1.5TB ext3 partitions - mke2fs problems at 2^31 blocks
Damian Menscher
menscher at uiuc.edu
Mon Oct 31 22:10:48 UTC 2005
On Mon, 31 Oct 2005, Alex Bligh wrote:
> mke2fs -j /dev/sdb
>
> My suspicious mind says this is 1/3 of the way through the disk, which is
> 2^31 blocks, i.e. where the block number goes negative in a signed
> environment.
>
> Is there a problem with ext3 supporting more than 2^31 blocks?
>
> System:
> AMD64 2 x Opteron 275
> Ubuntu Breezy
> mke2fs 1.38
> Kernel 2.6.12 + 3w9xxx from 2.6.14 or from 3-ware
> 3-ware 9550SX RAID controller, latest firmware, BIOS
> RAID-5 1.5 TB single partition disk
FWIW, we've been running a 3.5T partition for about a year, on
x86_64-smp FC4. We had to compile the latest parted to create the GPT
partition table, but other than that it wasn't a big problem.
I can say that we had serious problems getting a >2TB partition working
with a 32-bit machine, or a 2.4 kernel. Those are the problems that
Andreas just referenced in his message in the other thread. :)
I don't remember for sure whether we're actually USING more than 2TB of
the 3.5 right now (and the machine is down today so I can't check).
Damian Menscher
--
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