1 .TH lfs 1 "2018-01-24" Lustre "user utilities"
3 lfs \- client utility for Lustre-specific file layout and other attributes
6 .B lfs changelog \fR[\fB--follow\fR] <\fImdtname\fR> [\fIstartrec \fR[\fIendrec\fR]]
8 .B lfs changelog_clear <\fImdtname\fR> <\fIid\fR> <\fIendrec\fR>
10 .B lfs check \fR<\fBmgts\fR|\fBmdts\fR|\fBosts\fR|\fBall\fR>
12 .B lfs data_version \fR[\fB-nrw\fR] \fB<\fIfilename\fR>
14 .B lfs df \fR[\fB-ihlv\fR] [\fB--pool\fR|\fB-p \fR<\fIfsname\fR>[.<\fIpool\fR>]] [\fIpath\fR]
16 .B lfs fid2path \fR[\fB--link \fR<\fIlinkno\fR>] <\fIfsname\fR|\fIrootpath\fR> <fid\fR> ...
18 .B lfs find \fR<\fIdirectory\fR|\fIfilename \fR...>
19 [[\fB!\fR] \fB--atime\fR|\fB-A\fR [\fB-+\fR]\fIn\fR]
20 [[\fB!\fR] \fB--ctime\fR|\fB-C\fR [\fB+-\fR]\fIn\fR]
21 [[\fB!\fR] \fB--mtime\fR|\fB-M\fR [\fB-+\fR]\fIn\fR]
22 [[\fB!\fR] \fB--component-count\fR|\fB--comp-count\fR [\fB+-\fR]\fIn\fR]
23 [[\fB!\fR] \fB--component-flags\fR|\fB--comp-flags\fR <[\fB^\fR]\fIflag\fB,\fR...>]
24 [[\fB!\fR] \fB--component-end\fR|\fB--comp-end\fR|\fB-E\fR [\fB+-\fR]\fIn\fR[\fBKMGTPE\fR]]
25 [[\fB!\fR] \fB--component-start\fR|\fB--comp-start\fR [\fB+-\fR]\fIn\fR[\fBKMGTPE\fR]]
26 [[\fB!\fR] \fB--mirror-count\fR|\fB-N\fR [\fB+-\fR]\fIn\fR]
27 [[\fB!\fR] \fB--mirror-state\fR <[^]\fIstate\fR>]
28 [[\fB!\fR] \fB--gid\fR|\fB-g\fR|\fB--group\fR|\fB-G\fR <\fIgname\fR>|<\fIgid\fR>]
29 [[\fB!\fR] \fB--layout\fR|\fB-L mdt\fR,\fBraid0\fR,\fBreleased\fR]
30 [\fB--maxdepth\fR|\fB-D\fI n\fR]
31 [[\fB!\fR] \fB--mdt\fR|\fB--mdt-index\fR|\fB-m\fR <\fIuuid\fR|\fIindex\fR,...>]
32 [[\fB!\fR] \fB--mdt-count\fR|\fB-T\fR [\fB+-\fR]\fIn\fR]
33 [[\fB!\fR] \fB--mdt-hash\fR|\fB-H \fI<hashtype>\fR]
34 [[\fB!\fR] \fB--name\fR|\fB-n \fI<pattern>\fR]
35 [[\fB!\fR] \fB--ost\fR|\fB-O\fR <\fIuuid\fR|\fIindex\fR,...>]
36 [[\fB!\fR] \fB--pool\fR <\fIpool\fR>]
37 [\fB--print\fR|\fB-P\fR] [\fB--print0\fR|\fB-0\fR]
38 [[\fB!\fR] \fB--projid\fR |<\fIprojid\fR>]
39 [[\fB!\fR] \fB--size|\fB-s\fR [\fB-+\fR]\fIn\fR[\fBKMGTPE\fR]]
40 [[\fB!\fR] \fB--stripe-count\fR|\fB-c\fR [\fB+-\fR]\fIn\fR]
41 [[\fB!\fR] \fB--stripe-index\fR|\fB-i\fR \fIn\fR,...]
42 [[\fB!\fR] \fB--extension-size\fR|\fB-ext-size\fR|\fB-z\fR [\fB+-\fR]\fIn\fR[\fBKMG\fR]]
43 [[\fB!\fR] \fB--stripe-size\fR|\fB-S\fR [\fB+-\fR]\fIn\fR[\fBKMG\fR]]
44 [[\fB!\fR] \fB--type\fR|\fB-t\fR {\fBbcdflps\fR}]
45 [[\fB!\fR] \fB--uid\fR|\fB-u\fR|\fB--user\fR|\fB-U
46 \fR<\fIuname\fR>|<\fIuid\fR>]
49 .RB [ --help | -h "] [" -k "] [" -r "] [" \fIrootpath\fR "]"
52 .RB [ --help | -h "] [" --instance | -i "] [" --fsname | -n "] ["
56 [\fB--component-count\fR|\fB--comp-count\fR]
57 [\fB--component-end\fR|\fB-E\fR[=[\fB+-\fR]\fIN\fR[\fBKMGTPE\fR]]
58 [\fB--component-flags\fR[=[\fB^\fR]\fIflag\fB,\fR...]]
59 [\fB--component-id\fR|\fB-I \fR[=\fIcomp_id\fR]]
60 [\fB--component-start\fR[=[\fB+-\fR]\fIN\fR[\fBKMGTPE\fR]]]
61 [\fB--directory\fR|\fB-d\fR]
62 [\fB--fid\fR|\fB-F\fR]
63 [\fB--generation\fR|\fB-g\fR]
64 [\fB--layout\fR|\fB-L\fR]
65 [\fB--mdt\fR|\fB--mdt-index\fR|\fB-m\fR]
66 [\fB--ost\fR|\fB-O\fR <\fIuuid\fR>]
67 [\fB--pool\fR|\fB-p\fR]
68 [\fB--quiet\fR|\fB-q\fR]
69 [\fB--recursive\fR|\fB-r\fR]
70 [\fB--raw\fR|\fB-R\fR]
71 [\fB--stripe-count\fR|\fB-c\fR]
72 [\fB--stripe-index\fR|\fB-i\fR]
73 [\fB--stripe-size\fR|\fB-S\fR]
74 [\fB--extension-size\fR|\fB--ext-size\fR|\fB-z\fR]
75 [\fB--verbose\fR|\fB-v\fR]
76 [\fB--yaml\fR|\fB-y\fR]
77 <\fIdirname\fR|\fIfilename\fR> ...
79 .B lfs migrate \fR{\fB--mdt-index\fR|\fB-m\fR} <\fImdt_index\fR> \fIdirectory\fR
81 .B lfs migrate \fR[\fB--stripe-count\fR|\fB-c\fR \fR<\fIstripe_count\fR>]
82 [\fB--stripe-index\fR|\fB-i\fR \fR<\fIstart_ost_idx\fR>]
83 [\fB--stripe-size\fR|\fB-S\fR \fR<\fIstripe_size\fR>]
84 [\fB--pool\fR|\fB-p\fR \fR<\fIpool_name\fR>]
85 [\fB-o\fR|\fB--ost-list \fR<\fIost_indices\fR>]
86 [\fB--block\fR|\fB-b\fR]
87 [\fB--non-block\fR|\fB-n\fR] <\fIfile\fR|\fIdirectory\fR>
89 .B lfs migrate \fR<\fB--component-end\fR|\fB-E\fR \fIcomp_end1\fR>
90 [\fISTRIPE_OPTIONS\fR]
91 <\fB--component-end\fR|\fB-E\fR \fIcomp_end2\fR>
92 [\fISTRIPE_OPTIONS\fR]
95 .B lfs mkdir \fR[\fB-c\fR|\fB--count \fR<\fIstripe_count\fR>]
96 [\fB-i\fR|\fB--index \fR<\fImdt_idx\fR>]
97 [\fB-h\fR|\fB--hash-type \fR<\fIhash_name\fR>]
98 [\fB-m\fR|\fB--mode \fR<\fImode\fR>]
99 [\fB-D\fR|\fB--default\fR] \fIdirectory\fR
101 .B lfs osts \fR[<\fIpath\fR>]
103 .B lfs mdts \fR[<\fIpath\fR>]
105 .B lfs path2fid \fR[\fB--parents\fR] <\fIpath\fR> ...
107 .B lfs pool_list \fR<\fIfilesystem\fR>[\fB.\fR<\fIpool\fR>] | <\fIpathname\fR>
109 .B lfs setstripe \fR[\fB--stripe-size\fR|\fB-S <\fIsize\fR>] [\fB--stripe-count\fR|-c <\fIcount\fR>]
110 [\fB--stripe-index\fR|\fB-i <\fIstart_ost_index\fR>] [\fB--pool\fR|\fB-p \fR<\fIpoolname\fR>]
111 [\fB--extension-size\fR|\fB--ext-size\fR|\fB-z <\fIext_size\fR>]
112 [\fB--ost-list\fR|\fB-o <\fIost_indices\fR>] <\fIdirectory\fR|\fIfilename\fR>
114 .B lfs setstripe -d \fR<\fIdir\fR>
116 .B lfs setstripe --component-end\fR|\fB-E <\fIend1> [\fISTRIPE_OPTIONS\fR]
117 [\fB--component-end\fR|\fB-E \fR<\fIend2\fR> [\fISTRIPE_OPTIONS\fR]]
120 .B lfs setstripe --component-add \fB-E\fR <\fIend1> [\fISTRIPE_OPTIONS]
121 [\fB--component-end\fR|\fB-E \fR<\fIend2\fR> [\fISTRIPE_OPTIONS\fR]]
124 .B lfs setstripe --component-del \fR{\fB--component-id\fR|\fB-I \fR<\fIid\fR> |
125 \fB--component-flags \fR<\fIflags\fR>}
128 .B lfs setstripe --yaml=\fR<\fIyaml_template_file\fR> <\fIfilename\fR>
132 .B lfs --list-commands
137 can be used to create a new file with a specific striping pattern, determine
138 the default striping pattern, gather the extended attributes (object numbers
139 and location) for a specific file. It can be invoked interactively without any
140 arguments or in a non-interactive mode with one of the arguments supported.
142 A number of sub-commands supported by lfs are listed below. Other commands
143 are described in separate man pages of the form
150 Show the metadata changes on an MDT. Start and end points are optional. The --follow option will block on new changes; this option is only valid when run direclty on the MDT node.
153 Indicate that changelog records previous to <endrec> are no longer of
154 interest to a particular consumer <id>, potentially allowing the MDT to
155 free up disk space. An <endrec> of 0 indicates the current last record.
156 Changelog consumers must be registered on the MDT node using \fBlctl\fR.
158 .B check <mgts|mdts|osts|all>
159 Display the status of the MGTs, MDTs or OSTs (as specified in the command) or
160 all the servers (MGTs, MDTs and OSTs).
162 .B data_version [-nrw] <filename>
163 Display the current version of file data. If -n is specified, the data version
164 is read without taking a lock. As a consequence, the data version could be
165 outdated if there are dirty caches on filesystem clients, but this option will
166 not force data flushes and has less of an impact on the filesystem. If -r is
167 specified, the data version is read after dirty pages on clients are flushed. If
168 -w is specified, the data version is read after all caching pages on clients are
171 Even with -r or -w, race conditions are possible and the data version should be
172 checked before and after an operation to be confident the data did not change
175 The data version is the sum of the last committed transaction numbers of all
176 data objects of a file. It is used by HSM policy engines for verifying that file
177 data has not been changed during an archive operation or before a release
178 operation, and by OST migration, primarily for verifying that file data has not
179 been changed during a data copy, when done in non-blocking mode.
186 List all the OSTs for all mounted filesystems. If a \fBpath\fR is provided
187 that is located on a lustre mounted file system then only the OSTs belonging
188 to that filesystem are displayed.
191 .RI { filesystem }[ .poolname "] | {" pathname }
197 .IR filesystem.pool .
199 .B swap_layouts <filename1> <filename2>
200 Swap the data (layout and OST objects) of two regular files. The
201 two files have to be in the same filesystem, owned by the same user,
202 reside on the same MDT and writable by the user.
204 Swapping the layout of two directories is not permitted.
207 lfs mkdir is documented in the man page: lfs-mkdir(1). NOTE:
209 is an alias of the command
213 lfs mv is deprecated, use lfs
221 See lfs-setstripe(1).
224 Output the build version of the lfs utility. Use "lctl lustre_build_version" to get the version of the Lustre kernel modules
227 Output a list of the commands supported by the lfs utility
230 Provides brief help on the various arguments
233 Quit the interactive lfs session
237 Check the status of all servers (MGT, MDT, OST)
245 .B $ lfs quotaoff -ug /mnt/lustre
246 Turn quotas of user and group off
248 The usage of \fBlfs find\fR, \fBlfs getstripe\fR, \fBlfs hsm_*\fR,
249 \fBlfs setstripe\fR, \fBlfs migrate\fR, \fBlfs getdirstripe\fR,
250 \fBlfs setdirstripe\fR, \fBlfs mkdir\fR, \fBlfs flushctx\fR
251 and \fBlfs project\fR are explained in separate man pages.
253 The lfs command is part of the Lustre filesystem.
257 .BR lfs-fid2path (1),
259 .BR lfs-flushctx (1),
260 .BR lfs-getdirstripe (1),
262 .BR lfs-getstripe (1),
268 .BR lfs-path2fid (1),
270 .BR lfs-setdirstripe (1),
271 .BR lfs-setquota (1),
272 .BR lfs-setstripe (1),