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每一个分区都包含一个磁道组信息。根分区也不例外,根分区的CGB里面也包含了根分区的inodes数据,其中包含了根的inode编号。
Cylinder Group Blocks
The cylinder group block is a table in each cylinder group that describes
the cylinder group, including:
l The number of inodes
l The number of data blocks in the cylinder group
l The number of directories
l Free blocks, free inodes, and free fragments in the cylinder group
l The free block map
l The used inode map
Figure 4-4 shows a series of cylinder groups in a ufs file system
这个信息放在磁盘的backup super block的后面,从第33个扇区开始,占用多少个扇区就不知道了。 |
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