Re: [SLUG] hard drive activity

From: Eben King (eben01@verizon.net)
Date: Sat Oct 18 2008 - 00:31:16 EDT


On Fri, 17 Oct 2008, james labocki wrote:

> On Fri, Oct 17, 2008 at 10:27 AM, Eben King <eben01@verizon.net> wrote:
>
>> Is there any way to see either what file is being written or who's doing
>> the writing, for a drive or even better a particular filesystem? I have
>> automount handling most of my filesystems (those that aren't vital for
>> Linux's operation, anyhow), and I find that sda5 (export) and sda6 (media)
>> are being remounted quite often, sda5 every 9:55 on average over the last 3
>> days, and sda6 less regularly. Maybe something in /proc or /sys?

> Use lsof

It shows nothing:

eben@pc:~$ lsof | grep export
eben@pc:~$ lsof | grep media
eben@pc:~$

Anyhow, it would only show open files; if an app did the equivalent of

echo foo > bar

then bar is only opened for the duration of the command. Even if I ran it
in a very tight loop, like

while : ; do
   lsof | grep export
done

it wouldn't be very fast, as it takes over 10 seconds to run.

-- 
-eben    QebWenE01R@vTerYizUonI.nOetP    royalty.mine.nu:81
LIBRA:  A big promotion is just around the corner for someone
much more talented than you.  Laughter is the very best medicine,
remember that when your appendix bursts next week.  -- Weird Al
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