'\" t
.\"     Title: drbdadm
.\"    Author: [see the "Author" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 17 January 2018
.\"    Manual: System Administration
.\"    Source: DRBD 9.0.x
.\"  Language: English
.\"
.TH "DRBDADM" "8" "17 January 2018" "DRBD 9.0.x" "System Administration"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
drbdadm \- Utility for DRBD administration
.SH "SYNOPSIS"
.HP \w'\fBdrbdadm\fR\ 'u
\fBdrbdadm\fR [options...] [\-\-\ [\fIbackend\-options\fR...]] {\fIcommand\fR} {\fIcontext\fR...}
.SH "DESCRIPTION"
.PP
The
\fBdrbdadm\fR
utility is used for managing DRBD based on its configuration files, see
\fBdrbd.conf\fR(5)\&. It translates high\-level commands into one or more lower\-level commands for the
\fBdrbdsetup\fR
and
\fBdrbdmeta\fR
utilities, which control the kernel module and manipulate the on\-disk metadata\&.
.PP
Depending on the command, the
\fBdrbdadm\fR
utility operates on one or more resources, devices, connections, or peer devices\&. The following command contexts are defined:
.PP
.PP
\fIresource\fR
.RS 4
A resource specified by name, or the keyword
\fBall\fR
for all defined resources\&.
.RE
.PP
\fIdevice\fR
.RS 4
A device, specified by minor number (\fBminor\-\fR\fIminornumber\fR, e\&.g\&.
\fBminor\-\fR\fI0\fR) or by resource and volume number (\fIresource\fR/\fIvolume\fR)\&. If only a
\fIresource\fR
is specified, the command iterates over all devices of that resource\&.
.RE
.PP
\fIconnection\fR
.RS 4
A connection, specified by resource and connection name (\fIresource\fR:\fIconnection\-name\fR)\&. If only a
\fIresource\fR
is specified, the command iterates over all connections of that resource\&.
.RE
.PP
\fIpeer_device\fR
.RS 4
A peer device, specified by resource, connection name, and volume number (\fIresource\fR:\fIconnection\-name\fR/\fIvolume\fR)\&. If only a
\fIresource\fR,
\fIdevice\fR, or
\fIconnection\fR
is specified, the command iterates over all peer devices of that resource, device, or connection\&.
.RE
.PP
All options following a double\-dash are passed through to the lower\-level utilities as specified\&. In addition,
\fBdrbdadm\fR
understands most of the options of
\fBdrbdsetup\fR, and will pass them through even without the double\-dash\&.
.SH "OPTIONS"
.PP
\fB\-d\fR, \fB\-\-dry\-run\fR
.RS 4
Show which commands
\fBdrbdadm\fR
would execute instead of actually executing them (for example,
\fBdrbdadm \-d up \fR\fB\fIresource\fR\fR)\&. This can be a useful way to learn how
\fBdrbdsetup\fR
and
\fBdrbdmeta\fR
are used\&.
.RE
.PP
\fB\-c\fR, \fB\-\-config\-file\fR \fIfile\fR
.RS 4
Use an alternative configuration file\&. By default,
\fBdrbdadm\fR
will use the the first of the following files that exists:
\fB/etc/drbd\-90\&.conf\fR,
\fB/etc/drbd\-84\&.conf\fR,
\fB/etc/drbd\-83\&.conf\fR,
\fB/etc/drbd\-82\&.conf\fR,
\fB/etc/drbd\-08\&.conf\fR,
\fB/etc/drbd\&.conf\fR\&.
.RE
.PP
\fB\-t\fR, \fB\-\-config\-to\-test\fR \fIfile\fR
.RS 4
Check an additional configuration file\&. This option is only allowed with the dump and the sh\-nop commands\&.
.RE
.PP
\fB\-s\fR, \fB\-\-drbdsetup\fR \fIfile\fR
.RS 4
Specifies the full path to the
\fBdrbdsetup\fR
program\&. If this option is omitted, drbdadm will look for it beneath itself first, and then in the PATH\&.
.RE
.PP
\fB\-m\fR, \fB\-\-drbdmeta\fR \fIfile\fR
.RS 4
Specifies the full path to the
\fBdrbdmeta\fR
program\&. If this option is omitted, drbdadm will look for it beneath itself first, and then in the PATH\&.
.RE
.PP
\fB\-S\fR, \fB\-\-stacked\fR
.RS 4
Perform the command on a stacked resource\&.
.RE
.SH "COMMANDS"
.PP
adjust {\fIresource\fR}
.RS 4

Adjust the configuration of the kernel module so that it matches the configuration files\&. The result should be the same as when stopping and restarting all resources (\fBdrbdadm down all\fR
followed by
\fBdrbdadm up all\fR), but without the interruptions\&.
.sp
Note that the adjust command can misinterpret the configuration change in some cases\&. To be safe, check what the command would do (with the
\fB\-\-dry\-run\fR
option) before running the actual command\&.
.RE
.PP
adjust\-with\-progress {\fIresource\fR}
.RS 4

The same as
\fBadjust\fR, but with some more information about the command\*(Aqs progress\&.
.RE
.PP
apply\-al {\fIdevice\fR}
.RS 4

Apply the activity log of the specified device\&. See
\fBdrbdmeta\fR(8)
for details\&.
.RE
.PP
attach {\fIdevice\fR}
.RS 4
Attach a lower\-level device to an existing replicated device\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
check\-resize {\fIdevice\fR}
.RS 4

Call drbdmeta to eventually move internal meta data\&. If the backing device was resized, while DRBD was not running, meta data has to be moved to the end of the device, so that the next
\fBattach\fR
command can succeed\&.
.RE
.PP
connect {\fIconnection\fR}
.RS 4

Activate an exisiting connection to a peer\&. The connection needs to be created first with the
\fBnew\-peer\fR
command, and have at least one path created with the
\fBnew\-path\fR
command\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
create\-md {\fIdevice\fR}
.RS 4

Initialize the metadata of a device\&. This is necessary before a device can be attached; see
\fBdrbdmeta\fR(8)
for details\&.
.RE
.PP
cstate {\fIconnection\fR}
.RS 4

Show the current state of a connection\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
detach {\fIdevice\fR}
.RS 4

Detach the lower\-level device of a replicated device\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
disconnect {\fIconnection\fR}
.RS 4

Remove a connection to a peer host\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
disk\-options {\fIdevice\fR}
.RS 4

Change the disk options of an attached lower\-level device\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
down {\fIresource\fR}
.RS 4

Take a resource down by removing all volumes, connections, and the resource itself\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
dstate {\fIdevice\fR}
.RS 4

Show the current disk state of a lower\-level device\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
dump {\fIresource\fR}
.RS 4

Parse the configuration file and dump it to stdout\&. This will fail if the configuration file is syntactically incorrect\&.
.RE
.PP
dump\-md {\fIdevice\fR}
.RS 4

Dump the metadata of a device in text form, including the bitmap and activity log\&. See
\fBdrbdmeta\fR(8)
for details\&.
.RE
.PP
get\-gi {\fIpeer_device\fR}
.RS 4

Show the data generation identifiers for a device on a particular connection\&. Uses
\fBdrbdsetup\fR
for attached devices and
\fBdrbdmeta\fR
for unattached devices\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
hidden\-commands
.RS 4
Shows all commands which are not explicitly documented\&.
.RE
.PP
invalidate {\fIpeer_device\fR}
.RS 4

Replace the local data of a device with that of a peer\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
invalidate\-remote {\fIpeer_device\fR}
.RS 4

Replace a peer device\*(Aqs data of a resource with the local data\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
net\-options {\fIconnection\fR}
.RS 4

Change the network options of an existing connection\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
new\-current\-uuid {\fIdevice\fR}
.RS 4

Generate a new currend UUID\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
outdate {\fIdevice\fR}
.RS 4

Mark the data on a lower\-level device as outdated\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
pause\-sync {\fIpeer_device\fR}
.RS 4

Stop resynchronizing between a local and a peer device by setting the local pause flag\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
primary {\fIresource\fR}
.RS 4

Change the role of a node in a resource to primary\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
resize {\fIdevice\fR}
.RS 4

Resize the lower\-level devices of a replicated device on all nodes\&. This combines the
\fBcheck\-resize\fR
and
\fBresize\fR
lower\-level commands; see
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
resource\-options {\fIresource\fR}
.RS 4

Change the resource options of an existing resource\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
resume\-sync {\fIpeer_device\fR}
.RS 4

Allow resynchronization to resume by clearing the local sync pause flag\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
role {\fIresource\fR}
.RS 4

Show the current role of a resource\&.
.RE
.PP
secondary {\fIresource\fR}
.RS 4

Change the role of a node in a resource to secondary\&. This command fails if the replicated device is in use\&.
.RE
.PP
show\-gi {\fIpeer_device\fR}
.RS 4

Show the data generation identifiers for a device on a particular connection\&. In addition, explain the output\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
state {\fIresource\fR}
.RS 4

This is an alias for
\fBdrbdsetup role\fR\&. Deprecated\&.
.RE
.PP
up {\fIresource\fR}
.RS 4

Bring up a resource by applying the activity log of all volumes, creating the resource, creating the replicated devices, attaching the lower\-level devices, and connecting to all peers\&. See the
\fBapply\-al\fR
drbdmeta command and the
\fBnew\-resource\fR,
\fBnew\-device\fR,
\fBnew\-minor\fR,
\fBattach\fR, and
\fBconnect\fR
drbdsetup commands\&.
.RE
.PP
verify {\fIpeer_device\fR}
.RS 4

Start online verification, change which part of the device will be verified, or stop online verification\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
wait\-connect {[\fIdevice\fR] | [\fIconnection\fR] | [\fIresource\fR]}
.RS 4

Wait until a device on a peer, all devices over a connection, or all devices on all peers are visible\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
wait\-sync {[\fIdevice\fR] | [\fIconnection\fR] | [\fIresource\fR]}
.RS 4

Wait until a device is connected and has finished eventual resync operation\&. Also available on connection and resource level\&. See
\fBdrbdsetup\fR(8)
for details\&.
.RE
.PP
wipe\-md {\fIdevice\fR}
.RS 4

Wipe out the DRBD metadata of a device\&. See
\fBdrbdmeta\fR(8)
for details\&.
.RE
.PP
forget\-peer {\fIconnection\fR}
.RS 4

Completely remove any reference to a unconnected peer from meta\-data\&. See
\fBdrbdmeta\fR(8)
for details\&.
.RE
.SH "VERSION"
.sp
This document was revised for version 9\&.0\&.0 of the DRBD distribution\&.
.SH "AUTHOR"
.sp
Written by Philipp Reisner <philipp\&.reisner@linbit\&.com> and Lars Ellenberg <lars\&.ellenberg@linbit\&.com>
.SH "REPORTING BUGS"
.sp
Report bugs to <drbd\-user@lists\&.linbit\&.com>\&.
.SH "COPYRIGHT"
.sp
Copyright 2001\-2018 LINBIT Information Technologies, Philipp Reisner, Lars Ellenberg\&. This is free software; see the source for copying conditions\&. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE\&.
.SH "SEE ALSO"
.PP
\fBdrbd.conf\fR(5),
\fBdrbd\fR(8),
\fBdrbdsetup\fR(8),
\fBdrbdmeta\fR(8)
and the
\m[blue]\fBDRBD project web site\fR\m[]\&\s-2\u[1]\d\s+2
.SH "NOTES"
.IP " 1." 4
DRBD project web site
.RS 4
\%http://www.drbd.org/
.RE