Date: Wed, 22 Jul 2020 15:16:33 -0500 From: Valeri Galtsev <galtsev@kicp.uchicago.edu> To: freebsd-questions@freebsd.org Subject: Re: Unmounting usb disk impossible Message-ID: <7e96086e-c765-469c-f200-f1ca94b0296a@kicp.uchicago.edu> In-Reply-To: <CAOgwaMt1kCe4RfBMM=EcWjpTMeFkjk028=bJJYF-Qsdty2k4nw@mail.gmail.com> References: <slrnrhglh3.l6v.listmail@smtp.simply.com> <CAOgwaMt1kCe4RfBMM=EcWjpTMeFkjk028=bJJYF-Qsdty2k4nw@mail.gmail.com>
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On 7/22/20 12:44 PM, Mehmet Erol Sanliturk wrote: > On Wed, Jul 22, 2020 at 6:12 PM Morten Bo Johansen via freebsd-questions < > freebsd-questions@freebsd.org> wrote: > >> Hi >> >> I simply cannot unmount my usb disk. It is mounted by automount/autofs >> on /media/da0s1. I try to unmount it like this >> >> sudo umount -At autofs >> >> but it replies with the error message >> >> umount: unmount of /media failed: Device busy >> >> I run lsof grepping for "/media" or "da0s1" both with and >> without sudo. Nothing shows. >> Did you try lsof -k /media/[whatever name it is mounted with] and then try to force unmount umount -f /media/[whatever name it is mounted with] ? Valeri >> I got no terminals accessing the mount point, no zombie >> processes or anything. >> >> If the error message is really correct and some process is >> actually accessing /media, how do I find it if lsof shows nothing? >> >> Any other advice? >> >> Thanks, >> Morten >> >> >> >> _______________________________________________ >> >> > > You did not write your mount statement . > > It seems that your umount statement is completely wrong . > > > > https://www.freebsd.org/cgi/man.cgi?query=umount&sektion=8 > umount > > > > You are saying that > > "Unmount ALL of the mounted files in "fstab" . > > Please check manual of "umount" to write specific file(s) to unmount . > > Mehmet Erol Sanliturk > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
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