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