Fsck − The unix† File System Check Program



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3.6. Inode data size
Each inode contains a count of the number of data blocks that it contains. The number of actual data blocks is the sum of the allocated data blocks and the indirect blocks. Fsck computes the actual number of data blocks and compares that block count against the actual number of blocks the inode claims. If an inode contains an incorrect count fsck prompts the operator to fix it.
Each inode contains a thirty-two bit size field. The size is the number of data bytes in the file associated with the inode. The consistency of the byte size field is roughly checked by computing from the size
field the maximum number of blocks that should be associated with the inode, and comparing that expected block count against the actual number of blocks the inode claims.


Fsck − the unix file system check program
Table of contents
Can’t stat fcan’t make sense out of name
Impossible minfree=
Magic number wrong
Can not read blk
Partially truncated inode
Link count table overflow (continue)
Excessive bad blks
Bad state ddd to blkerr
Partially allocated inode i=
Root inode unallocated (allocate)
Cannot allocate root inode
I out of range i=
Zero length directory i=
Directory corrupted i=
Missing ‘.’ i=
Extra ‘.’ entry i=
Missing ‘..’ i=
Extra ‘..’ entry i=
Bad state s for root inode
No lost+found directory (create)
Sorry. cannot create lost+found directory
Sorry. no space in lost+found directory
Directory f length
Unref file i=
No space left in /lost+found (expand)
Link count type i=


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