fusermount: failed to unmount device or resource busy

The only thing that worked was pkill -9 sshfs. In above example you are using /mnt. It will list which process is using a file or files within a mount. It will tell what the process(es) are using the filesystem. linux . truncate logs, reboot system, check logs, fusermount error. gdrive.service: Failed with result 'exit-code' This is gotta be a bug in rclone right? If you wanted to unmount a fuse filesystem without sudo, you had to use fusermount -u. In the meantime, this is how you can try and reproduce. Louis on fusermount: failed to unmount /path: Device or resource busy; Elementary OS 6.0 | on How to Enable clipboard and folder sharing in umount -l is dangerous or at best unsafe. (sharing into an Apple bonjour/avahi mdns world) Firdaus Ahmad June 20, 2020 Problem Solving 1 Comment. are patent descriptions/images in public domain? Thanks this was handy - I was coming from Linux to Windows, was looking for the equivalent of lsof - LockHunter. fusermount: failed to unmount device or resource busy. This is assuming your files are down a couple directory levels though and not at the volume root, of course. Would love your thoughts, please comment. Thanks for the tip! So it seems like this happens when the mount is in use when running fusermount -uz, So I unmounted the thumb drive partitions (unmounting one automatically unmounted the other) and safefly unplugged the thumb drive. (You'll need to run umount on the mountpoint twice if you've bind mounted a mode 000 directory on top.). Stopping DBFS failed as shown: Find centralized, trusted content and collaborate around the technologies you use most. This is highly expected. There is a minimal progress feedback, so that one know what's going on and don't believe it's hanged. The one that matters most is a log file and the loglevel. rm: cannot remove .nfs00000024d296fc2f00086d4d: I also know allow-empty isn't ideal, I've since made changes to the project to remove the need for that option. thanks for the help. 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. Instead of using lsof to crawl through the file system, just use the total list of open files and grep it. @psusi, that is incorrect. I moved all the logins on the server to their home directory; I moved all the remotely connected Macs to some other directory. unix.stackexchange.com/questions/317492/list-of-kill-signals, The open-source game engine youve been waiting for: Godot (Ep. You may be feeling lucky, punk! best answer, thanks. I'll get back to you with more log output. NFS cannot remove a file that is used. The solution was to do sudo zpool export mypool and then unmount. How did you find out fast-list does nothing on a mount? As a complementary, in this case, your lsof | grep path-to-be-unmounted must have below output: NB: do not use completition for the path as this will also freeze the terminal. These options do have value, this isn't just for 1 personal system. lsof could not find any open files but, Yep, worked for me, too. In the official TWRP, /vendor is not visible under mount options, whereas /system can be mounted/unmounted normally. Some directories cannot be deleted if the device or resource is busy. So maybe it's not handling a lazy unmount properly when it's busy. I recently had a similar need to unmount in order to change it's label with gparted. I find this returns must faster, although it's less accurate. behaviour of the operation: MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. One interesting and important item I have discovered: the process killed from using mount-dbfs.sh is ***not**** the same as shown from fuser. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. So I restarted the netatalk daemon on the server. Super User is a question and answer site for computer enthusiasts and power users. see this https: . I only really use TDrive. You signed in with another tab or window. I connected to the other active screen session and its shell wasn't even currently sitting in the mounted directory. to interactively kill the remaining read-only processes blocking the unmount. Here it was a /mnt/dev bind to /dev that I had created to be able to repair my system inside from the chroot jail. It only takes a minute to sign up. So, also check. Could very old employee stock options still be accessible and viable? Bacon saved. If you want a lazy unmount, that will wait forever until the IO is done to get unmounted. Cloud storage cannot be mounted. Super User is a question and answer site for computer enthusiasts and power users. Maybe the scratching helped. Asking for help, clarification, or responding to other answers. Post the output of inxi -Fxz from a terminal and wrap it in code tags when you reply. Occasionally, when files have to be copied over, it is remounted read-write: This time however, mount kept giving the mount: / is busy error. I'm gonna step back from this for a bit. Again, you haven't shared anything, a log, a command you are running. Share. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Let me know if you need help. Learn more about Stack Overflow the company, and our products. I have an s3fs-fuse "device" mounted at /mnt/s3. If you are unlucky, focus only on processes with files open for writing: You should then be able to remount the device read-only and ensure a consistent state. Some program is using a file in the filesystem you're trying to unmount. I had forgotten to unmount a dual partitioned thumb drive with a mountpoint on /dev/hda1 first. It appears that I'm stuck with not being able to umount while its busy. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? to your account, Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. I think your suggestion is incorrect. linux. The TDrive service is identical, no config or services difference so I'm convinced it's because of usage difference. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. lsof /path, lsof +f -- /path, and fuser /path all return nothing. When you edit something, no notification happens. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. I will try the MNT_DETACH though. Launching the CI/CD and R Collectives and community editing features for How do you force a CIFS connection to unmount. 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. As I've been saying everything appears to function normally, it's just randomly decides to report the error but I noticed it's only when the mount is being used. 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. Connect and share knowledge within a single location that is structured and easy to search. How can I recursively find all files in current and subfolders based on wildcard matching? See the Examples section below. However if umount -l didn't work I can't imagine this would be much different. sudo systemctl daemon-reload If you have it with killmode process, it sends a SIGTERM to the process and you also try to fusermount it. For me, the offending process was a daemon running in a chroot. It's been working just an odd error randomly when unmounting. I had this issue, and it turned out that there were active screen sessions in the background I didn't know about. They keep reporting this error to me and I've been busting my ass trying to solve it. Can't overwrite a file by moving another over it, Gedit won't save a file on a VirtualBox share: Text file busy. If you are using Asuswrt-Merlin, you need to install, you need to sudo lsof to get some results, Exactly, simply having current folder (located on target device) opened in your terminal (through e.g. http://oletange.blogspot.com/2012/04/umount-device-is-busy-why.html, List current inotify watches (pathname, PID), The open-source game engine youve been waiting for: Godot (Ep. Before unmounted the filesysem. Each -virtio-fs device instance requires its own virtiofsd process. Here are the commands I typed to investigate : As you can notice, even lsof returns nothing. [ 4044.873100] sd-umount[8299]: Failed to unmount /oldroot: Device or resource busy [ 4044.839977] sd-umount[8300]: Failed to unmount /oldroot/sys: Device or resource busy [ 4044.290367] shutdown[1]: Failed to finalize file systems, ignoring. So share those logs and the same output as above if you can reproduce it. I don't know, not documented, so unsafe. toolchain . It's kind of broken, though. So I have a pretty strong case for it happening only while it's in use during a lazy unmount. Of course lsof, fuser, exportfs and others show nothing. Linux is a registered trademark of Linus Torvalds. Is quantile regression a maximum likelihood method? [] [1684]: Unmounting '/var'. Since version 2.34 the umount command can be used to perform umount operation also for fuse filesystems if kernel mount table contains user's ID. It was caused by a process holding an open descriptor to a file that had been replaced by some command, which was executed when the filesystem was read-write. Check for exported NFS file systems with exportfs -v. If found, remove with exportfs -d share:/directory. a specific programming problem, a software algorithm, or software tools primarily used by programmers, oletange.blogspot.dk/2012/04/umount-device-is-busy-why.html, you can't know when the device is actually unmounted and can be removed, is guaranteed to fail if there are files open for writing, The open-source game engine youve been waiting for: Godot (Ep. I've got some samba drives that are being accessed by multiple users daily. privacy statement. 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. we need to check is any process holding or using the filesystem. Perhaps related to this change, which was introduced in v1.48 870b153. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. [*] All kadaitcha men are liars. By clicking Sign up for GitHub, you agree to our terms of service and It doesn't actually unmount the device, it just removes the filesystem from the namespace. Making statements based on opinion; back them up with references or personal experience. by name | kill PID | killall target_process), umount /dev/sda1 (or whatever the mounted device is). I want to know, if I remove a drive from my SQL table (effectively taking it offline) how, or even is, there a way to unmount a busy device? It worked! A code search did not find that string. YES!! Apparently, this is the Correct Version that has solved this Problem: Thanks for contributing an answer to Super User! If 3 checks fail, it will disconnect and umount. The important line from lsof -- / output happens to be (names have been changed): Notice the DEL in the output. Is quantile regression a maximum likelihood method? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Could you check your logs just to confirm? rev2023.3.1.43266. Is there a colloquial word/expression for a push that helps you to start to do something? Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : If you suspect you have something left running in a chroot, sudo ls -l /proc/*/root | grep chroot will find the culprit (replace "chroot" with the path to the chroot). Click to enlarge. After the netatalk restart, umount succeeded without the -f. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Type the command to unmount /mnt forcefully: # fuser -km /mnt. as in example? Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. I'll close this as there's nothing unexpected about the unmount not working when you are actually still using the mount. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. systemctl stop rclone.service and share the output. @animosity22 vfs-cache-max-size off They won't appear in lsof +f -- /dev/, so you'll need to: For killing processes holding anonymous inodes, see: List current inotify watches (pathname, PID). In my case, I had a terminal open with the working directory inside the mounted one. I had to use exportfs -ua to remove the lock. The best answers are voted up and rise to the top, Not the answer you're looking for? Your systemd file is also not quite right. Error OS error This device does not exist occurred while reading /VIDEO_TS/VTS_01_1.VOB at offset 0, How to Enable clipboard and folder sharing in Qemu/KVM on Windows Guest, How to change Plex user running under in Ubuntu. :-). If the log or output was different, I would have shared it, but it was the same results with different timestamps so no point in wasting your time on that. Running Ubuntu, man fusermount tells about a -z option, which is documented as "lazy unmount". Thank you! run below command to find out the processes using by a filesystem: fuser -cu /local/mnt/. For example, I stop the service, reload daemon, restart them. Seems to be working fine in the output you shared. Linux 2.1.116 added the umount2() system call, which, like umount(), fusermount: failed to unmount /path: Device or resource busy. I just had this problem and could not kill -9 the process reading from the mounted filesystem. Thanks though! Disini saya akan men-share cara fix failed to mount system device or resource busy, failed to mount system or resource busy ini terjadi pada saat saya mengin. The device won't be mounted, and when you're finished doing whatever, remove flag and reboot again. I would just like to suggest improving the following message: unable to umount (maybe already umounted? Killing those other shell sessions fixed the issue for me. renaming the parent directory always worked for me. Writes to open files can continue. After the tests I tried to unmount it and then delete the folder. we need to check is any process holding or using the filesystem. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. ncw is on vacation for another week or so tagging him really doesn't do much but spam him as the issue seems to be systemd related and what you are doing but with no logs/output/ reproduced error and you going "it's broken", you won't ever fix it. This doesn't work in my situation, there simply is no .xyz file. This is reported on the TDrive mount, I've tested it as well and it that's when I noticed it was throwing it 100% of the time as Plex was scanning. 10. You signed in with another tab or window. /dev/sda1 was being mounted via /etc/fstab as /media/myusername. Exiting the terminal or changing directories to a local share then running fusermount -u solves my problems. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? In my case I was trying to modify the LVM as I wanted to make the /var partition bigger, so I needed to umount it. What you have to do is just execute, Hi, thanks for the hint. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. The program drops privileges where . Browse other questions tagged. Someone has mentioned that if you are using terminal and your current directory is inside the path which you want to unmount, you will get the error. Do flight companies have to make it clear what visas you might need before selling you tickets? After doing so, I was able to unmount /dev/sda1 (having nothing mounted on it anymore), relabel it with gparted, remount both the drive and thumb drive with no issues whatsoever. - -This program is designed to work with QEMU's ``--device vhost-user-fs-pci`` -but should work with any virtual machine monitor (VMM) that supports -vhost-user. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, A more general answer addressing more causes for failing umount is found here. 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. @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. In Windows, I would have used LockHunter to resolve this. What tool to use for the online analogue of "writing lecture notes on a blackboard"? at least right now, the ps grep is clean. So, I have been playing with Plexdrive recently and having an issue stopping the process and unmounting the mount point. 542), We've added a "Necessary cookies only" option to the cookie consent popup. No match for argument: htop There is a way to detach a busy device immediately (even if it is busy and cannot be unmounted forcefully). This appears to have started happening in v1.48 or possibly one before that. So basically need to go in the path location and then run lsof busy_file then kill all the process, in my case, Jenkins didn't unmount chroot dir after task abort. These don't show up in the fuser/lsof listing, and can prevent umount from succeeding. Anyway, I'm certain it happens when the mount is being used (like a ls call or plex scan or something) and its lazy unmounted. b/c the output isn't helpful. Other than that - thanks! Option "user" work for mount, not for umount. Is quantile regression a maximum likelihood method? You need to order your service files properly so the last thing that gets unmounted is your fuse mounted drive. Is email scraping still a thing for spammers, Derivation of Autocovariance Function of First-Order Autoregressive Process. The solution is pretty easy. I shared it all already. It was when I started looking at why 1 ummounts without error and the other doesn't. could it be this, should it be 0 instead. There are several things to consider. Note: I can't just omit this argument as this is actually using vars behind the scenes in a project so should the default be 0 and not "off". What does a search warrant actually look like? I tried to rm -rf a folder, and got "device or resource busy". Once I move somewhere else (e.g. Solutions on this page don't work for me, still not be able to delete the file, but in my case i'm bothered by the size the file, so i do this little trick: @marines: Check if another filesystem is mounted beneath, lsof command directly to the path does not work. Basically, if the mountpoint is mounted under the / filesystem, you'd want to avoid this. A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. fuser can also be used, but to my mind lsof has a more useful output. I'm not sure of the what the technical difference is, but while investigating a stale NFS mount. Why is the article "the" used in "He invented THE slide rule"? The nfs-kernel-server probably goes behind the normal open files and thus is not listed by lsof and fuser. This same behaviour can be achieved by mounting an empty directory with permissions 000 over the directory to be unmounted. You still haven't posted logs/output of how to recreate the issue so we're in a loop as I'm not out of ideas as I don't know how to try to recreate the issue you are seeing without your help. If you can't remount read-only at this point, investigate some of the other possible causes listed here. "These flags are available for every command." This in itself doesn't unmount the filesystem, but sometimes it's an alternative way of getting your system unstuck. Asking for help, clarification, or responding to other answers. Well occasionally send you account related emails. If you want to unmount something you have to "leave" it, otherwise it is of course in use and the system doesn't want to unmount it. to your account, restic 0.9.6 compiled with go1.13.4 on linux/amd64. 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. When I sent Ctrl+C signal, the "restic" mount should be un-mounted. Would the reflected sun's radiation melt ice in LEO? With this symlink, even after stopping the postfix and dovecot services (both ps aux as well as netstat -tuanp didn't show anything related) I was not able to unmount /disk2/pers. 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. This option is acceptable from a shell script; for command line interaction, the use of the -z option is more handy, but one must probably be aware the man page does not document it and there may be doubt about what it exactly do. expired. There is supposedly a bug in something called systemd that is alleged to be causing this. sda3 In my case it was docker that was holding the file. 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. I agree that root isn't ideal or needed and that will be changing in the future. It has that in there. that's the systemd file with the args, what more do you need? Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy If you find something in the docs that needs to be adjusted, feel free to submit a pull request to make something clear as that's the beauty :). Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? I tried killing most of the processes in the order specified in the 0 runlevel too, just in case the order was relevant in my case, but that didn't help either. w No clue why. MNT_FORCE or MNT_DETACH. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 7. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Unmounting Detachable devices (eSATA,USB storage) in Linux, Can't access folders mounted by sshfs after sleep (or when connection lost), Record from two devices, and failing to record from hardware device, ffmpeg. What does in this context mean? What's the linux equivalent? I hope @ncw will have some thoughts. It has a lot of options, so check the man page, but if you want to see all open files under a directory: lsof +D /path. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? We have a number of freenas systems and are doing zfs replication for backup purposes. Code: Select all. That isn't right since fast-list is listed under that. systemctl status rclone.service and share the output Dunno, you never share any output / systemd file / error messages so it's all guessing. sudo 36302 root cwd DIR 8,21 4096 1048577 /media - -This program must be run as the root user. I rebooted the machine, logged in as my normal user. systemctl start rclone.service To subscribe to this RSS feed, copy and paste this URL into your RSS reader. So the summary is: process having a file opened that was removed. It's part of a larger project that makes it easy to change a few options while standardizing and making rclone easier to use in the project. Try using lsof to find who use it. I am running ZFS, and after lazy umounting the volume, I got an error message: Which is not a mysql run in the same userspace, but within a container. It would be more complex trying to only add the arg if it's non-default. Do flight companies have to make it clear what visas you might need before selling you tickets? Why the following error appears when using rm -rf * in my current location? How does a fan in a turbofan engine suck air in? This changed in version 2.34. This flag cannot be specified with either Connect and share knowledge within a single location that is structured and easy to search. Side note: I get it. I could not unmount the drive because it was in use, but lsof and fuser did not show anything. I also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive. Yeah, you can't unmount something not mounted as it should error out. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. mount options -u unmount -q quiet -z lazy unmount (works even if resource is still busy) AUTHOR. 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. The best answers are voted up and rise to the top, Not the answer you're looking for?
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fusermount: failed to unmount device or resource busy 2023