How to mount a xen image ?

How to mount a xen image ?

  1. First you need to find out the partitions and the startsector of partitions: [root@xen rruban]# file rheltest.img rheltest.img: x86 boot sector, GRand Unified Bootloader (0.94); partition 1: ID=0x83, active, starthead 1, startsector 63, 208782 sectors; partition 2: ID=0x8e, starthead 0, startsector 208845, 3871665 sectors, code offset 0x48 There are 3 partitions inside the image file. The startsector of each partition is also listed. Boot partition will have start sector 63.
  2. Now you need to get the sector size: [root@xen]fdisk -lu rheltest.img

Disk rheltest.img: 0 MB, 0 bytes 255 heads, 63 sectors/track, 0 cylinders, total 0 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System rheltest.img1 * 63 208844 104391 83 Linux rheltest.img2 208845 4080509 1935832+ 8e Linux LVM The above shows the sector byte size is 512 byte.

  1. To calculating the offset: offset = startsector x sectorbyte_size. The startsector is 63 for the first partition, therefore the first partition offset is: 63x512=32256
  2. Finally, to mount the xen image, use: mount -o loop,offset=32256 test.img /foldername
文章分类
标签云
Gray, Public, 灰度发布, 灰度放量, ABTest, AB测试, 分流发布 CentOS, Linux, Shell Mac, Shell, Vim Linux SSH Mac Mail MacOSX 命令 MySQL, 调优 Apache, HTTP, ngnix MySQL gif, jpeg, png Markdown CentOS PHP, WordPress, Blog AsciiDoc, mod_deflat sudo Leopard, Snow Leopard Apache Nginx, 木马 hostname, upload md5, md5sum, DNS 版本 Cookie, PHP Chrome DooPHP, CSS Filter IT Java, Maven, Thrift Git Memcache MongoDB Node Node.js npm HTML Nginx JDK, Sublime Timestamp Lua, Redis, MacOSX, Class, Function Sublime, Snippets ObjC Cobar, Bash Brew, Homebrew AsciiDoc Error Yii MacOSX,Hadoop,MapReduce memcache, Markdown, Jekyll VIM Go, Golang, Redis MacTeX, CJK, Tex Tex, LaTex R, Brew Android, Java EC Mou GoAgentX, GoAgent Python HBase Markdown,Slide Jenv kerberos Junit Maven 虚拟化 LXC Docker bridge AngularJS PHPUnit Android composer Golang ReactNative, 项目管理 MAMP, Memcache, SecureCRT, Zoc, Mail, GPG Docker, Supervisor Test Retail Pay