Dobrica Pavlinušić's random unstructured stuff

Virtualization workshop: Revision 6

^ KVM/QEMU

^^ Windows

intelppm.dll blue screen of death -- http://kvm.qumranet.com/kvmwiki/Windows_ACPI_Workaround

Startup script:

.pre
# 3M RFID 810
usbdev=0403:6001

sudo chown -R $USER /proc/bus/usb/*

kvm -m 512 -hda win-xp.vmdk -no-acpi -std-vga -monitor stdio -usb -usbdevice host:$usbdev

.pre

^^ USB sniffing

.pre
info usbhost
.pre

^ OpenVZ

^^ Add disk space to VE

First, resize logical volume:

.pre
root@koha-hw:~# vgextend -L +80G /dev/vg/vz
vgextend: invalid option -- L
Error during parsing of command line.

root@koha-hw:~# lvextend -L +80G /dev/vg/vz
Extending logical volume vz to 100.00 GB
Logical volume vz successfully resized

root@koha-hw:~# resize2fs /dev/vg/vz
resize2fs 1.40-WIP (14-Nov-2006)
Filesystem at /dev/vg/vz is mounted on /vz; on-line resizing required
old desc_blocks = 2, new_desc_blocks = 7
Performing an on-line resize of /dev/vg/vz to 26214400 (4k) blocks.
The filesystem on /dev/vg/vz is now 26214400 blocks long.

root@koha-hw:~# df -h /vz/
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg-vz 99G 20G 79G 21% /vz
.pre

Then, take a look how much space does VEs take:

.pre
root@koha-hw:~# vzlist -o veid,diskspace,diskspace.s,diskspace.h,diskinodes,diskinodes.s,diskspace.h
VEID DQBLOCKS DQBLOCKS.S DQBLOCKS.H DQINODES DQINODES.S DQBLOCKS.H
212052 11717220 15728640 20971520 61001 286527 20971520
212226 6407804 10485760 12582912 69011 435472 12582912
.pre

alternativly, you can also execute df inside VEs:

.pre
root@koha-hw:~# vzlist -o veid -H | xargs -i sh -c "echo --{}-- ; vzctl exec {} df -h"
--212052--
Filesystem Size Used Avail Use% Mounted on
simfs 15G 12G 3.9G 75% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
tmpfs 2.0G 0 2.0G 0% /dev/shm
--212226--
Filesystem Size Used Avail Use% Mounted on
simfs 10G 6.2G 3.9G 62% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
tmpfs 2.0G 0 2.0G 0% /dev/shm
.pre