topic Re: Create a volume in Operating System - HP-UX

Create a volume

Marcelo Fco. Pereira Jr — Fri, 25 May 2007 00:21:30 GMT

Hi Guys, i need a little help from you!!!

I have a VG whih 4 disk. It`s possible to I create a volume pointing to one disk??? I need to create 4 volumes for Oracle ( System, Index, Datafiles and Redo ) and don`t want to have risk of I/O concorrent.

Tks

Re: Create a volume

Marcelo Fco. Pereira Jr — Fri, 25 May 2007 00:22:49 GMT

Really I need to create one volume in one disk of the VG.

Re: Create a volume

Marcelo Fco. Pereira Jr — Fri, 25 May 2007 00:39:00 GMT

Like this:

/dev/vgoracle
/dev/dsk/c15t0d0
/dev/dsk/c15t0d1
/dev/dsk/c15t0d2
/dev/dsk/c15t0d3

I need to create four volumes:

/dev/vgoracle/redo in c15t0d0
/dev/vgoracle/system in c15t0d1
/dev/vgoracle/undo in c15t0d2
/dev/vgoracle/temp in c15t0d3

Tks

Re: Create a volume

freddy_21 — Fri, 25 May 2007 01:37:03 GMT

Hello Marcelo,

I have suggestion for you. why you not create 4 volume group, each volume group have 1 disk and 1 lvol. it's more easier.

thanks
freddy

Re: Create a volume

Hemmetter — Fri, 25 May 2007 01:46:08 GMT

Hi Marcelo

Using LVM:

$ lvcreate -n redo vgoracle
$ lvextend -l 1000 /dev/vgoracle/redo c15t0d0

means first create size zero lvol.
Second extend it on the disk in question.

rgds
HGH

Re: Create a volume

freddy_21 — Fri, 25 May 2007 01:58:57 GMT

hmm nice trick, Hemmetter. I already tried. I dont know about that trick.

Thanks
Freddy

Re: Create a volume

Vivek_Pendse — Wed, 30 May 2007 00:35:49 GMT

YOu can create four different lvols for four filesystems. in present situation u will need to export the vg & recreate with one disk.
Thanks,
Vivek