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PNFSDSCOPYMR(8) FreeBSD System Manager's Manual PNFSDSCOPYMR(8) NAME pnfsdscopymr -- copy or move a data storage file for a MDS file to a dif- ferent 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 mir- ror 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 cre- ated on the DS that is mounted on the directory "mounted-on-DS-dir". It will only do the copy if there is an en- try 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 nor- mally 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 mi- grated 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 com- pleted. 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 direc- tory 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 13.0 June 2, 2018 FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY
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