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

From: Rob Landley
Date: Mon May 20 2013 - 15:39:26 EST

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:

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.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at