xen xl命令记录

1.xl info

[root@vt-snb7 ~]# xl info

host                   : vt-snb7     #Dom0的主机名

release                : 3.1.0-rc7+   #Dom0的内核版本

version                : #1 SMP Mon Mar 26 09:34:05 CST 2012  #Dom0内核编译的时间

machine                : x86_64     #Dom0内核运行的平台

nr_cpus                : 32         #系统中的逻辑CPU数量

max_cpu_id             : 127        #host中可能的最大的CPU编号

nr_nodes               : 2          #NUMA节点的数量

cores_per_socket       : 8     #每个CPU socket上的core数量

threads_per_core       : 2          #每个core的线程数量（大于1即是超线程）

cpu_mhz                : 2693       #CPU的主频

hw_caps                : bfebfbff:2c100800:00000000:00003f40:15bee3ff:00000000:00000001:00000000

       #CPU的capabilities，实际上同于/proc/cpuinfo中的flags，是其的另外矢量编码之类

virt_caps              : hvm hvm_directio     #硬件系统关于虚拟化的feature，目前只定义了hvm和hvm_directio(即:VT-d)

total_memory           : 32726 #硬件系统的中的内存

free_memory            : 22803 #空闲的内存（未被guest和hypervisor使用的）

sharing_freed_memory   : 0 # FIX ME

sharing_used_memory    : 0 # FIX ME

free_cpus              : 0 # FIX ME

xen_major              : 4 #Xen的主版本号

xen_minor              : 2 #Xen的次版本号

xen_extra              : -unstable #Xen的附加版本号

xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64

#Xen的capabilities，支持32位和64位的PV和HVM虚拟机

xen_scheduler          : credit #当前Xen的CPU调度算法

xen_pagesize           : 4096 #Xen一次块设备上读取数据的大小，单位是bytes

platform_params        : virt_start=0xffff800000000000 #从这个地址之后就是hypervisor占用的

xen_changeset          : Fri Mar 23 20:51:48 2012 +0000 25099:4bd752a4cdf3 #Xen的changeset

xen_commandline        : dom0_mem=2048M iommu=1 loglvl=all guest_loglvl=all msi=1 hap_1gb=1 conring_size=4M

       #grub中xen启动时的命令行

cc_compiler            : gcc version 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC)   #本次Xen hypervisor的编译器

cc_compile_by          : build #编译Xen的用户名

cc_compile_domain      : sh.intel.com         #编译Xen的机器的所在的域

cc_compile_date        : Mon Mar 26 09:30:56 CST 2012 #编译Xen的时间

xend_config_format     : 4 #配置文件的格式，目前是4，对xl已经不太重要了，XL不用Xend了

 

2.xl help

Usage xl [-v] <subcommand> [args]

xl full list of subcommands:

 create              Create a domain from config file <filename>
 list                List information about all/some domains
 destroy             Terminate a domain immediately
 shutdown            Issue a shutdown signal to a domain
 reboot              Issue a reboot signal to a domain
 pci-attach          Insert a new pass-through pci device
 pci-detach          Remove a domain's pass-through pci device
 pci-list            List pass-through pci devices for a domain
 pci-list-assignable-devicesList all the assignable pci devices
 pause               Pause execution of a domain
 unpause             Unpause a paused domain
 console             Attach to domain's console
 vncviewer           Attach to domain's VNC server.
 save                Save a domain state to restore later
 migrate             Save a domain state to restore later
 dump-core           Core dump a domain
 restore             Restore a domain from a saved state
 migrate-receive     Restore a domain from a saved state
 cd-insert           Insert a cdrom into a guest's cd drive
 cd-eject            Eject a cdrom from a guest's cd drive
 mem-max             Set the maximum amount reservation for a domain
 mem-set             Set the current memory usage for a domain
 button-press        Indicate an ACPI button press to the domain
 vcpu-list           List the VCPUs for all/some domains
 vcpu-pin            Set which CPUs a VCPU can use
 vcpu-set            Set the number of active VCPUs allowed for the domain
 list-vm             List the VMs,without DOM0
 info                Get information about Xen host
 sched-credit        Get/set credit scheduler parameters
 domid               Convert a domain name to domain id
 domname             Convert a domain id to domain name
 rename              Rename a domain
 trigger             Send a trigger to a domain
 sysrq               Send a sysrq to a domain
 debug-keys          Send debug keys to Xen
 dmesg               Read and/or clear dmesg buffer
 top                 Monitor a host and the domains in real time
 network-attach      Create a new virtual network device
 network-list        List virtual network interfaces for a domain
 network-detach      Destroy a domain's virtual network device
 block-attach        Create a new virtual block device
 block-list          List virtual block devices for a domain
 block-detach        Destroy a domain's virtual block device
 uptime              Print uptime for all/some domains
 tmem-list           List tmem pools
 tmem-freeze         Freeze tmem pools
 tmem-destroy        Destroy tmem pools
 tmem-thaw           Thaw tmem pools
 tmem-set            Change tmem settings
 tmem-shared-auth    De/authenticate shared tmem pool
 tmem-freeable       Get information about how much freeable memory (MB) is in-use by tmem
 network2-attach     Create a new version 2 virtual network device
 network2-list       list version 2 virtual network interfaces for a domain
 network2-detach     destroy a domain's version 2 virtual network device
 cpupool-create      Create a CPU pool based an ConfigFile
 cpupool-list        List CPU pools on host
 cpupool-destroy     Deactivates a CPU pool
 cpupool-rename      Renames a CPU pool
 cpupool-cpu-add     Adds a CPU to a CPU pool
 cpupool-cpu-remove  Removes a CPU from a CPU pool
 cpupool-migrate     Moves a domain into a CPU pool
 cpupool-numa-split  Splits up the machine into one CPU pool per NUMA node