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           xfs_metadump [ -efgow ] [ -l logdev ] source target


           xfs_metadump  is  a debugging tool that copies the metadata from an XFS
           filesystem to a file.  The source argument must be the pathname of  the
           device  or  file  containing the XFS filesystem and the target argument
           specifies the destination file name.  If target is -, then  the  output
           is  sent  to stdout. This allows the output to be redirected to another
           program such as a compression application.
           xfs_metadump should only be used to copy unmounted  filesystems,  read-
           only  mounted  filesystems,  or frozen filesystems (see xfs_freeze(8)).
           Otherwise, the generated dump could be inconsistent or corrupt.
           xfs_metadump does not alter the source filesystem in any way. The  tar-
           get image is a contiguous (non-sparse) file containing all the filesys-
           tem's metadata and indexes to where the blocks were copied from.
           By default, xfs_metadump obfuscates most file (regular file,  directory
           and  symbolic  link)  names  and  extended attribute names to allow the
           dumps to be sent without revealing confidential  information.  Extended
           attribute  values are zeroed and no data is copied. The only exceptions
           are file or attribute names that are 4 or less  characters  in  length.
           Also  file  names  that  span  extents  (this  can  only occur with the
           mkfs.xfs(8) options where -n size > -b size) are not obfuscated.  Names
           between  5  and 8 characters in length inclusively are partially obfus-
           xfs_metadump should not be used for any purposes other than for  debug-
           ging  and reporting filesystem problems. The most common usage scenario
           for this tool is when xfs_repair(8) fails to repair a filesystem and  a
           metadump image can be sent for analysis.
           The  file generated by xfs_metadump can be restored to filesystem image
           (minus the data) using the xfs_mdrestore(8) tool.


           -e     Stops the dump on a read error. Normally, it  will  ignore  read
                  errors and copy all the metadata that is accessible.
           -f     Specifies that the filesystem image to be processed is stored in
                  a regular file (see the mkfs.xfs -d file option). This can  also
                  happen  if  an  image copy of a filesystem has been made into an
                  ordinary file with xfs_copy(8).
           -g     Shows dump progress. This is sent to stdout if the target  is  a
                  file or to stderr if the target is stdout.
           -l logdev
                  For  filesystems  which  use an external log, this specifies the
           As xfs_metadump copies metadata only, it does not matter if the  source
           filesystem  has  a  realtime  section  or not. If the filesystem has an
           external log, it is not copied. Internal logs are copied and  any  out-
           standing log transactions are not obfuscated if they contain names.
           xfs_metadump  is a shell wrapper around the xfs_db(8) metadump command.


           xfs_repair(8), xfs_mdrestore(8), xfs_freeze(8), xfs_db(8), xfs_copy(8),


           Email bug reports to

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