- Timestamp:
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02/23/10 06:10:50 (14 years ago)
- Author:
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ChrisJohns
- Comment:
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Legend:
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12 | | The RFS file system consists of superblock at the start followed by a series of groups. A group is a group of blocks. |
| 12 | The RFS file system consists of superblock at the start followed by a series of groups. A group is a group of blocks and exists to keep the bitmaps in a group to a file block size plus to also help localise blocks and inodes. |
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14 | 14 | <blockquote> |
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38 | 38 | </blockquote> |
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40 | | The block bitmap contains a single bit for every block in a group. The default format is to allocate the size of a group based on the number of bits that fit into a single block. For example a block of 1024 bytes has 8,192 bits therefore a group can have 8192 blocks including the block bitmap block. The inode bitmap has a bit for ever inode in the group. An inode is the information about a node on the disk. A node is the data that links the elements of the disk together to create directories, files, and nodes. The number of inodes in a group is format configuration parameter. The default is use 1% of the disk's blocks for inode data. Again with a 1024 byte block size there are 18 inodes per block and 1448 inodes per group. |
| 40 | The block bitmap contains a single bit for every block in a group. The default format is to allocate the size of a group based on the number of bits that fit into a single block. For example a block of 1024 bytes has 8,192 bits therefore a group can have 8192 blocks including the block bitmap block. The inode bitmap has a bit for ever inode in the group. An inode is the information about a node on the disk. A node is the data that links the elements of the disk together to create directories, files, and nodes as well as hold times and flags. The number of inodes in a group is a format configuration parameter. The default is use 1% of the disk's blocks for inode data. Again with a 1024 byte block size there are 18 inodes per block and 1448 inodes per group. Inodes do not span block boundaries. |
41 | 41 | = Using the RFS = |
42 | 42 | |