File Location and Reading

• LFS stores inodes in log

• inode-map indexes inodes

  • maps file-id to inodes
  • inode-map stored in log
  • fixed check-point region to find inode-maps

• FFS: inodes are at fixed location

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Inode: locates blocks of file, holds protection bits, modify time (ie attributes)

inodemap

contains position of inode in log + last access time and version no.