Index for Section 8

Alphabetical listing for V

verify(8)
NAME
  verify - checks the AdvFS on-disk metadata structures

SYNOPSIS
  /sbin/advfs/verify [-f|-d] [-v|-q] [-t] [-r] [-F] domain_name

OPTIONS
  -f  Creates a hard link to "fix" a lost file in the /???/lost+found
      directory; deletes any directory entries that do not have associated
      files; deletes files that have storage bitmap or extent map problems;
      corrects inconsistencies in the storage bitmap.

  -d  Deletes lost files (that is, files with no directory entry).

  -v  Prints file status information. Selecting this option slows down the
      verify procedure.

  -q  Prints minimal file status information.

  -t  Displays the mcell totals.

  -r  Checks the root domain.

  -F  Mounts the filesets of a file domain using the mount -d option if there
      is a mount failure of the file domain. Use this option with caution.

OPERANDS
  domain_name
      Specifies the file domain.

DESCRIPTION
  The verify command checks on-disk structures such as the bitfile metadata
  table (BMT), the storage bitmaps, the tag directory and the frag file for
  each fileset. It verifies that the directory structure is correct and that
  all directory entries reference a valid file (tag) and that all files
  (tags) have a directory entry.

  The verify command checks the storage bitmap for double allocations and
  missing storage. It checks that all mcells in use belong to a bitfile and
  that all bitfiles have all of their mcells.

  The verify command checks the consistency of free lists for mcells and tag
  directories. It checks that the mcells pointed to by tags in the tag
  directory match the corresponding mcells.

  For each fileset in the specified file domain, the verify command checks
  the frag file headers for consistency. For each file that has a fragment,
  the frag file is checked to ensure that the frag is marked as in use.







RESTRICTIONS
  You must be the root user to use this command.

  Unless you are checking the root domain, all filesets in the file domain
  must be unmounted. The verify command automatically mounts all of the
  filesets in a file domain individually. If you choose the -r option when
  you run the verify command on the root domain, all filesets in the root
  domain must be mounted.

  Run the verify command on /root and /usr from a single-user mode. To run
  the verify command in single-user mode, you must first run a mount update
  on the root (mount -u /). To run the command from multi-user mode, dismount
  any file system that you have mounted as /root or /usr and make sure there
  is no file activity.

  If you run the verify command on a fileset that has any other file system
  (AdvFS or otherwise) mounted on it, an error results.	 If you have an
  fileset erroneously labeled as UFS and it overlaps a fileset labeled AdvFS,
  an error results.  You can recover from this error by changing the
  erroneously-labeled fileset's fstype field from ufs to unused with the
  disklabel -s command.	 After changing the disk label, run the verify
  command.

  If the -F option is specified and the verify command is unable to mount a
  fileset due to a failure of the file domain, the fileset is mounted using
  the mount -d option. Use this option with extreme caution and only as a
  last resort when you cannot mount a fileset. The mount -d option mounts an
  AdvFS fileset without running recovery on the file domain. Mounting without
  running recovery will cause your file domain to be inconsistent.

  If you use the -F option, the verify command starts some recovery on the
  file domain before you mount it.

EXIT STATUS
  The verify utility returns a 0 (zero) on success if it did not find any
  corruption and a positive integer on succes if it did find any corruption.
  The verify utility returns a -1 on failure.

EXAMPLES
  The following example verifies the file domain dmnx with the filesets setx
  and sety:

       # /sbin/advfs/verify dmnx

       +++ Domain verification +++

       Domain Id 2f9eb70a.000f1db0

       Checking disks ...

       Checking storage allocated on disk /dev/rz10g

       Checking storage allocated on disk /dev/rz10a

       Checking mcell list ...

       Checking mcell position field ...

       Checking tag directories ...

       +++ Fileset verification +++

       +++ Fileset setx +++

       Checking frag file headers ...

       Checking frag file type lists ...

       Scanning directories and files ...
	    300
       Scanned 307 directories.

       Scanning tags ...
	    1100
       Scanned a total of 1135 tags.

       Searching for lost files ...
	    1100
       Searched 1135 tags, no lost files found.

       +++ Fileset sety +++

       Checking frag file headers ...

       Checking frag file type lists ...

       Scanning directories and files ...
	    900
       Scanned 911 directories.

       Scanning tags ...
	    5100
       Scanned a total of 5173 tags.

       Searching for lost files ...
	    5100
       Searched 5173 tags, no lost files found.
       #

FILES
  /sbin/advfs/verify
      Specifies the command path.

SEE ALSO
  advfs(4), fsck(8)