topic Re: raw device size in Operating System - HP-UX

raw device size

wish_1 — Wed, 01 Mar 2006 19:17:15 GMT

dear all

I want to know how take the size of raw devices & how to add new raw device both in solaris 9 and HP-UX 11i

thanks in adv
regards
wish

Re: raw device size

Geoff Wild — Wed, 01 Mar 2006 20:29:20 GMT

In HP-UX - diskinfo will show you the size of the raw device.

"Managing Disks"

http://docs.hp.com/en/B2355-90950/ch06s01.html

In Solaris - I believe the command is prtvtoc and metainit to create raw devices - check out http://docsun.cites.uiuc.edu/sun_docs/C/solaris_9/SUNWaadm/LOGVOLMGRADMIN/toc.html

Rgds...Geoff

Re: raw device size

Rajeev Shukla — Wed, 01 Mar 2006 20:33:11 GMT

In HPUX you add RAW device by adding a LV
lvcreate -L -n
this will create block and character device files in the VG and the character device files are the RAW device files (starting with a prefix of r)

Now to get the size of that RAW device file you use lvdisplay command but use the block device file instaed of character device file

Re: raw device size

Alzhy — Wed, 01 Mar 2006 22:56:44 GMT

Wish, Peace.

If you use VxVM on Solaris and HP-UX as most shops nowadays do, the command is something like:

vxassist -g sapdg make maaster01_dbf 8g layout=striped ncols=8 stwidth=64

Your RAW device will then be:

/dev/vx/rdsk/sapdg/master01_dbf

If using Solaris' native volume manager (Disksuite or SVM):

metainit

Your Raw device will be something like:

/dev/md/rdsk/d100

If using HP's native LVM (Above VxVM stripe will be built simlarly using:):

lvcreate -i 8 -I 64 -L 8192 -n master01 vgsap

Your RAW device will be(note the r):

/dev/vgsap/rmaster01

Hope this helps.

Re: raw device size

Alzhy — Wed, 01 Mar 2006 23:06:26 GMT

ANd if you want to find know the sizes of your RAW devices:

HP-UX/SOlaris running VxVM:

vxprint -Aht|grep "^v"
vxprint -Aht

HP-UX Running LVM:

vgdisplay -v

Solaris running Disksuite/SVM:

metastat