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
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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
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ubuntu xen 错误： POST operation failed
cp -r /usr/share/qemu-linaro/ /usr/share/qemu
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