Date: Sun, 03 Jun 2012 08:59:11 -0600 From: Gary Aitken <freebsd@dreamchaser.org> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: umount device busy Message-ID: <4FCB7BBF.7090603@dreamchaser.org>
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Something I'm overlooking here and a lot of questions I can't seem to find the answers to... I mounted a usb drive mount -t ntfs /dev/da0s1 /mnt/goflex Then, as nearly as I can remember... I then poked around a bit using the xfce4 browser. I tried to mkdir from the mount point as a normal user: cd /mnt/goflex %mkdir breakaway mkdir: .: No such file or directory After checking write premissions, which I didn't have, I did an su -l and tried again, with the same results. I then tried to unmount the drive, believing it was mounted read-only: #umount /mnt/goflex umount: unmount of /mnt/goflex failed: Device busy As nearly as I can tell, I don't have anything pointing at that drive. Questions: 1. What does the "No such file or directory" mean from mkdir? It's a relative dir name, and I'm sitting at a valid dir. 2. How do I find out how the file-system was mounted? mount (noargs) does not show read/write status 3. I tried lsof but I don't get any output from it: lsof +d /mnt/goflex -x -- /mnt/goflex Where does it go if not to stdout? 4. lsof has a *long* man page, so I'd like to save it temporarily so I can search it in an editor. If I do man lsof >temp.tmp the output contains backspace sequences which screw up searching. How do I get man to produce plain text without the control sequences? 5. The lsof man page references a faq which is supposed to be part of the distribution. find . -ls | grep lsof doesn't show any faq. 6. And finally, any idea why umount says the device is busy? Seems like I should have been able to find the answer to at least one of those but I'm coming up short. Thanks for relevant pointers, Gary
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