tracking process that access a LVM on redhat

[stef35]

hello all

i was wondering if one of you had already made an add on about tracking the processes  that access the most a file system on redhat.

I have a LVM that is 100% busy and i would like to know how it is used (which processes access it and how:(r,w)°

Thank you for any suggestions

Stephane

[Dimitri]

Hi Stephane,

all you need is DTrace ;-))

otherwise, the first reflex is "perf top" to see what is really active
and may clarify the source of activity..

then scanning /proc/PID/io for most active processes on IO activity..
(in the pas I wanted to add an IO column to my psSTAT for Linux, but
time was short and "io" info within /proc was not yet widely available
ob Linux distros)..

Rgds,
-Dimitri

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[stephane]

Cheers Dimitry

I had found fuser command, bit it seems dtrace is more powerfull.