PNFSDSCOPYMR(8)         FreeBSD System Manager's Manual        PNFSDSCOPYMR(8)

NAME
     pnfsdscopymr - copy or move a data storage file for a MDS file to a
     different DS

SYNOPSIS
     pnfsdscopymr [-r mounted-on-DS-dir]
                  [-m source-mounted-on-DS-dir destination-mounted-on-DS-dir]
                  mdsfile

DESCRIPTION
     The pnfsdscopymr command copies a data storage file for an MDS file from
     one DS to another DS.  It is normally used to recover data files onto a
     repaired DS, but can also be used to manually migrate a data storage file
     from one DS to a different one.  By default, the command will copy the
     data storage file for "mdsfile" to one of the other DSs to create a
     mirror of it.  This might be done if the file was created before
     mirroring was enabled on the pNFS service and now needs to be mirrored.

     The following options are available:

     -r mounted-on-DS-dir
             This option indicates that the data storage file should be
             created on the DS that is mounted on the directory
             "mounted-on-DS-dir".  It will only do the copy if there is an
             entry in the pnfsd.dsfile extended attribute that has an IP
             address of 0.0.0.0.  See pnfsdsfile(1) for how to do this.  This
             is normally done for all regular files via find(1) in order to
             recover the data storage files onto a repaired DS.

     -m source-mounted-on-DS-dir destination-mounted-on-DS-dir
             This option indicates that the data storage file is to be
             migrated from the source DS mounted on the diectory
             "source-mounted-on-DS-dir" to the DS mounted on the directory
             "destination-mounted-on-DS-dir".  In this case, the data storage
             file will be removed from the source DS when the copy is
             completed.
     If the copy/migration is already done, the command will simply exit(0),
     so that it can safely be used on all regular files in the exported
     directory tree on the MDS.

     This command must be run on the MDS and a typical usage would be as an
     argument for find(1) for all regular files.

     For example, if the repaired DS is mounted on /data3 and files previously
     stored on the repaired DS have had the DS's IP address set to 0.0.0.0:
     # cd <top-level-exported-directory-on-the-MDS>
     # find . -type f -exec pnfsdscopymr -r /data3 {} \;

SEE ALSO
     find(1), nfsv4(4), pnfs(4), nfsd(8), pnfsdsfile(8), pnfsdskill(8)

HISTORY
     The pnfsdscopymr command first appeared in FreeBSD 12.0.

FreeBSD 13.1-RELEASE-p6          June 2, 2018          FreeBSD 13.1-RELEASE-p6