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(A) The limit are as follows

Attribute ext2 ext3 ReiserFS
Maximum partition size** 4TB 4TB 16TB
Maximum file size* 2GB-2TB 2GB-2TB 8TB
Recovery/reboot after a crash Slow Fast Very slow
ACL support Yes Yes No
Maximum filename length 255 bytes 255 bytes 4032 bytes
Block size 1KB-4KB 1KB-4KB 4KB only

(B) 64 bit systems like Alpha, IA64 and x86-64 and 32-bit system with LFS enabled in kernel, the limit are as follows

Attribute ext2 ext3 ReiserFS
Maximum partition size** 2TB-32TB 2TB-32TB 16TB
Maximum file size* 2GB-2TB 2GB-2TB 8TB
Recovery/reboot after a crash Slow Fast Very slow
ACL support Yes Yes No
Maximum filename length 255 bytes 255 bytes 4032 bytes
Block size 1KB-4KB 1KB-4KB 4KB only

*The maximum file size for ext2/ext3 is actually dependent on the choice of blocksize and hardware architecture.
**The naximum partition size for ext2/ext3 is actually dependent on the choice of blocksize and hardware architecture.


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