Re: Sun Cluster 3.0 - Rearranging disks

From: Nick Havard (nick_at_nickhavardxyz.com)
Date: 12/23/03 

Date: Tue, 23 Dec 2003 20:24:03 -0000

"Phil Izor" <pizor@lexis-nexis.com> wrote in message
news:bsa0qf$qg0$1@mailgate2.lexis-nexis.com...
> In article <sIZFb.18$v64.82120@newsfep2-gui.server.ntli.net>, "Nick
Havard" <nick@nickhavardxyz.com> writes:
> >Hi
> >
> >Due to a number of problems with my SVM disk groups, I am thinking about
> >rebuilding them. Could you please let me know if I can do the following.
> >Assume the data will be backed up, so it doesn't matter if I lose the
> >data/partitions etc.
> >
> >The system is a small two node Sun Cluster 3.0 system, where only the
shared
> >disks are under the control of SVM (i.e. /, /opt, /tmp, /var etc are all
> >/dev/dsk devices, an not /dev/md devices).
> >
> >To wipe out all disk groups etc, is the easiest way is to delete the
> >metadatabases on each node?
> >metadb -f -d <metadb device>
> >
> >Will this remove all my configured disk groups etc. I have one that I am
not
> >able to take control of and subsequently can't delete. Presumably this
will
> >get rid of it once and for all.
>
> I don't use SVM much, but I'd venture to say that you might not want to
destroy everything just
> to fix a disk group. There should be other avenues investigated. With
Veritas, you wouldn't have as much of a problem but I understand that
doesn't help you.
> >
> >My cluster has two Sun 711 Multipacks for shared storage. If I moved the
> >disks around in each pack, and between packs will Cluster 3.0 be able to
> >remap all the disks etc, back to the same did device number, if not what
do
> >I need to do t get SC3 to rebuild the did list. I wish to do this becuase
> >the disks are all over the place in the disk arrays as I've bought the
and
> >expanded the capacity over several months. Essentially I want to put
things
> >in to a reasonable order etc.
>
> scdidadm -C is good to rebuild the did list
>
> >
> >Then I can rebuild the necessary meta databases using metadb on each
node,
> >and the groups as appropriate etc, and put back the data to each device?
> >
> >Are there any big risks to my cluster in doing the above, that I am
> >overlooking.
> >--
> >Thanks for your help.
> >
> >Nick
> >nick@nickhavardxyz.com
> >
> >P.S. Remove xyz to reply
> >
> >
> >
>
>
>
> --
> '96 Bird T-Tops 3.8L 5-speed...love those gears
>
>
Hi

Thanks for replying. I know rebuilding the disksets is overkill, but I have
issues creating new disksets, and have another that is just unmanagable. If
you can answer the issues in these two links it would be useful. They are
both newsgroup posts over the last couple of days.

http://groups.google.com/groups?dq=&hl=en&lr=&ie=UTF-8&oe=UTF-8&group=comp.sys.sun.admin&selm=KInFb.25626%24R6.5161546%40newsfep2-win.server.ntli.net

http://groups.google.com/groups?dq=&hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=kQnFb.25685%24R6.5160782%40newsfep2-win.server.ntli.net&prev=/groups%3Fq%3Dcomp.sys.sun.admin%26ie%3DUTF-8%26oe%3DUTF-8%26hl%3Den

Thanks for taking the time to respond. 

-- 
Regards
Nick
nick@nickhavardxyz.com
P.S. Remove xyz to reply