On Tue, 5 Dec 2006, Joe Advisor wrote:
> Hi all,
>
> If I rapidly rewrite a file, for example:
>
> while true; do echo "foo" > /foo; done;
>
> Or for example:
>
> #!/usr/bin/perl
> for (1 .. 100000) {
> MyStuff::Util::writeFile('/root/foo', $blah);
> }
>
> The filesystem eventually says filesystem full.
>
> Obviously those are corner cases because I am rapidly rewriting. But even if
> I don't rapidly rewrite, if I just rewrite for example, once every few
> seconds, based on changes to the environment, etc., the filesystem still
> fills up. If I make the filesystems bigger, that helps, but I was wondering
> if there is another way.
>
> If I put a sync in cron, that helps a lot too. That seemed like a kludge,
> wasn't sure if that's the right thing to do.
>
> Is there a global setting, perhaps some sysctl, that I need to modify, to
> prevent this from happening?
>
> Thanks in advance.
With this loop:
while true; do echo "foo" > foo; sleep 1; done;
I see increasing usage, but it drops after a while. There's no
permanent increase.
It could be softdep processing (are you using softdep?) is not capable
of keeping up. You could try without softdeps.
-Otto
