🖥️xm

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the xm command with important options and switches using examples.

3 minute read

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# Shows information about the Xen host
xm info

# Shows information about doms (states include r for running, b for blocked, c for crashed, p for paused and the worse, d for dying).
xm list

# Shows virtual interfaces for doms
xm network-list

# Shows information from the Xen logs
xm log

# Reboots a VM
xm reboot

# Shows dom virtual processors
xm vcpu-list

# Shows hosts and domains similar to how top works in *nix
xm top

# Shows uptime
xm uptime

# Shows the send message buffer
xm dmesg

# Create a node called ${domain_name}
xm create ${domain_name}

# Attach to the console of the ${domain_name} node
xm console ${domain_name}

# Deletes that newly created ${domain_name} node
xm destroy ${domain_name}

# Invoke an interactive shell environment of your xend
xm shell

# Turn off a VM
xm shutdown

# Rather than shut the VM down, just pause it (starts back up much faster),
# but if the host is rebooted then state is lost (otherwise use suspend)
xm pause

# Suspends a VM, which writes the data to disk, so changes wouldn't be lost on restart.
xm suspend

# Rename installed VMs
xm rename

# If a VM is paused, fire it up
xm resume

# Similar to suspend except with user definable state file
xm save

# Similar to resume except restoreable with exports that used the save verb
xm restore

# Dumps core per domain
xm dump-core

# Sends system requests per domain
xm sysrq

# Lists block devices per domain
xm block-list

# Configure the maximum memory for a domain
xm mem-max

# Configure the current memory allowance for a domain
xm mem-set

# Configure active processors for a domain
xm vcpu-set

# Move a domain to another server (e.g. using the -l operator to do so live)
xm migrate

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command xm in a clear format. This allows users to quickly access the needed information for xm without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for xm are a valuable resource to work efficiently and purposefully.

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