LVM allows for great flexibility when allocating Hard disk partitions. The reason partitions are used is because: of seperate xen host servers, and for providing for a more stable server: if /var/tmp is filled up - the server can still function, as other partitions are unaffected.

• Check if there is partitions available.

cfdisk

• If a partition is made via cfdisk - a reboot maybe required for udev to pick it up.
• The commands listed below should be self-explainatory.

apt-get install lvm2 pvcreate /dev/sda3 pvcreate /dev/sdb2 vgcreate main-vol /dev/sda3 /dev/sdb2 vgscan

lvcreate -n zachome –size 50g main-vol lvcreate -n zachomeswp –size 1g main-vol

mkfs.ext3 /dev/main-vol/zachome mkswap /dev/main-vol/zachomeswp

resize2fs /dev/main-vol/zachome 40000 lvreduce -L-10g /dev/main-vol/zachome #subtract 10Gb from current size!

pvscan

lvscan

//umount the partition or poweroff the domU server. //the commands below should be available on the dom0 or main server. lvextend -L+10G /dev/main-vol2/twister //extend the LinuxVolume. Add 10 gigabytes to the present size. e2fsck -f /dev/main-vol2/twister //Run a (forced) check on the filesystem resize2fs /dev/main-vol2/twister //resize the filesystem

swapoff -v /dev/VolGroup00/LogVol01 lvm lvresize /dev/VolGroup00/LogVol01 -L +256M mkswap /dev/VolGroup00/LogVol01 swapon /dev/VolGroup00/LogVol01

e2fsck -f /dev/vg0/vm07-root resize2fs -p /dev/vg0/vm07-root 10G lvresize -L 11G /dev/vg0/vm07-root e2fsck -f /dev/vg0/vm07-root resize2fs -p /dev/vg0/vm07-root

http://fedorasolved.org/Members/zcat/shrink-lvm-for-new-partition

Main One = http://www.debian-administration.org/articles/410

http://www.netadmintools.com/art367.html

http://www.netadmintools.com/art366.html