Re: Bug? Kernel doesn't prevent multiple rw nilfs mounts

[Michael Conrad <mconrad-HsDW+lVSy7tZ66HEZ9PjWw@public.gmane.org>]

On 10/24/2013 3:57 PM, Vyacheslav Dubeyko wrote:
> What do you mean when you are talking about two systems?
> Do you have two systems are working in parallel with one NILFS2 partition?
> What is your configuration?

Separate systems.  Each has 2 SATA disks (a main drive, and a second for 
backups).  These are test/development servers I use, and running regular 
consumer hardware.  I added a second drive to each just to experiment 
with NILFS.  (BTW, I had problems when running NILFS on a loopback 
device on System 1.  I can investigate that further later.)

I tried NILFS on System 1 a few days ago, and ran into the problem. I 
decided to try a newer kernel, but tried from scratch on System 2 
instead of upgrading System 1.  The only thing they have in common is 
that they are gentoo-based and 32-bit.  They have very different 
hardware and very different kernel configs.

The double-mount should be prevented at the kernel level, right?  I 
could try a linux version direct from kernel.org, next.

If the double-mount should be prevented in user-space, then I could 
check things like the libc, compiler, strace, etc.

Which would you like next?

-Mike
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