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External Snapshot managementSymptomAs of at least libvirt 1.1.1, external snapshot support is incomplete. For example, with 1.0.5 or later, an externa... 阅读全文
posted @ 2014-07-07 14:14
popsuper1982
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首先要创建一个bootable volumecurl -i http://16.158.166.197:8776/v1/c24c59846a7f44538d958e7548cc74a3/volumes -X POST -H "X-Auth-Project-Id: openstack" -H "Use... 阅读全文
posted @ 2014-07-06 19:49
popsuper1982
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http://tropicaldevel.wordpress.com/2013/07/15/quality-of-service-in-openstack/ In this post I will be exploring the current state of quality of service (QoS) in OpenStack. I will be looking at both wh... 阅读全文
posted @ 2014-07-04 15:26
popsuper1982
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前面讲了QEMU的qcow2格式的internal snapshot和external snapshot，这都是虚拟机文件格式的功能。 这是文件级别的。 还可以是文件系统级别的，比如很多文件系统支持snapshot，如OCFS2 还可以是block级别的，比如LVM支持snapshot 我们这节来分析openstack中各种snapshot的实现。 在Openstack中，Instance的启动大... 阅读全文
posted @ 2014-07-04 10:52
popsuper1982
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我们首先启动一台机器，启动的时候attach一个volume 创建一个空的cinder volume root:~# cinder create --display-name emptyvolume11g 11+---------------------+--------------------------------------+| Property | Value |+------------... 阅读全文
posted @ 2014-07-02 16:16
popsuper1982
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I was trying to understand what kind of image nova image-create creates. It’s not entirely obvious from its help output, which says — Creates a new image by taking a snapshot of a running server. But ... 阅读全文
posted @ 2014-07-02 08:46
popsuper1982
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AppArmor https://help.ubuntu.com/14.04/serverguide/apparmor.html AppArmor 是一个实施了基于名称强制存取控制的Linux安全模组。AppArmor 界定了单个程序进入一组文件列表的权限并遵循posix 1003.1e 草稿的能力。 默认情况下AppArmor已安装并载入。它使用每个程序的profiles来确定这个程序需要什么文... 阅读全文
posted @ 2014-07-01 12:44
popsuper1982
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Introduction to AppArmor http://ubuntuforums.org/showthread.php?t=1008906 Contents Post 1 Introduction (This is it). Post 2 AppArmor on Ubuntu. Post 3 Anatomy of a Profile. Post 4 Generating Profi... 阅读全文
posted @ 2014-07-01 12:43
popsuper1982
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RAW raw是默认的格式，格式简单，容易转换为其他的格式。需要文件系统的支持才能支持sparse file 创建image # qemu-img create -f raw flat.img 10GFormatting 'flat.img', fmt=raw size=10737418240 如果我们ls则看到 ls -lh flat.img -rw-r--r-- 1 root root 1... 阅读全文
posted @ 2014-07-01 10:04
popsuper1982
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http://kashyapc.com/2011/10/04/snapshotting-with-libvirt-for-qcow2-images/ Libvirt 0.9.6 was recently out. Take a look at 0.9.5 changelog for truckload of features/bugfixes/cleanups(specifically snaps... 阅读全文
posted @ 2014-06-30 09:43
popsuper1982
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