vg00 Remove Stripping

[Ralph Rye_1]

I inherited some 11i systems that have certain lv's in vg00 that are striped for some reason. I would like to convert them to be mirrored across the two internal disks. I believe the only good way I have to do this is to make a ignite tape and lay the O.S. back down in a non-stripe config and then mirror the disks.

Any other way of doing this online?

In a VXVM config I would just add the mirror plex and then remove the stripe plex, but of course I don't have that luxary.

Thanks,
Ralph

[Geoff Wild]

That is correct - you will have to re-create the volume group.

Rgds...Geoff

[Stf]

Yes you're right, there is not other way...

Stf ;-)

[Tim D Fulford]

Ignite is probably the best, but you could re-build the system from the gropund up... harder, but then you get to really do what you feel need, no compromises.

You might be able to do it on-line by mirroring the striped LV, deleting the original, then re-mirroring (it depends on how the LV was striped, if it was kB then thee is no way you can do this). You will also need enough dsk space and the LV's to be changed must NOT be lvol1,2 or 3.

Regards

Tim

[Sanjay_6]

Hi Ralph,

I'm hoping we are talking about vg00 and that you just have a few lv's in vg00 that are striped. why don't you back up the data on those lv's and recreate them without the stripe.

If app/programs using this lv can be shutdown, shutdown those apps / programs\, back the data on these lv's, remove the lv's using lvremove and then recreate them without the striping. That is all there is. There is no need to do the ignite and all that stuff if it is not neccessary.

Not all lv's are created stipe in vg00. primarily the system lv are non-striped, so you should not have to do a ignite backup and reinstall the OS.

Hope this helps.

Regds

[Paul Torp · Accepted solution]

and..

"send persons that stripe vg00 to jail..."

Ignite tape...

make_tape_recovery -vA

boot on it.. and there you go..

[Ralph Rye_1]

Thanks everyone for your answers.

I will be going down the ignite route.

Also I agree with the statement about admins striping on vg00 should go to jail.

The real kicker of these systems is that they are members of Service Guard cluster, but the previous admin for some reason decided he didn't want to mirror the O.S. disks to give the nodes good availability, but instead striped a bunch of the vg00 volumes.

Well it's time to go do some change mangement paperwork.

Thanks,
Ralph