Does tomcat use some kind of virtualization technology or sharing/mounting network filesystem?

[Astghik Mkrtchyan <mk...@gmail.com>]

Hi All!

 On Ubuntu 10.04 (65 bit, Desktop) I've set up Tomcat 6.0.26.  No additional
and unnecessary applications are running on that OS. Maybe only mail server
is a little bit heavy. On Tomcat I'm running only one application which is
actually search engine(I use Compass framework), indexed pages I'm keeping
as a file system on Tomcat dir (they have reasonable sizes, so no need now
to think up about server storage space) I have 2 mounted devices / & /usr.
But there is one issue I have. It's ok when I deploy the project on
app server (OS & all app installations were new at that point) . For about
1-2 weeks I got 800 GB disk usage (have seen it on webmin) of  1 terabyte
instead of max~~~ 200MB usage. Of course I forgot to remove old log files of
app server(logs are very large as the customer wanted to see everything is
possible to show), after deleting of them I still got smth about 600-700GB
disk space usage. I reboot my app server nothing was changed, then I reboot
the computer, I still had for 400-500 GB used(of /usr) . Then I started to
check all dirs sizes(du  --max-depth=1 -h), nothing suspicious I got.  Tomcat
is in /usr/share/. Didn't find anything strange in its all dirs too. This
can be only the result of search engine indexing, but nothing strange in
tomcat's temp dir again. But when I stopped tomcat and reboot the server, I
got the real usage size 46 GB.

My question is following:

Does tomcat use some kind of virtualization technology or sharing/mounting
network filesystem? Or what kind of reason can be for such behavior and how
to fix?

Thanks!
Astghik

Re: Does tomcat use some kind of virtualization technology or sharing/mounting network filesystem?

[David Smith <da...@cornell.edu>]

Tomcat doesn't do anything that would cause that behavior.  It's disk
writing is mostly limited to just writing log files, expanding .war
files and compiling jsp files.  Ubuntu has a tool called "Disk Usage
Analyzer" which should be able to help you sort out what's going on with
your system.

--David


On 2/7/2011 5:19 AM, Astghik Mkrtchyan wrote:
> Hi All!
>
>  On Ubuntu 10.04 (65 bit, Desktop) I've set up Tomcat 6.0.26.  No additional
> and unnecessary applications are running on that OS. Maybe only mail server
> is a little bit heavy. On Tomcat I'm running only one application which is
> actually search engine(I use Compass framework), indexed pages I'm keeping
> as a file system on Tomcat dir (they have reasonable sizes, so no need now
> to think up about server storage space) I have 2 mounted devices / & /usr.
> But there is one issue I have. It's ok when I deploy the project on
> app server (OS & all app installations were new at that point) . For about
> 1-2 weeks I got 800 GB disk usage (have seen it on webmin) of  1 terabyte
> instead of max~~~ 200MB usage. Of course I forgot to remove old log files of
> app server(logs are very large as the customer wanted to see everything is
> possible to show), after deleting of them I still got smth about 600-700GB
> disk space usage. I reboot my app server nothing was changed, then I reboot
> the computer, I still had for 400-500 GB used(of /usr) . Then I started to
> check all dirs sizes(du  --max-depth=1 -h), nothing suspicious I got.  Tomcat
> is in /usr/share/. Didn't find anything strange in its all dirs too. This
> can be only the result of search engine indexing, but nothing strange in
> tomcat's temp dir again. But when I stopped tomcat and reboot the server, I
> got the real usage size 46 GB.
>
> My question is following:
>
> Does tomcat use some kind of virtualization technology or sharing/mounting
> network filesystem? Or what kind of reason can be for such behavior and how
> to fix?
>
> Thanks!
> Astghik


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Re: Does tomcat use some kind of virtualization technology or sharing/mounting network filesystem?

[Pid <pi...@pidster.com>]

On 07/02/2011 10:19, Astghik Mkrtchyan wrote:
> Does tomcat use some kind of virtualization technology or sharing/mounting
> network filesystem? Or what kind of reason can be for such behavior and how
> to fix?

No it doesn't.


p