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Old 06-04-2004, 01:33 AM   #1
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linux file system

i've seen that linux file system is ext1, ext2, and ext3
what are the difference between them?
any incompatibility issues of those file systems?

Old 06-04-2004, 01:43 AM   #2
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ext2 built upon ext1. ext3 is basically ext2 with a journal. ext1 is old. ext2 and ext3 are still widely used. ext3 is more reliable because of the additions of its journal.

I have never used ext1 but you can read and write files between ext2 and ext3 without any problems.
Old 06-04-2004, 01:44 AM   #3
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ext is obsolete. ext3 is similar to ext2 with the addition of journaling which makes it more rebust. When the number of reboots reaches a certain number, the system will run a check on it. This check will be much faster on an ext3 file system. The ext2 file-system is used for the ram-disk file, initrd, and often for driver floppy disks used during an install.
Old 06-04-2004, 02:06 AM   #4
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what is journaling?
and how and why can it be so important in the ext3 file system?
Old 06-04-2004, 03:46 AM   #5
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I think you'll like this guide to linux file system:


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