linux-kernel - Counters in df, du

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Message-ID: <20090713081106.GA5569@beaver.vrungel.ru>
Date:	Mon, 13 Jul 2009 12:11:06 +0400
From:	Alexey Vlasov <renton@...ton.name>
To:	linux-kernel@...r.kernel.org
Subject: Counters in df, du

Hi.

Periodically there is an overflow on /tmp on my boxes, and I can't find
the reaason why. May be it isn't a bug in tmpfs and you can help me find
the reason, and if it is an error, I hope you will help me to eliminate
it.

I know that df, du can show different values if some files were deleted,
but the processes which opened these files are still acting.

Well now I see this picture on one of my boxes. Below I post the results
of how I was trying to find what was /tmp full of.

# df -h /tmp
Filesystem            Size  Used Avail Use% Mounted on
tmpfs                 4.1G  3.3G  762M  82% /tmp

# du -hs /tmp
518M    /tmp

# lsof /tmp | awk '{if ($7 != 0) print$0}'
(in attach)

I still don't see any files taking 3G. Now I know only one solution
mount/remount /tmp.

-- 
BRGDS. Alexey Vlasov.

View attachment "tmp.lsof" of type "text/plain" (1177 bytes)