Re: new mount is broken w/regard to devnames in /etc/fstab

[Rob Landley]

On 05/19/2013 12:01:18 AM, Linda Walsh wrote:
> 1) How is one supposed to get the real root device?
> It's not /dev/root -- and on my system /dev/root doesn't even exist.

There was a thread on this a couple months ago:
  https://lkml.org/lkml/2013/3/20/315

You can get the major/minor of a filesystem with the stat() system  
call, or even the stat command line utility. That gives you the  
major/minor of the device the filesystem was mounted from.

Note that there's only a major/minor when the filesystem _has_ a  
backing block device. If it's initramfs or tmpfs: there isn't one. If  
it's nfs, smbfs, or v9fs: there isn't one.

Rob--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/