Add the description of the size per one extent and the maximum extent size in ext4 into e4defrag man page. Signed-off-by: Kazuya Mio <k-mio@xxxxxxxxxxxxx> --- e4defrag.8.in | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/misc/e4defrag.8.in b/misc/e4defrag.8.in index 3ba8570..75e1bc9 100644 --- a/misc/e4defrag.8.in +++ b/misc/e4defrag.8.in @@ -35,16 +35,20 @@ point. .SH OPTIONS .TP .B \-c -Get the fragmentation count and calculate fragmentation score based on it -before and after defrag. By seeing this score, we can determine whether we -should execute +Get a current fragmentation count and an ideal fragmentation count, and +calculate fragmentation score based on them. By seeing this score, we can +determine whether we should execute .B e4defrag to .IR target . When used with .B \-v -option, the fragmentation count before and after defrag is printed for each -file. +option, the current fragmentation count and the ideal fragmentation count are +printed for each file. +.IP +Also this option outputs the average data size in one extent. If you see it, +you'll find the file has ideal extents or not. Note that the maximum extent +size is 131072KB in ext4 filesystem (if block size is 4KB). .IP If this option is specified, .I target -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
