e4defrag: update man page about -c option
RFC PATCH v2 4/4 e4defrag: update man page about -c option
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 <[email protected]>
---
e4defrag.8.in | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-)
misc/e4defrag.8.in +9 -5
@@ -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