mounting without -o loop

Posted by jumpinjoe on Stack Overflow See other posts from Stack Overflow or by jumpinjoe
Published on 2010-03-17T12:17:36Z Indexed on 2010/03/17 12:21 UTC
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device

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mount

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ramdrive

Hi, I have written a dummy (ram disk) block device driver for linux kernel. When the driver is loaded, I can see it as /dev/mybd.

I can successfully transfer data onto it using dd command, compare the copied data successfully.

The problem is that when I create ext2/3 filesystem on it, I have to use -o loop option with the mount command. Otherwise mount fails with following result:

mount: wrong fs type, bad option, bad superblock on mybd, missing codepage or helper program, or other error

What could be the problem? Please help.

Thanks.

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