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Appendix A: Repairing EFS Filesystem ProblemsWith fsck
The fsck command checks EFS filesystem consistency and sometimes repairs problems that are found. It is not used on XFS filesystems. This appendix describes the messages that are produced by each phase of fsck, what they mean, and what you should do about each one.
The sections in this appendix are:
The following abbreviations are used in fsck error messages:
- BLK
- block number
- DUP
- duplicate block number
- DIR
- directory name
- MTIME
- time file was last modified
- UNREF
- unreferenced
The following sections use these single-letter abbreviations:
- B
- block number
- F
- file (or directory) name
- I
- inode number
- M
- file mode
- O
- user ID of a file's owner
- S
- file size
- T
- time file was last modified
- X
- link count, or number of BAD, DUP, or MISSING blocks, or number of files (depending on context)
- Y
- corrected link count number, or number of blocks in filesystem (depending on context)
- Z
- number of free blocks
In actual fsck output, these abbreviations are replaced by the appropriate numbers.
- Initialization Phase
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- General Errors
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- Phase 1 Check Blocks and Sizes
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- Phase 2 Check Pathnames
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- Phase 3 Check Connectivity
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- Phase 4 Check Reference Counts
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- Phase 5 Check Free List
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- Phase 6 Salvage Free List
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- Cleanup Phase
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