1 .TH lfs 1 "2008 Mar 15" 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 check <mds|osts|servers>
10 .B lfs df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
12 .B lfs find [[!] --atime|-A [-+]N] [[!] --mtime|-M [-+]N]
13 \fB[[!] --ctime|-C [-+]N] [--maxdepth|-D N] [--name|-n pattern]
14 \fB[--print|-p] \fB[--print0|-P] [[!] --obd|-O <uuid[s]>]
15 \fB[[!] --size|-S [-+]N[kMGTPE]] [--type |-t {bcdflpsD}]
16 \fB[[!] --gid|-g|--group|-G <gname>|<gid>]
17 \fB[[!] --uid|-u|--user|-U <uname>|<uid>]
18 \fB<dirname|filename>\fR
22 .B lfs getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
23 \fB[--count | -c ] [--size | -s ] [--index | -i ]
24 \fB[--offset | -o ] [--pool | -p ] [--directory | -d ]
25 \fB[--recursive|-r] <dirname|filename>\fR
27 .B lfs setstripe [--size|-s stripe-size] [--count|-c stripe-cnt]
28 \fB[--offset|-o start-ost] [--pool|-p <pool>]
31 .B lfs setstripe -d <dir>
33 .B lfs poollist <filesystem>[.<pool>] | <pathname>
35 .B lfs quota [-q] [-v] [-o obd_uuid] [<-u|-g> <uname>|<uid>|<gname><gid>] <filesystem>
37 .B lfs quota -t <-u|-g> <filesystem>
39 .B lfs quotacheck [-ug] <filesystem>
41 .B lfs quotachown [-i] <filesystem>
43 .B lfs quotaon [-ugf] <filesystem>
45 .B lfs quotaoff [-ug] <filesystem>
47 .B lfs quotainv [-ug] [-f] <filesystem>
49 .B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
50 \fB[--block-softlimit <block-softlimit>]
51 \fB[--block-hardlimit <block-hardlimit>]
52 \fB[--inode-softlimit <inode-softlimit>]
53 \fB[--inode-hardlimit <inode-hardlimit>]
56 .B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
57 \fB[-b <block-softlimit>] [-B <block-hardlimit>]
58 \fB[-i <inode-softlimit>] [-I <inode-hardlimit>]
61 .B lfs setquota -t <-u|-g>
62 \fB[--block-grace <block-grace>]
63 \fB[--inode-grace <inode-grace>]
66 .B lfs setquota -t <-u|-g>
67 \fB[-b <block-grace>] [-i <inode-grace>]
73 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, find files with specific attributes, list OST information, or set quota limits. It can be invoked interactively without any arguments or in a non-interactive mode with one of the arguements supported.
75 The various options supported by lctl are listed and explained below:
78 Display the status of MDS or OSTs (as specified in the command) or all the servers (MDS and OSTs)
80 .B df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
81 Report filesystem disk space usage or inodes usage (with \fB-i\fR) of each
82 MDT/OST, or a subset of OSTs if a pool is specified with \fB-p\fR. By default
83 print the usage of all mounted Lustre filesystems, otherwise if \fBpath\fR is
84 specified print only the usage of that filesystem. If \fB-h\fR is given, the
85 output is printed in \fIh\fRuman readable format, using SI base-2 suffixes
86 for \fBM\fRega-, \fBG\fRiga-, \fBT\fRera-, \fBP\fReta-, or \fBE\fRxabytes.
89 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.
92 List all the OSTs for the filesystem
94 .B getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
95 \fB[--count | -c ] [--size | -s ] [--index | -i ]
96 \fB[--offset | -o ] [--pool | -p ] [--directory | -d ]
97 \fB[--recursive|-r] <dirname|filename>\fR
99 To list the striping information for a given filename or directory. By default the stripe count, size, and offset will be returned. If you only want specific striping information then the options of \fB--count\fR,\fB--size\fR,\fB--index\fR or \fB--offset\fR plus various combinations of these options can be used to retrieve only what you want. What pools a file belong to can also be obtained with \fB--pool\fR. In the case where you only want details about the files object id information then the \fB--quiet\fR option is used. Additional information available about striping can be displayed with \fB--verbose\fR. The default behavior of lfs getstripe used to retrieve data about a directory is to list all the contents of that directory. If you wish to inquire only about that directory then \fB--directory\fR,can be used to list directory entries instead of its contents in the same manner as ls -d. This can be expanded with \fB--recursive\fR which will recurse into all subdirectories. You can filter the search to return only files that has a object on a specific OST with \fB--obd\fR.
101 .B setstripe [--size stripe-size] [--count stripe-cnt]
102 \fB[--offset start-ost] [--pool <pool>]\fR
104 To create a new file, or set the directory default, with the specified striping parameters. The
106 is the number of OSTs to stripe a file over. A
108 of 0 means to use the filesystem-wide default stripe count (default 1), and a
110 of -1 means to stripe over all available OSTs. The
112 is the number of bytes to store on each OST before moving to the next OST. A
114 of 0 means to use the filesystem-wide default stripe size (default 1MB). The
116 is the OST index (base 10, starting at 0) on which to start striping for this file. A
118 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
120 is the name of a predefined pool of OSTs (see
122 ) that will be used for striping. The
123 .I stripe-count, stripe-size, start-ost
124 will be used as well; the
126 must be part of the pool or an error will be returned.
129 Delete the default striping on the specified directory.
131 .B poollist <filesystem>[.<pool>] | <pathname>
132 List the pools in \fBfilesystem\fR or \fBpathname\fR, or the OSTs in \fBfilesystem.pool\fR
135 To change files' owner and group on OSTs of the specified filesystem
137 .B quotacheck [-ugf] <filesystem>
138 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)
140 .B quotaon [-ugf] <filesystem>
141 To turn filesystem quotas on. Options specify quota for users (-u) groups (-g) and force (-f)
143 .B quotaoff [-ugf] <filesystem>
144 To turn filesystem quotas off. Options specify quota for users (-u) groups (-g) and force (-f)
146 .B quotainv [-ug] [-f] <filesystem>
147 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.
149 .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>
150 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
152 .B setquota -t <-u|-g> [--block-grace <block-grace>] [--inode-grace <inode-grace>] <filesystem>
153 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
155 .B quota [-q] [-v] [-o obd_uuid] [ -u|-g <uname|uid|gname|gid> ] <filesystem>
156 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).
158 .B quota -t <-u|-g> <filesystem>
159 To display block and inode grace times for user (-u) or group (-g) quotas
162 Provides brief help on the various arguments
165 Quit the interactive lfs session
168 .B $ lfs setstripe -s 128k -c 2 /mnt/lustre/file1
169 This creates a file striped on two OSTs with 128kB on each stripe.
171 .B $ lfs setstripe -d /mnt/lustre/dir
172 This deletes a default stripe pattern on dir. New files will use the default striping pattern created therein.
174 .B $ lfs getstripe -v /mnt/lustre/file1
175 Lists the detailed object allocation of a given file
177 .B $ lfs find /mnt/lustre
178 Efficiently lists all files in a given directory and its subdirectories
180 .B $ lfs find /mnt/lustre -mtime +30 -type f -print
181 Recursively list all regular files in given directory more than 30 days old
183 .B $ lfs find --obd OST2-UUID /mnt/lustre/
184 Recursively list all files in a given directory that have objects on OST2-UUID.
186 .B $ lfs check servers
187 Check the status of all servers (MDT, OST)
193 Lists space usage per OST and MDT in human readable format.
196 Lists inode usage per OST and MDT
198 .B $ lfs df --pool <filesystem>[.<pool>] | <pathname>
199 List space or inode usage for a specific OST pool
201 .B $ lfs quotachown -i /mnt/lustre
202 Change file owner and group
204 .B $ lfs quotacheck -ug /mnt/lustre
205 Quotacheck for user and group - will turn on quotas after making the check.
207 .B $ lfs quotaon -ug /mnt/lustre
208 Turn quotas of user and group on
210 .B $ lfs quotaoff -ug /mnt/lustre
211 Turn quotas of user and group off
213 .B $ lfs setquota -u bob --block-softlimit 2000000 --block-hardlimit 1000000 /mnt/lustre
214 Set quotas of user `bob': 1GB block quota hardlimit and 2 GB block quota softlimit
216 .B $ lfs setquota -t -u --block-grace 1000 --inode-grace 1w4d /mnt/lustre
217 Set grace times for user quotas: 1000 seconds for block quotas, 1 week and 4 days for inode quotas
219 .B $ lfs quota -u bob /mnt/lustre
220 List quotas of user `bob'
222 .B $ lfs quota -t -u /mnt/lustre
223 Show grace times for user quotas on /mnt/lustre
225 The \fBlfs find\fR command isn't as comprehensive as \fBfind\fR(1).
226 Report bugs using http://bugzilla.lustre.org.
228 The lfs command is part of the Lustre filesystem. Contact http://www.lustre.org/