Whats the difference between virsh destroy and virsh undefine


Whats the difference between virsh destroy and virsh undefine



I am new to servers and vms wanted to know the difference between


virsh destroy



and


virsh undefine





why did you tag python to this? have you checked the manual pages for the comand? I found this on the net: docs.oracle.com/cd/E19053-01/ldoms.mgr10/820-3838-10/…
– dopstar
Jun 29 at 9:36





Stack Overflow is a site for programming and development questions. This question appears to be off-topic because it is not about programming or development. See What topics can I ask about here in the Help Center. Perhaps Super User or Unix & Linux Stack Exchange would be a better place to ask.
– jww
Jun 29 at 10:19




2 Answers
2



The virsh destroy command initiates an immediate ungraceful shutdown
and stops the specified guest virtual machine. Using virsh destroy can
corrupt guest virtual machine file systems. Use the virsh destroy
command only when the guest virtual machine is unresponsive. The virsh
destroy command with the --graceful option attempts to flush the cache
for the disk image file before powering off the virtual machine.


virsh destroy


virsh destroy


virsh destroy


virsh
destroy


--graceful



virsh delete @ access.redhat.com


virsh delete



The virsh undefine domain command undefines a domain. If domain is inactive, the
configuration is removed completely. If the domain is active
(running), it is converted to a transient domain. When the guest
virtual machine becomes inactive, the configuration is removed
completely.


virsh undefine


transient domain



virsh undefine @ access.redhat.com


virsh undefine



https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/sect-virsh-delete



Undefine - undefines the configuration for the Virtual Machine. However, if there is any VM running with the configuration, the configuration is not removed immediately but is deffered till all the VM's with that configuration are removed. Imagine a configuration template that you are using to create your Virual Machine i.e. (Storage Required, Memory, CPU required etc). Once deleted you won't be able to create any new VM with that template.



The virsh undefine domain [--managed-save] [storage] [--remove-all-storage] [--wipe-storage] [--snapshots-metadata] [--nvram] command undefines a domain.



Destory - Is as good as killing your virtual machine.



The virsh destroy command initiates an immediate ungraceful shutdown and stops the specified guest virtual machine.






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