My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
thanks, Dave
Try "umount -fl" ('eff el')
On Tue, Feb 2, 2016 at 1:58 PM, Dave Burns tburns@hawaii.edu wrote:
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
thanks, Dave _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
umount -fl /mount/point And configure it after with autofs
Sent from my iPhone
On Feb 2, 2016, at 20:00, Phelps, Matthew mphelps@cfa.harvard.edu wrote:
Try "umount -fl" ('eff el')
On Tue, Feb 2, 2016 at 1:58 PM, Dave Burns tburns@hawaii.edu wrote:
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
thanks, Dave _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
-- Matt Phelps System Administrator, Computation Facility Harvard - Smithsonian Center for Astrophysics mphelps@cfa.harvard.edu, http://www.cfa.harvard.edu _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Thanks. How did I miss that -l switch? Unfortunately, I went into panic mode and just rebooted, but I'll know next time. Dave
On Tue, Feb 2, 2016 at 9:00 AM, Phelps, Matthew mphelps@cfa.harvard.edu wrote:
Try "umount -fl" ('eff el')
On Tue, Feb 2, 2016 at 1:58 PM, Dave Burns tburns@hawaii.edu wrote:
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they
hang. I
am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
thanks, Dave _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
-- Matt Phelps System Administrator, Computation Facility Harvard - Smithsonian Center for Astrophysics mphelps@cfa.harvard.edu, http://www.cfa.harvard.edu _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Dave Burns wrote:
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
*IF* I understand what you're saying, on that one client, you're trying to umount the nfs share. Is that the case?
IF that is the case... is autofs running? If so, service autofs stop, and you should be able to umount it.
mark
On Tue, Feb 2, 2016 at 9:23 AM, m.roth@5-cent.us wrote:
Dave Burns wrote:
My NFS server is up and other clients can access x. One particular client can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang. I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
*IF* I understand what you're saying, on that one client, you're trying to umount the nfs share. Is that the case?
IF that is the case... is autofs running? If so, service autofs stop, and you should be able to umount it.
mark# service autofs stop results in fail. Maybe need #rm /var/run/autofs.pid?
Dave
Dave Burns wrote:
On Tue, Feb 2, 2016 at 9:23 AM, m.roth@5-cent.us wrote:
Dave Burns wrote:
My NFS server is up and other clients can access x. One particular
client
can't. I tried to unmount the NFS share:
[root@nfsclient ~]# umount -f /disk/x umount2: Device or resource busy umount.nfs: /disk/x: device is busy umount2: Device or resource busy umount.nfs: /disk/x: device is busy
If I use df or lsof to try to figure out what process to kill, they hang.I am reluctant to just reboot, as many other users are getting stuff done. dmesg doesn't show anything useful.
How to get unstuck?
*IF* I understand what you're saying, on that one client, you're trying to umount the nfs share. Is that the case?
IF that is the case... is autofs running? If so, service autofs stop, and you should be able to umount it.
# service autofs stop results in fail. Maybe need #rm /var/run/autofs.pid?
Ok, ps -ef | grep auto, and see if it's running; or are you saying it *said* shutting it down failed? Oh, and is this CentOS 6 or 6 (service, or systemctl)?
If it's already shut off, and lsof doesn't help, does doing a df help? Perhaps it might show someone's workspace, or home directory mounted, so you know who to kill?
mark
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Dave Burns -
m.roth＠5-cent.us -
Phelps, Matthew -
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