Explicitly declare that the 'start' and 'end' arguments to fsmap require one of -d, -l, or -r to select the data, log, or realtime device, and fix misspelled command name while we're at it. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- io/fsmap.c | 2 ++ man/man8/xfs_io.8 | 7 +++++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/io/fsmap.c b/io/fsmap.c index 9e70c7b..448fb53 100644 --- a/io/fsmap.c +++ b/io/fsmap.c @@ -48,6 +48,8 @@ fsmap_help(void) " -n -- query n extents at a time.\n" " -m -- output machine-readable format.\n" " -v -- Verbose information, show AG and offsets. Show flags legend on 2nd -v\n" +"\n" +"The optional start and end arguments require one of -d, -l, or -r to be set.\n" "\n")); } diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8 index c87db0b..0082ca9 100644 --- a/man/man8/xfs_io.8 +++ b/man/man8/xfs_io.8 @@ -323,6 +323,9 @@ and .I end arguments can be used to constrain the output to a particular range of disk blocks. +If these two options are specified, exactly one of +.BR "-d" ", " "-l" ", or " "-r" +must also be set. .RE .RS 1.0i .PD 0 @@ -372,12 +375,12 @@ for other filesystem metadata. .TP .BI \-n " num_extents" If this option is given, -.B xfs_fsmap +.B fsmap obtains the extent list of the file in groups of .I num_extents extents. In the absence of -.BR \-n ", " xfs_fsmap +.BR "-n" ", " "fsmap" queries the system for extents in groups of 131,072 records. .TP .B \-v -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
