-.TH lfs 1 "2003 Oct 29" Lustre "configuration utilities"
+.TH lfs 1 "2009 Jan 29" Lustre "user utilities"
.SH NAME
-lfs \- Lustre utility to create a file with specific striping pattern, find the striping pattern of exiting files
+lfs \- Lustre utility to create a file with specific striping pattern, find the striping pattern of existing files
.SH SYNOPSIS
.br
.B lfs
.br
-.B lfs find [--atime|-A N] [--mtime|-M N] [--ctime|-C N] [--maxdepth|-D N]
- \fB[--print0|-P] [--print|-p] [--obd|-O <uuid>] <dir/file>\fR
+.B lfs changelog [--follow] <mdtname> [startrec [endrec]]
.br
-.B lfs find [--quiet|-q] [--verbose|-v] [--recursive|-r] <dir|file>
+.B lfs changelog_clear <mdtname> <id> <endrec>
+.br
+.B lfs check <mds|osts|servers>
+.br
+.B lfs df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
+.br
+.B lfs find [[!] --atime|-A [-+]N] [[!] --mtime|-M [-+]N]
+ \fB[[!] --ctime|-C [-+]N] [--maxdepth|-D N] [--name|-n pattern]
+ \fB[--print|-p] \fB[--print0|-P] [[!] --obd|-O <uuid[s]>]
+ \fB[[!] --size|-S [-+]N[kMGTPE]] [--type |-t {bcdflpsD}]
+ \fB[[!] --gid|-g|--group|-G <gname>|<gid>]
+ \fB[[!] --uid|-u|--user|-U <uname>|<uid>]
+ \fB<dirname|filename>\fR
+.br
+.B lfs osts
+.RB [ path ]
.br
.B lfs getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
- \fB[--recursive|-r] <dir/file>\fR
+ \fB[--count | -c ] [--index | -i | --offset | -o ]
+ \fB[--size | -s ] [--pool | -p ] [--directory | -d ]
+ \fB[--recursive|-r] <dirname|filename> ...\fR
.br
-.B lfs setstripe <filename|dirname> <stripe-size> <start-ost> <stripe-cnt>
+.B lfs setstripe [--size|-s stripe-size] [--count|-c stripe-cnt]
+ \fB[--index|-i|--offset|-o start_ost_index ] [--pool|-p <pool>]
+ \fB<dirname|filename>\fR
.br
-.B lfs setstripe <filename|dirname> [--size|-s stripe-size] [--index|-i start-ost] [--count|-c stripe-cnt]
+.B lfs setstripe -d <dir>
.br
-.B lfs setstripe -d <dirname>
+.B lfs poollist <filesystem>[.<pool>] | <pathname>
.br
-.B lfs quotachown [-i] <filesystem>
+.B lfs quota [-q] [-v] [-o obd_uuid|-I ost_idx|-i mdt_idx] [-u <uname>| -u <uid>|-g <gname>| -g <gid>] <filesystem>
+.br
+.B lfs quota -t <-u|-g> <filesystem>
.br
.B lfs quotacheck [-ug] <filesystem>
.br
+.B lfs quotachown [-i] <filesystem>
+.br
.B lfs quotaon [-ugf] <filesystem>
.br
.B lfs quotaoff [-ug] <filesystem>
.br
-.B lfs setquota [-u|-g] <name> <block-softlimit> <block-hardlimit>
- \fB<inode-softlimit> <inode-hardlimit> <filesystem>\fR
+.B lfs quotainv [-ug] [-f] <filesystem>
+.br
+.B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
+ \fB[--block-softlimit <block-softlimit>]
+ \fB[--block-hardlimit <block-hardlimit>]
+ \fB[--inode-softlimit <inode-softlimit>]
+ \fB[--inode-hardlimit <inode-hardlimit>]
+ \fB<filesystem>\fR
.br
-.B lfs quota [-o obd_uuid] [-u|-g] <name> <filesystem>
+.B lfs setquota <-u|--user|-g|--group> <uname|uid|gname|gid>
+ \fB[-b <block-softlimit>] [-B <block-hardlimit>]
+ \fB[-i <inode-softlimit>] [-I <inode-hardlimit>]
+ \fB<filesystem>\fR
.br
-.B lfs check <mds| osts| servers>
+.B lfs setquota -t <-u|-g>
+ \fB[--block-grace <block-grace>]
+ \fB[--inode-grace <inode-grace>]
+ \fB<filesystem>\fR
.br
-.B lfs df [-i] [-h] [path]
+.B lfs setquota -t <-u|-g>
+ \fB[-b <block-grace>] [-i <inode-grace>]
+ \fB<filesystem>\fR
+.br
+.B lfs help
.SH DESCRIPTION
.B lfs
-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.
+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.
.SH OPTIONS
The various options supported by lctl are listed and explained below:
.TP
-.B setstripe
-To create a new file with a specific striping pattern
+.B changelog
+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.
+.TP
+.B changelog_clear
+Indicate that changelog records previous to <endrec> are no longer of
+interest to a particular consumer <id>, potentially allowing the MDT to
+free up disk space. An <endrec> of 0 indicates the current last record.
+Changelog consumers must be registered on the MDT node using \fBlctl\fR.
+.TP
+.B check
+Display the status of MDS or OSTs (as specified in the command) or all the servers (MDS and OSTs)
+.TP
+.B df [-i] [-h] [--pool|-p <fsname>[.<pool>] [path]
+Report filesystem disk space usage or inodes usage (with \fB-i\fR) of each
+MDT/OST, or a subset of OSTs if a pool is specified with \fB-p\fR. By default
+print the usage of all mounted Lustre filesystems, otherwise if \fBpath\fR is
+specified print only the usage of that filesystem. If \fB-h\fR is given, the
+output is printed in \fIh\fRuman readable format, using SI base-2 suffixes
+for \fBM\fRega-, \fBG\fRiga-, \fBT\fRera-, \fBP\fReta-, or \fBE\fRxabytes.
.TP
.B find
-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). The option \fB--maxdepth\fR allows 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 and null character correspondingly. Using one of these options works in the new (filename only) mode.
+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.
.TP
-.B find
-To list the striping info for a given filename or files in a directory or recursively for all files in a directory tree use one of the following options: \fB[--quiet|-q] [--verbose|-v] [--recursive|-r]\fR. If one of these options is given find works in old (obsolete, please use getstripe instead) filename and striping mode.
+.B osts
+.RB [ path ]
+List all the OSTs for all mounted filesystems. If a \fBpath\fR is provided
+that is located on a lustre mounted file system then only the OSTs belonging
+to that filesystem are displayed.
+.TP
+.B getstripe [--obd|-O <uuid>] [--quiet|-q] [--verbose|-v]
+ \fB[--count | -c ] [--index | -i | --offset | -o ]
+ \fB[--pool | -p ] [--size | -s ] [--directory | -d ]
+ \fB[--recursive|-r] <dirname|filename>\fR
+.br
+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.
.TP
-.B getstripe
-To list the striping info for given filename or files in a directory or recursively for all files in a directory tree. It can also be used to list the files that have objects on a specific OST.
+.B setstripe [--count|-c stripe_cnt] [--size|-s stripe_size]
+ \fB[--index|-i|--offset|-o start_ost_index] [--pool <pool>]
+ \fB<dirname|filename>\fR
+.br
+To create a new file, or set the directory default, with the specified striping parameters. The
+.I stripe_count
+is the number of OSTs to stripe a file over. A
+.I stripe_count
+of 0 means to use the filesystem-wide default stripe count (default 1), and a
+.I stripe_count
+of -1 means to stripe over all available OSTs. The
+.I stripe_size
+is the number of bytes to store on each OST before moving to the next OST. A
+.I stripe_size
+of 0 means to use the filesystem-wide default stripe size (default 1MB). The
+.I start_ost_index
+is the OST index (starting at 0) on which to start striping for this file. A
+.I start_ost_index
+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
+.I pool
+is the name of a predefined pool of OSTs (see
+.B lctl
+) that will be used for striping. The
+.I stripe_count, stripe_size, and start_ost_index
+will be used as well; the
+.I start_ost_index
+must be part of the pool or an error will be returned.
+.TP
+.B setstripe -d
+Delete the default striping on the specified directory.
+.TP
+.B poollist <filesystem>[.<pool>] | <pathname>
+List the pools in \fBfilesystem\fR or \fBpathname\fR, or the OSTs in \fBfilesystem.pool\fR
+.TP
+.B quota [-q] [-v] [-o obd_uuid|-i mdt_idx|-I ost_idx] [-u|-g <uname>|<uid>|<gname>|<gid>] <filesystem>
+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).
+.TP
+.B quota -t <-u|-g> <filesystem>
+To display block and inode grace times for user (-u) or group (-g) quotas
.TP
.B quotachown
To change files' owner and group on OSTs of the specified filesystem
.B quotaoff [-ugf] <filesystem>
To turn filesystem quotas off. Options specify quota for users (-u) groups (-g) and force (-f)
.TP
-.B setquota [-u|-g] <name> <block-softlimit> <block-hardlimit> <inode-softlimit> <inode-hardlimit> <filesystem>
-To set filesystem quotas for users or groups. Limits are specific as blocks and inodes, see EXAMPLES
+.B quotainv [-ug] [-f] <filesystem>
+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.
.TP
-.B quota [-o obd_uuid] [-u|-g] <name> <filesystem>
-To display disk usage and limits, either for the full filesystem, or for objects on a specific obd. A user or group name must be specified.
-.TP
-.B check
-Display the status of MDS or OSTs (as specified in the command) or all the servers (MDS and OSTs)
-.TP
-.B osts
-List all the OSTs for the filesystem
+.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>
+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
.TP
-.B df
-Report filesystem disk space usage or inodes usage of each MDT/OST.
+.B setquota -t [-u|-g] [--block-grace <block-grace>] [--inode-grace <inode-grace>] <filesystem>
+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
.TP
.B help
Provides brief help on the various arguments
Quit the interactive lfs session
.SH EXAMPLES
.TP
-.B $ lfs setstripe /mnt/lustre/file1 131072 -1 2
-This creats a file striped on two OSTs with 128kB on each stripe.
+.B $ lfs setstripe -s 128k -c 2 /mnt/lustre/file1
+This creates a file striped on two OSTs with 128kB on each stripe.
.TP
.B $ lfs setstripe -d /mnt/lustre/dir
This deletes a default stripe pattern on dir. New files will use the default striping pattern created therein.
.TP
-.B $ lfs find /mnt/lustre/file1
-Lists the object allocation of a given file
+.B $ lfs getstripe -v /mnt/lustre/file1
+Lists the detailed object allocation of a given file
.TP
-.B $ lfs find /mnt/lustre/
-Lists the object allocationss of all files in a given directory
+.B $ lfs find /mnt/lustre
+Efficiently lists all files in a given directory and its subdirectories
.TP
-.B $ lfs find -r /mnt/lustre/
-Recursively list the objects of all files in a given directory tree
+.B $ lfs find /mnt/lustre -mtime +30 -type f -print
+Recursively list all regular files in given directory more than 30 days old
.TP
-.B $ lfs find -r --obd OST2-UUID /mnt/lustre/
+.B $ lfs find --obd OST2-UUID /mnt/lustre/
Recursively list all files in a given directory that have objects on OST2-UUID.
+.tP
+.B $ lfs check servers
+Check the status of all servers (MDT, OST)
+.TP
+.B $ lfs osts
+List all the OSTs
+.TP
+.B $ lfs df -h
+Lists space usage per OST and MDT in human readable format.
+.TP
+.B $ lfs df -i
+Lists inode usage per OST and MDT
+.TP
+.B $ lfs df --pool <filesystem>[.<pool>] | <pathname>
+List space or inode usage for a specific OST pool
+.TP
+.B $ lfs quota -u bob /mnt/lustre
+List quotas of user `bob'
+.TP
+.B $ lfs quota -t -u /mnt/lustre
+Show grace times for user quotas on /mnt/lustre
.TP
.B $ lfs quotachown -i /mnt/lustre
Change file owner and group
.B $ lfs quotaoff -ug /mnt/lustre
Turn quotas of user and group off
.TP
-.B $ lfs setquota -u bob 0 1000000 0 10000 /mnt/lustre
-Set quotas of user `bob': 1GB block quota and 10,000 file quota
-.TP
-.B $ lfs quota -u bob /mnt/lustre
-List quotas of user `bob'
+.B $ lfs setquota -u bob --block-softlimit 2000000 --block-hardlimit 1000000 /mnt/lustre
+Set quotas of user `bob': 1GB block quota hardlimit and 2 GB block quota softlimit
.TP
-.B $ lfs check servers
-Check the status of all servers (MDT, OST)
-.TP
-.B $ lfs osts
-List all the OSTs
-.TP
-.B $ lfs df -i
-Lists inode consumpton per OST and MDT
+.B $ lfs setquota -t -u --block-grace 1000 --inode-grace 1w4d /mnt/lustre
+Set grace times for user quotas: 1000 seconds for block quotas, 1 week and 4 days for inode quotas
.SH BUGS
-None are known.
+The \fBlfs find\fR command isn't as comprehensive as \fBfind\fR(1).
+Report bugs using http://bugzilla.lustre.org.
+.SH AUTHOR
+The lfs command is part of the Lustre filesystem. Contact http://www.lustre.org/
+.SH SEE ALSO
+.BR lctl (8),
+.BR lustre (7)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff