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4 .\" Copyright (c) 2011, 2012, Intel Corporation.
6 .\" This file may be copied under the terms of the GNU Public License v2.
8 .TH mount.lustre 8 "2008 Mar 15" Lustre "configuration utilities"
10 mount.lustre \- start a Lustre client or target service
13 .BI "mount \-t lustre [\-o " options "] " directory
16 is used to start a Lustre client or target service. This program should not be
17 called directly; rather it is a helper program invoked through
19 as above. Lustre clients and targets are stopped by using the
24 There are two forms for the
26 option, depending on whether a client or a target service is started:
28 .IR <mgsspec> :/ <fsname>[/<subdir>]
29 mounts the Lustre filesystem named
33 if specified) on the client by contacting the Management Service at
35 on the pathname given by
39 is defined below. A mounted client filesystem appears in
41 and is usable like any local filesystem and provides a full
42 POSIX-compilant interface.
45 starts the target service defined by the
47 command on the physical disk
49 A mounted target service filesystem is only useful for
51 operations and appears in
53 to show the device is in use.
56 .BI <mgsspec>:= <mgsnode>[:<mgsnode>]
57 The mgs specification may be a colon-separated list of nodes:
59 .BI <mgsnode>:= <mgsnid>[,<mgsnid>]
60 each node may be specified by a comma-separated list of NIDs.
62 In addition to the standard options listed in
64 Lustre understands the following
69 Enable full flock support, coherent across all client nodes.
72 Enable local flock support, using only client-local flock (faster, for applications that require flock but do not run on multiple nodes).
75 Disable flock support entirely. Applications calling flock will get an error.
78 Enable get/set of extended attributes by regular users. See the
83 Disable use of extended attributes by regular users. Root and system processes can still use extended attributes.
86 Enable POSIX Access Control List support. See the
91 Disable Access Control List support.
94 Force a client to keep pinging even if servers have enabled suppress_pings.
97 Enable mount/umount console messages.
100 Disable mount/umount console messages.
103 Enable FID to path translation by regular users.
106 Disable FID to path translation by regular users. Root and process with
107 CAP_DAC_READ_SEARCH can still perform FID to path translation.
109 .BI skpath= file|directory
110 Path to a file or directory with the keyfile(s) to load for this mount command.
111 Keys are inserted into the KEY_SPEC_SESSION_KEYRING keyring with a description
112 containing "lustre:" and a suffix which depends on whether the context of the
113 mount command is for an MGS, MDT/OST, or client.
114 This option is only available when built with --enable-gss.
116 In addition to the standard mount options and backing disk type
117 (e.g. ext3) options listed in
119 Lustre understands the following
124 Only start the MGC (and MGS, if co-located) for a target service, and not the actual service.
127 Start a MDT with a co-located MGS without starting the MGS.
130 Not trigger OI scrub automatically when detect some inconsistency, unless it is started explicitly.
133 Not resume the former paused/crashed LFSCK automatically when mount.
136 Start a client or MDT with a (colon-separated) list of known inactive OSTs.
139 Abort client recovery and start the target service immediately.
141 .BI md_stripe_cache_size
142 Sets the stripe cache size for server side disk with a striped raid
145 .BI recovery_time_soft= timeout
146 Allow 'timeout' seconds for clients to reconnect for recovery after a server
147 crash. This timeout will be incrementally extended if it is about to expire
148 and the server is still handling new connections from recoverable clients.
149 The default soft recovery timeout is set to 300 seconds (5 minutes).
151 .BI recovery_time_hard= timeout
152 The server will be allowed to incrementally extend its timeout up to a hard
153 maximum of 'timeout' seconds. The default hard recovery timeout is set to
154 900 seconds (15 minutes).
157 .B mount -t lustre cfs21@tcp0:/testfs /mnt/myfilesystem
158 Start a client for the Lustre filesystem 'testfs' at the mount point
159 /mnt/myfilesystem. The Management Service is running on a node reachable
160 from this client via the nid cfs21@tcp0.
162 .B mount -t lustre cfs21@tcp0:/testfs/dir /mnt/myfilesystem
163 Like above example, but mount subdirectory 'dir' as fileset.
165 .B mount -t lustre /dev/sda1 /mnt/test/mdt
166 Start the Lustre metadata target service from /dev/sda1 on mountpoint /mnt/test/mdt.
168 .B mount -t lustre -L testfs-MDT0000 -o abort_recov /mnt/test/mdt
169 Start the testfs-MDT0000 service (by using the disk label), but abort the
172 Not very many mount options can be changed with
183 .BR tunefs.lustre (8),