.\" -*- nroff -*-
.\" Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
.\"
-.\" Copyright (c) 2012, 2016, Intel Corporation.
+.\" Copyright (c) 2012, 2017, Intel Corporation.
.\"
.\" This file may be copied under the terms of the GNU Public License v2.
.\"
-.TH mount.lustre 8 "2008 Mar 15" Lustre "configuration utilities"
+.TH mount.lustre 8 "2019 Jul 30" Lustre "configuration utilities"
.SH NAME
-mount.lustre \- start a Lustre client or target service
+mount.lustre \- mount helper for Lustre client
+mount.lustre_tgt \- mount helper for Lustre target service
.SH SYNOPSIS
.br
-.BI "mount \-t lustre [\-o " options "] " "device mountpoint"
+.BI "mount -t lustre [-o " options "] " "<mgsname>:/<fsname> <client_mountpoint>"
+.br
+.BI "mount -t lustre_tgt [-o " options "] " "<block_device> <server_mountpoint>"
.SH DESCRIPTION
.B mount.lustre
-is used to start a Lustre client or target service. This program should not be
-called directly; rather it is a helper program invoked through
+and
+.B mount.lustre_tgt
+are used to start a Lustre client or target service, respectively. They
+should not be called directly; rather they are helper programs invoked through
.BR mount (8)
-as above. Lustre clients and targets are stopped by using the
+as above when the
+.B lustre
+or
+.B lustre_tgt
+filesystem type is used. Lustre clients and targets are stopped by using the
.BR umount (8)
command.
.br
-There are two forms for the
-.I device
-option, depending on whether a client or a target service is started:
+There are two forms for the device option passed to the
+.I mount
+command, depending on whether a client or a target service is started:
.TP
.IR <mgsname> :/ <fsname>[/<subdir>]
-mounts the Lustre filesystem named
+mounts the Lustre client filesystem named
.I fsname
(optionally starting at subdirectory
.I subdir
within the filesystem, if specified) on the client at the directory
-.IR mountpoint ,
+.IR client_mountpoint ,
by contacting the Management Service at
.IR mgsname .
The format for
.I mgsname
-is defined below. A client filesystem can be listed in
+is defined below. A client filesystem will typically be listed in
.BR fstab (5)
for automatic mount at boot time, is usable like any local filesystem, and
provides a full POSIX-compilant interface.
.TP
.I block_device
-starts the target service defined by the
+specifies the phyisical disk or ZFS dataset uses to start the target service
+formatted by the
.IR mkfs.lustre (8)
-command on the physical disk
-.IR block_device .
-The
+command. The
.I block_device
may be specified using
.BI -L label
.I mountpoint
is only useful for
.BR df (1)
-operations and appears in
+operations to show the current space usage, and appears in
.BR /proc/mounts
to show the device is in use.
.SH OPTIONS
.BI <mgsnode>:= <mgsnid>[,<mgsnid>]
Each
.I mgsnode
-may be specify a comma-separated list of NIDs, if there are different
-LNet interfaces for that
+may specify a comma-separated list of NIDs, if there are different
+LNet interfaces for the same
.IR mgsnode .
.TP
.BI mgssec= flavor
.BR flock(2)
will get an
.B ENOSYS
-error. It is up to theadministrator to choose either the
+error. It is up to the administrator to choose either the
.B localflock
or
.B flock
Force a client to keep pinging even if servers have enabled suppress_pings.
.TP
.BI verbose
-Enable mount/umount console messages.
+Enable mount/remount/umount console messages.
.TP
.BI noverbose
-Disable mount/umount console messages.
+Disable mount/remount/umount console messages.
.TP
.BI user_fid2path
-Enable FID to path translation by regular users.
+Enable FID to path translation by regular users via
+.BR "lfs fid2path" .
.TP
.BI nouser_fid2path
Disable FID to path translation by regular users. Root and process with
points on the same node, with each mount point using a different
network. It is also interesting when running Lustre clients from
containers, by restricting each container to a specific network.
-.SH CLIENT OPTIONS
+.PP
+.RS
+Warning! 'network' option is incompatible with LNet Dynamic Peer Discovery.
+If you want to restrict client NID, please make sure LNet Dynamic Peer Discovery
+is disabled.
+.RE
+.SH SERVER OPTIONS
In addition to the standard mount options and backing disk type
(e.g. ldiskfs) options listed in
.BR mount (8),
options:
.TP
.BI acl
-Enable POSIX Access Control List support. See the
+Enable POSIX Access Control List support for all clients. See the
.BR acl (5)
manual page.
.TP
-.BI noacl
-Disable Access Control List support.
-.TP
.BI nosvc
-Only start the MGC (and MGS, if co-located) for a target service, and not the actual service.
+Only start the MGC (and MGS, if co-located) for a target service,
+and not the actual MDS or OSS service.
.TP
.BI nomgs
-Start a MDT with a co-located MGS without starting the MGS.
+Start an MDT with a co-located MGS without starting the MGS service.
.TP
.BI noscrub
-Not trigger OI scrub automatically when detect some inconsistency, unless it is started explicitly.
+Do not trigger OI scrub automatically when an inconsistency is detected.
+It is still possible to start explicitly using the
+.BR "lctl lfsck_start" .
.TP
.BI skip_lfsck
-Not resume the former paused/crashed LFSCK automatically when mount.
+Do not resume the former paused/crashed LFSCK automatically when mounting.
.TP
.BI abort_recov
Abort client recovery and start the target service immediately.
different interfaces on the same host, and the Lustre client chooses the best
one for communication based on which network interfaces are available locally.
.TP
-.B mount -t lustre /dev/sda1 /mnt/test/mdt
+.B mount -t lustre_tgt /dev/sda1 /mnt/test/mdt
Start the Lustre metadata target service from
.B /dev/sda1
on mountpoint
.BR /mnt/test/mdt .
.TP
-.B mount -t lustre -L testfs-MDT0000 -o abort_recov /mnt/test/mdt
+.B mount -t lustre_tgt -L testfs-MDT0000 -o abort_recov /mnt/test/mdt
Start the
.B testfs-MDT0000
-service (by using the disk label), but aborts the recovery process if
-all of the clients are known to be unavailable.
+service (by using the disk label), but aborts the Lustre client recovery
+process for the case that clients are known to be unavailable.
.SH BUGS
Not very many mount options can be changed with
.BR "-o remount" .
git://git.whamcloud.com / fs / lustre-release.git / blobdiff