virshCommand
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virshCommand
The virsh is used to manage domains. You must runthe commands as the root user or by assuming the appropriate role accounton the host operating system. The commands cannot be run in the guest domain.
virsh Command
Description
virshattach-device
Attach device from an XML file
virsh attach-disk
Attach disk device
virsh autostart
Configure a domain to automatically start at boot time.
virsh capabilities
Return capabilities of the hypervisor and drivers.
virsh connect
Connect to the hypervisor.
virsh connect--readonly
Connect to the hypervisor in read-only mode.
virsh consoledomain
Connect to a guest console
virsh create file
Create a domain based on the parameters contained in the XML file, where file is an absolute pathname. Such a file can be created using virsh dumpxml subcommand. The XML configurationfile should not be directly edited.
virsh define file
Define a domain from an XML file, but do not start the domain
virsh destroy domain-id
Terminate a domain immediately
virsh detach-device domain-idfile
Detach a device defined by the given XML file from the specified domain.
virsh domid domain_name
Converts a domain name to a numeric domain ID.
virsh dominfo domain_id
Return basic info about a domain
virsh domname domain_id
Converts a numeric domain ID to a domain name.
virsh domstate domain_id
Returns the state of a running domain. See the list subcommand.
virsh domuuid domain
Convert the specified domain name or ID to a domain UUID.
virsh dump domainfile
Dump the core of the domain specified by domain tothe file specified by file for analysis.
virsh dumpxml domain-id
Obtain domain information in XML
virsh help
Display descriptions of the subcommands. Include a subcommand at theend of the command line to display help about that subcommand.
virsh list
List domains. By default, only running domains are displayed. Use --inactive to display only non-running domains.
virsh nodeinfo
Print basic information about a node.
virsh quit
Quit this interactive terminal
virsh reboot domain-id
Reboot a domain. This command is identical to the effect of running init 6.The command returns immediately, but the entire reboot process might takea minute or more.
virsh restore state-file
Restore a domain from a saved state file.
virsh resume domain-id
Moves a domain out of the paused state, making the domain eligible forscheduling by the hypervisor.
virsh reboot domain-id
Reboot a domain
virsh restore domain-id
Restore a domain from a saved state
virsh resume domain-id
Resume running a suspended domain.
virsh save domain state-file
Save a running domain to a state file so that it can be restored byusing the restore subcommand at a later time. In this state,the domain is not running on the system, thus the memory allocated for thedomain will be free for use br other domains. Note that network connections present before the save operation mightbe severed because TCP timeouts might have expired.
virsh setvcpus domaincount
Change the number of virtual CPUs active in the specified guest domain.The count parameter is the number of virtual CPUs.
virsh schedinfo domain
Show or set the scheduling paramaters for the specified domain name,ID, or UUID. This subcommand takes the options --weight number and --cap number.
virsh setmaxmem domain kilobytes
Change the maximum memory allocation limit in the specified guest domain.The kilobytes parameter is the maximum memory limitin kilobytes.
virsh setmem domain kilobytes
Change the current memory allocation in the specified guest domain.The kilobytes parameter is the number of kilobytesin memory.
virsh setvcpus domain count
Change the number of virtual CPUs active in the specified guest domain.The count parameter is the number of virtual CPUs.
virsh shutdown domain
Coordinates with the domain operating system to perform graceful shutdown.The effect of this command is identical to the effect of running init5. The shutdown might take an unexpected length of time, depending on theservices that must be shut down in the domain. In addition, it is possiblethat the subcommand will not succeed.
virsh start domain
Start a previously defined inactive domain.
virsh suspend domain
Suspend a domain. A domain in this state still consumes allocated resources,such as memory, but is not eligible for scheduling by the hypervisor.
virsh undefine domain
Undefine the configuration for the inactive domain by specifying eitherits domain name or UUID.
virsh vcpuinfo domain
Return basic information about the domain's virtual CPUs.
virsh vcpupin domain vcpu cpulist
Pin domain's virtual CPUs to the host's physical CPUs. The domain parameter is the domain name, ID, or UUID. The vcpu parameteris the VCPU number. The cpulist parameter is alist of host CPU numbers, separated by commas.
virsh version
Display version information.
virsh vncdisplay domain-id
VNC display
The virsh is used to manage domains. You must runthe commands as the root user or by assuming the appropriate role accounton the host operating system. The commands cannot be run in the guest domain.
virsh Command
Description
virshattach-device
Attach device from an XML file
virsh attach-disk
Attach disk device
virsh autostart
Configure a domain to automatically start at boot time.
virsh capabilities
Return capabilities of the hypervisor and drivers.
virsh connect
Connect to the hypervisor.
virsh connect--readonly
Connect to the hypervisor in read-only mode.
virsh consoledomain
Connect to a guest console
virsh create file
Create a domain based on the parameters contained in the XML file, where file is an absolute pathname. Such a file can be created using virsh dumpxml subcommand. The XML configurationfile should not be directly edited.
virsh define file
Define a domain from an XML file, but do not start the domain
virsh destroy domain-id
Terminate a domain immediately
virsh detach-device domain-idfile
Detach a device defined by the given XML file from the specified domain.
virsh domid domain_name
Converts a domain name to a numeric domain ID.
virsh dominfo domain_id
Return basic info about a domain
virsh domname domain_id
Converts a numeric domain ID to a domain name.
virsh domstate domain_id
Returns the state of a running domain. See the list subcommand.
virsh domuuid domain
Convert the specified domain name or ID to a domain UUID.
virsh dump domainfile
Dump the core of the domain specified by domain tothe file specified by file for analysis.
virsh dumpxml domain-id
Obtain domain information in XML
virsh help
Display descriptions of the subcommands. Include a subcommand at theend of the command line to display help about that subcommand.
virsh list
List domains. By default, only running domains are displayed. Use --inactive to display only non-running domains.
virsh nodeinfo
Print basic information about a node.
# virsh nodeinfo
CPU model: i86pc
CPU(s): 2
CPU frequency: 2391 MHz
CPU socket(s): 2
Core(s) per socket: 1
Thread(s) per core: 1
NUMA cell(s): 1
Memory size: 4127744 kBvirsh quit
Quit this interactive terminal
virsh reboot domain-id
Reboot a domain. This command is identical to the effect of running init 6.The command returns immediately, but the entire reboot process might takea minute or more.
virsh restore state-file
Restore a domain from a saved state file.
virsh resume domain-id
Moves a domain out of the paused state, making the domain eligible forscheduling by the hypervisor.
virsh reboot domain-id
Reboot a domain
virsh restore domain-id
Restore a domain from a saved state
virsh resume domain-id
Resume running a suspended domain.
virsh save domain state-file
Save a running domain to a state file so that it can be restored byusing the restore subcommand at a later time. In this state,the domain is not running on the system, thus the memory allocated for thedomain will be free for use br other domains. Note that network connections present before the save operation mightbe severed because TCP timeouts might have expired.
virsh setvcpus domaincount
Change the number of virtual CPUs active in the specified guest domain.The count parameter is the number of virtual CPUs.
virsh schedinfo domain
Show or set the scheduling paramaters for the specified domain name,ID, or UUID. This subcommand takes the options --weight number and --cap number.
virsh setmaxmem domain kilobytes
Change the maximum memory allocation limit in the specified guest domain.The kilobytes parameter is the maximum memory limitin kilobytes.
virsh setmem domain kilobytes
Change the current memory allocation in the specified guest domain.The kilobytes parameter is the number of kilobytesin memory.
virsh setvcpus domain count
Change the number of virtual CPUs active in the specified guest domain.The count parameter is the number of virtual CPUs.
virsh shutdown domain
Coordinates with the domain operating system to perform graceful shutdown.The effect of this command is identical to the effect of running init5. The shutdown might take an unexpected length of time, depending on theservices that must be shut down in the domain. In addition, it is possiblethat the subcommand will not succeed.
virsh start domain
Start a previously defined inactive domain.
virsh suspend domain
Suspend a domain. A domain in this state still consumes allocated resources,such as memory, but is not eligible for scheduling by the hypervisor.
virsh undefine domain
Undefine the configuration for the inactive domain by specifying eitherits domain name or UUID.
virsh vcpuinfo domain
Return basic information about the domain's virtual CPUs.
virsh vcpupin domain vcpu cpulist
Pin domain's virtual CPUs to the host's physical CPUs. The domain parameter is the domain name, ID, or UUID. The vcpu parameteris the VCPU number. The cpulist parameter is alist of host CPU numbers, separated by commas.
virsh version
Display version information.
virsh vncdisplay domain-id
VNC display