.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.
+next minimum.
.PP
.SS LFSCK
An on-line Lustre consistency check and repair tool.
.TP
-.B lfsck_start \fR<-M | --device MDT_device>
- \fR[-e | --error <error_handle>]
- \fR[-h | --help]
- \fR[-n | --dryrun <switch>]
- \fR[-r | --reset]
- \fR[-s | --speed <speed_limit>]
- \fR[-t | --type <lfsck_type[,lfsck_type...]>]
-.br
-Start LFSCK on the specified MDT device with specified parameters.
+.B lfsck_start \fR<-M | --device [MDT,OST]_device>
+ \fR[-A | --all] [-c | --create_ostobj [on | off]]
+ \fR[-e | --error <continue | abort>] [-h | --help]
+ \fR[-n | --dryrun [on | off]] [-o | --orphan]
+ \fR[-r | --reset] [-s | --speed speed_limit]
+ \fR[-t | --type lfsck_type[,lfsck_type...]]
+ \fR[-w | --window_size size]
+.br
+Start LFSCK on the specified MDT or OST device with specified parameters.
+.TP
+ -M, --device <MDT,OST_device>
+The MDT or OST device to start LFSCK/scrub on.
+.TP
+ -A, --all
+Start LFSCK on all MDT devices.
.TP
- -M, --device <MDT_device>
-The MDT device to check.
+ -c, --create_ostobj [on | off]
+Create the lost OST-object for dangling LOV EA: 'off'(default) or 'on'. Under
+default mode, when the LFSCK find some MDT-object with dangling reference, it
+will report the inconsistency but without repairing. Otherwise the LFSCK will
+re-create the missed OST-object.
.TP
-e, --error <error_handle>
With error_handle as 'abort' LFSCK will stop if a repair is impossible. If no
value is specified, the saved value will be used if resuming from a checkpoint.
-Otherwise the default behavior is to 'continue' if a rapair is impossible.
+Otherwise the default behavior is to 'continue' if a repair is impossible.
.TP
-h, --help
Show this help.
.TP
- -n, --dryrun <on|off>
-Perform a trial run with no changes made.
+ -n, --dryrun [on | off]
+Perform a trial run with no changes made. Default is 'off'
+.TP
+ -o, --orphan
+Handle orphan objects, such as orphan OST-objects for layout LFSCK.
.TP
-r, --reset
-Set the current position of LFSCK progress to the beginning of the specified
-MDT.
+Set the current position of object iteration to the beginning of the specified
+device. The non-specified parameters will also be reset as default. By default
+the iterator will resume the scanning from the last checkpoint (position), and
+other non-specified parameters will be the same as former non-completed run.
.TP
-s, --speed <speed_limit>
Set the upper limit of LFSCK processing in objects per second. If no value is
the default value of 0 is used. 0 means run as fast as possible.
.TP
-t, --type <lfsck_type[,lfsck_type...]>
-Specify the type of LFSCK to execute. By default, OI Scrub is executed.
-Alternative types include FID-in-dirent and linkEA (namespace).
+The type of LFSCK checking/repair to execute. By default, the LFSCK
+component(s) which ran last time and did not finish or the component(s)
+corresponding to some known system inconsistency, will be started. Anytime
+LFSCK is triggered on an ldiskfs MDT or OST, the OI Scrub is executed.
+Alternative types include FID-in-dirent and linkEA (namespace) and MDT-OST
+inconsistency (layout).
+.TP
+ -w, --window_size <size>
+The window size for async requests pipeline.
+.TP
+.B lfsck_stop \fR<-M | --device [MDT,OST]_device> [-A | --all] [-h | --help]
+Stop LFSCK on the specified MDT or OST device.
.TP
-.B lfsck_stop \fR<-M | --device MDT_device> [-h | --help]
-Stop LFSCK on the specified MDT device.
+ -M, --device <[MDT,OST]_device>
+The MDT or OST device to stop LFSCK/scrub on.
.TP
- -M, --device <MDT_device>
-The MDT device.
+ -A, --all
+Stop LFSCK on all devices.
.TP
-h, --help
Show this help.
git://git.whamcloud.com / fs / lustre-release.git / blobdiff