topic Re: create raw devices. in Operating System - HP-UX

create raw devices.

anilezfa — Thu, 07 Oct 2004 03:36:21 GMT

Could some one guide me on how to create a raw devices for a database? Thanks.

Re: create raw devices.

Sunil Sharma_1 — Thu, 07 Oct 2004 03:39:12 GMT

It's the same way you create logical volume. In this case no need to create FS on volume and /dev/vgnn/rlvolmm will be used as raw volumes fro database.

Sunil

Re: create raw devices.

Michael Tully — Thu, 07 Oct 2004 03:42:17 GMT

Informix right?

Just create a logical volume as you would normally, but do not create a filesystem on it.

e.g.
lvcreate -n myrawlv /dev/myvg
lvextend -L /dev/myvg/myrawlv

You then need to create a symbolic link somewhere to point to the device of the logical volume.

ln -s /dev/myvg/myrawlv /links/dbspace1

Re: create raw devices.

Franky_1 — Thu, 07 Oct 2004 04:00:57 GMT

Hi,

just create a LV as normally with lvcreate but don't put a FS on it

Regards

Franky

Re: create raw devices.

anilezfa — Thu, 07 Oct 2004 04:05:51 GMT

If I want :

device: /dev/myraw/
char,block name: abc,rabc

So I just run the following :

1) lvcreate -L 2048 -n abc /dev/myraw

and that's it? How can I check that it was created properly?

Re: create raw devices.

Michael Tully — Thu, 07 Oct 2004 04:10:47 GMT

lvdisplay -v /dev/myraw/abc
vgdispplay -v /dev/myraw

Although if there was a problem, the command line would tell you.

Re: create raw devices.

anilezfa — Thu, 07 Oct 2004 05:21:16 GMT

Thanks for all the guide. ;)