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home_server:home_server_setup:kvm [2025-02-08 Sat wk06 11:38] – [Shrink the Disk File] baumkphome_server:home_server_setup:kvm [2025-02-08 Sat wk06 17:11] (current) – [kvm back-up links] baumkp
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 ---- ----
 =====KVM Backup===== =====KVM Backup=====
-There seems to be 4 main ways to backup a KVM virual machine +There seems to be 3 main ways to backup a KVM virual machine:
-  - Copy the main file(s) while the VM is running +
-    -  Not recommended as file corruption will probably occur as the VM operation may and probably will modify the file during the copy process+
   - Shutdown the VM first and then copy the file.  Start the VM again after the copy is completed.   - Shutdown the VM first and then copy the file.  Start the VM again after the copy is completed.
   - Use virsh backup-begin command to allow live full backup   - Use virsh backup-begin command to allow live full backup
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     - Create a snapshot of the VM and direct all changes to the snapshot allowing safe backup of main VM file     - Create a snapshot of the VM and direct all changes to the snapshot allowing safe backup of main VM file
     - Active back commit the snapshot and verify back commit worked     - Active back commit the snapshot and verify back commit worked
 +  * Copy the main file(s) while the VM is running 
 +    -  <fc #ff0000>Not recommended</fc>, as file corruption will probably occur as the VM operation may and probably will modify the file during the copy process
 ====KVM Offline Backup==== ====KVM Offline Backup====
 <fc #ff0000>Note this only works on VMs that are shut down</fc> <fc #ff0000>Note this only works on VMs that are shut down</fc>
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   -''sudo virsh define --file <path-to-xml-file>'' to import (define) a VM from an XML file.   -''sudo virsh define --file <path-to-xml-file>'' to import (define) a VM from an XML file.
  
 +
 +  *[[https://poweradm.com/backup-kvm-virtual-machine/How to Backup a Virtual Machine on KVM?]]
  
 References: References:
   *[[https://ostechnix.com/export-import-kvm-virtual-machines-linux/|How To Export And Import KVM Virtual Machines In Linux]]   *[[https://ostechnix.com/export-import-kvm-virtual-machines-linux/|How To Export And Import KVM Virtual Machines In Linux]]
 ====kvm back-up links==== ====kvm back-up links====
-  *[[https://schh.medium.com/backup-and-restore-kvm-vms-21c049e707c1|Backup and Restore KVM Vms]] +  *[[https://schh.medium.com/backup-and-restore-kvm-vms-21c049e707c1|Backup and Restore KVM VMs]] - Shutdown VM method 
-  *[[https://www.bacula.org/kvm-backup-vm/|Backula Technical Considerations of a KVM Backup Process]]+  *[[https://www.bacula.org/kvm-backup-vm/|Backula Technical Considerations of a KVM Backup Process]] - Shutdown VM method
   *[[https://www.virtkick.com/docs/how-to-perform-a-live-backup-on-your-kvm-virtual-machines.html|Virtkick - How to Perform a Live Backup on your KVM Virtual Machines]]   *[[https://www.virtkick.com/docs/how-to-perform-a-live-backup-on-your-kvm-virtual-machines.html|Virtkick - How to Perform a Live Backup on your KVM Virtual Machines]]
   *[[https://libvirt.org/kbase/live_full_disk_backup.html|Libvirt.org - Efficient live full disk backup]]   *[[https://libvirt.org/kbase/live_full_disk_backup.html|Libvirt.org - Efficient live full disk backup]]
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   * ''sudo virsh pool-list'' : List storage pools   * ''sudo virsh pool-list'' : List storage pools
     * ''%%sudo virsh vol-list --pool pool-name%%'' : List volumes in ''pool-name''     * ''%%sudo virsh vol-list --pool pool-name%%'' : List volumes in ''pool-name''
 +  * ''sudo virsh undefine domain-name'' : To remove the VM definition
   * virsh : start, shutdown, destroy, reboot, or pause (suspend / resume)   * virsh : start, shutdown, destroy, reboot, or pause (suspend / resume)
     * ''sudo virsh start domain-name'' : To start a virtual machine of domain ''domain-name''     * ''sudo virsh start domain-name'' : To start a virtual machine of domain ''domain-name''