Can't kill a umount

[Robert Moskowitz]

On 09/06/2015 10:07 AM, Ed Greshko wrote:
> On 09/06/15 21:55, Robert Moskowitz wrote:
>> I was copying some files to a newly set up USB HD, and then did some umounts when done.  Well they are still running, and
>>
>> kill pid
>>
>> is not killing them and they are taking up most of my cpu.
>>
>> I have never seen 'kill' fail.
>>
>> What can I do other than reboot?
> Well, a kill will fail to kill if the process is a zombie or in an  uninterruptable state.  If top doesn't show any zombies then the process is probably uninterruptable and I think this shows up as a D state in top.
>
Tasks: 217 total,   5 running, 212 sleeping,   0 stopped,   0 zombie
%Cpu(s): 12.4 us, 84.1 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  3.5 si,  
0.0 st
KiB Mem :  3636504 total,    34804 free,  2810220 used, 791480 buff/cache
KiB Swap:  8388604 total,  6408640 free,  1979964 used. 710384 avail Mem

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ 
COMMAND
  2197 root      20   0  125148   1840   1616 R  79.9  0.1 19:24.07 umount
  2200 root      20   0  125148   1904   1680 R  78.2  0.1 19:44.46 umount
  8705 rgm       20   0 2743540 579296  41008 S  13.5 15.9 4245:23 firefox

And the terminal window this is from, is in as su.