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From: tohanson@gonzo.lerc.nasa.gov (Jeff Hanson)
Newsgroups: comp.sys.sgi
Subject: Re: mklv(1M) help on 3.3.1
Message-ID: <1991May13.150814.27587@eagle.lerc.nasa.gov>
Date: 13 May 91 15:08:14 GMT
References: <1991May13.084225@hiatus.zko.dec.com>
Sender: news@eagle.lerc.nasa.gov
Organization: NASA Lewis Research Center [Cleveland]
Lines: 56

Since my mail to Kevin bounces and since this may be of interest to others,
here is how I extended by system disk's /usr partition onto a second disk.


Installation of logical volume with 2 SCSI disks to expand /usr partition on
root disk onto the second.

1.  Make sure the two disks are NOT on the same SCSI address.

2.  Read Sys. Admin. Guide, Chapter 7, Section 4 on Logical Volumes

3.  Backup /usr partition

4.  Insert the following line in /etc/lvtab
	lv0:extension of /usr:devs=/dev/dsk/dks0d1s6,/dev/dsk/dksc0d2s7
Name of logical volume:description:disk partitions (6 on disk1 and all of disk2)

5.  Create fstab.lvol			(Check exports list)
	cp fstab fstab.lvol
	ed fstab.lvol
	s[usr[dsk/lv0[
	s[rusr[rdsk/lv0[
	w
	q
Line is changed from 
	/dev/usr /usr efs rw,raw=/dev/rusr 0 0
to
/dev/dsk/lv0 /usr efs rw,raw=/dev/rdsk/lv0 0 0

6.  Go to single user mode
	init s

7.  Run the following to make the logical volume
	/etc/mklv lv0

8.  Check the file system on the first disk
	fsck /dev/dsk/dks0d1s6

9.  Expand usr partition unto the second disk.
	/etc/growfs /dev/rdsk/lv0

10. Check the logical file system
	fsck /dev/rdsk/lv0

11. Move the modified version of fstab into place
	mv fstab fstab.nolvol
	mv fstab.lvol fstab

12. Go back to multiuser mode
	init 2
-- 
---------------------------------------------------------------------------
 Jeff Hanson - Scientific Graphics Programmer and Workstation Administrator
 NASA Lewis Research Center, MS 86-4, Cleveland, Ohio 44135
 Telephone - (216) 433-2284  Fax - (216) 433-2182
 tohanson@gonzo.lerc.nasa.gov	-   ViSC: Better Science Through Pictures