EMC前五块盘肚子里东西很多……正所谓有容乃大，所以33G也是正常（以前才几个G，现在这么大，汗~） 这个是CX的，更详细，Fyr 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/66684/showart_1082616.html

journaling filesystems come with a big promise: they free system administrators from the need to worry about disk corruption resulting from system crashes. It is, in fact, not even necessary to run a filesystem integrity checker in such situations. The real world, of course, is a little messier than that. As a recent discussion shows, it may be even messier than many of us thought, with the integr...

Linux: The journaling Block Device June 21, 2006 - 2:40am Submitted by Kedar Sovani --> Submitted by Kedar Sovani on June 21, 2006 - 2:40am. Atomicity is a property of an operation either to succeed or fail completely. Disks assure atomicity at the sector level. This means that a write to a sector either goes through completely or not at a...

[译文] Linux: The journaling Block Device #blog_post_content img{max-width:100%} #blog_post_content {line-height: 1.8em } #blog_post_content font {line-height: normal } #blog_post_content p { margin: 1.12em 0} June 21, 2006 - 2:40am Submitted by Kedar Sovani on June 21, 2006 - 2:40am. http://kerneltrap.org/node/6741 原作者与版权信息： Amey Inamda...

斑竹你好 我在用fdfs_test测试文件上传后，会生成相关的metadata文件，但是这个medadata文件除了文件名不一样，怎么内容都一样呢？ 另外如果我用fdfs_upload_file命令上传的话，怎么就没有相关的metadata文件呢？ 请斑竹解释一下相关的metadata文件的操作好吗？

GIF Image metadata Format Specification The GIF image metadata format encodes the image descriptor, local color table, and extension information assciated with a single image within a GIF file, typically a frame of an animation. The image description contains the offset of the frame within the logical screen described in the stream metadata, as well as the width and height of the frame and whe...

Understanding JDBC metadata Kyle Brown In the previous article in this series we stopped in the middle of building a set of classes that comprise a vendor-independent tool for maintaining database schemas. We had just introduced the concept of metadata, and looked at how having an object representation of a set of database tables and columns can make it possible to modify and maintain them in a...

今天上午，断网状态。在KDE下拷贝iso文件，当时启用 SoftUpdates 的分区在相对外道，journaling 的在内道。KDE 显示启用 journaling 的速度很不稳定，最低到了 3M/s，而 SoftUpdates 一直保持在 33M/s。总体感觉是 journaling 速度只有 SoftUpdates 一半左右。 今天晚上，断网状态。在不启动 X 的情况下进行如下测试，不知道科学否，贴出来让大家看看，点评点评。重新调整了两分区顺序，这次 journaling 分区在外道，SoftUpdates 分...

NetBSD-current 今天提交了一份UFS文件系统的journaling实现-- WAPBL。该日志系统的实现由wassabi公司捐赠。 NetBSD邮件列表上曾经有争论是否用以替换UFS的soft update功能，以简化UFS文件系统的复杂度。 BSD社区里越来越多的文件系统和功能被实现或移植，可以同时关注dragonflybsd2.0发布的hammer filesystem和freebsd上的zfs。 [ 本帖最后由 gvim 于 2008-8-1 17:06 编辑 ]

　　当商家们谈论元数据驱动的存储时，总是离不开"存储虚拟化"这个名词。商家会告诉你，取决于特定元数据的应用目标，存储虚拟化的好处可以含概从：修复性能的提高到检索能力再到易管性，以及在硬件水平上对异构环境的适应性等一个或多个领域。 　　投资回报理论上对最终用户和被分派设计管理企业存储的人员来说都提高了生产力。而存储虚拟化能带来容量最优化，从而节省硬件投资。 　　一般而言，将元数据应用到一项技术中，意味...

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