Ext3 problems

I am not able to mount vg (lvm) which was mounted previously
as ext3.
Now i get the results:

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Pass 1: Checking inodes, blocks, and sizes
Root inode is not a directory. Clear? yes

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and nothing more. This volume group is merely 2 Tb.
After I try to mount it, I get this result:mount: wrong fs type, bad option, bad superblock on /dev/test_gv/test_lv,
or too many mounted file systems
(aren't you trying to mount an extended partition,
instead of some logical partition inside?)

Quote:

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- the typical mistake.
does anybody know what how much time this program will take?
Thanks!

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Originally Posted by forker

does anybody know what how much time this program will take?

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What program? e2fsck? Just run it as "e2fsck -vC 0 /dev/test_gv/test_lv" to make it give you a completion bar.
However, was it really a wise move to make it clear your root inode? Wouldn't that make the filesystem unusable?