-.TH lctl 8 "2017 Jan 12" Lustre "configuration utilities"
+.TH LCTL 8 "2019-06-16" Lustre "configuration utilities"
.SH NAME
-lctl \- Low level Lustre filesystem configuration utility
+lctl \- Lustre filesystem administrator configuration tool
.SH SYNOPSIS
.br
.B lctl
.PP
.SS Device Operations
.TP
-.BI list_param " [-F|-R] <param_search ...>"
-List the Lustre or LNet parameter name
-.B -F
-Add '/', '@' or '=' for dirs, symlinks and writeable files, respectively.
-.br
-.B -R
-Recursively list all parameters under the specified parameter search string. If
-.I param_search
-is unspecified, all the parameters will be shown.
-.br
-.B Examples:
-.br
-.B
-# lctl list_param ost.*
-.br
- ost.OSS
-.br
- ost.num_refs
-.br
-.B
-# lctl list_param -F ost.* debug
-.br
- ost.OSS/
-.br
- ost.num_refs
-.br
- debug=
-.br
-.B
-# lctl list_param -R mdt
-.br
- mdt
-.br
- mdt.lustre-MDT0000
-.br
- mdt.lustre-MDT0000.capa
-.br
- mdt.lustre-MDT0000.capa_count
-.br
- mdt.lustre-MDT0000.capa_key_timeout
-.br
- mdt.lustre-MDT0000.capa_timeout
-.br
- mdt.lustre-MDT0000.commit_on_sharing
-.br
- mdt.lustre-MDT0000.evict_client
-.br
- ...
-.TP
-.BI get_param " [-F|-n|-N|-R] <parameter ...>"
-Get the value of Lustre or LNET parameter.
-.br
-.B -F
-When -N specified, add '/', '@' or '=' for directories, symlinks and writeable files, respectively.
-.br
-.br
-.B -n
-Print only the value and not parameter name.
-.br
-.B -N
-Print only matched parameter names and not the values. (Especially useful when using patterns.)
-.br
-.B -R
-Print all of the parameter names below the specified name.
-.br
-.B Examples:
-.br
-.B
-# lctl get_param ost.*
-.br
- ost.OSS
-.br
- ost.num_refs
-.br
-.B
-# lctl get_param -n debug timeout
-.br
- super warning dlmtrace error emerg ha rpctrace vfstrace config console
-.br
- 20
-.br
-.B
-# lctl get_param -N ost.* debug
-.br
- ost.OSS
-.br
- ost.num_refs
-.br
- debug
-.br
-lctl "get_param -NF" is equivalent to "list_param -F".
-.TP
-.BI set_param " [-n] [-P] [-d] <parameter=value ...>"
-Set the value of Lustre or LNET parameter.
-.br
-.B -n
-Disable printing of the key name when printing values.
-.br
-.B -P
-Set the parameter permanently, filesystem-wide.
-This parameters are only visible to 2.5.0 and later clients, older clients will not see these parameters.
-.br
-.B -d
-Remove the permanent setting (only with -P option)
-.br
-.B Examples:
-.br
-.B
-# lctl set_param fail_loc=0 timeout=20
-.br
- fail_loc=0
-.br
- timeout=20
-.br
-.B
-# lctl set_param -n fail_loc=0 timeout=20
-.br
- 0
-.br
- 20
-.br
-.B
-# lctl set_param -P osc.*.max_dirty_mb=32
-.br
-.TP
-.BI "set_param -F " <filename>
-.br
-Apply configuration file specified by <filename>
-.br
-File is in YAML format, created as an output from
-\fBlctl --device MGS llog_print <fsname>-client\fR or any other valid
-llog_file from the output of \fBlctl --device MGS llog_catlist\fR
-.br
-.TP
.BI conf_param " [-d] <device|fsname>.<parameter>=<value>"
Set a permanent configuration parameter for any device via the MGS. This
command must be run on the MGS node.
Abort the recovery process on a restarting MDT or OST device
.PP
.SS Changelogs
-.TP
-.BI changelog_register " [-n]"
-Register a new changelog user for a particular device. Changelog entries
-will not be purged beyond any registered users' set point. (See lfs changelog_clear.)
-.br
-.B -n
-Print only the ID of the newly registered user.
-.TP
-.BI changelog_deregister " <id>"
-Unregister an existing changelog user. If the user's "clear" record number
-is the minimum for the device, changelog records will be purged until the
-next minimum.
+Changelog user can be registered and deregistered on particular device.
+Changelog starts logging when any user is registered.
+
+For more details see:
+
+.PP
+\fBlctl-changelog_register\fR(8)
+.RS 4
+Register a new changelog user on specified MDT device with specified parameters.
+.RE
+.PP
+\fBlctl-changelog_deregister\fR(8)
+.RS 4
+Deregister an existing changelog user on the specified MDT.
+
.PP
.SS Nodemap
An identity mapping feature that facilitates mapping of client UIDs and GIDs to
.BR lustre (7)
filesystem package.
.SH SEE ALSO
+.BR lfs (1)
.BR lustre (7),
-.BR mkfs.lustre (8),
-.BR mount.lustre (8),
.BR lctl (8),
+.BR lctl-barrier (8),
+.BR lctl-changelog_deregister (8),
+.BR lctl-changelog_register (8),
+.BR lctl-get_param (8),
+.BR lctl-lcfg (8),
.BR lctl-lfsck-start (8),
.BR lctl-lfsck-stop (8),
.BR lctl-lfsck-query (8),
-.BR lctl-lcfg (8),
-.BR lctl-barrier (8),
+.BR lctl-list_param (8),
+.BR lctl-set_param (8),
.BR lctl-snapshot-create (8),
.BR lctl-snapshot-destroy (8),
.BR lctl-snapshot-modify (8),
.BR lctl-llog_print (8),
.BR lctl-network (8),
.BR lctl-nodemap-activate (8),
+.BR lctl-nodemap-add (8),
.BR lctl-nodemap-add-idmap (8),
.BR lctl-nodemap-add-range (8),
-.BR lctl-nodemap-add (8),
+.BR lctl-nodemap-del (8),
.BR lctl-nodemap-del-idmap (8),
.BR lctl-nodemap-del-range (8),
-.BR lctl-nodemap-del (8),
.BR lctl-nodemap-modify (8),
-.BR lfs (1)
+.BR lctl-pcc (8),
+.BR mkfs.lustre (8),
+.BR mount.lustre (8),
git://git.whamcloud.com / fs / lustre-release.git / blobdiff