command_line
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command_line [2012/06/15 10:16] k2patel [Quick Command Ref.] |
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 ==== | ||
| Line 127: | Line 136: | ||
| === Create Disk === | === Create Disk === | ||
| create disk of size 10G | 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> | <code bash> | ||
| - | qemu-img create -f qcow2 vdisk.img 10G | + | mkdir test |
| + | virt-copy-out -a machine2.qcow2 /metadata/testing/users test/ | ||
| </code> | </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.1339755372.txt.gz · Last modified: 2020/08/10 02:28 (external edit)
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