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command_line [2015/01/27 15:18] – [Test your bootable USB on kvm] k2patelcommand_line [2021/08/24 21:11] (current) k2patel
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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 ====
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 <graphics type='vnc' port='-1' autoport='yes' listen='192.168.1.4' passwd='testing1'/> <graphics type='vnc' port='-1' autoport='yes' listen='192.168.1.4' passwd='testing1'/>
 </code> </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.1422371937.txt.gz · Last modified: 2020/08/10 02:28 (external edit)