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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