ubuntu中出现如下错误：

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/main/i18n/Translation-en  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en_US  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/multiverse/i18n/Translation-en  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en_US  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/restricted/i18n/Translation-en  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en_US  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en  Something wicked happened resolving 'cn.archive.ubuntu.com:http' (-5 - No address associated with hostname)

E: Some index files failed to download. They have been ignored, or old ones used instead.

解决办法：

在/etc/resolv.conf中加入DNS地址：

# Dynamic resolv.conf() file for glibc resolver() generated by resolvconf()

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

nameserver 172.16.10.1

-------------------------------------------------------------------------------------------------------

如下错误解决办法：Could not start storage pool: cannot open path '/var/lib/xen': No such file or directory

root@localhost:~# virt-install -n vm01 -r  -f /data/xen/vm01.img -l http://172.16.10.103/centos/

Starting install...

Retrieving file .treeinfo...                                                                                          |   B     : ...

Retrieving file vmlinuz...                                                                                            | 3.9 MB     : ...

Retrieving file initrd.img...                                                                                         |   MB     : ...

ERROR    Could not start storage pool: cannot open path '/var/lib/xen': No such file or directory

解决办法：

root@localhost:~# cd /var/lib/

root@localhost:/var/lib# ls

AccountsService  dbus                 initramfs-tools  logrotate       ocaml       rpm        udisks           usb_modeswitch  xml-core

apt              dhcp                 initscripts      misc            os-prober   samba      update-manager   usbutils

aptitude         dictionaries-common  insserv          mlocate         pam         sgml-base  update-notifier  vim

aspell           dpkg                 landscape        munin-node      php5        snmp       update-rc.d      xend

belocs           gconf                libuuid          mysql           plymouth    sudo       upower           xenstored

binfmts          gdm                  libvirt          NetworkManager  polkit-    synaptic   urandom          xfonts

colord           ghostscript          locales          ntpdate         pulseaudio  ucf        ureadahead       xkb

root@localhost:/var/lib# cp -r xend xen

**************************************************************************

ubuntu xen 错误： POST operation failed

cp -r /usr/share/qemu-linaro/ /usr/share/qemu

***************************************************************************

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