1 .TH lfs 1 "2009 Jan 29" Lustre "user utilities"
3 lfs \- Lustre utility to create a file with specific striping pattern, find the striping pattern of existing files
8 .B lfs changelog [--follow] <mdtname> [startrec [endrec]]
10 .B lfs changelog_clear <mdtname> <id> <endrec>
12 .B lfs check <mds|osts|servers>
14 .B lfs df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
16 .B lfs find [[!] --atime|-A [-+]N] [[!] --mtime|-M [-+]N]
17 \fB[[!] --ctime|-C [-+]N] [--maxdepth|-D N] [--name|-n pattern]
18 \fB[--print|-p] \fB[--print0|-P] [[!] --obd|-O <uuid[s]>]
19 \fB[[!] --size|-S [-+]N[kMGTPE]] [--type |-t {bcdflpsD}]
20 \fB[[!] --gid|-g|--group|-G <gname>|<gid>]
21 \fB[[!] --uid|-u|--user|-U <uname>|<uid>]
22 \fB<directory|filename>\fR
27 .B lfs getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
28 \fB[--count | -c ] [--index | -i | --offset | -o ]
29 \fB[--size | -s ] [--pool | -p ] [--directory | -d ]
30 \fB[--recursive | -r] [--raw|-R] <dirname|filename> ...\fR
32 .B lfs setstripe [--size|-s stripe-size] [--count|-c stripe-cnt]
33 \fB[--index|-i|--offset|-o start_ost_index ] [--pool|-p <pool>]
34 \fB<directory|filename>\fR
36 .B lfs setstripe -d <dir>
38 .B lfs poollist <filesystem>[.<pool>] | <pathname>
40 .B lfs quota [-q] [-v] [-o obd_uuid|-I ost_idx|-i mdt_idx] [-u <uname>| -u <uid>|-g <gname>| -g <gid>] <filesystem>
42 .B lfs quota -t <-u|-g> <filesystem>
44 .B lfs quotacheck [-ug] <filesystem>
46 .B lfs quotachown [-i] <filesystem>
48 .B lfs quotaon [-ugf] <filesystem>
50 .B lfs quotaoff [-ug] <filesystem>
52 .B lfs quotainv [-ug] [-f] <filesystem>
54 .B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
55 \fB[--block-softlimit <block-softlimit>]
56 \fB[--block-hardlimit <block-hardlimit>]
57 \fB[--inode-softlimit <inode-softlimit>]
58 \fB[--inode-hardlimit <inode-hardlimit>]
61 .B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
62 \fB[-b <block-softlimit>] [-B <block-hardlimit>]
63 \fB[-i <inode-softlimit>] [-I <inode-hardlimit>]
66 .B lfs setquota -t <-u|-g>
67 \fB[--block-grace <block-grace>]
68 \fB[--inode-grace <inode-grace>]
71 .B lfs setquota -t <-u|-g>
72 \fB[-b <block-grace>] [-i <inode-grace>]
78 can be used to create a new file with a specific striping pattern, determine the default striping pattern, gather the extended attributes (object numbers and location) for a specific file. It can be invoked interactively without any arguments or in a non-interactive mode with one of the arguements supported.
80 The various options supported by lctl are listed and explained below:
83 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.
86 Indicate that changelog records previous to <endrec> are no longer of
87 interest to a particular consumer <id>, potentially allowing the MDT to
88 free up disk space. An <endrec> of 0 indicates the current last record.
89 Changelog consumers must be registered on the MDT node using \fBlctl\fR.
92 Display the status of MDS or OSTs (as specified in the command) or all the servers (MDS and OSTs)
94 .B df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
95 Report filesystem disk space usage or inodes usage (with \fB-i\fR) of each
96 MDT/OST, or a subset of OSTs if a pool is specified with \fB-p\fR. By default
97 print the usage of all mounted Lustre filesystems, otherwise if \fBpath\fR is
98 specified print only the usage of that filesystem. If \fB-h\fR is given, the
99 output is printed in \fIh\fRuman readable format, using SI base-2 suffixes
100 for \fBM\fRega-, \fBG\fRiga-, \fBT\fRera-, \fBP\fReta-, or \fBE\fRxabytes.
103 To search the directory tree rooted at the given dir/file name for the files that match the given parameters: \fB--atime\fR (file was last accessed N*24 hours ago), \fB--ctime\fR (file's status was last changed N*24 hours ago), \fB--mtime\fR (file's data was last modified N*24 hours ago), \fB--obd\fR (file has an object on a specific OST or OSTs), \fB--size\fR (file has size in bytes, or \fBk\fRilo-, \fBM\fRega-, \fBG\fRiga-, \fBT\fRera-, \fBP\fReta-, or \fBE\fRxabytes if a suffix is given), \fB--type\fR (file has the type: \fBb\fRlock, \fBc\fRharacter, \fBd\fRirectory, \fBp\fRipe, \fBf\fRile, sym\fBl\fRink, \fBs\fRocket, or \fBD\fRoor (Solaris)), \fB--uid\fR (file has specific numeric user ID), \fB--user\fR (file owned by specific user, numeric user ID allowed), \fB--gid\fR (file has specific group ID), \fB--group\fR (file belongs to specific group, numeric group ID allowed). The option \fB--maxdepth\fR limits find to decend at most N levels of directory tree. The options \fB--print\fR and \fB--print0\fR print full file name, followed by a newline or NUL character correspondingly. Using \fB!\fR before an option negates its meaning (\fIfiles NOT matching the parameter\fR). Using \fB+\fR before a numeric value means \fIfiles with the parameter OR MORE\fR, while \fB-\fR before a numeric value means \fIfiles with the parameter OR LESS\fR.
107 List all the OSTs for all mounted filesystems. If a \fBpath\fR is provided
108 that is located on a lustre mounted file system then only the OSTs belonging
109 to that filesystem are displayed.
111 .B getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
112 \fB[--count | -c ] [--index | -i | --offset | -o ]
113 \fB[--pool | -p ] [--size | -s ] [--directory | -d ]
114 \fB[--recursive | -r ] [--raw | -R ] <dirname|filename>\fR
116 List the striping information for a given filename or directory tree.
117 By default the stripe count, size, and offset will be returned. If you
118 only want specific striping information then the options of
125 can be used to return only the specific fields.
129 option is specified, the stripe information is printed without substituting the
130 filesystem's default values for unspecified fields. If the striping EA is not
131 set, 0, 0, and -1 will be printed for the stripe count, size, and offset
133 In the case where you only want details about the files' object id
136 option is used. Additional information available about striping can be
139 The default behavior when a directory is specified is to list the striping
140 information for all files within the specified directory (like
142 This can be expanded with
144 which will recurse into all subdirectories.
145 If you wish to get striping information for only the specified directory, then
147 can be used to limit the information, like
149 You can limit the returned files to those with objects on a specific OST with
152 .B setstripe [--count|-c stripe_cnt] [--size|-s stripe_size]
153 \fB[--index|-i|--offset|-o start_ost_index] [--pool <pool>]
154 \fB<dirname|filename>\fR
156 To create a new file, or set the directory default, with the specified striping parameters. The
158 is the number of OSTs to stripe a file over. A
160 of 0 means to use the filesystem-wide default stripe count (default 1), and a
162 of -1 means to stripe over all available OSTs. The
164 is the number of bytes to store on each OST before moving to the next OST. A
166 of 0 means to use the filesystem-wide default stripe size (default 1MB). The
168 is the OST index (starting at 0) on which to start striping for this file. A
170 of -1 allows the MDS to choose the starting index and it is strongly recommended, as this allows space and load balancing to be done by the MDS as needed. The
172 is the name of a predefined pool of OSTs (see
174 ) that will be used for striping. The
179 will be used as well; the
181 must be part of the pool or an error will be returned.
184 Delete the default striping on the specified directory.
187 .RI { filesystem }[ .poolname "] | {" pathname }
193 .IR filesystem.pool .
195 .B quota [-q] [-v] [-o obd_uuid|-i mdt_idx|-I ost_idx] [-u|-g <uname>|<uid>|<gname>|<gid>] <filesystem>
196 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 both user and group are omitted quotas for current uid/gid are shown. -v provides more verbose (with per-obd statistics) output. -q disables printing of additional descriptions (including column titles).
198 .B quota -t <-u|-g> <filesystem>
199 To display block and inode grace times for user (-u) or group (-g) quotas
202 To change files' owner and group on OSTs of the specified filesystem
204 .B quotacheck [-ugf] <filesystem>
205 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)
207 .B quotaon [-ugf] <filesystem>
208 To turn filesystem quotas on. Options specify quota for users (-u) groups (-g) and force (-f)
210 .B quotaoff [-ugf] <filesystem>
211 To turn filesystem quotas off. Options specify quota for users (-u) groups (-g) and force (-f)
213 .B quotainv [-ug] [-f] <filesystem>
214 Clear quota files (administrative quota files if used without -f, operational quota files otherwise), all of their quota entries, for (-u) users or (-g) groups; after quotainv one must use quotacheck before using quotas. DO NOT USE THIS COMMAND UNLESS YOU REALLY KNOW WHAT IT DOES. IT IS MAINLY FOR INTERNAL PURPOSES.
216 .B setquota <-u|-g> <uname>|<uid>|<gname>|<gid> [--block-softlimit <block-softlimit>] [--block-hardlimit <block-hardlimit>] [--inode-softlimit <inode-softlimit>] [--inode-hardlimit <inode-hardlimit>] <filesystem>
217 To set filesystem quotas for users or groups. Limits can be specified with -b, -k, -m, -g, -t, -p suffixes which specify units of 1, 2^10, 2^20, 2^30, 2^40 and 2^50 accordingly. Block limits unit is kilobyte (1024) by default and block limits are always kilobyte-grained (even if specified in bytes), see EXAMPLES
219 .B setquota -t [-u|-g] [--block-grace <block-grace>] [--inode-grace <inode-grace>] <filesystem>
220 To set filesystem quota grace times for users or groups. Grace time is specified in "XXwXXdXXhXXmXXs" format or as an integer seconds value, see EXAMPLES
223 Provides brief help on the various arguments
226 Quit the interactive lfs session
229 .B $ lfs setstripe -s 128k -c 2 /mnt/lustre/file1
230 This creates a file striped on two OSTs with 128kB on each stripe.
232 .B $ lfs setstripe -d /mnt/lustre/dir
233 This deletes a default stripe pattern on dir. New files will use the default striping pattern created therein.
235 .B $ lfs getstripe -v /mnt/lustre/file1
236 Lists the detailed object allocation of a given file
238 .B $ lfs find /mnt/lustre
239 Efficiently lists all files in a given directory and its subdirectories
241 .B $ lfs find /mnt/lustre -mtime +30 -type f -print
242 Recursively list all regular files in given directory more than 30 days old
244 .B $ lfs find --obd OST2-UUID /mnt/lustre/
245 Recursively list all files in a given directory that have objects on OST2-UUID.
247 .B $ lfs check servers
248 Check the status of all servers (MDT, OST)
254 Lists space usage per OST and MDT in human readable format.
257 Lists inode usage per OST and MDT
259 .B $ lfs df --pool <filesystem>[.<pool>] | <pathname>
260 List space or inode usage for a specific OST pool
262 .B $ lfs quota -u bob /mnt/lustre
263 List quotas of user `bob'
265 .B $ lfs quota -t -u /mnt/lustre
266 Show grace times for user quotas on /mnt/lustre
268 .B $ lfs quotachown -i /mnt/lustre
269 Change file owner and group
271 .B $ lfs quotacheck -ug /mnt/lustre
272 Quotacheck for user and group - will turn on quotas after making the check.
274 .B $ lfs quotaon -ug /mnt/lustre
275 Turn quotas of user and group on
277 .B $ lfs quotaoff -ug /mnt/lustre
278 Turn quotas of user and group off
280 .B $ lfs setquota -u bob --block-softlimit 2000000 --block-hardlimit 1000000 /mnt/lustre
281 Set quotas of user `bob': 1GB block quota hardlimit and 2 GB block quota softlimit
283 .B $ lfs setquota -t -u --block-grace 1000 --inode-grace 1w4d /mnt/lustre
284 Set grace times for user quotas: 1000 seconds for block quotas, 1 week and 4 days for inode quotas
286 The \fBlfs find\fR command isn't as comprehensive as \fBfind\fR(1).
287 Report bugs using http://bugzilla.lustre.org.
289 The lfs command is part of the Lustre filesystem. Contact http://www.lustre.org/