Re: sysfs: tagged directories not merged completely yet

[Serge E. Hallyn]

Quoting Eric W. Biederman (ebiederm@xxxxxxxxxxxx):
> "Serge E. Hallyn" <serue@xxxxxxxxxx> writes:
> 
> > Again fuse doesn't address the *core* issue (sysfs needing a way to
> > create files for multiple devicenames with same name).  But I believe
> > Benjamin was looking into a minimal patch to fix that.  Benjamin,
> > have you gotten anywhere with that?
> 
> I would love to hear a minimal strategy for that.

Oh I just meant for kernel-space.  So if a container is creating lo,
it will create a device named lo, but the sysfs file will be called
lo_1 or something.

> The only minimal strategy user space wise is to create multiple superblocks.
> Anything else I an think of violates backwards compatibility.

Yes, the above would require that the container either not mount
sysfs, ignore sysfs, or tweak sysfs using
	mount -t tmpfs none /sys/class/net
	mount --bind /sys/devices/virtual/net/lo_1 /sys/class/net/lo
or using fuse.

I'd definately prefer the sysfs tagging approach.  But I'd prefer
the above over never being able to use network namespaces on a
standard distro (with sysfs enabled).

-serge
--
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/