[CentOS] umount problem

[Fred Smith]

On Tue, Oct 07, 2014 at 03:18:37PM -0700, John R Pierce wrote:
> On 10/7/2014 3:13 PM, Fred Smith wrote:
> >I've got a usb HD mounted, and it has been mounted since the weekend, and
> >has been kept busy during that period.
> >
> >now I"m done with it an want to umount it, but neither umount nor the
> >on-screen icon (when right-clicked) will let me do it:
> >
> >it is /dev/sdd1, mounted as /media/seagateusb. when root tries to
> >umount it we get this:
> >
> ># umount /media/seagateusb
> >umount: /media/seagateusb: device is busy.
> >         (In some cases useful info about processes that use
> >          the device is found by lsof(8) or fuser(1))
> >
> >lsof | grep sdd1 gives this:
> >
> >$ lsof | grep sdd1
> >
> >jbd2/sdd1 26358      root  cwd       DIR              253,1     4096          2 /
> >jbd2/sdd1 26358      root  rtd       DIR              253,1     4096          2 /
> >jbd2/sdd1 26358      root  txt   unknown                                        /proc/26358/exe
> >
> 
> whats process  26358?
> 
>     ps -fwp 26358
> 
> will show you this...

here's the result of your PS command, but I personally do not find it
to be the least bit enlightening. perhaps you will...:

# ps -fwp 26358
UID        PID  PPID  C STIME TTY          TIME CMD
root     26358     2  0 Oct04 ?        00:01:14 [jbd2/sdd1-8]

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
                       I can do all things through Christ 
                              who strengthens me.
------------------------------ Philippians 4:13 -------------------------------