Hi,
I am trying to use blktrace (mentioned in the documentation for CONFIG_BLK_DEV_IO_TRACE) to collect some disk I/O statistics.
It works at first, but every time I kill it with Ctrl-C and then try to restart it, the program aborts with the message
BLKTRACESETUP: No such file or directory
Failed to start trace on /dev/hda
my exact sequence of commands is this
$ sudo blktrace -d /dev/hda -o - | blkparse -i - | tee trace-log
(some output...)
(Ctrl-C)
$ sudo blktrace -d /dev/hda -o - | blkparse -i - | tee trace-log2
(abort...)
I 'git clone' the blktrace source code from git://git.kernel.dk/blktrace.git and compiled it on my machine, the last 'git log' item is like this
commit 2885ecaa19a04ab9980896d1a849cdae9238b7d1
Author: Vincent Legoll <vincent.legoll@xxxxxxxxx>
Date: Mon Jul 30 15:23:43 2007 +0200
...
output from 'blktrace --version'
blktrace version 0.99.2
I think this will be enough for you to identify my blktrace version.
any idea about this problem?
