Linux内核精髓绝技hack ext4-阿里云

《Linux内核精髓：精通Linux内核必会的75个绝技》一HACK #19　ext4的调整 HACK #19　ext4的调整本节介绍可以从用户空间执行的ext4调整。ext4在sysfs中有一些关于调整的特殊文件（见表3-6）。使用这些特殊文件，就不用进行内核编译、重启，直接从用户空间确认、更改内核空间的设置参数。表3-6　sysfs中的ext4文件 /sys/fs/ext4/<设...

《Linux内核精髓：精通Linux内核必会的75个绝技》一HACK #18　向ext4转换 HACK #18　向ext4转换 ext4可以与ext2/ext3在后台进行互换。这里将介绍从ext2/ext3转换的方法以及转换时的注意事项。转换有两种方法可以将ext2/ext3的磁盘映像作为ext4来使用。1.直接作为ext4挂接执行下列命令，就可以将ext2/ext3的磁盘映像/dev/sd...

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《Linux内核精髓：精通Linux内核必会的75个绝技》一HACK #17　如何使用ext4 HACK #17　如何使用ext4 本节介绍ext4的编写和挂载方法、开发版ext4的使用方法。ext4是ext3的后续文件系统，从Linux 2.6.19开始使用。现在主要的发布版中多数都是采用ext4作为标准文件系统。除了间接参照块管理以外，ext4还以扩展形式支持块的管理，使其能够处理更大的文...

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