Re: kld regression
- From: Andriy Gapon <avg@xxxxxxxxxxx>
- Date: Thu, 31 Jan 2008 14:39:52 +0200
on 31/01/2008 13:07 John Baldwin said the following:
On Wednesday 30 January 2008 12:39:14 pm Andriy Gapon wrote:
The problem is as follows:
1. put udf_load="YES" in loader.conf
2. you can mount and unmount udf filesystems
3. you can kldunload udf if no udf filesystems are mounted
4. now mount udf fs while udf.ko is unloaded
5. udf is auto loaded and fs is mounted
6. unmount fs
7. try to kldunload udf
kldunload: can't unload file: Device busy
kernel message: kldunload: attempt to unload file that was loaded by the
kernel
Yeah, it was loaded by kernel indeed, but WTF - what is the difference
from manual/loader.conf loading and why I can not manage my modules as I
wish?
Hmm, the relevant code (vfs_init.c) hasn't changed in 6.x since 6.0. There
were some changes in 7.0, but this should work in both branches. What is the
previous release that this worked on?
Maybe I was wrong when I called this regression, but this was very
surprising behavior for me. And in 5.X I did a lot of udf
debugging/experimenting and never encountered such a problem. Maybe I
always did kldload before mount, I can't tell now.
Anyway, this seems like an annoyance at the very least, pinning a kernel
module without any important reasons.
--
Andriy Gapon
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