[Unionfs] unionfs & realtime on 2.6.21

[Erez Zadok]

In message <4676DDD5.6090409 at infonegocio.com>, =?UTF-8?B?Um9tYW4gTXXDsW96?= writes:
> Hi,
> 
> I have been working on a live CD with unionfs (1.4), squashfs and an 
> 2.6.18-rt kernel.
> 
> It's working fine since I edited unionfs.h as reported sometime.
> 
> But now I'm getting stuck with 2.6.21-rt. I'm getting lots (really lots) 
> of messages like this:
> 
> unhashed dentry being revalidated:debug
> unhashed dentry being revalidated:kern.log
> unhashed dentry being revalidated:syslog
> 
> System becomes unusable and finally hangs :(
> 
> I guess they are unionfs related, but maybe I'm getting it wrong.
> 
> Probably you don't care about -rt, but could you give some pointer to 
> get  unionfs working on 2.6.21?
> 
> Thanks,
> Roman

Roman, this message was held up in our mail server with a bunch of spam.
Sorry for the belated reply.

Anyway, yes, we have back-ported Unionfs 2.0 to 2.6.21 and even all the way
back to 2.6.18.  Please give those a try and let us know how they work for
you.  In unionfs2, we have long fixed bugs which resulted in these
"unhashed" messages.  If, however, you're able to reproduce these messages
again (esp. if you get a lot of them), then please file a bug report and
we'll look into it.

Thanks,
Erez.