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 <[email protected]<mailto:[email protected]>> 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. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org<http://spectrumscale.org> http://gpfsug.org/mailman/listinfo/gpfsug-discuss — Kevin Buterbaugh - Senior System Administrator Vanderbilt University - Advanced Computing Center for Research and Education [email protected]<mailto:[email protected]> - (615)875-9633
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