linux-ext4 - Re: "make check" broken on maint branch?

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Date:	Fri, 1 Nov 2013 21:12:37 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	Theodore Ts'o <tytso@....edu>
Cc:	"Dilger, Andreas" <andreas.dilger@...el.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: "make check" broken on maint branch?

On Thu, Oct 31, 2013 at 11:21:15PM -0400, Theodore Ts'o wrote:
> On Fri, Nov 01, 2013 at 10:35:56AM +0800, Zheng Liu wrote:
> > Hi Andreas,
> > 
> > On Thu, Oct 31, 2013 at 09:35:25PM +0000, Dilger, Andreas wrote:
> > > I tried to add in a "truncate -s $SIZE_2 $TMPFILE", but it complains that
> > > it
> > > isn't able to truncate the file in /tmp to 2TB:
> > > 
> > >   truncating `/tmp/e2fsprogs-tmp.OGxb09' at 2199023255552 bytes: File too
> > > large
> > > 
> > > Testing manually, it seems I'm not allowed to create a file in tmpfs larger
> > > than 256GB.  How large does this file need to be for this test to be valid?
> > > 
> > > Anyone else seen these problems, or do I need to dig in further?
> > 
> > Yes, I also can see these problems.
> 
> Hmm.... it works for me.  Run while r_64bit_big_expand is running:
> 
> % ls -l tmp
> ...
> 24896 -rw-r--r--. 1 tytso      tytso      2199023255552 Oct 31 23:17 e2fsprogs-tmp.pkOcCc
> ...

$ ls -l /tmp
-rw-rw-r-- 1 wenqing wenqing 536870912 Nov  1 21:03 e2fsprogs-tmp.x8yzKP

I am not sure that I do the right thing to get this result because the
tmporary files are removed after the test is done.  So what I only can
do is like this in a terminal during the test is running:
  while true
  do
          ls -l /tmp
          usleep 500
  done

Please let me know if I am wrong.

> 
> % df /tmp
> Filesystem     1K-blocks  Used Available Use% Mounted on
> tmpfs            3216420 26008   3190412   1% /tmp
> 
> What version of the kernel are you running?  I am using 3.12-rc5 plus
> the ext4 dev tree, so I'm using a pretty recent kernel.

I'm using 3.12-rc5 plus the ext4 dev tree too.  So I guess that the
difference between us is that I do these tests on a hard disk rather
than on tmpfs.

                                                - Zheng
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