[SOLVED] Not able to access device node in chroot

rajendrabani · 10-27-2015, 12:28 AM

I have mounted ramdisk using mount and chroot commands. But I don't see any device nodes, e.g. USB key in /dev/sda1 or NAND paritions in /dev/mtd2, etc.

My questions are:
- Does chroot runs init script when it is mounted? Or this has to be done manually?
- How to access devices from chroot?
- If regular file system is accessing this node, does this gets locked?
- If regular file system is RO, can I mount filesystem with RW?

lambo69 · 10-27-2015, 03:41 AM

Quote:

Does chroot runs init script when it is mounted?

No

Quote:

Or this has to be done manually?

Yes

Quote:

How to access devices from chroot?

Before you enter the chrooted directory, you have to mount /dev into it with --bind switch.

Code:

mount --bind /dev /chroot/dev

If you need further access, mounting /sys and /proc in the same way was not a bad idea.

rajendrabani · 10-27-2015, 09:20 AM

Hi Lambo69,

Your suggestion to bind worked for me. Thanks for your help!

regards
Rajendra

lambo69 · 10-27-2015, 09:26 AM

You're welcome