path: root/doc
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authorAlan D. Brunelle <>2009-02-13 12:38:54 -0500
committerAlan D. Brunelle <>2009-02-13 12:51:52 -0500
commitee27874baa43db7d697b5de72938e4ccb71bdabb (patch)
tree33ef4d21caa750d07dd6f05e0001fe3600ace74e /doc
parentc053af429559c8f4311cd773262ff223097cdcb3 (diff)
btt: Added no remap option
Trying to run btt on pre-2.6.19 kernels has problems handling the previous remap PDU - it did not include a proper device-from field. (Probably should have bumped the blktrace version when we did that.) This option just tosses those out as it just results in lots of crazy stuff being handled. Signed-off-by: Alan D. Brunelle <>
Diffstat (limited to 'doc')
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/btt.1 b/doc/btt.1
index fa437f9..45d6c0c 100644
--- a/doc/btt.1
+++ b/doc/btt.1
@@ -41,6 +41,8 @@ btt \- analyse block i/o traces produces by blktrace
[ \-Q <\fIoutput name\fR> | \-\-active\-queue\-depth=<\fIoutput name\fR> ]
+[ \-r | \-\-no\-remaps ]
[ \-s <\fIoutput name\fR> | \-\-seeks=<\fIoutput name\fR> ]
[ \-S <\fIinterval\fR> | \-\-iostat\-interval=<\fIinterval\fR> ]
@@ -245,6 +247,14 @@ The \-Q option allows one to output data files showing the time stamp
and the depth of active commands (those issued but not completed).
+.B \-r
+.B \-\-no\-remaps
+.RS 4
+Ignore remap traces; older kernels did not implement the full remap
.B \-s <\fIoutput name\fR>
.B \-\-seeks=<\fIoutput name\fR>