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--stripe-size\fR|\fB-S\fR [\fB+-\fR]\fIn\fR[\fBKMG\fR]]
43 [[\fB!\fR] \fB--type\fR|\fB-t\fR {\fBbcdflps\fR}]
44 [[\fB!\fR] \fB--uid\fR|\fB-u\fR|\fB--user\fR|\fB-U
45 \fR<\fIuname\fR>|<\fIuid\fR>]
47 .B lfs getname [-h]|[path ...]
50 [\fB--component-count\fR|\fB--comp-count\fR]
51 [\fB--component-end\fR|\fB-E\fR[=[\fB+-\fR]\fIN\fR[\fBKMGTPE\fR]]
52 [\fB--component-flags\fR[=[\fB^\fR]\fIflag\fB,\fR...]]
53 [\fB--component-id\fR|\fB-I \fR[=\fIcomp_id\fR]]
54 [\fB--component-start\fR[=[\fB+-\fR]\fIN\fR[\fBKMGTPE\fR]]]
55 [\fB--directory\fR|\fB-d\fR]
56 [\fB--fid\fR|\fB-F\fR]
57 [\fB--generation\fR|\fB-g\fR]
58 [\fB--layout\fR|\fB-L\fR]
59 [\fB--mdt\fR|\fB--mdt-index\fR|\fB-m\fR]
60 [\fB--ost\fR|\fB-O\fR <\fIuuid\fR>]
61 [\fB--pool\fR|\fB-p\fR]
62 [\fB--quiet\fR|\fB-q\fR]
63 [\fB--recursive\fR|\fB-r\fR]
64 [\fB--raw\fR|\fB-R\fR]
65 [\fB--stripe-count\fR|\fB-c\fR]
66 [\fB--stripe-index\fR|\fB-i\fR]
67 [\fB--stripe-size\fR|\fB-S\fR]
68 [\fB--verbose\fR|\fB-v\fR]
69 [\fB--yaml\fR|\fB-y\fR]
70 <\fIdirname\fR|\fIfilename\fR> ...
72 .B lfs migrate \fR{\fB--mdt-index\fR|\fB-m\fR} <\fImdt_index\fR> \fIdirectory\fR
74 .B lfs migrate \fR[\fB--stripe-count\fR|\fB-c\fR \fR<\fIstripe_count\fR>]
75 [\fB--stripe-index\fR|\fB-i\fR \fR<\fIstart_ost_idx\fR>]
76 [\fB--stripe-size\fR|\fB-S\fR \fR<\fIstripe_size\fR>]
77 [\fB--pool\fR|\fB-p\fR \fR<\fIpool_name\fR>]
78 [\fB-o\fR|\fB--ost-list \fR<\fIost_indices\fR>]
79 [\fB--block\fR|\fB-b\fR]
80 [\fB--non-block\fR|\fB-n\fR] <\fIfile\fR|\fIdirectory\fR>
82 .B lfs migrate \fR<\fB--component-end\fR|\fB-E\fR \fIcomp_end1\fR>
83 [\fISTRIPE_OPTIONS\fR]
84 <\fB--component-end\fR|\fB-E\fR \fIcomp_end2\fR>
85 [\fISTRIPE_OPTIONS\fR]
88 .B lfs mkdir \fR[\fB-c\fR|\fB--count \fR<\fIstripe_count\fR>]
89 [\fB-i\fR|\fB--index \fR<\fImdt_idx\fR>]
90 [\fB-h\fR|\fB--hash-type \fR<\fIhash_name\fR>]
91 [\fB-m\fR|\fB--mode \fR<\fImode\fR>]
92 [\fB-D\fR|\fB--default\fR] \fIdirectory\fR
94 .B lfs osts \fR[<\fIpath\fR>]
96 .B lfs mdts \fR[<\fIpath\fR>]
98 .B lfs path2fid \fR[\fB--parents\fR] <\fIpath\fR> ...
100 .B lfs pool_list \fR<\fIfilesystem\fR>[\fB.\fR<\fIpool\fR>] | <\fIpathname\fR>
102 .B lfs quota \fR[\fB-qv\fR] [\fB-o \fIobd_uuid\fR|\fB-I \fIost_idx\fR|\fB-i \fImdt_idx\fR]
103 [\fB-u <\fIuname\fR|\fIuid\fR>|\fB-g <\fIgname\fR|\fIgid\fR>]
104 [\fB-p <\fIprojid\fR>] <\fIfilesystem\fR>
106 .B lfs quota -t \fR<\fB-u\fR|\fB-g\fR|\fB-p\fR> <\fIfilesystem\fR>
108 .B lfs quotacheck \fR[\fB-ug\fR] <\fIfilesystem\fR>
110 .B lfs quota \fR<\fB-U\fR|\fB-G\fR|\fB-P\fR> <\fIfilesystem\fR>
112 .B lfs quotaon \fR[\fB-ugf\fR] <\fIfilesystem\fR>
114 .B lfs quotaoff \fR[\fB-ug\fR] <\fIfilesystem\fR>
116 .B lfs setstripe \fR[\fB--stripe-size\fR|\fB-S <\fIsize\fR>] [\fB--stripe-count\fR|-c <\fIcount\fR>]
117 [\fB--stripe-index\fR|\fB-i <\fIstart_ost_index\fR>] [\fB--pool\fR|\fB-p \fR<\fIpoolname\fR>]
118 [\fB--ost-list\fR|\fB-o <\fIost_indices\fR>] <\fIdirectory\fR|\fIfilename\fR>
120 .B lfs setstripe -d \fR<\fIdir\fR>
122 .B lfs setstripe --component-end\fR|\fB-E <\fIend1> [\fISTRIPE_OPTIONS\fR]
123 [\fB--component-end\fR|\fB-E \fR<\fIend2\fR> [\fISTRIPE_OPTIONS\fR]]
126 .B lfs setstripe --component-add \fB-E\fR <\fIend1> [\fISTRIPE_OPTIONS]
127 [\fB--component-end\fR|\fB-E \fR<\fIend2\fR> [\fISTRIPE_OPTIONS\fR]]
130 .B lfs setstripe --component-del \fR{\fB--component-id\fR|\fB-I \fR<\fIid\fR> |
131 \fB--component-flags \fR<\fIflags\fR>}
134 .B lfs setstripe --yaml=\fR<\fIyaml_template_file\fR> <\fIfilename\fR>
138 .B lfs --list-commands
143 can be used to create a new file with a specific striping pattern, determine
144 the default striping pattern, gather the extended attributes (object numbers
145 and location) for a specific file. It can be invoked interactively without any
146 arguments or in a non-interactive mode with one of the arguments supported.
148 A number of sub-commands supported by lfs are listed below. Other commands
149 are described in separate man pages of the form
156 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.
159 Indicate that changelog records previous to <endrec> are no longer of
160 interest to a particular consumer <id>, potentially allowing the MDT to
161 free up disk space. An <endrec> of 0 indicates the current last record.
162 Changelog consumers must be registered on the MDT node using \fBlctl\fR.
164 .B check <mgts|mdts|osts|all>
165 Display the status of the MGTs, MDTs or OSTs (as specified in the command) or
166 all the servers (MGTs, MDTs and OSTs).
168 .B data_version [-nrw] <filename>
169 Display the current version of file data. If -n is specified, the data version
170 is read without taking a lock. As a consequence, the data version could be
171 outdated if there are dirty caches on filesystem clients, but this option will
172 not force data flushes and has less of an impact on the filesystem. If -r is
173 specified, the data version is read after dirty pages on clients are flushed. If
174 -w is specified, the data version is read after all caching pages on clients are
177 Even with -r or -w, race conditions are possible and the data version should be
178 checked before and after an operation to be confident the data did not change
181 The data version is the sum of the last committed transaction numbers of all
182 data objects of a file. It is used by HSM policy engines for verifying that file
183 data has not been changed during an archive operation or before a release
184 operation, and by OST migration, primarily for verifying that file data has not
185 been changed during a data copy, when done in non-blocking mode.
187 .B getname [-h]|[path ...]
188 Report all the Lustre mount points and the corresponding Lustre filesystem
189 instance. If one or more \fBpath\fR entries are provided, then only the
190 Lustre instance for these mount points is returned. If the path given is not on
191 a Lustre instance 'No such device' is reported.
195 List all the OSTs for all mounted filesystems. If a \fBpath\fR is provided
196 that is located on a lustre mounted file system then only the OSTs belonging
197 to that filesystem are displayed.
199 .B fid2path [--link <linkno>] <fsname|rootpath> <fid> ...
200 Print out the pathname(s) for the specified \fIfid\fR(s) from the filesystem
201 mounted at \fBrootpath\fR or named \fBfsname\fR. If a file has multiple
202 hard links, then all of the pathnames for that file are printed, unless
203 \fB--link\fR limits the printing to only the specified link number (starting
204 at 0, in no particular order). If multiple fids are specified, but only a
205 single pathname is needed for each file, use \fB--link 0\fR.
207 .B path2fid [--parents] <path> ...
208 Print out the FIDs for the specified \fBpath(s)\fR. If multiple pathnames
209 are given, then they will be printed one per line with the path as prefix.
210 The \fB--parents\fR switch makes it output the parent FID and name(s) of the
211 given entries. If an entry has multiple links, these are displayed on a single
215 .RI { filesystem }[ .poolname "] | {" pathname }
221 .IR filesystem.pool .
223 .B quota [-q] [-v] [-o obd_uuid|-i mdt_idx|-I ost_idx] [-u|-g|-p <uname>|<uid>|<gname>|<gid>|<projid>] <filesystem>
224 To display disk usage and limits, either for the full filesystem, or for objects on a specific obd. A user or group name or an ID can be specified. If user group and project are omitted quotas for current uid/gid/projid are shown. -v provides more verbose (with per-obd statistics) output. -q disables printing of additional descriptions (including column titles).
226 .B quota -t <-u|-g|-p> <filesystem>
227 To display block and inode grace times for user (-u) or group (-g) or project (-p) quotas
229 .B quotacheck [-ugf] <filesystem> (deprecated as of 2.4.0)
230 To scan the specified filesystem for disk usage, and create or update quota files. Options specify quota for users (-u) groups (-g) and force (-f). Not useful anymore with servers >= 2.4.0 since space accounting is always turned on.
232 .B quotaon [-ugf] <filesystem> (deprecated as of 2.4.0)
233 To turn filesystem quotas on. Options specify quota for users (-u) groups (-g) and force (-f). Not used anymore in lustre 2.4.0 where quota enforcement must be enabled via conf_param (e.g. lctl conf_param ${FSNAME}.quota.<ost|mdt>=<u|g|ug>)
235 .B quotaoff [-ugf] <filesystem> (deprecated as of 2.4.0)
236 To turn filesystem quotas off. Options specify quota for users (-u) groups (-g) and force (-f). Not used anymore in lustre 2.4.0 where quota enforcement can be turned off (for inode or block) by running the following command on the MGS: lctl conf_param ${FSNAME}.quota.<ost|mdt>=""
238 .B swap_layouts <filename1> <filename2>
239 Swap the data (layout and OST objects) of two regular files. The
240 two files have to be in the same filesystem, owned by the same user,
241 reside on the same MDT and writable by the user.
243 Swapping the layout of two directories is not permitted.
246 lfs mkdir is documented in the man page: lfs-mkdir(1). NOTE:
248 is an alias of the command
252 lfs mv is deprecated, use lfs
260 See lfs-setstripe(1).
263 Output the build version of the lfs utility. Use "lctl lustre_build_version" to get the version of the Lustre kernel modules
266 Output a list of the commands supported by the lfs utility
269 Provides brief help on the various arguments
272 Quit the interactive lfs session
276 Check the status of all servers (MGT, MDT, OST)
284 .B $ lfs quota -u bob /mnt/lustre
285 List quotas of user `bob'
287 .B $ lfs quota -U /mnt/lustre
288 List user quotas of system default setting
290 .B $ lfs quota -t -u /mnt/lustre
291 Show grace times for user quotas on /mnt/lustre
293 .B $ lfs quotachown -i /mnt/lustre
294 Change file owner and group
296 .B $ lfs quotacheck -ug /mnt/lustre
297 Quotacheck for user and group - will turn on quotas after making the check.
299 .B $ lfs quotaon -ug /mnt/lustre
300 Turn quotas of user and group on
302 .B $ lfs quotaoff -ug /mnt/lustre
303 Turn quotas of user and group off
305 The usage of \fBlfs find\fR, \fBlfs getstripe\fR, \fBlfs hsm_*\fR,
306 \fBlfs setstripe\fR, \fBlfs migrate\fR, \fBlfs getdirstripe\fR,
307 \fBlfs setdirstripe\fR, \fBlfs mkdir\fR, and \fBlfs project\fR are explained
308 in separate man pages.
310 The lfs command is part of the Lustre filesystem.
315 .BR lfs-getstripe (1),
316 .BR lfs-getdirstripe (1),
322 .BR lfs-setdirstripe (1),
323 .BR lfs-setquota (1),
324 .BR lfs-setstripe (1),