SVM mirror question

cnurb

unread,

Dec 17, 2009, 1:52:58 PM12/17/09

to

Running Solaris 10, the root disk has the following vtoc.

Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 29996 62.48GB (29997/0/0)
131026896
1 swap wu 29997 - 35668 11.81GB (5672/0/0)
24775296
2 backup wm 0 - 65532 136.49GB (65533/0/0)
286248144
3 unassigned wm 0 0
(0/0/0) 0
4 unassigned wm 0 0
(0/0/0) 0
5 var wm 35669 - 40470 10.00GB (4802/0/0)
20975136
6 unassigned wm 40471 - 50073 20.00GB (9603/0/0)
41945904
7 unassigned wm 50074 - 59676 20.00GB (9603/0/0)
41945904

I forgot to leave space for slices 3 and 4 to hold metadb data.
Could I use cylinders after 59676 to assign to slices
3 and 4 ? In other words, the slice numbers don't have to coincide
with the order of cylinder assignment, do they?

Then, as long as I partition the second disk with the same vtoc,
I should be ok to mirror, correct ?

Thanks,
Carl

Chris Ridd

unread,

Dec 17, 2009, 2:20:31 PM12/17/09

to

Consider using ZFS root instead?

--
Chris

hume.sp...@bofh.ca

unread,

Dec 17, 2009, 2:54:57 PM12/17/09

to

cnurb <cnu...@yahoo.com> wrote:
> 3 and 4 ? In other words, the slice numbers don't have to coincide
> with the order of cylinder assignment, do they?

Correct. Your slice 1 is an example of that.

> Then, as long as I partition the second disk with the same vtoc,
> I should be ok to mirror, correct ?

Right.

--
Brandon Hume - hume -> BOFH.Ca, http://WWW.BOFH.Ca/

chuckers

unread,

Dec 17, 2009, 7:00:35 PM12/17/09

to

On Dec 18, 3:52 am, cnurb <cnu...@yahoo.com> wrote:
> Running Solaris 10, the root disk has the following vtoc.

[edit]

> I forgot to leave space for slices 3 and 4 to hold metadb data.
> Could I use cylinders after 59676 to assign to slices
> 3 and 4 ? In other words, the slice numbers don't have to coincide
> with the order of cylinder assignment, do they?
>

As stated, that is correct. However, are you implying you need 2
slices SVM? 1 should be sufficient. Just make it large enough (20 MB
is more than enough)

Diego

unread,

Dec 23, 2009, 6:20:46 AM12/23/09

to

> I forgot to leave space for slices 3 and 4 to hold metadb data.
> Could I use cylinders after 59676 to assign to slices
> 3 and 4 ? In other words, the slice numbers don't have to coincide
> with the order of cylinder assignment, do they?

SVM needs only 1 slice for the metadb, while Veritas need the slice 3
and 4 for the private and public region. Just make your slice where
you want and have a nice day :)

Diego.