Weitere KVM Tools

virt-top

Install

• apt-get install virt-top

Use

• virt-top

virt-top 10:06:59 - x86_64 8/8CPU 1721MHz 31869MB
19 domains, 7 active, 7 running, 0 sleeping, 0 paused, 12 inactive D:0 O:0 X:0
CPU: 0.0%  Mem: 20384 MB (20384 MB by guests)

   ID S RDRQ WRRQ RXBY TXBY %CPU %MEM    TIME   NAME                                                                                                                                                                                           
   20 R                      0.0  0.0 484:12.57 gustavo.xinux.lan
   33 R                      0.0  0.0  35:51.73 nagus
   34 R                      0.0  0.0  13:18.95 nurmi
    1 R                      0.0  0.0  80:29:28 porkpie
   23 R                      0.0  0.0  12:58:35 tereknor
   24 R                      0.0  0.0 107:54.86 tiazel.xinux.lan
    2 R                      0.0  0.0  60:25:49 wormhole
    -                                           (casey)
    -                                           (chuck)
    -                                           (fonsi)
    -                                           (harley.xinux.lan)
    -                                           (howard)
    -                                           (ipfire)
    -                                           (kekistan)
    -                                           (loren)libguestfs-tools
    -                                           (nelson)
    -                                           (nextcloud)
    -                                           (piamia.xinux.lan)
    -                                           (zee)

libguestfs-tools

Install

• apt-get install libguestfs-tools

virt-df

• virt-df

Filesystem                           1K-blocks       Used  Available  Use%
orion:/dev/sda1                        8914984    1388808    7050272   16%

virt-filesystems

• virt-filesystems -a /mnt/local/kvm/orion.img --all --long --uuid

Name      Type       VFS     Label MBR Size        Parent   UUID
/dev/sda1 filesystem ext4    -     -   9410969600  -        15fc6185-e3be-4c2b-96f3-19f8a6960827
/dev/sda2 filesystem unknown -     -   1024        -        -
/dev/sda5 filesystem swap    -     -   1071644672  -        46867ea0-7d5c-43d4-8fda-2ae8cd5c6cc5
/dev/sda1 partition  -       -     83  9410969600  /dev/sda -
/dev/sda2 partition  -       -     05  1024        /dev/sda -
/dev/sda5 partition  -       -     82  1071644672  /dev/sda -
/dev/sda  device     -       -     -   10485760000 -        

virt-inspector

• virt-inspector /mnt/local/kvm/orion.img > orion-disk.xml

virt-cat

• virt-cat -d orion /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto ens3
iface ens3 inet dhcp

virt-edit

• virsh shutdown orion

Maschine muss ausgeschaltet sein.

• virt-edit -d orion /etc/network/interfaces

source /etc/network/interfaces.d/*

auto lo
iface lo inet loopback

auto ens3
iface ens3 inet static
 address 10.81.1.133
 netmask 255.255.0.0
 gateway 10.81.0.1
 dns-nameservers 8.8.8.8

virt-tar-out

Kompletter Inhalte packen

• virt-tar-out -a orion.img / orion.tar

Kompletter Inhalte packen inklusive zippen

• virt-tar-out -a orion.img / - | gzip > orion.tgz

virt-make-fs

• virt-make-fs --type=ext3 --size=+2G orion.tgz wega.img

guestfish

• guestfish -a /mnt/local/kvm/orion.img

Welcome to guestfish, the guest filesystem shell for
editing virtual machine filesystems and disk images.

Type: 'help' for help on commands
      'man' to read the manual
      'quit' to quit the shell

><fs> run
 100% [#################################################################################################################################################################################] --:--
><fs> list-filesystems 
/dev/sda1: ext4
/dev/sda2: unknown
/dev/sda5: swap
><fs> mount /dev/sda1 /
><fs> cat /etc/fstab 
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=15fc6185-e3be-4c2b-96f3-19f8a6960827 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=46867ea0-7d5c-43d4-8fda-2ae8cd5c6cc5 none            swap    sw              0       0

><fs> quit

virt-rescue

• virt-rescue -a wega.img

.
.
.
<rescue>
><rescue> mkdir /mnt
><rescue> mount /dev/sda1 mnt/
[  130.979612] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
><rescue> cd mnt/
><rescue> mount -o bind /proc/ proc/
><rescue> mount -o bind /sys sys/   
><rescue> mount -o bind /dev/ dev/
><rescue> chroot /mnt/ /bin/bash
root@(none):/# vi /etc/fstab 
root@(none):/# vi /etc/hostname 
root@(none):/# vi /etc/network/interfaces
root@(none):/# update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.4.0-21-generic
Found initrd image: /boot/initrd.img-4.4.0-21-generic
  /run/lvm/lvmetad.socket: connect failed: No such file or directory
  WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
done
root@(none):/# grub-install /dev/sda
Installing for i386-pc platform.
Installation finished. No error reported.
root@(none):/# exit
exit
><rescue> pwd                     
/mnt
><rescue> umount dev/
><rescue> umount sys/
><rescue> umount proc/
><rescue> cd ..
><rescue> umount /mnt/