Answer Posted / shshikanth soppa
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In ext2 filesystem, the filesystem is not mounted until its
consistency is checked by e2fsck program. the amount of time
taken to run e2fsck program is determined by the size of
file system. The more files you have on the file system, the
longer the consistency check takes.
ext3 does not require a file system check even after a
unclean shutdown. the time to recover an ext3 file system
after an unclean shutdown does not depend on size, rather it
depends on size of "journal" used to maintain consistency.
the default journal takes about a second to recover.
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