EXT 4 Filesystem.
Am improved design on file system with the existing ext2 and ext3 FS, whats so new is the journaling strucure and the bit addressing.
The most important things to list down are as here
a)Bigger Filesystem and Bigger File size.
wat the hell is that... ok this is how it is ext3 supports maximum of 16TB maximum filesystem size and 2TB per file.
Ext4 supports 1EB ( 1 EB= 1GB of PB) of file system size and 16 TB per file size............ wow thats gr8... So how do I change my Filesystem now... dont worry , u need to update your kernel to the latest ie--- Kernel Version 2.6.28.
Block addressing is 48 bit and not 64 bit.. Im sure people are working for 64 bit addressing in the future release.
b) Sub Directory Scalability is extended to unlimited, where as ext3 had a limit of 32000 sub directories.. Enjoy folks...
c) Improved fsck upto 20 times faster than the predeccors...
d) Migration..
You can migrate with tune2fs and fsck commands to ext4 fs from ext2/3 fs..........
Jus few ones to list here.. We shall see more.................
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