Re: [gentoo-user] cryptsetup close and device in use when it is not

[Dale <rdalek1967@gmail.com>]

Dale wrote:
> Dale wrote:
>> Jack wrote:
>>> Is it possible it was still syncing cache out to the physical drive? 
>>> I wonder if iotop would show any activity for that drive if that's the
>>> case?
>>>
>>> Jack
>>>
>>>
>>>
>> I may try that next time but the light had stopped blinking for several
>> minutes.  Since it is a SMR drive, I always leave it running until I
>> can't feel the heads bumping around.  I don't think it would be that
>> but, it's worth a try. It may lead to something. 
>>
>> Will update when it does it again. 
>>
>> Thanks.
>>
>> Dale
>>
>> :-)  :-) 
>>
>
> I had to wait until I was doing backups again to try anything.  The 6TB
> drive did fine.  The 8TB drive is giving the in use error.  The drive is
> unmounted but iotop didn't show anything and the light isn't blinking
> either.  I'd think if it was flushing cache the light would flash and it
> would not umount. 
>
> I tried the udev-trigger trick but it didn't work.  I don't know how
> long it will stay 'in use' so if anyone has ideas, think and type fast. 
> If not, may have to wait until next time to try again.
>
> Dale
>
> :-)  :-) 
>


Some more info:


root@fireball / # lvs
  LV     VG     Attr       LSize   Pool Origin Data%  Meta%  Move Log
Cpy%Sync Convert
  Home2  Home2  -wi-ao----
<12.74t                                                   
  swap   OS     -wi-ao---- 
12.00g                                                   
  usr    OS     -wi-ao---- 
35.00g                                                   
  var    OS     -wi-ao---- 
52.00g                                                   
  backup backup -wi-ao----
698.63g                                                   
root@fireball / # vgs
  VG     #PV #LV #SN Attr   VSize    VFree 
  Home2    2   1   0 wz--n-  <12.74t      0
  OS       1   3   0 wz--n- <124.46g <25.46g
  backup   1   1   0 wz--n-  698.63g      0
root@fireball / # pvs
  PV         VG     Fmt  Attr PSize    PFree 
  /dev/sda7  OS     lvm2 a--  <124.46g <25.46g
  /dev/sdb1  Home2  lvm2 a--    <5.46t      0
  /dev/sdc1  Home2  lvm2 a--    <7.28t      0
  /dev/sdd1  backup lvm2 a--   698.63g      0
root@fireball / # cryptsetup close 8tb
Device 8tb is still in use.
root@fireball / #


As you can see, lvm doesn't even show the device but it is still under
/dev as tho it is available.  Weird. 

I found this but at the end, the command doesn't help me.  I'm not sure
why.  It does talk about using LUKS on top of LVM causing this problem. 
Since the fix doesn't work, is this a different problem??


https://linux-blog.anracom.com/tag/device-still-in-use/


I've tried every command I can find and it still shows busy.  I even
restarted udev and lvm.  Still busy. 

Ideas?

Dale

:-)  :-)