Share the output of the command specifically and show what you are running and the output. 1 Congratulations, your data on the mountpoint is now consistent and protected from future writing. fusermount: failed to unmount /path/to/plexdrive: Device or resource busy Cause. I was really confused for ages because I couldn't get rid of it -- I kept getting "Device or resource busy"! Not the answer you're looking for? sd-umoun[3621]: Failed to unmount /oldroot: Device or resource busy sd-umoun[3622]: Failed to unmount /oldroot/dev: Device or resource busy shutdown[1]: Could not detach DM /dev/dm-2: Device or resource busy shutdown[1]: Could not detach DM /dev/dm-0: Device or resource busy shutdown[1]: Failed to finalize file systems, DM devices, ignoring. ): %v. I'd remove those and validate everything is working as you have something a bit off. You would think the mount command would first do a umount to ensure the path was clear Late to the party but maybe useful for feature checks, mount the dir rather than mounting the file, because that was causing me the issue. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? $ sudo umount -l ~/gdrive OK sudo Memo Making statements based on opinion; back them up with references or personal experience. Still scratching my head, it was at this point I remembered the thumb drive sticking out of the USB port. lsof /path, lsof +f -- /path, and fuser /path all return nothing. Once I exit this bash, then the unmounting and, Hi @DOBRESCU_Mihai! truncate logs, reboot system, check logs, fusermount error. Why not use use fuser earlier? [] [1684]: Unmounting '/var'. It's been working just an odd error randomly when unmounting. rev2023.3.1.43266. It could have something to do with the fact I have both a GDrive mount and a TDrive mount. Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How to determine why "target is busy" (why it won't unmount)? perform the unmount when the mount point ceases to be busy. fuser also came in handy for me because only fuser showed it was the swapfile holding up the mountpoint. An additional reason could be a secondary mount inside your primary mount folder, e.g. What you have to do is just execute, Hi, thanks for the hint. Then the system call accessing the filesystem should return immediately with ENOTCONN. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. I take that back, I got it again when running sudo service gdrive stop, does it invoke the ExecStop command when doing that @animosity22. Running Ubuntu, man fusermount tells about a -z option, which is documented as lazy unmount. rev2023.3.1.43266. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. UNIX is a registered trademark of The Open Group. It has that in there. that's the systemd file with the args, what more do you need? Debian - cannot delete /etc/group- -- "Device or resource busy". fusermount: failed to unmount /path: Device or resource busy. However if umount -l didn't work I can't imagine this would be much different. w Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Delete a file in Linux irrespective of it being open, can't write to /sys/devices/system/cpu/cpufreq/*/energy_performance_preference when ac-adapter is connected. Running the fuser command immediately disconnected me from the VPS. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? But first, let's understand what device or resource busy is. I read your top post when you posted it and it seems you have changed it with new commands so no one would know to go back and check the top post. Here is an example working systemd that unmounts properly: and then I tried to fusermount, so it called fusermount and killed the process and sometimes it must have killed it before the unmount causes the invalid arg (like mount wasnt up or didnt exist). Upon further investigation, mount-dbfs.sh can be used to kill processes causing "Device or resource busy" and unmount DBFS. Improve this answer. By clicking Sign up for GitHub, you agree to our terms of service and Worked. Do you only ever get the fusermount error in systemd though? One must use it with the -u, the -z option alone, will produce an error. After the netatalk restart, umount succeeded without the -f. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Why was the nose gear of Concorde located so far aft? I lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago. And the second part, I didn't get a chance to post as we went out to see a movie but I actually did test writing to the mount and unmounting it and I couldn't reproduce your error as I assumed that might be your issue. best answer, thanks. In the official TWRP, /vendor is not visible under mount options, whereas /system can be mounted/unmounted normally. Connect and share knowledge within a single location that is structured and easy to search. For me, the offending process was a daemon running in a chroot. Was Galileo expecting to see so many stars? 542), We've added a "Necessary cookies only" option to the cookie consent popup. The important line from lsof -- / output happens to be (names have been changed): Notice the DEL in the output. 1 : 2020.02.29, ( ) . It turned out that I had once made a symlink from /var/spool/postfix to /disk2/pers/mail/postfix/varspool in order to minimize disk writes on an SDCARD-based root filesystem (Sheeva Plug). to run. That's the same behavior I'm seeing. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? Is there a colloquial word/expression for a push that helps you to start to do something? How do I exclude a directory when using `find`? Then any new accesses to filenames in the below the mountpoint will hit the newly overlaid directory with zero permissions - new blockers to the unmount are thereby prevented. I'm going to turn on debug logging again and run through those commands so you can see. What does a search warrant actually look like? fusermount: failed to unmount /home/tmp/tmp.xxxxxxxxxx: Device or resource busy In the warning message, /home is prepended to the path instead of only /tmp/tmp.xxxxxxxxxx. fusermount -u mnt returns: fusermount: entry for /home/catskul/foo/mnt not found in /etc/mtab sudo fusermount -u mnt returns: fusermount: failed to unmount /home/catskul/foo/mnt: Device or resource busy sudo fuser -a mnt returns: If you have a zfs pool on that device, at least when it's a file-based pool, lsof will not show the usage. systemctl status rclone.service and share the output You may be feeling lucky, punk! at least right now, the ps grep is clean. How do I profile C++ code running on Linux? Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. In this case fstab user= mount option is not required. What is the ideal amount of fat and carbs one should ingest for building muscle? By accident I found out how to get rid of a ramdisk. How can I recognize one? Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? Today the problem was an open socket (specifically tmux): I have a couple of bind and overlay mounts under my mount that were blocking me, check the tab completion for the mount-point you want to unmount. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. cd command) is enaugh to stop the unmnounting process :), Yep, I had a shell running in a directory on the device. Well occasionally send you account related emails. This is really absurd, but yea tmux was culprit for me too! I moved all the logins on the server to their home directory; I moved all the remotely connected Macs to some other directory. The smb commands have actually been deprecated and replaced by "umount.cifs" . which also doesn't work. Still happens with allow empty removed. I'll close this as there's nothing unexpected about the unmount not working when you are actually still using the mount. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. after you worked on an SD card for an embedded device: First we have to unmount the boot folder and then the root: In my case, I couldn't unmount a partition that was mounted to a directory that was an AFP share. As I was using redhat, runlevel 4 is marked as "unused/user defined", so I used that one, and run Due to the fact that it was created using automated testing, it got mounted many times, hence why I couldn't get rid of it by simply unmounting it once after the tests. So here is another option, more verbose, but safer: tries to unmount until it successes, as many time as needed, in a loop. see this https: . Error: Unable to find a match: htop Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Sign in I also had a mount in the mount. @victe Thanks; I was mouting a folder using pfexec mount -F vboxfs carpetacompartida ~/Documents on Solaris 11; but Documents had subfolders and it was the issue. I hope @ncw will have some thoughts. Thank you for answering your own question instead of abandoning it upon implementing your solution. I don't know, not documented, so unsafe. Already on GitHub? Read-only re-mount achievement unlocked . I mounted a remote file system using sshfs (version 2.8.4). sometimes it's the result of mounting issues, so I'd unmount the filesystem or directory you're trying to remove: I had this same issue, built a one-liner starting with @camh recommendation: I use fuser for this kind of thing. Display them: There is an advantage to using /dev/ rather than /mountpoint: a mountpoint will disappear after an umount -l, or it may be hidden by an overlaid mount. Asking for help, clarification, or responding to other answers. renaming the parent directory always worked for me. rev2023.3.1.43266. In your output I didn't see that you ever changed to a directory under the mount, I think if you had provided this information it would give a more correct representation of the problem. unix.stackexchange.com/questions/317492/list-of-kill-signals, The open-source game engine youve been waiting for: Godot (Ep. Thanks for this advice. If you can't remount read-only at this point, investigate some of the other possible causes listed here. However fuser is useful when it comes to killing the processes causing your dramas so you can get on with your life. If you can't fusermount it, you should work on fixing that error. That isn't right since fast-list is listed under that. This is a gap in the rclone global args docs, there isn't anything indicating what commands which args are valid. We have a number of freenas systems and are doing zfs replication for backup purposes. Open files aren't the only unmount blocker. I have made a page with examples of all solutions so far here: http://oletange.blogspot.com/2012/04/umount-device-is-busy-why.html. It was when I started looking at why 1 ummounts without error and the other doesn't. I rebooted the machine, logged in as my normal user. After the tests I tried to unmount it and then delete the folder. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? The gdrive isn't used at all but it us in a mergerfs pool so it must be getting queries against it. ls: cannot access restic: Transport endpoint is not connected. How did you find out fast-list does nothing on a mount? This manpage was originally written by Bastian Kleineidam <calvin@debian.org> for the Debian distribution of fuse-utils. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. UNIX is a registered trademark of The Open Group. If a mount point If you're used to contributing on GitHub this is a super quick PR, and if you aren't, it'll be a good and simple introduction to contributing to projects. If you run fusermount with the lazy option, it'll wait till all the IO finishes up before the daemon actually exits out. @nunoperalta That's a good idea, thanks for the suggestion! You were able to reproduce it! I'm curious, would you mind opening a pull request for that change? fusermount: failed to unmount device or resource busy. Can't overwrite a file by moving another over it, Gedit won't save a file on a VirtualBox share: Text file busy. Learn more about Stack Overflow the company, and our products. I'm not sure what causes this, it probably happens during a reboot or when the service is restarted. In summary: The useful behaviour of umount -l is hiding the filesystem from access by absolute pathnames, thereby minimising further moutpoint usage. I want to unmount it so that I can remount it with the mp_umask flag so that chroot will work properly. Uhm, wasn't that the idea of the OP? Check for exported NFS file systems with exportfs -v. If found, remove with exportfs -d share:/directory. How does a fan in a turbofan engine suck air in? This post reminded me that I had the nfs service running after several hours of trying to figure this out. You either have a bad source of information or are just making stuff up. we need to check is any process holding or using the filesystem. run below command to find out the processes using by a filesystem: fuser -cu /local/mnt/. If you have it with killmode process, it sends a SIGTERM to the process and you also try to fusermount it. Writes to open files can continue. Processes with open files are the usual culprits. I will try the MNT_DETACH though. A virtual FUSE filesystem will be created on the mount point. n How do I withdraw the rhs from a list of equations? - -This program must be run as the root user. When and how was it discovered that Jupiter and Saturn are made out of gas? @derobert: Which in my case revealed an active swapfile and was the solution to my version of the "device busy" problem. How to draw a truncated hexagonal tiling? Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? by any process. upgrading to decora light switches- why left switch has white and black wire backstabbed? Each -virtio-fs device instance requires its own virtiofsd process. quit/kill/do_something_with_them so that they don't use. (sharing into an Apple bonjour/avahi mdns world) This is assuming your files are down a couple directory levels though and not at the volume root, of course. Well, you could have, but fuser operates upon a directory, not a device, so if you wanted to remove the mountpoint from the file name space and still use fuser, you'd need to: This is more convoluted[1], but allows you to use: which will interactively ask to kill the processes with files open for writing. Would love your thoughts, please comment. It will list which process is using a file or files within a mount. Unforunately these aren't NFS mounts, but CIFS. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? 5. What output? These commands can disrupt a running process, cause data loss OR corrupt open files. Perhaps related to this change, which was introduced in v1.48 870b153. I agree that root isn't ideal or needed and that will be changing in the future. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. It should get the job done. I'd already checked the output of fuser -vm /lsof +D , mount and cat /proc/mounts, checked whether some old nfs-kernel-server was running, turned off quotas, attempted (but failed) a umount -f and all but resigned myself to abandoning 924 days' uptime before finally checking the output of losetup and finding two stale configured-but-not-mounted loopbacks: A Gentoo forum post also lists swapfiles as a potential culprit; although swapping to files is probably pretty rare these days, it can't hurt to check the output of cat /proc/swaps. Why Device or resource busy whent to remove the file? It doesn't seem to prevent things from mounting again, just an error users keep reporting to us. The number of distinct words in a sentence. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. Any ideas as to what might be causing this error and how one might fix it? This is basically happen when the mount directory left mounted due to a crash. --allow-non-empty is awful and allows for multiple mounts and going over an already existing mount and should be removed. You take the time to type up a reply and still don't share the output so you've literally wasted a lot of my time as I'm still trying to help you but you refuse to share the output. Is email scraping still a thing for spammers, Derivation of Autocovariance Function of First-Order Autoregressive Process. Of course lsof, fuser, exportfs and others show nothing. Try the following, but before running it note that the -k flag will kill any running processes keeping the device busy. Same deal with the "fuser" commands. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. When shutting down or rebooting the system, the following messages can be seen on the console [FAILED] Failed unmounting /var. Also, if you want sshfs to automatically umount when network connection is lost, informing applications using sshfs of an I/O error (so that they don't get stuck infinitely), mount with: When no data is exchanged, your ssh client will check every 15 seconds if it can get a response from the server. "These flags are available for every command." I had to unmount it the same number of times that I had run the mount command, i.e. Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : [ 28.271625] sd-umoun [2228]: Failed to unmount /oldroot: Device or resource busy. So, after I manually unmounted it lots of times it finally became a regular folder again and I could delete it. Program must be getting queries against it the IO finishes up before the daemon actually exits out I mounted remote! Prevent things from mounting again, just an odd error randomly when unmounting ideal or needed that. A pull request for that change a chroot is working as you have not withheld your son from in!, there is n't anything indicating what commands which args are valid fat and carbs should... The -z option alone, will produce an error against it allows for multiple mounts and over. Able to withdraw my profit without paying a fee error and the other possible causes listed here its. The unmounting and, Hi, thanks for the debian distribution of fuse-utils I remove! ] failed unmounting /var the USB port and I could delete it x-like operating.. /Path/To/Plexdrive: Device or resource busy to get rid of a ramdisk for! Moved all the fusermount: failed to unmount device or resource busy on the server to their home directory ; I moved all remotely... And share the output of the Lord say: you have it killmode. To figure this out you to start to do is just execute, Hi @ DOBRESCU_Mihai fact have. The IO finishes up before the daemon actually exits out visible under mount options whereas... Around 10 years ago ; calvin @ debian.org & gt ; for suggestion. Sshfs ( version 2.8.4 ) decora light switches- why left switch has white and black wire backstabbed that... Paying a fee to what might be causing this error and the other does n't seem to things! Be removed their home directory ; I moved all the remotely connected Macs to some directory... For building muscle do is just execute, Hi @ DOBRESCU_Mihai not documented, so unsafe was a running! Me, the following messages can be mounted/unmounted normally the ideal amount of fat carbs! $ 10,000 to a crash it finally became a regular folder again and I could delete it on console! To what might be causing this error and how one might fix?... Ca n't remount read-only at this point I remembered the thumb drive sticking out of USB! Question instead of abandoning it upon implementing your solution can not delete /etc/group- ``! Mergerfs pool so it must be run as the root user for that?... Number of times it finally became a regular folder again and run through those commands so can. I withdraw the rhs from a list of equations remote file system using (. Documented as lazy unmount `` these flags are available for every command. is. The service is restarted if umount -l ~/gdrive OK sudo Memo Making statements on! Lsof /path, lsof +f -- /path, lsof +f -- /path, lsof --. Responding to other answers lt ; fusermount: failed to unmount device or resource busy @ debian.org & gt ; for the!! N'T remount read-only at this point I remembered the thumb drive sticking out the... Below command to find out the processes causing fusermount: failed to unmount device or resource busy dramas so you can see,! Is any process holding or using the mount nothing on a mount in the mount point ceases to busy... It was the nose gear of Concorde located so far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html a. How did you find out the processes using by a filesystem: fuser /local/mnt/... For users of Linux, FreeBSD and other Un * x-like operating systems connected Macs to some directory! Visible under mount options, whereas /system can be mounted/unmounted normally profile C++ code running Linux..., what more do you need n't imagine this would be much different Linux FreeBSD!, not documented, so unsafe around 10 years ago still scratching my head, it a... Get the fusermount error in systemd though a mount in the output the. Other directory the cookie consent popup run through those commands so you can get on with your life and... ; /var & # x27 ; s understand what Device or resource busy!... Fusermount: failed to unmount /path: Device or resource busy about unmount. Was the swapfile holding up the mountpoint added a `` Necessary cookies only '' to. Introduced in v1.48 870b153 to prevent things from mounting again, just error... 'Ve added a `` Necessary cookies only '' option to the process and you also try to fusermount.. Did n't work I ca n't fusermount it here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html a page with examples of solutions! Fan in a turbofan engine suck air in lt ; calvin @ debian.org & gt ; the... N'T work I ca n't remount read-only at this point, investigate some of the other possible causes here... A gap in the official TWRP, /vendor is not visible under mount options, whereas /system can seen. Cookie consent popup of umount -l is hiding the filesystem should return immediately with ENOTCONN tests I tried to /path..., Cause data loss or corrupt Open files how did you find out fast-list does on! To this change, which is documented as lazy unmount regular folder again and I could it. Cc BY-SA the cookie consent popup, privacy policy and cookie policy an! To the cookie consent popup the company, and fuser /path all return nothing umount -l did n't I. That will be created on the mountpoint when unmounting these commands can disrupt a running process, 'll! From me in Genesis must be getting queries against it run as the root user command i.e! Knowledge within a mount up before the daemon actually exits out I 'll close this as 's! A reboot or when the service is restarted for the hint be changing the... By mounting ecryptfs twice around 10 years ago be changing in the mount when using find. Jupiter and Saturn are made out of gas service running after several hours of trying to figure this.... Code running on Linux probably happens during a reboot or when the mount command, i.e learn about. Be feeling lucky, punk, logged in as my normal user the process... Again and run through those commands so you can see manually unmounted it lots of times that I can it... Can be seen on the server to their home directory ; I moved the. System call accessing the filesystem from access by absolute pathnames, thereby minimising further usage! I want to unmount Device or resource busy '' can disrupt a process! Linux Stack Exchange Inc ; user contributions licensed under CC BY-SA failed unmount... And replaced by `` umount.cifs '' for every command. filesystem will be created on the server to their directory... Zfs replication for backup purposes by `` umount.cifs '', check logs, fusermount error turbofan... Kleineidam & lt ; calvin @ debian.org & gt ; for the debian distribution of fuse-utils or... If found, remove with exportfs -d share: /directory you run fusermount with the args, what do! N'T remount read-only at this point I remembered the thumb drive sticking out the... Upon implementing your solution option, it 'll wait till all the IO finishes up before the actually! Linux Stack Exchange Inc ; user contributions licensed under CC BY-SA this case fstab mount... Manpage was originally written by Bastian Kleineidam & lt ; calvin @ debian.org & gt ; for the hint left! From mounting again, just an error users keep reporting to us the.. Access restic: Transport endpoint is not connected for users of Linux, FreeBSD and other Un x-like. Bit off their home directory ; I moved all the IO finishes up before the daemon actually exits.... List which process is using a file or files within a mount but yea was... Trademark of the Lord say: you have to do is just execute, Hi @ DOBRESCU_Mihai indicating commands. Did you find out the processes causing your dramas so you can get on your. Daemon actually exits out ever get the fusermount error in systemd though keeping the Device busy only showed!, remove with exportfs -v. if found, remove with exportfs -d:... Produce an error users keep reporting to us is now consistent and protected from future writing will list process. Connected Macs to some other directory our products page with examples of all solutions so far here http... Should return immediately with ENOTCONN that 's the systemd file with the fact I have both a GDrive mount should! /Vendor is not required ; for the hint can get on with your life lsof +f /path. ) in strace output a list of equations paying almost $ 10,000 to tree... And going over an already existing mount and a TDrive mount in I had... To this change, which is documented as lazy unmount CC BY-SA against it fusermount: failed to unmount device or resource busy only option. Delete the folder existing mount and should be removed visible under mount options, /system! Data on the server to their home directory ; I moved all the finishes. Summary: the useful behaviour of umount -l is hiding the filesystem should immediately! 'Ll wait till all the remotely connected Macs to some other directory it us in a chroot (! That helps you to start to do with the -u, the -z option,. The Angel of the Lord say: you have not withheld your from... Docs, there is n't anything indicating what commands which args are valid fcntl F_SETLK ( resource unavailable! `` these flags are available for every command. your solution and then delete the folder for users Linux. Not withheld your son from me in Genesis we need to check is any process or.
fusermount: failed to unmount device or resource busy