[gpfsug-discuss] mount: /dev/gpfs01 already mounted or /gpfs01 busy

[Tejas Rao]

"umount -l" returns with "not mounted" message. See below.


[root@ ~]# umount -l /gpfs01
umount: /gpfs01: not mounted

[root@ ~]# umount -l /dev/gpfs01
umount: /dev/gpfs01: not mounted
[root@ ~]#


[root@ ~]# /usr/lpp/mmfs/bin/mmmount gpfs01
Wed Jun 29 11:56:58 EDT 2016: mmmount: Mounting file systems ...
mount: /dev/gpfs01 already mounted or /gpfs01 busy
mmmount: Command failed. Examine previous error messages to determine cause.

Thanks.


On 6/29/2016 11:46, Buterbaugh, Kevin L wrote:
> Hi Tejas,
>
> One thing that I have had occasional success with is a lazy unmount - 
> i.e. “unmount -l /gpfs01”.  Doesn’t help more of the time than it does 
> help in my experience, but it’s one thing I try before bouncing a 
> node.  HTHAL…
>
> Kevin
>
>> On Jun 29, 2016, at 10:43 AM, Tejas Rao <raot at bnl.gov 
>> <mailto:raot at bnl.gov>> wrote:
>>
>> Hi all,
>>
>> I cannot get the filesystem mounted again on few nodes.
>>
>> [root@ ~]# /usr/lpp/mmfs/bin/mmmount gpfs01
>> Wed Jun 29 11:29:50 EDT 2016: mmmount: Mounting file systems ...
>> mount: /dev/gpfs01 already mounted or /gpfs01 busy
>> mmmount: Command failed. Examine previous error messages to determine 
>> cause.
>>
>>
>>
>> Things I have tried and checked.
>>
>>
>>
>> 1. Checked /proc/mounts and /etc/mtab and lsof /dev/gpfs01 and both 
>> /dev/gpfs01 and /gpfs01 are not seen anywhere.
>>
>> 2. Tried mmshutdown/mmstartup and it fails to unload mmfs modules. 
>> See below.
>>
>> 3. mmumount gpfs01 -f
>>
>>
>> A reboot of the client would probably fix it but as the client is 
>> used in production, this is not easy to do.
>>
>>
>> Are there any tricks/hacks to remount the filesystem again without 
>> rebooting the client.
>>
>>
>> [root@~]# /usr/lpp/mmfs/bin/mmshutdown
>> Wed Jun 29 11:10:52 EDT 2016: mmshutdown: Starting force unmount of 
>> GPFS file systems
>> Wed Jun 29 11:10:57 EDT 2016: mmshutdown: Shutting down GPFS daemons
>> Shutting down!
>> 'shutdown' command about to kill process 11431
>> Unloading modules from /lib/modules/2.6.32-504.8.1.el6.x86_64/extra
>> mmfsenv: Module mmfslinux is still in use.
>> Unmount all GPFS file systems and issue the command:
>>  mmfsadm cleanup
>> Unloading module mmfs26
>> ERROR: Module mmfs26 is in use
>> mmfsenv: Error unloading module mmfs26.
>> Unloading module mmfslinux
>> ERROR: Module mmfslinux is in use by mmfs26
>> mmfsenv: Error unloading module mmfslinux.
>> Wed Jun 29 11:11:03 EDT 2016: mmshutdown: Finished
>> [root@~]#
>>
>> Thanks.
>> _______________________________________________
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>
> —
> Kevin Buterbaugh - Senior System Administrator
> Vanderbilt University - Advanced Computing Center for Research and 
> Education
> Kevin.Buterbaugh at vanderbilt.edu 
> <mailto:Kevin.Buterbaugh at vanderbilt.edu> - (615)875-9633
>
>
>
>
>
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