mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-24 17:44:17 +01:00
144 lines
5.0 KiB
Groff
144 lines
5.0 KiB
Groff
.\" 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.
|
|
.\"
|
|
.Dd June 30, 2018
|
|
.Dt PNFSDSFILE 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm pnfsdsfile
|
|
.Nd display
|
|
a pNFS data storage file's location(s) and/or modify the
|
|
.Dq pnfsd.dsfile
|
|
extended attribute for them
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl qz
|
|
.Op Fl s Ar dshostname
|
|
.Op Fl c Ar old-dshostname,new-dshostname
|
|
.Op Fl m Ar mirror_level
|
|
.Op Fl r Ar dshostname
|
|
.Ar mdsfile
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command displays the data storage file's location(s) for a pNFS service and/or
|
|
modifies the
|
|
.Dq pnfsd.dsfile
|
|
extended attribute on the
|
|
.Ar mdsfile .
|
|
A pNFS service maintains a data storage file for each regular file on
|
|
the MetaData Server (MDS) on one or more of the Data Servers (DS).
|
|
If mirroring is enabled, the data storage file will be on more that one of the DSs.
|
|
Unless command options are specified, this command displays the location(s)
|
|
of the data storage file for the MDS file
|
|
.Ar mdsfile .
|
|
It must be used on the MDS and the
|
|
.Ar mdsfile
|
|
must be a file on the exported local file system and not an NFSv4.1 mount.
|
|
This information is stored in the
|
|
.Dq pnfsd.dsfile
|
|
extended attribute for this
|
|
.Ar mdsfile .
|
|
The command line options allow the information in the
|
|
.Dq pnfsd.dsfile
|
|
extended attribute to be changed.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width Ds
|
|
.It Fl q
|
|
This option suppresses printing of the DS file's location(s).
|
|
.It Fl z
|
|
This option specifies that the file handle field of the pnfsd.dsfile
|
|
extended attribute is to filled with all zero bits.
|
|
This forces the pNFS MDS to do a Lookup RPC against the DS to acquire the file
|
|
handle to update it.
|
|
Normally this will only be necessary after the DS file has been recovered
|
|
from a backup, causing the file handle to change.
|
|
.It Fl s Ar dshostname
|
|
This option can be used with
|
|
.Fl z
|
|
so that the zeroing out of the file handle is only done if the DS server
|
|
is the one specified by this option.
|
|
.It Fl c Ar old-dshostname,new-dshostname
|
|
This option allows a sysadmin to replace the host IP# for the DS in the
|
|
pnfsd.dsfile extended attribute.
|
|
The old-hostname must resolve to the IP# already in the pnfsd.dsfile extended
|
|
attribute or the replacement will not be done.
|
|
If the old-dshostname matches, then the IP# is replaced by the first AF_INET
|
|
or AF_INET6 address that
|
|
.Xr getaddrinfo 3
|
|
returns for the new-dshostname.
|
|
Changing a DS server's host IP# should be avoided, but this option will
|
|
allow it to be changed, if the change is unavoidable.
|
|
.It Fl m Ar mirror_level
|
|
This option adds entrie(s) to the extended attributes with IP address set
|
|
to 0.0.0.0 to bring the number of entries up to
|
|
.Dq mirror_level .
|
|
It can be used by a system administrator to prepare a file for mirroring
|
|
via the
|
|
.Xr pnfsdscopymr
|
|
command with
|
|
.Fl r
|
|
option.
|
|
.It Fl r Ar dshostname
|
|
This option sets the IP address of the extended attribute entry for the
|
|
.Ar dshostname
|
|
to 0.0.0.0 so that it will no longer be used.
|
|
.Pp
|
|
This is meant to be used when mirroring is enabled and the
|
|
.Ar dshostname
|
|
DS is disabled, so that it can be re-enabled once it is repaired.
|
|
This needs to be done for all files in the exported MDS tree where
|
|
the data may not be up-to-date on the repaired DS when it is re-enabled.
|
|
After being re-enabled, the command
|
|
.Xr pnfsdscopymr 1
|
|
with the
|
|
.Dq -r
|
|
option
|
|
will be used to copy the file's data to this repaired DS and then update the
|
|
extended attribute to use it.
|
|
.Pp
|
|
A typical use of this will be within a
|
|
.Xr find 1
|
|
for all regular files in the MDS's exported tree.
|
|
.sp
|
|
For example, if the disabled DS is nfsv4-data3:
|
|
.br
|
|
# cd <top-level-exported-directory-on-MDS>
|
|
.br
|
|
# find . -type f -exec pnfsdsfile -q -r nfsv4-data3 {} \\;
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr find 1 ,
|
|
.Xr getaddrinfo 3 ,
|
|
.Xr nfsv4 4 ,
|
|
.Xr pnfs 4 ,
|
|
.Xr nfsd 8 ,
|
|
.Xr pnfsdscopymr 8 ,
|
|
.Xr pnfsdskill 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command first appeared in
|
|
.Fx 12.0 .
|