Hi,

I'm running a benchmark program on Lenny that writes into a file and
repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.

$ ulimit -f
unlimited

$ uname -a
Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux

This doesn't seem to be a problem for other programs. I have a
VirtualBox snapshot as large as 2,587,808 bytes.

Any hints as to what's going on? Please CC me, I'm not on the list.

Thanks,
André


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André Wendt:
>
> I'm running a benchmark program on Lenny that writes into a file and
> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>
> $ ulimit -f
> unlimited
>
> $ uname -a
> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>
> This doesn't seem to be a problem for other programs. I have a
> VirtualBox snapshot as large as 2,587,808 bytes.

Are both files on the same filesystem? Which one are you using in either
case?

J.
--
In the west we kill people like chickens.
[Agree] [Disagree]
<http://www.slowlydownward.com/NODATA/data_enter2.html>

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André Wendt wrote:
> Hi,
>
> I'm running a benchmark program on Lenny that writes into a file and
> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>
> $ ulimit -f
> unlimited
>
> $ uname -a
> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>
> This doesn't seem to be a problem for other programs. I have a
> VirtualBox snapshot as large as 2,587,808 bytes.
>
> Any hints as to what's going on? Please CC me, I'm not on the list.
>
> Thanks,
> André
>
>

What testing suite are you using for this? Have you tried to use dd to
create a file larger than this? I'm going to guess what you are seeing
here is file size limit of the application you are using rather than ext3.

Jeff


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On 11/16/07 09:04, André Wendt wrote:
> Hi,
>
> I'm running a benchmark program on Lenny that writes into a file and
> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>
> $ ulimit -f
> unlimited
>
> $ uname -a
> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>
> This doesn't seem to be a problem for other programs. I have a
> VirtualBox snapshot as large as 2,587,808 bytes.
>
> Any hints as to what's going on? Please CC me, I'm not on the list.

2 megabytes? Computers have been able to create 2MB files for 40 years.

So, why are you blaming ext3 when there is *obviously* some other
explanation?

Like running out of room on the device.

- --
Ron Johnson, Jr.
Jefferson LA USA

%SYSTEM-F-FISH, my hovercraft is full of eels
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Jochen Schulz wrote:
> André Wendt:
>> I'm running a benchmark program on Lenny that writes into a file and
>> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>>
>> $ ulimit -f
>> unlimited
>>
>> $ uname -a
>> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>>
>> This doesn't seem to be a problem for other programs. I have a
>> VirtualBox snapshot as large as 2,587,808 bytes.
>
> Are both files on the same filesystem? Which one are you using in either
> case?

Yes, they are.

Oh, and thanks to Ron Johnson, I just realized all the sizes I mentioned
above are in *kilobytes*. DUH! ;-)

>
> J.


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Ron Johnson wrote:
> On 11/16/07 09:04, André Wendt wrote:
>> Hi,
>
>> I'm running a benchmark program on Lenny that writes into a file and
>> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>
>> $ ulimit -f
>> unlimited
>
>> $ uname -a
>> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>
>> This doesn't seem to be a problem for other programs. I have a
>> VirtualBox snapshot as large as 2,587,808 bytes.
>
>> Any hints as to what's going on? Please CC me, I'm not on the list.
>
> 2 megabytes? Computers have been able to create 2MB files for 40 years.

Ah, thanks for mentioning that. Of course it's 2 *GB*, the sizes are in
*kilobytes*. I didn't realize 'til I read 'man du'.

> So, why are you blaming ext3 when there is *obviously* some other
> explanation?
>
> Like running out of room on the device.

I don't think so:

$ df -h | grep home
/dev/hda7 27G 21G 5,0G 81% /home

The message in the subject is what I get before the program exists. It
would be different if there's no space.

André


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On Nov 16, 2007, at 8:12 AM, Jeff D wrote:

> André Wendt wrote:
>> Hi,
>> I'm running a benchmark program on Lenny that writes into a file and
>> repeatedly exits once the filesize reaches 2,099,204 bytes. This
>> is on ext3.
>> $ ulimit -f
>> unlimited
>> $ uname -a
>> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686
>> GNU/Linux
>> This doesn't seem to be a problem for other programs. I have a
>> VirtualBox snapshot as large as 2,587,808 bytes.
>> Any hints as to what's going on? Please CC me, I'm not on the list.
>> Thanks,
>> André
>
> What testing suite are you using for this? Have you tried to use
> dd to create a file larger than this? I'm going to guess what you
> are seeing here is file size limit of the application you are using
> rather than ext3.

I think so too. I bet this is an old bit of code, or maybe an old
binary statically compiled against old libraries.
Both the filesystem *and* the program have to support large files
for it to work.

ext2 and ext3 haven't had a 2 gigabyte limit in a long, long time.

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On 11/16/07 10:36, André Wendt wrote:
> Ron Johnson wrote:
>> On 11/16/07 09:04, André Wendt wrote:
>>> Hi,
>>> I'm running a benchmark program on Lenny that writes into a file and
>>> repeatedly exits once the filesize reaches 2,099,204 bytes. This is on ext3.
>>> $ ulimit -f
>>> unlimited
>>> $ uname -a
>>> Linux think 2.6.22-2-686 #1 SMP Fri Aug 31 00:24:01 UTC 2007 i686 GNU/Linux
>>> This doesn't seem to be a problem for other programs. I have a
>>> VirtualBox snapshot as large as 2,587,808 bytes.
>>> Any hints as to what's going on? Please CC me, I'm not on the list.
>> 2 megabytes? Computers have been able to create 2MB files for 40 years.
>
> Ah, thanks for mentioning that. Of course it's 2 *GB*, the sizes are in
> *kilobytes*. I didn't realize 'til I read 'man du'.
>
>> So, why are you blaming ext3 when there is *obviously* some other
>> explanation?
>>
>> Like running out of room on the device.
>
> I don't think so:
>
> $ df -h | grep home
> /dev/hda7 27G 21G 5,0G 81% /home
>
> The message in the subject is what I get before the program exists. It
> would be different if there's no space.

What benchmark? Can we run it?

- --
Ron Johnson, Jr.
Jefferson LA USA

%SYSTEM-F-FISH, my hovercraft is full of eels
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