RFC: possible issue with kqueue

[Warner Losh]

On Tue, Apr 6, 2021 at 10:14 PM Rozhuk Ivan <rozhuk.im at gmail.com> wrote:

> On Sat, 3 Apr 2021 11:21:50 -0600
> Warner Losh <imp at bsdimp.com> wrote:
>
> > > > https://reviews.freebsd.org/D19690
> > > >
> > > > I do not finish this.
> > > > Plan was: implement this and catch unmount notify in my FAM, that
> > > > in glib20.
> > > >
> > >
> > > Hum, but I do see mount/unmount events in devd on CURRENT!
> > >
> >
> > I did this in conjunction with the forced unmount work of chs at .
>
>
> Where I can learn more about this?
>

The devd stuff is documented in devd.conf(5).

The umount stuff is documented in the commit message for hash
d79ff54b5caad61e657b9cc651aa256f3949b97a

commit d79ff54b5caad61e657b9cc651aa256f3949b97a
Author: Chuck Silvers <chs at FreeBSD.org>
Date:   Mon May 25 23:47:31 2020 +0000

    This commit enables a UFS filesystem to do a forcible unmount when
    the underlying media fails or becomes inaccessible. For example
    when a USB flash memory card hosting a UFS filesystem is unplugged.
...
https://cgit.freebsd.org/src/commit/?id=d79ff54b5caad61e657b9cc651aa256f3949b97a

has the whole commit message. I'm not aware of other documentation for it
though.

Warner