linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: mru@kth.se (Måns Rullgård)
To: linux-kernel@vger.kernel.org
Subject: Re: 2.4.23 + tmpfs: where's my mem?!
Date: Thu, 11 Dec 2003 15:23:44 +0100	[thread overview]
Message-ID: <yw1x3cbrh1qn.fsf@kth.se> (raw)
In-Reply-To: Pine.LNX.4.44.0312111351520.1386-100000@localhost.localdomain

Hugh Dickins <hugh@veritas.com> writes:

> On Thu, 11 Dec 2003, Willy Tarreau wrote:
>
>> On Thu, Dec 11, 2003 at 10:54:28AM -0200, dual_bereta_r0x wrote:
>> > root@hquest:/tmp# cat /etc/slackware-version
>> > Slackware 9.1.0
>> > root@hquest:/tmp# uname -a
>> > Linux hquest 2.4.23 #6 Sat Nov 29 22:47:03 PST 2003 i686 unknown unknown 
>> > GNU/Linux
>> > root@hquest:/tmp# df /tmp
>> > Filesystem           1K-blocks      Used Available Use% Mounted on
>> > tmpfs                   124024    112388     11636  91% /tmp
>> > root@hquest:/tmp# du -s .
>> > 32      .
>> > root@hquest:/tmp# _
>> 
>> maybe you have a process which creates a temporary file in /tmp, and deletes
>> the entry while keeping the fd open. vmware 1.2 did that, and probably more
>> recent ones still do. It's a very clever way to automatically remove temp
>> files when the process terminates.
>
> That's right, and would explain why du may show 32 even if ls -alR
> shows nothing at all (what does ls -alR /tmp show?).
>
> But the strange thing is that df's Used does not match du: they should
> be identical, though arrived at from different directions.  I've not
> seen that, and have no idea what's going on: it's as if a subtree of
> /tmp has become detached (a non-empty directory removed).

FWIW, I've seen this behavior with vmware 4.  The space came back when
I closed vmware.

-- 
Måns Rullgård
mru@kth.se


  reply	other threads:[~2003-12-11 14:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-11 12:54 2.4.23 + tmpfs: where's my mem?! dual_bereta_r0x
2003-12-11 13:31 ` Willy Tarreau
2003-12-11 14:11   ` Hugh Dickins
2003-12-11 14:23     ` Måns Rullgård [this message]
2003-12-11 15:01       ` Mario 'BitKoenig' Holbe
2003-12-11 15:39         ` Hugh Dickins
2003-12-11 20:58       ` Maciej Zenczykowski
2003-12-11 15:31   ` William Stearns

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=yw1x3cbrh1qn.fsf@kth.se \
    --to=mru@kth.se \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).