fsck_s5 Phase 4: Check Reference Counts

This phase checks the link count information obtained in Phases 2 and 3. It reports error conditions resulting from:

• unreferenced files

• a missing or full lost+found directory

• incorrect link counts for files, directories, or special files

• unreferenced files and directories

• bad or duplicate blocks in files and directories

• incorrect total free-inode counts

Types of error messages--fsck_s5 Phase 4

Phase 4 has five types of error messages:

• Informational messages.

• Messages with a RECONNECT? prompt, which can be responded to as follows:

  
  n (no)

  Ignore this error condition. This response generates a CLEAR error message later in Phase 4.

  
  y (yes)

  Reconnect inode I to the filesystem in the directory for lost files (usually the lost+found directory). This can generate a lost+found error message in this phase if there are problems connecting inode I to the lost+found directory.

• Messages with a CLEAR? prompt, which can be responded to as follows:

  
  n (no)

  Ignore the error condition. This response is appropriate only if the user intends to take other measures to fix the problem.

  
  y (yes)

  Deallocate the inode by zeroing out its contents.

• Messages with an ADJUST? prompt, which can be responded to as follows:

  
  n (no)

  Ignore the error condition. This response is appropriate only if the user intends to take other measures to fix the problem.

  
  y (yes)

  Replace the link count of file inode I by Y.

• Messages with a FIX? prompt, which can be responded to as follows:

  
  n (no)

  Ignore the error condition. This response is appropriate only if the user intends to take other measures to fix the problem.

  
  y (yes)

  Replace the count in superblock by the actual count.

fsck_s5 Phase 4 error messages

UNREF FILE I=I OWNER=O MODE=M SIZE=S MTIME=T

(RECONNECT?)

Inode I was not connected to a directory entry when the filesystem was traversed. The owner O, mode M, size S, and modify time T of inode I are printed. If the -n option is omitted and the filesystem is not mounted, empty files are cleared automatically.

Non-empty files are not cleared. If the -p option is specified the inode is reconnected.

SORRY. NO lost+found DIRECTORY

There is no lost+found directory in the root directory of the filesystem; fsck ignores the request to link a file to the lost+found directory. This generates the CLEAR error message later in Phase 4. The access modes of the lost+found directory might be incorrect.

SORRY. NO SPACE IN lost+found DIRECTORY

There is no space to add another entry to the lost+found directory in the root directory of the filesystem; fsck ignores the request to link a file to the lost+found directory. This generates the CLEAR error message later in Phase 4. Check the size and contents of the lost+found directory.

(CLEAR)

The inode mentioned in the UNREF error message immediately preceding cannot be reconnected.

LINK COUNT FILE I=I OWNER=O MODE=M SIZE=S MTIME=T COUNT=X

SHOULD BE Y (ADJUST?)

The link count for file inode I is X but should be Y. The owner O, mode M, size S, and modify time T are printed. If the -p option is specified the link count is adjusted.

LINK COUNT DIR I=I OWNER=O MODE=M SIZE=S MTIME=T COUNT=X

SHOULD BE Y (ADJUST?)

The link count for directory inode I is X but should be Y. The owner O, mode M, size S, and modify time T of inode I are printed. If the -p option is specified the link count is adjusted.

UNREF FILE I=I OWNER=O MODE=M SIZE=S MTIME=T (CLEAR?)

File inode I was not connected to a directory entry when the filesystem was traversed. The owner O, mode M, size S, and modify time T of inode I are printed. If the -n option is omitted and the filesystem is not mounted, empty files are cleared automatically. Non-empty directories are not cleared. If the -p option is specified the file is cleared if it cannot be reconnected.

UNREF DIR I=I OWNER=O MODE=M SIZE=S MTIME=T (CLEAR?)

Directory inode I was not connected to a directory entry when the filesystem was traversed. The owner O, mode M, size S, and modify time T of inode I are printed. If the n option is omitted and the filesystem is not mounted, empty directories are cleared automatically. Non-empty directories are not cleared. If the -p option is specified the directory is cleared if it can not be reconnected.

BAD/DUP FILE I=I OWNER=O MODE=M SIZE=S MTIME=T (CLEAR?)

Phase 1 or Phase 1B found duplicate blocks or bad blocks associated with file inode I. The owner O, mode M, size S, and modify time T of inode I are printed. If the -p option is specified the file is cleared.

BAD/DUP DIR I=I OWNER=O MODE=M SIZE=S MTIME=T (CLEAR?)

Phase 1 or Phase 1B found duplicate blocks or bad blocks associated with directory inode I. The owner O, mode M, size S, and modify time T of inode I are printed. If the -p option is specified the directory is cleared.

FREE INODE COUNT WRONG IN SUPERBLK (FIX?)

The actual count of the free inodes does not match the count in the superblock of the filesystem. If the -q or -p option is specified, the count in the superblock will be fixed automatically.