Copyright (c) 2018 Rick Macklem
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.Dd July 9, 2018 .Dt PNFSDSKILL 8 .Os .Sh NAME .Nm pnfsdskill .Nd disables a pNFS data storage server (DS) .Sh SYNOPSIS .Nm .Op Fl f .Ar mounted-on-DS-dir .Sh DESCRIPTION The .Nm command disables one DS when mirroring is enabled. If one mirrored DS is malfunctioning, a system administrator may use this command on the metadata server (MDS) to disable use of this mirror. This command must be used on the MDS and the .Ar mounted-on-DS-dir must be the exact pathname used when mounting the DS on the MDS. Normally this command will fail if there is no valid mirror for the DS available.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd July 9, 2018 .Dt PNFSDSKILL 8 .Os .Sh NAME .Nm pnfsdskill .Nd disables a pNFS data storage server (DS) .Sh SYNOPSIS .Nm .Op Fl f .Ar mounted-on-DS-dir .Sh DESCRIPTION The .Nm command disables one DS when mirroring is enabled. If one mirrored DS is malfunctioning, a system administrator may use this command on the metadata server (MDS) to disable use of this mirror. This command must be used on the MDS and the .Ar mounted-on-DS-dir must be the exact pathname used when mounting the DS on the MDS. Normally this command will fail if there is no valid mirror for the DS available.
p The following option is available: l -tag -width Ds t Fl f This option forces the DS to be disabled even if there is no valid mirror for the DS available. It should only be used to allow the .Xr nfsd 8 threads to be terminated. .El
p If this command fails with .Dq Device not configured (ENXIO), it probably means that the DS has already been disabled due to an error either detected by the MDS or reported to the MDS by a client.
p The pNFS service should continue to run normally so long as the number of operational DSs is at least as many as the level of mirroring. .El .Sh SEE ALSO .Xr nfsv4 4 , .Xr pnfs 4 , .Xr nfsd 8 , .Xr pnfsdscopymr 8 , .Xr pnfsdsfile 8 .Sh HISTORY The .Nm command first appeared in .Fx 12.0 .