40TB file-system ? (64-bit FC 13)

[nkhoa]

A server of mine is running of a 128GB disk, 64 bit-system, kernel 2.6
I've been trying to add an external-controlled- raid5 array ( a total of 40TB in size).

1. used GNU parted to partition /dev/sdb (raid5 array )
I've gotten warning: the resulting parition is not properly aligned for best performance

Although that process turned out to be ok, making filesystem failed

2. mk2fs -t ext4 /dev/sdb1
output: size of device is too big to be expressed in 32 bits using a block size of 4096
any idea will be greaT!
I thought the system has been running 64 bits.

thanks

[Rubberman]

Did you try to create an LVM2 volume? It should handle that size array.

[nkhoa]

hi,
yes I was able to create a full of 40TB LVM volume.
I had meant mkfs -t ext3 on that LVM volume still failed
it's same error that mkfs returned.

anyidea?

thanks!

[Irithori]

You hit a limit of ext3 here.
A 16TByte volume is the maximum it can do.

ext4 can theoreticcall do more (1 Exabyte), but is restricted by the e2fsprogs user space programs, which still are limited to 16TByte.


My advice would be to use xfs.

[Rubberman]

You hit a limit of ext3 here.
A 16TByte volume is the maximum it can do.

ext4 can theoreticcall do more (1 Exabyte), but is restricted by the e2fsprogs user space programs, which still are limited to 16TByte.


My advice would be to use xfs.

You might be able to get 40TB to work with ext3 if you change the block size with the -b block-size option to mkfs.ext3.

[nkhoa]

Thanks all
I think xfs is much better. Its performance (on top of ARECA controller) is superb