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command_line [2011/06/02 16:32]
k2patel
command_line [2021/08/24 21:11] (current)
k2patel
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 +
 +
 ====== KVM Command Line ====== ====== KVM Command Line ======
  
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 [[http://​libvirt.org/​formatdomain.html|Domain Format in KVM]] [[http://​libvirt.org/​formatdomain.html|Domain Format in KVM]]
 +
 +==== Test your bootable USB on kvm ====
 +In order to test your USB using KVM use following command.
 +<code bash>
 +qemu-kvm -hdb <​device> ​
 +</​code>​
 +In my case device was "/​dev/​sdb"​.
  
 ==== Converting Existing Image ==== ==== Converting Existing Image ====
 === Converting VMWARE image for KVM === === Converting VMWARE image for KVM ===
 +
 use following command. use following command.
 <code bash> <code bash>
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 </​code>​ </​code>​
  
-Now follow [[ #Converting VMWARE image for KVM | C]]+converting .ova is just easy\\ 
 +some times ovftool failing\\ 
 + 
 +<​html>​ 
 +<span style="​color:​red;​font-size:​150%;">​If Above does not work just do</​span>​ 
 +<​p><​span style="​color:​red;​font-size:​150%;">​ tar -xvf Amazon-EC2-VM-Import-Connector.ova </​span></​p>​ 
 +</​html>​ 
 + 
 +Now follow [[ #Converting VMWARE image for KVM | Converting VMWARE image for KVM ]]
  
  
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 detach-interface Detach a network interface from a guest. detach-interface Detach a network interface from a guest.
 </​code>​ </​code>​
 +
 +==== FU Commands ====
 +
 +=== Create Disk ===
 +create disk of size 10G
 +<code bash | for dynamic allocation>​
 +qemu-img create -f raw vdisk.img 10G 
 +</​code>​
 +OR
 +<code bash | preallowcation>​
 +dd if=/​dev/​zero of=vdisk.img bs=1G count=0 seek=[NUMBER_OF_GB]
 +</​code>​
 +
 +==== How to allow network access to KVM Guest ====
 +
 +Modify guest.xml file and listen variable.
 +<code bash | vi /​etc/​libvirt/​qemu/​Archlinux.xml>​
 +<​graphics type='​vnc'​ port='​-1'​ autoport='​yes'​ listen='​192.168.1.4'​ passwd='​testing1'/>​
 +</​code>​
 +
 +==== Extract folder from KVM Guest Image ====
 +This appears to be the far easy solution than I thought.\\
 +[[http://​libguestfs.org/​virt-copy-out.1.html|Link to official Document]]
 +
 +For RHEL you require the following packages installed.
 +  * libguestfs-tools
 +  * libguestfs-xfs ​ # if guest filesystem is XFS.
 +
 +<code bash>
 +mkdir test
 +virt-copy-out -a machine2.qcow2 /​metadata/​testing/​users test/
 +</​code>​
 +
 +==== Image File explorer ====
 +This is a simple way to extract or access files.\\
 +Scan and assign the dev node.
 +<code bash>
 +losetup --partscan --find --show sdcard.img
 +</​code>​
 +
 +List all the block devices, including newly scanned.
 +<code bash>
 +lsblk --fs
 +</​code>​
 +
 +Mounting the file system
 +<code bash>
 +mount /​dev/​loop0p2 /mnt/sdcard
 +</​code>​
 +
 +Once unmounted remove the lo drive.
 +<code bash>
 +losetup --detach-all
 +</​code>​
 +
  
command_line.1307032363.txt.gz · Last modified: 2020/08/10 02:28 (external edit)