These are absolutely definitely not a complete set of notes,
but merely a set of notes to remind myself of things I do or may want to
do, cover or mention as part of the presentation - most notably things I
might want to have handy or might possibly otherwise miss that the
prepared web pages may not fully and rather/quite immediately remind me
to cover.

vshortp
clear
(login) 62x22 Huge
:se tabstop=4 shiftwidth=4 autoindent
startx -- :3 -xf86config XF86Config-4 -layout 'IBM_ThinkPad_T40p_TYPE_2373-G1U_LCD_640x480' &
xset s off
#xscreensaver -no-splash -timeout 0 -cycle 1 -no-lock-mode
xclock -digital -update 1 -rv -geometry +0-0 &
xclock -update 1 -rv -geometry +0-0 &
mozilla -geometry 640x513#-6-36
xterm -geometry 63x23 & #-6-23 Huge
xtermtitle demo
cd ~/tmp/BALUG
script typescript.demo
vshortp
clear
xterm -geometry 63x23#-6-23 Huge
xtermtitle demo\#
cd ~michael/tmp/BALUG
script typescript.demo\#
exec sudo su -
vshortp
clear
>>/dev/null 2>&1 kdf &
//Size|Full %|Usage|Mount point ^
xzoom -geometry 640x494 & #-6-36

Title Page

Welcome.

Evaluation Sheets
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(mini-bio?
	Hello my name is Michael Paoli
	I've worked with UNIX as far back as 1980
	I've been administering UNIX Systems since 1987
	personal systems since 1989,
	have never had an operating installed on hard drives
	other than XENIX, UNIX or LINUX
	(and I'm up to 7th hard drive now)
	except
	until about 2 years ago when buying the laptop I wanted included
	an operating system I wasn't very interested in (and that OS
	typically runs less than 20 minutes a month on my laptop)
	First used Logical Volume Management software <~=1995
	been using and administering LINUX since 1998
	have been using LVM on LINUX for about 2 years.
)

(
Preface Notes
	This presentation was not designed to be a comprehensive tutorial or training on LVM.
)

(questions?)

LVM - without LVM - by Partitions/Cylinders/Slices/...
	(not shown to scale)
	can't change start of partition while it's in use
	need contiguous space to grow partition
	difficult to manage/plan/anticipate
	hazardous to change partitions on in-use disk
	can lump all filesystems together, but that has drawbacks
		manageability
		security
		scalability

(questions?)

What Is Logical Volume Manager (LVM)?
	"Physical Volumes" - storage devices, may be LUNs, disks, partitions,
		on LINUX, also loopback and metadevices

(questions?)

Other Volume Managers
	LINUX LVM
		versions
	HP-UX
		rather similar to LINUX, except:
			free, as in buy this proprietary hardware, and we'll throw in some
				free as in beer ...
			mirroring - optional non-free additional software
			pvmove - can't specify source/target PEs
			other minor differences (LINUX has some lower level commands
				that HP-UX doesn't, e.g. pvdata)
	AIX - rather like HP-UX LVM, but to distinguish themselves
		most (or all?) commands renamed, e.g. vgcreate --> createvg
	Veritas
		Veritas Volume Manager
			spiffy very capable software,
				nice GUI; command window feature
			not free as in beer, not free as in freedom
			available for various platforms, including LINUX
		Sun Volume Manager
			OEM version of Veritas Volume Manager
				different support/packaging, some limitations,
					otherwise essentially same software
		Tru64 UNIX - Logical Storage Manager (LSM)
			mostly just like Veritas Volume Manager except:
			commands renamed:
				s/vxvol/volume;s/vx/vol/
				some GUI stuff renamed/relocated
			some other tweaks/enhancements
				different color scheme in GUI
				some extentions not in Veritas Volume Manager
				(theoretically) an integrated part of the operating system
	Solaris Volume Manager
		free as in beer, with Solaris >=9
		extention of Solstaice DiskSuite
	Solstice DiskSuite
		free as in free beer with the purchase of ...
	Filesystem Oriented
		Solaris 10 ZFS
			--> storage pools --> storage polcies --> ZFS filesystems
		Tru64 UNIX ADvFS
			spans devices ...
Other Volume Managers - not a complete list :-)

(questions?)

LVM Basics
	... not a complete list of commands

(questions?)

Overview
	create PVs
	create VGs
	create LVs
	use LVs as filesystems or for other storage
	manage LVs, etc.

(questions?)

(Demo "slide")

(questions?)

Demonstration
	# sfdisk -uS -l /dev/hda | grep -v 'hda[1-6] '
	# pvcreate /dev/hda1[89] /dev/hda20
	# vgcreate VG1 /dev/hda18
	//may want to use various non-default options with vgcreate
	# vgdisplay -v VG1 | less
	# lvcreate --size 128M --name LV1 VG1
	# mkreiserfs /dev/VG1/LV1
	# (umask 022 && mkdir /var/tmp/1)
	// kdf
	# mount -t reiserfs /dev/VG1/LV1 /var/tmp/1
	// kdf
	# chown michael /var/tmp/1
	$ df -k /var/tmp/1
	$ cd /var/tmp/1
	$ ls -alb
	$ cp /var/tmp/cdrom/cdrom/Linuxcare_bootable_toolbox_V2.0.raw Linuxcare_bootable_toolbox_V2.0.raw
	$ touch -r /var/tmp/cdrom/cdrom/Linuxcare_bootable_toolbox_V2.0.raw Linuxcare_bootable_toolbox_V2.0.raw
	$ ls -albs
	$ md5sum < Linuxcare_bootable_toolbox_V2.0.raw > Linuxcare_bootable_toolbox_V2.0.raw.md5sum
	# lvdisplay -v /dev/VG1/LV1 | less
	# vgextend VG1 /dev/hda19
	# vgdisplay -v VG1 | less
	# pvmove --verbose /dev/hda18
	# lvdisplay -v /dev/VG1/LV1 | less
	$ pwd
	$ ls -alb
	$ cat *.md5sum
	$ md5sum < Linuxcare_bootable_toolbox_V2.0.raw
	$ cp /var/local/pub/mirrored/cdimage.debian.org/pub/cdimage-testing/sarge_d-i/i386/rc1/sarge-i386-netinst.iso sarge-i386-netinst.iso
	$ df -k /var/tmp/1
	//kdf
	$ rm sarge-i386-netinst.iso
	# lvextend -L +64M /dev/VG1/LV1
	# lvdisplay -v /dev/VG1/LV1 | less
	# mount -o remount,resize=`expr 192 '*' 256` /dev/VG1/LV1
	//kdf
	$ df -k /var/tmp/1
	$ cp /var/local/pub/mirrored/cdimage.debian.org/pub/cdimage-testing/sarge_d-i/i386/rc1/sarge-i386-netinst.iso sarge-i386-netinst.iso
	$ touch -r /var/local/pub/mirrored/cdimage.debian.org/pub/cdimage-testing/sarge_d-i/i386/rc1/sarge-i386-netinst.iso sarge-i386-netinst.iso
	$ df -k /var/tmp/1
	// grow, umount, reduce, remount, export, import, ...

Questions?

Evaluation Sheets
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