Add a command that disables a pNFS server mirrored DS.
This command can be used by a sysadmin to disable a malfunctioning pNFS server mirrored DS. It is safe to use when a mirrored DS has already been disabled via an I/O or network partitioning error.
This commit is contained in:
Rick Macklem
parent
cfba8dec89
commit
b3cd498b58
6
usr.sbin/pnfsdskill/Makefile
Normal file
6
usr.sbin/pnfsdskill/Makefile
Normal file
@ -0,0 +1,6 @@
|
||||
# $FreeBSD$
|
||||
|
||||
PROG= pnfsdskill
|
||||
MAN= pnfsdskill.8
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
64
usr.sbin/pnfsdskill/pnfsdskill.8
Normal file
64
usr.sbin/pnfsdskill/pnfsdskill.8
Normal file
@ -0,0 +1,64 @@
|
||||
.\" Copyright (c) 2018 Rick Macklem
|
||||
.\"
|
||||
.\" 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.
|
||||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd March 9, 2018
|
||||
.Dt PNFSDSKILL 8
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm pnfsdskill
|
||||
.Nd
|
||||
disables a pNFS data storage server (DS)
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.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.
|
||||
.Pp
|
||||
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.
|
||||
.Pp
|
||||
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 appeared in FreeBSD12.
|
||||
76
usr.sbin/pnfsdskill/pnfsdskill.c
Normal file
76
usr.sbin/pnfsdskill/pnfsdskill.c
Normal file
@ -0,0 +1,76 @@
|
||||
/*-
|
||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
||||
*
|
||||
* Copyright (c) 2017 Rick Macklem
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <err.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <netdb.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/in.h>
|
||||
#include <nfs/nfssvc.h>
|
||||
|
||||
#include <fs/nfs/nfsproto.h>
|
||||
#include <fs/nfs/nfskpiport.h>
|
||||
#include <fs/nfs/nfs.h>
|
||||
|
||||
static void usage(void);
|
||||
|
||||
/*
|
||||
* This program disables use of a DS mirror. The "dspath" command line
|
||||
* argument must be an exact match for the mounted-on path of the DS.
|
||||
* It should be done before any forced dismount is performed on the path
|
||||
* and should work even when the mount point is hung.
|
||||
*/
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
struct nfsd_pnfsd_args pnfsdarg;
|
||||
|
||||
if (argc != 2)
|
||||
usage();
|
||||
if (geteuid() != 0)
|
||||
errx(1, "Must be run as root/su");
|
||||
|
||||
pnfsdarg.op = PNFSDOP_DELDSSERVER;
|
||||
pnfsdarg.dspath = argv[1];
|
||||
if (nfssvc(NFSSVC_PNFSDS, &pnfsdarg) < 0)
|
||||
err(1, "Can't kill %s", argv[1]);
|
||||
}
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
|
||||
fprintf(stderr, "pnfsdsfile [filepath]\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user