* Bernhard Voelker <mail@bernhard-voelker.de> [01-03-16 17:37]:

On 01/03/2016 10:48 PM, Patrick Shanahan wrote:

...

openSUSE 13.1 server

cat /etc/mtab displays duplicate mounts:

/dev/sdc1 /mnt/ExTernal ext4 rw,relatime,data=ordered 0 0 /dev/sdh1 /mnt/ExTernal ext4 ro,relatime,data=ordered 0 0 /dev/sdi1 /mnt/ExTernal ext4 ro,relatime,data=ordered 0 0 /dev/sdj1 /mnt/ExTernal ext4 rw,relatime,data=ordered 0 0 /dev/sdk1 /mnt/ExTernal ext4 ro,relatime,data=ordered 0 0 /dev/sdl1 /mnt/ExTernal ext4 rw,relatime,data=ordered 0 0

Only the last is in /etc/fstab:

/dev/disk/by-id/usb-External_AL25744_12345678_0714100001-0:0-part1 /mnt/ExTernal ext4 nofail 1 2

blkid shows only /dev/sdl1

drive is an external powered usb box containing two drives:

fdisk -l /dev/sdl1 Disk /dev/sdl1: 2000.4 GB, 2000408723456 bytes, 3907048288 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes

How do I remove the duplicate entries w/o rebooting my server?

It seems they are "over-mounted" several times, so you could just do:

$ while umount /mnt/ExTernal ; do : ; done

Of course, no process should use files beneath the mount point to make umount work.

BTW: mtab is a symlink nowadays, and there are nice tools out there to get a good overview over such a situation:

$ findmnt --target /mnt/ExTernal

(or without --target ...).

Stopped smb nfsserver and umounted /dev/sdl1 Tks, attempts umount even with "-f" indicate target is busy but lsof and fuser show nothing. while umount /mnt/ExTernal ;do : ; done umount: /mnt/ExTernal: target is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1)) findmnt --target /mnt/ExTernal TARGET SOURCE FSTYPE OPTIONS /mnt/ExTernal /dev/sdc1 ext4 rw,relatime,data=ordered /mnt/ExTernal /dev/sdh1 ext4 ro,relatime,data=ordered /mnt/ExTernal /dev/sdi1 ext4 ro,relatime,data=ordered /mnt/ExTernal /dev/sdj1 ext4 rw,relatime,data=ordered -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://linuxcounter.net -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org

* Andrei Borzenkov <arvidjaar@gmail.com> [01-04-16 01:00]:

04.01.2016 01:49, Patrick Shanahan пишет: [...]

...

Stopped smb nfsserver and umounted /dev/sdl1

Tks, attempts umount even with "-f" indicate target is busy but lsof and fuser show nothing.

Are these directories exported by NFS? In this case they cannot be unmounted.

Yes, /mnt/ExTernal is exported via nfs, but not via device name. /mnt/ExTernal *is* mounted "now" as device /dev/sdl1 And I failed to mention I also stopped smb as there are windoz machines accessing the drive.

I am not sure if stopping nfsserver actually "unexports" them or just make them inaccessible.

...

while umount /mnt/ExTernal ;do : ; done umount: /mnt/ExTernal: target is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))

findmnt --target /mnt/ExTernal TARGET SOURCE FSTYPE OPTIONS /mnt/ExTernal /dev/sdc1 ext4 rw,relatime,data=ordered /mnt/ExTernal /dev/sdh1 ext4 ro,relatime,data=ordered /mnt/ExTernal /dev/sdi1 ext4 ro,relatime,data=ordered /mnt/ExTernal /dev/sdj1 ext4 rw,relatime,data=ordered

tks, -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://linuxcounter.net -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org