XenServer使用ISO安装VM    首先，登入console，执行以下指令，建立iso档型式的储存库(SR - Storage Repositories)    mkdir /boot-iso    xe sr-create name-label=boot-iso type=iso device-config:location=/boot-iso device-config:legacy_mode=true content-type=iso    上传那些iso档至主机的/boot-iso即可。    新增成功，在XenCenter会出现一个项目 

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 XenServer服务器，时间是没有调整好的，我们需要自己设置下，设置为亚洲，上海时间第一种办法，命令： [root@cl-535 ~]# dateWed Jun 27 23:38:56 EDT 2012[root@cl-535 ~]# ls -l /etc/localtimelrwxrwxrwx 1 root root 36 Mar  9  2011 /etc/localtime -> /usr/share/zoneinfo/Ame[root@cl-535 ~]# mv /etc/localtime /etc/localtime.bak[root@cl-535 ~]# ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime[root@cl-535 ~]# ls -l /etc/localtimelrwxrwxrwx 1 root root 33 Jun 28 12:01 /etc/localtime -> /usr/share/zoneinfo/Asia/Shanghai[root@cl-535 ~]# dateThu Jun 28 12:02:02 CST 2012复制代码接着设置时间同步服务器： vi /etc/ntp.conf复制代码找到以下的参数，并删除server 0.xenserver.pool.ntp.orgserver 1.xenserver.pool.ntp.orgserver 2.xenserver.pool.ntp.orgserver 3.xenserver.pool.ntp.org在最下面添加一个时间服务器: pool.ntp.org复制代码第二种办法，进入XenServer控制台修改： xsconsole复制代码需要修改的有2处：1，Network and Management Interface -- Network Time (NTP) -- Remove All NTP Server...

XenServer更新补丁后因内核改变，驱动失效的解决方案 现象缘由：以Intel主板的网卡IGB为例，由于服务器的硬件较新，XenServer 5.6 SP2没有内置驱动，需要加载额外的驱动才能安装，系统安装完成后，通过XenCenter更新服务器补丁，重启服务器后无法连接，马上使用IPMI登陆服务器，发现新的补丁升级了内核，如图所示：打补丁前，内核是：xs5.6.100.323打补丁后，内核是：xs5.6.100.327分析原因：XenServer系统的内核发生了改变，旧的驱动无法兼容。解决方法，更新驱动：将xs5.6.100.327相兼容的网卡驱动ISO通过IPMI挂载为虚拟光驱，然后mount挂载到服务器，安装xs5.6.100.327更新驱动即可。步骤一:登录IPMI并且挂载xs5.6.100.327驱动ISO镜像。选择xs5.6.100.327.iso镜像点击"Plug in",挂载到光驱即可。步骤二：运用mount命令挂载ISO cd /mntmkdir xenserver-toolsmount /dev/cdrom /mnt/xenserver-tools/复制代码安装驱动 cd xenserver-tools./install.sh复制代码更新完xs5.6.100.327驱动之后，重启下服务器即可。

 在XenServer的centos中，无法修改时间的解决方案！  echo 1 > /proc/sys/xen/independent_wallclockdate -s "2012-07-21 10:35:00" 修改时区rm -rf /etc/localtimeln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime修改/etc/sysconfig/clock文件的内容为： ZONE="Asia/Shanghai" UTC=false ARC=false

 How to Disable Receive-Side Copy (RSC) on XenServer 6.x Document ID: CTX133199   /   Created On: 2012-6-29   /   Updated On: 2013-7-23 Average Rating: (2 ratings) <!-- -->View products this document applies to SummaryThis article describes how to disable the Receive-Side Copy on XenServer 6.xRequirementsAccess to Windows Virtual Machine and Registry EditorAccess to XenServer command line interface to monitor logsBackgroundIn XenServer 6.x, a new feature called Receive-Side Copy (RSC) is enabled by default in Windows virtual machines with XenTools installed.RSC moves the processing required for network traffic from Domain 0 (netback process) into the virtual machine (netfront process) thereby reducing the load on the control domain when you run large numbers of virtual machines.In some scenarios, you might have to disable this feature to improve the virtual machine performance.Known IssueWith RSC enabled, a virtual machine virtu...

 How to Disable Receive-Side Copy (RSC) in Dom0 Document ID: CTX136830   /   Created On: 2013-3-7   /   Updated On: 2013-7-23 Average Rating: (2 ratings) <!-- -->View products this document applies to SummaryThis article describes how to disable Receive-Side Copy in dom0.Receive-Side Copy (RSC) might cause exhaustion of dom0 pageref resources. This might lead to undesirable behavior under certain circumstances.RequirementsRSC as the default network back end.BackgroundBy default, xen_netback.netback_max_rx_protocol is set to 1, which enables RSC host wide.ProcedureRun the following command: #/opt/xensource/libexec/xen-cmdline --set-dom0 xen_netback.netback_max_rx_protocol=0Restart the server for the change to take effect.Confirm that the change has been implemented: # cat /proc/cmdlineroot=LABEL=root-cbscvkzh ro console=tty0 xencons=hvc console=hvc0 xen_netback.netback_max_rx_protocol=0Throughput should not be adversely affected ...

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