[SunHELP] root disk transition from veritas to disksuite

[sunhelp at sunhelp.org]

Well I dont know when it changed, but the 2gb swap size isn't an issue in
Solaris 8 anymore.  The disk label I sent out had 199 cylinders free at the
end
of the disk so I used that area instead.  I put two metadb's on the same
disk
and another on the second (mirror) disk the satify this 3 metadb
requirement.
Sure, "Ideally" we'd want these metadb's across three different disks which
incorporated three different controllers, but that isn't an option in this
scenerio =).   Thanks for you assistance Andrew.

-----Original Message-----
From: adh at an.bradford.ma.us [mailto:adh at an.bradford.ma.us]
Sent: Monday, July 28, 2003 3:54 PM
To: sunhelp at sunhelp.org
Subject: Re: [SunHELP] root disk transition from veritas to disksuite


"From: "Markham, Richard" <RMarkham at hafeleamericas.com>
"
"I have an existing disk which had been part of a veritas vm root mirror,
but
"I've broken the mirror and unencapsulated it.  Going forward I want to
create
"a Disksuite mirror and need to make slice 3 and 4 able to be used for
metadb
"replicas.  Long story short... Can I reduce slice 1 (SWAP) by 10mb and then
map
"slice 3 and 4 to use 5mb a peice of these newly freed cylinders, then label
"the disk, and not expect to have any trouble?  Would single user mode
suffice
"or perhaps I should boot off the cdrom?  Thanks for any tips.

you can certainly repartition the disk to free up a cylinder for the
metadb, but don't put anything in there until -after- the reboot!  and
you don't need two mdb slices on one disk, though you need -three-
copies of the db to boot unattended - afaik.  i have just one
one-cylinder slice on each disk, and created the db thusly:

metadb -a -f	-c 3 -l 444	c0t0d0s3 c0t1d0s3

[s2.6, sds4.1]

that just fills the cylinder, and as i have only the mirrored root
slice in there, 444 blocks is still plenty big.

rereading the man pg, i see that i might've gotten away with
-c 2 -l 666
but i didn't have to try.  or perhaps it doesn't matter how many you
have if half of them are on the failed disk.

btw, i see that you have a 4G swap.  iirc solaris has/had a swap limit
of 2G/(slice|file) -- was that changed in s9?
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought
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