Re: Forcefully unmounting devfs...

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 12/21/04

  • Next message: Kirk McKusick: "Re: Forcefully unmounting devfs..." 
    To: Robert Watson <rwatson@freebsd.org>
Date: Tue, 21 Dec 2004 19:35:00 +0100

    In message <Pine.NEB.3.96L.1041221182235.48875Y-100000@fledge.watson.org>, Robe
    rt Watson writes:
    >
    >On Sat, 18 Dec 2004, Poul-Henning Kamp wrote:
    >
    >> Brainteaser for the x-mas days:
    >>
    >> What is the correct handling of busy device vnodes belonging
    >> to a devfs mountpoint which is being forcefully unmounted ?
    >>
    >> If you think this has a simple answer, please don't bother replying.
    >
    >Being something of a traditionalist, I'd ask the question: what happens in
    >4.x when you forceably unmount a UFS file system out from under the device
    >nodes? I'm guessing we deadfs the UFS vnodes, which results in varying
    >degrees of havoc depending on the device type?

    It's worse: we specfs the vnodes which results in varying degress of success,
    depending on device type. 

    -- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
_______________________________________________
freebsd-arch@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-arch
To unsubscribe, send any mail to "freebsd-arch-unsubscribe@freebsd.org"
  • Next message: Kirk McKusick: "Re: Forcefully unmounting devfs..."