[Bug 974374] Re: Error on unmounting a NFSv4 share
My double slash in /proc/mounts experience was as follows: - trying umount /mnt/target got me two 'not found' lines; - trying umount.nfs4 /mnt/target got me one 'not found' line; - workaround: edit /etc/mtab and delete the matching line (even if correct) then re-run umount.nfs4 /mnt/target. Other people reaching this page, please click "affects me" on top (just below the error description/title). The more affected users the better. Otherwise this will not get the attention and priority it deserves. My kernel was 3.19.0-58 on R12.04 (precise). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
Two identical error messages on trying to umount an NFS mount as follows : /export/home/nfshomes was not found in /proc/mounts /export/home/nfshomes was not found in /proc/mounts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
We get this problem on servers 12.04.5 running Trusty kernel 3.13.0-65-generic (and on 12.04.4 running Quantal kernel 3.5.0-54 ) /etc/fstab has a slash at the start of the NFS server path /proc/mounts has an unnecessary extra "/" on the NFS path: like this :- nfs-server://home/users /export/home/nfshomes nfs4 . whereas /etc/mtab correctly does not ... nfs-server:/home/users /export/home/nfshomes This is a nasty bug in a basic utility (umount.nfs) and really should be fixed !! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
uuhhh, probably someone repaired this to bits. I did a nfs mount using the leading slash (wondering what may be on so.'s mind to omit it???), and got into exatly that problem, OS stating not found in /proc/mounts, because of different entries there and in /etc/mtab. But in my case there are two slashes in /proc/mounts!!! uname -a: Linux ubuntubert 3.2.0-88-generic #126-Ubuntu SMP Mon Jul 6 21:33:03 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux Although I could unmount editing /etc/mtab, this is a bug and should be fixed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
Same here on 12.04 with kernel 3.2.0-70-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
Still seeing this on 12.04 with kernel 3.8.0-29-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
This did belong in nfs-utils as it provides the (u)mount.nfs4 helpers. ** Package changed: util-linux (Ubuntu) = nfs-utils (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
We saw today the same error on our linux boxes after a takeover has been executed on the netapp heads. All mountpoints we're visible as /mountpoint (deleted) in /proc/mounts - however the mountpoints were still usable but couldn't be unmounted without the /etc/mtab workaround (add \040(deleted) to the end of mount path). Uname -a: Linux hostname-3 3.2.0-49-generic #75-Ubuntu SMP Tue Jun 18 17:39:32 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
Just got hit by the same thing and completely unrelated to comment #4. We had this with fully formed paths (with slashes) and an NFS server that went away suddenly. Trying unmount with -f , -l and those two flags in combination did not solve the issue. When I tried the suggestion in #7 I found it only has the effect of removing the line describeing the mount in /etc/mtab but not in /proc/mounts or actually doing an umount. This is why, I think, the poster gets the hang in his next comment (#8) as the mount is not actually unmounted, just no longer tracked in /etc/mtab. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
Forgot to inlcude uname -a: 3.2.0-51-generic #77-Ubuntu SMP Wed Jul 24 20:18:19 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux This is also tracked here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711183 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711184 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711187 ** Bug watch added: Debian Bug tracker #711183 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711183 ** Bug watch added: Debian Bug tracker #711184 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711184 ** Bug watch added: Debian Bug tracker #711187 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711187 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
This is not a graceful unmount. You still hang if you try to ls/cd the mount path. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
I managed to solve the \040(deleted) problem. Edit the /etc/mtab, add the \040(deleted) to the end of mount path, then use mount to show the new path. Then you can use the umount.nfs4 /your/mount/path (deleted) -f to umount it. Linux xx 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
I'm seeing this too - \040(deleted) added to the end of the entry in /proc/mounts - the entry there is the only different anywhere else. I hated the 'hang' you would get with a stale NFS v3 mount but it was a heck of a lot better than being forced to reboot a server! What is the workaround for this bug? Any time frame on a fix? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
I think the remote volume with/without leading slash is different to the \040(deleted) problem. I have a machine in the latter state: # grep monster3 /etc/mtab 192.168.6.117:/share /media/monster3 nfs4 rw,noatime,addr=192.168.6.117,clientaddr=192.168.6.110 0 0 # grep monster3 /proc/mounts 192.168.6.117:/share /media/monster3\040(deleted) nfs4 rw,noatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=192.168.6.110,minorversion=0,local_lock=none,addr=192.168.6.117 0 0 # umount /media/monster3 /media/monster3 was not found in /proc/mounts /media/monster3 was not found in /proc/mounts root@proliant:~# umount /media/monster3 root@proliant:~# umount /media/monster3 umount: /media/monster3 : not found root@proliant:~# umount /media/monster3 (deleted) umount: /media/monster3 (deleted): not found I tried some variations of editing what's in /etc/mtab, adding \040 or \040(deleted), and variations of what I pass to umount, to no avail. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
This problem is not limited to stale mounts. It's an error in the interaction between mount, umount and mount details in /proc/mounts vs /etc/mtab In /etc/mtab, nfs4 mounts seem to have a problem with leading slashes. For example, on my 12.04 client machine, mounting a zfs volume on a 12.04 host, the following works fine: me@client:/$ sudo mount -t nfs bighost:/remotevol /mnt/target me@client:/$ sudo umount /mnt/target me@client:/$ No issues. However, the mount command will accept the volume spec without the leading slash and mount it: me@client:/$ sudo mount -t nfs bighost:remotevol /mnt/target me@client:/$ sudo umount /mnt/target /mnt/target was not found in /proc/mounts /mnt/target was not found in /proc/mounts me@client:/$ And the the remotevol is not unmounted. umount fails to identify the mounted volume in /proc/mounts because, when mounted without the leading slash, it is denoted differently between /proc/mounts and the entry in /etc/mtab me@client:/$ grep /mnt/target /etc/mtab bighost:remotevol /mnt/target nfs rw,vers=4,addr=192.168.1.19,clientaddr=192.168.1.128 0 0 me@client:/$ grep /mnt/target /proc/mounts bighost:/remotevol/ /mnt/target nfs4 rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.128,minorversion=0,local_lock=none,addr=192.168.1.19 0 0 To fix at time of the error, edit mtab for the un-umountable volume and add a leading slash to the volume path specifier... then unmount and it will work. To prevent the error occurring, always specify volume paths with a leading slash on the command line or in fstab... Real fix... I guess mount should require a leading slash on the volume name, and it's a bug that it doesn't? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
We just had a similar incident.
The local server autofs mounts a remote NFS. The remote server unexpectidly
powered off (no normal shutdown). The remote server was powered back on however
the local server was not able to access the remote NFS's. It appears the local
server never umounted the remote NFS's. When you did and ls -l a bunch of
question marks would appear. We attempted umount the remote mounts but the
local server kept saying: {mount} was not found in /proc/mounts.
root@mysql02:/etc# df
Filesystem1K-blocks Used Available Use% Mounted on
/dev/mapper/mysql02-root 716514760 11255404 668862508 2% /
udev6143968 46143964 1% /dev
tmpfs 2461300 5162460784 1% /run
none 5120 0 5120 0% /run/lock
none6153244 06153244 0% /run/shm
/dev/sdg1233191 98407 122343 45% /boot
/dev/md0 3845737480 590404808 3059980404 17% /d01
logilive:/opt/logisoft816146560 176438624 597581376 23%
/net/logilive/opt/logisoft
lwt1:/opt/logisoft 24520704 11627520 11646976 50%
/net/lwt1/opt/logisoft
root@mysql02:/etc# umount /net/logilive/opt/logisoft
/net/logilive/opt/logisoft was not found in /proc/mounts
/net/logilive/opt/logisoft was not found in /proc/mounts
we could never get the local server to umount the remote server. We had
to reboot the local server.
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Error on unmounting a NFSv4 share
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[Bug 974374] Re: Error on unmounting a NFSv4 share
I can't imagine why the kernel is deleting a mount point here, stale mount or otherwise. But it seems to me this is a bug in umount from util-linux, not in nfs-utils. ** Package changed: nfs-utils (Ubuntu) = util-linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
This also happens when unmounting a stale NFS share nas:/raid/www /home/www\040(deleted) nfs4 rw,noatime,vers=4,rsize=8192,wsize=8192,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=10,sec=sys,clientaddr=192.168.100.11,minorversion=0,local_lock=none,addr=192.168.100.40 0 0 root@back2:~# umount -f /home/www /home/www was not found in /proc/mounts /home/www was not found in /proc/mounts It can't find /home/www in /proc/mounts because it has been renamed to /home/www\040(deleted) by the kernel ** Changed in: nfs-utils (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 974374] Re: Error on unmounting a NFSv4 share
** Changed in: nfs-utils (Ubuntu) Importance: Undecided = High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/974374 Title: Error on unmounting a NFSv4 share To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/974374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
