linux-ext4 - Re: Is >16TB support considered stable?

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Message-ID: <4C001BEC.9080906@redhat.com>
Date:	Fri, 28 May 2010 15:39:24 -0400
From:	Ric Wheeler <rwheeler@...hat.com>
To:	Sandon Van Ness <sandon@...-ness.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: Is >16TB support considered stable?

On 05/28/2010 12:52 PM, Sandon Van Ness wrote:
> I have a 36 TB (33.5276 TiB) device. I was originally planning to run
> JFS like I am doing on my 18 TB (16.6697 TiB) partition but the
> userspace tools for file-system creation (mkfs) on JFS do not correctly
> create file-systems over 32 TiB. XFS is not an option for me (I have had
> bad experiences and its too corruptible) and btrfs is too beta for me.
> My only options thus are ext4 or JFS (limited to 32 TiB).
>
> I would rather not waste ~ 1TiB of space which will likely go to other
> partitions that would normally only be 500 GiB but will now be 1.5 TiB
> if I can and with some of my testing of ext4 I think it could be a
> viable solution. I heard that with the pu branch 64-bit addressing
> exists so you can successfully create/fsck>16 TiB file-systems. I did
> read on the mailing lists that there were some problems on 32-bit
> machine but i will only use this file-sytem on x86_64.
>
> So here is my question to you guys:
>
> Is the pu branch pretty stable? Is it stable enough to have a 33 TiB
> file-system in the real-world and be as stable and work as well as a<16
> TiB file-system or am I better off losing out some of my space and
> making a 32 TiB (minus a little) JFS partition and just stick to what I
> know works and works well?
>    

Not sure which version of XFS you had trouble with, but it is certainly 
the most stable file system for anything over 16TB....

Regards,

Ric

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