AM
To: asim.zuberi.1...@njit.edu
Cc: Veritas-vx@mailman.eng.auburn.edu
Subject: Re: [Veritas-vx] Deporting a DG via VCS

 

How many volumes in the Disk Group? More than several hundred would take
an agent a long time, such as the totally unexpected 20 minutes.

On Thu, Mar 18, 2010 at 11:11 AM, Asim Zuberi <a...@njit.edu> wrote:

Yes, the filesystems gets unmounted cleanly without much delay.

 

From: William Havey [mailto:bbha...@gmail.com] 
Sent: Thursday, March 18, 2010 10:09 AM
To: asim.zuberi.1...@njit.edu
Cc: Veritas-vx@mailman.eng.auburn.edu
Subject: Re: [Veritas-vx] Deporting a DG via VCS

 

First thought is the File System hanging. the Volume waits for its
Parents to go offline. Do they?

On Thu, Mar 18, 2010 at 11:04 AM, Asim Zuberi <a...@njit.edu> wrote:

Hello All -

 

Sorry to post a VCS question on this mailing list. I need a quick
answer:

 

When the following command is performed outside the VCS cluster:

 

vxvol -g $DG stopall

vxdg deport $DG

 

it works like a charm.

 

But when it is executed via VCS; such as failing over a SG from one node
to another:

 

hagrp -switch $SG -to node-name

 

the VOL resource hangs for about 20 minutes and then goes offline. No
errors encounters.

 

Just wondering what could be going on. The SF ver is 5.0MP3. Any
pointers will be a great help.

 

thanks!

--Asim;

 

 

 


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