Use the character tool xm to manage xen save, stop, and pause

Use the character tool xm to manage xen save, stop, and pause. Objective: To conveniently manage xen virtual machines by running the xm command. Command list: xm list: list of all known virtual machines xm create: Start an unmanaged Virtual Machine xm top: Provide an overview of the status of all virtual machines xm console: Open the console to manage virtual machines xm new: add a vm to the Xenbase hosting environment xm start: start the VM xm destroy from the Xenbase hosting environment: Close the VM xm shutdown as if it was powered off: Close the VM xm reboot correctly: restart the VM xm pause: pause VM activity without releasing memory resources xm unpause: Activate the pause VM xm save: save the VM status to a file xm restore: restart the VM xm block-attach that has been saved in the file: Add a new hard disk xm block-detach: delete a hard disk. The following describes some important commands (1). display all running virtual machines [root @ localhost ~] # Xm list Name ID Mem (MiB) VCPUs State Time (s) domain-0 0 32768 16 r ----- 210.9 appdata_vm 1 6113 8-B ---- 202.3 rows _vm 2 8191 8-B ---- 31.8 mysql_vm 3 6113 8-B ---- 31.3 queue_vm 4 6113 8-B ---- 31.5 (2) run a virtual machine [root @ localhost ~] # Xm create/etc/xen/appdata_vm Using config file "/etc/xen/appdata_vm". Started domain appdata_vm (3), enter a virtual machine for management [root @ localhost ~] # Xm console appdata_vm (4), disable Virtual Machine [root @ localhost ~] # Xm shutdown appdata_vm (5), restart the VM [root @ localhost ~] # Xm reboot appdata_vm (6), increase the disk space of the xen virtual machine, and use the dd command to create a 30 GB hard disk device. [Root @ localhost ~] # Dd if =/dev/zero bs = 1024 k count = 30720>/data/appdata_vm.img add to Virtual Machine [root @ localhost ~] # Xm block-attach appdata_vm tap: aio:/data/appdata_vm.img xvdb w enter the VM to format and mount the device [root @ localhost ~] # Xm console appdata_vm [root @ localhost ~] # Fdisk-l Disk/dev/xvdb: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 cylinders Units = cylinders of 16065*512 = 8225280 bytes Disk/dev/xvdb doesn't contain a valid partition table found that/dev/xvdb is the hard Disk setting I just added. [Root @ localhost ~] # Mkfs. ext3/dev/xvdb format [root @ localhost ~] # Mount/dev/xvdb/home to the/home directory. View [root @ localhost ~] # Df-h Filesystem Size Used Avail Use % Mounted on/dev/xvda3 6.8G 1.9G 4.6G 30% // dev/xvda1 494 M 18 M 451 M 4%/boot/dev/ xvdb 30G 173 M 28G 1%/home tmpfs 3.0G 0 3.0G 0%/dev/shm my hard drive adds 30G space.