diff options
Diffstat (limited to 'man')
| -rw-r--r-- | man/btrfs.8.in | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/man/btrfs.8.in b/man/btrfs.8.in index 94f4ffea..08e5fd79 100644 --- a/man/btrfs.8.in +++ b/man/btrfs.8.in @@ -47,11 +47,11 @@ btrfs \- control a btrfs filesystem .PP \fBbtrfs\fP \fBreplace cancel\fP \fI<path>\fP .PP -\fBbtrfs\fP \fBscrub start\fP [-Bdqru] {\fI<path>\fP|\fI<device>\fP} +\fBbtrfs\fP \fBscrub start\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP} .PP \fBbtrfs\fP \fBscrub cancel\fP {\fI<path>\fP|\fI<device>\fP} .PP -\fBbtrfs\fP \fBscrub resume\fP [-Bdqru] {\fI<path>\fP|\fI<device>\fP} +\fBbtrfs\fP \fBscrub resume\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP} .PP \fBbtrfs\fP \fBscrub status\fP [-d] {\fI<path>\fP|\fI<device>\fP} .PP @@ -355,11 +355,16 @@ Cancel a running device replace operation. .TP \fBscrub start\fP [-Bdqru] {\fI<path>\fP|\fI<device>\fP} +\fBscrub start\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP} Start a scrub on all devices of the filesystem identified by \fI<path>\fR or on a single \fI<device>\fR. Without options, scrub is started as a background process. Progress can be obtained with the \fBscrub status\fR command. Scrubbing involves reading all data from all disks and verifying checksums. Errors are corrected along the way if possible. +.IP +The default IO priority of scrub is the idle class. The priority can be configured similar to the +.BR ionice (1) +syntax. .RS \fIOptions\fR @@ -373,6 +378,14 @@ Quiet. Omit error messages and statistics. Read only mode. Do not attempt to correct anything. .IP -u 5 Scrub unused space as well. (NOT IMPLEMENTED) +.IP -c 5 +Set IO priority class (see +.BR ionice (1) +manpage). +.IP -n 5 +Set IO priority classdata (see +.BR ionice (1) +manpage). .RE .TP @@ -384,7 +397,7 @@ If a \fI<device>\fR is given, the corresponding filesystem is found and \fBscrub cancel\fP behaves as if it was called on that filesystem. .TP -\fBscrub resume\fP [-Bdqru] {\fI<path>\fP|\fI<device>\fP} +\fBscrub resume\fP [-Bdqru] [-c ioprio_class -n ioprio_classdata] {\fI<path>\fP|\fI<device>\fP} Resume a canceled or interrupted scrub cycle on the filesystem identified by \fI<path>\fR or on a given \fI<device>\fR. Does not start a new scrub if the last scrub finished successfully. @@ -446,4 +459,5 @@ and not suitable for any uses other than benchmarking and review. Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for further details. .SH SEE ALSO -.BR mkfs.btrfs (8) +.BR mkfs.btrfs (8), +.BR ionice (1) |