1.\" Copyright (c) 2018 Rick Macklem 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.Dd June 2, 2018 25.Dt PNFSDSCOPYMR 8 26.Os 27.Sh NAME 28.Nm pnfsdscopymr 29.Nd 30copy or move a data storage file for a MDS file to a different DS 31.Sh SYNOPSIS 32.Nm 33.Op Fl r Ar mounted-on-DS-dir 34.Op Fl m Ar source-mounted-on-DS-dir destination-mounted-on-DS-dir 35.Ar mdsfile 36.Sh DESCRIPTION 37The 38.Nm 39command copies a data storage file for an MDS file from one DS to another DS. 40It is normally used to recover data files onto a repaired DS, but can also 41be used to manually migrate a data storage file from one DS to a different one. 42By default, the command will copy the data storage file for 43.Dq mdsfile 44to one of the other DSs to create a mirror of it. 45This might be done if the file was created before mirroring was enabled on 46the pNFS service and now needs to be mirrored. 47.Pp 48The following options are available: 49.Bl -tag -width Ds 50.It Fl r Ar mounted-on-DS-dir 51This option indicates that the data storage file should be created on the DS 52that is mounted on the directory 53.Dq mounted-on-DS-dir . 54It will only do the copy if there is an entry in the pnfsd.dsfile extended 55attribute that has an IP address of 0.0.0.0. 56See 57.Xr pnfsdsfile 1 58for how to do this. 59This is normally done for all regular files via 60.Xr find 1 61in order to recover the data 62storage files onto a repaired DS. 63.It Fl m Ar source-mounted-on-DS-dir destination-mounted-on-DS-dir 64This option indicates that the data storage file is to be migrated from 65the source DS mounted on the directory 66.Dq source-mounted-on-DS-dir 67to the DS mounted on the directory 68.Dq destination-mounted-on-DS-dir . 69In this case, the data storage file will be removed from the source DS 70when the copy is completed. 71.El 72If the copy/migration is already done, the command will simply exit(0), 73so that it can safely be used on all regular files in the exported directory 74tree on the MDS. 75.Pp 76This command must be run on the MDS and a typical usage would be as an 77argument for 78.Xr find 1 79for all regular files. 80.sp 81For example, if the repaired DS is mounted on /data3 and files previously 82stored on the repaired DS have had the DS's IP address set to 0.0.0.0: 83.br 84# cd <top-level-exported-directory-on-the-MDS> 85.br 86# find . -type f -exec pnfsdscopymr -r /data3 {} \\; 87.Sh SEE ALSO 88.Xr find 1 , 89.Xr nfsv4 4 , 90.Xr pnfs 4 , 91.Xr nfsd 8 , 92.Xr pnfsdsfile 8 , 93.Xr pnfsdskill 8 94.Sh HISTORY 95The 96.Nm 97command first appeared in 98.Fx 12.0 . 99