umount problems
T. Nifty Hat Mitchell
mitch48 at sbcglobal.net
Fri Jul 2 04:42:02 UTC 2004
On Mon, Jun 28, 2004 at 12:26:21PM -0700, Mike Fedyk wrote:
> Date: Mon, 28 Jun 2004 12:26:21 -0700
> From: Mike Fedyk <mfedyk at matchmail.com>
> To: korgull at home.nl,
> For users of Fedora Core releases <fedora-list at redhat.com>
> Cc: "Christopher K. Johnson" <ckjohnson at gwi.net>
> Subject: Re: umount problems
> Reply-To: For users of Fedora Core releases <fedora-list at redhat.com>
>
> Marcel Janssen wrote:
> >On Sunday 27 June 2004 11:51, Christopher K. Johnson wrote:
> >
> >>Marcel Janssen wrote:
> >>>Anyway I can force an unmount ?
> >>
> >>The problem is probably fam.
> >>Try:
> >>killall -HUP fam
> >>Then unmount.
> >
> >
> >It wasn't fam.
> >The problem simply disappeared, after 10 minutes I could unmount. Strange,
> >never seen this before. Must be something regarding the hotplug stuff I
> >guess.
>
> It was fam.
>
> I saw this before and traced it with lsof and grep and it was always fam
> holding the mount open.
>
> There seems to be a timing issue, or maybe just a simple timeout going
> on here. If you try to unmount soon after using a mount, or maybe soon
> after initially inserting a disk (I was using CDs) it will refuse to
> unmount with the error you mentioned.
>
> The more I messed with it, the more persistent it was in refusing to
> unmount, so that's why I think it's a timeout problem. Time seems to
> fix it most of the time.
>
> Can someone point me to the established practices for reporting bugs?
> What tools should I use to give a standard bug report?
This is a moderatly known issue.
The book solution to date is to use "umount -l"
-l Lazy unmount
If you do not mind clicking on the refresh icon or mind if
the system polls the devices then just shut off fam.
If you expect a GUI display of anything to update quickly you
need famd or some equivalent.
I commonly turn famd off, but then again I am most happy at a shell prompt.
--
T o m M i t c h e l l
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