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Old 04-28-2008, 10:49 AM
Jordi Prats
 
Default ext3 limits?

Hi all,
I have a 4246GB ext3 filesystem exported by NFS on a 32 bits
architecture. Some applications are generating estrange errors, so maybe
I'm facing a ext3 limit?


Thanks!
Jordi

--
.................................................. ....................
__
/ / Jordi Prats
C E / S / C A Dept. de Sistemes
/_/ Centre de Supercomputació de Catalunya

Gran Capitą, 2-4 (Edifici Nexus) · 08034 Barcelona
T. 93 205 6464 · F. 93 205 6979 · jprats@cesca.es
.................................................. ....................


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Old 04-28-2008, 01:42 PM
"Christian Kujau"
 
Default ext3 limits?

On Mon, April 28, 2008 12:49, Jordi Prats wrote:
> I have a 4246GB ext3 filesystem exported by NFS on a 32 bits
> architecture. Some applications are generating estrange errors, so maybe
> I'm facing a ext3 limit?

http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html says:

Ext3 can support files up to 1TB. With a 2.4 kernel the filesystem size
is limited by the maximal block device size, which is 2TB. In 2.6 the
maximum (32-bit CPU) limit is of block devices is 16TB, but ext3
supports only up to 4TB.


HTH,
C.
--
make bzImage, not war

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Old 04-29-2008, 02:47 PM
Jordi Prats
 
Default ext3 limits?

Just 4TB? Anyone can give any recommendation witch file system to use
for large disks?


Thanks,
Jordi

Christian Kujau wrote:

On Mon, April 28, 2008 12:49, Jordi Prats wrote:


I have a 4246GB ext3 filesystem exported by NFS on a 32 bits
architecture. Some applications are generating estrange errors, so maybe
I'm facing a ext3 limit?



http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html says:

Ext3 can support files up to 1TB. With a 2.4 kernel the filesystem size
is limited by the maximal block device size, which is 2TB. In 2.6 the
maximum (32-bit CPU) limit is of block devices is 16TB, but ext3
supports only up to 4TB.


HTH,
C.




--
.................................................. ....................
__
/ / Jordi Prats
C E / S / C A Dept. de Sistemes
/_/ Centre de Supercomputació de Catalunya

Gran Capitą, 2-4 (Edifici Nexus) · 08034 Barcelona
T. 93 205 6464 · F. 93 205 6979 · jprats@cesca.es
.................................................. ....................


_______________________________________________
Ext3-users mailing list
Ext3-users@redhat.com
https://www.redhat.com/mailman/listinfo/ext3-users
 
Old 04-29-2008, 02:58 PM
Eric Sandeen
 
Default ext3 limits?

Christian Kujau wrote:
> On Mon, April 28, 2008 12:49, Jordi Prats wrote:
>> I have a 4246GB ext3 filesystem exported by NFS on a 32 bits
>> architecture. Some applications are generating estrange errors, so maybe
>> I'm facing a ext3 limit?
>
> http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html says:
>
> Ext3 can support files up to 1TB. With a 2.4 kernel the filesystem size
> is limited by the maximal block device size, which is 2TB. In 2.6 the
> maximum (32-bit CPU) limit is of block devices is 16TB, but ext3
> supports only up to 4TB.

Actually as of 2.6.18 (or is it .19...), ext3 kernel code should support
the full 16T, at least in terms of being able to address that many
blocks w/o corruption. I did a fair amount of work in that time frame
to root out all the sign overflows etc to allow ext3 to get to 16T.

-Eric

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Old 04-29-2008, 03:03 PM
Eric Sandeen
 
Default ext3 limits?

Eric Sandeen wrote:
> Christian Kujau wrote:
>> On Mon, April 28, 2008 12:49, Jordi Prats wrote:
>>> I have a 4246GB ext3 filesystem exported by NFS on a 32 bits
>>> architecture. Some applications are generating estrange errors, so maybe
>>> I'm facing a ext3 limit?
>> http://batleth.sapienti-sat.org/projects/FAQs/ext3-faq.html says:
>>
>> Ext3 can support files up to 1TB. With a 2.4 kernel the filesystem size
>> is limited by the maximal block device size, which is 2TB. In 2.6 the
>> maximum (32-bit CPU) limit is of block devices is 16TB, but ext3
>> supports only up to 4TB.
>
> Actually as of 2.6.18 (or is it .19...), ext3 kernel code should support
> the full 16T, at least in terms of being able to address that many
> blocks w/o corruption. I did a fair amount of work in that time frame
> to root out all the sign overflows etc to allow ext3 to get to 16T.

Oh, and prior to that, really 8T should be fine.

-Eric

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Old 04-29-2008, 03:10 PM
"Christian Kujau"
 
Default ext3 limits?

On Tue, April 29, 2008 16:58, Eric Sandeen wrote:
> Actually as of 2.6.18 (or is it .19...), ext3 kernel code should support
> the full 16T, at least in terms of being able to address that many blocks
> w/o corruption. I did a fair amount of work in that time frame to root
> out all the sign overflows etc to allow ext3 to get to 16T.

That's great, thanks!

Then someone should either update the FAQ or better yet put the FAQ on
e2fsprogs.sf.net (or wherever the Ext2 homepage resides).

Thanks,
C.
--
BOFH excuse #442:

Trojan horse ran out of hay

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Old 04-30-2008, 08:52 AM
Jordi Prats
 
Default ext3 limits?

Eric Sandeen wrote:

Actually as of 2.6.18 (or is it .19...), ext3 kernel code should support
the full 16T, at least in terms of being able to address that many
blocks w/o corruption. I did a fair amount of work in that time frame
to root out all the sign overflows etc to allow ext3 to get to 16T.


Thanks Eric! I'm going to update my kernel right now!

Jordi

--
.................................................. ....................
__
/ / Jordi Prats
C E / S / C A Dept. de Sistemes
/_/ Centre de Supercomputació de Catalunya

Gran Capitą, 2-4 (Edifici Nexus) · 08034 Barcelona
T. 93 205 6464 · F. 93 205 6979 · jprats@cesca.es
.................................................. ....................


_______________________________________________
Ext3-users mailing list
Ext3-users@redhat.com
https://www.redhat.com/mailman/listinfo/ext3-users
 
Old 05-01-2008, 12:27 PM
Juri Haberland
 
Default ext3 limits?

Christian Kujau wrote:
> On Tue, April 29, 2008 16:58, Eric Sandeen wrote:
>> Actually as of 2.6.18 (or is it .19...), ext3 kernel code should support
>> the full 16T, at least in terms of being able to address that many blocks
>> w/o corruption. I did a fair amount of work in that time frame to root
>> out all the sign overflows etc to allow ext3 to get to 16T.

> Then someone should either update the FAQ or better yet put the FAQ on
> e2fsprogs.sf.net (or wherever the Ext2 homepage resides).

I'll update the FAQ as soon as possible.

Juri

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Old 05-01-2008, 09:57 PM
Christian Kujau
 
Default ext3 limits?

On Thu, 1 May 2008, Juri Haberland wrote:

I'll update the FAQ as soon as possible.


Thanks for maintaining the FAQ! Oh, and it's even referenced by the Ext3
Wikipedia article, so it really *is* important ;-)


Christian.
--
BOFH excuse #199:

the curls in your keyboard cord are losing electricity.

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Old 05-02-2008, 02:51 PM
Theodore Tso
 
Default ext3 limits?

On Thu, May 01, 2008 at 11:57:55PM +0200, Christian Kujau wrote:
> On Thu, 1 May 2008, Juri Haberland wrote:
>> I'll update the FAQ as soon as possible.
>
> Thanks for maintaining the FAQ! Oh, and it's even referenced by the Ext3
> Wikipedia article, so it really *is* important ;-)

Juri, would you have any objections to moving the FAQ to
ext4.wiki.kernel.org? It might be easier to update the FAQ there.
I'll note that since it was last updated in 2004, there are a number
of questions that are mostly out of date, such as all references to
Linux 2.2, and things like ``How do I convert the journal file from
version 1 to version 2?'.

With your permission, we can mirror the questions onto
ext4.wiki.kernel.org, amd then if you would be willing to put a
redirect to new location, that would be great.

Note that the ext4.wiki.kernel.org is designed to cover ext2/3 topics
in addition to ext4 issues.

- Ted

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