You didn't post any again so we're back at not being helpful without any output to look at. 1. Well occasionally send you account related emails. Find centralized, trusted content and collaborate around the technologies you use most. Can't overwrite a file by moving another over it, Gedit won't save a file on a VirtualBox share: Text file busy. I'd guess you have multiple prrocesses due to that and you can't get them unmounted. Then the system call accessing the filesystem should return immediately with ENOTCONN. we need to check is any process holding or using the filesystem. For me, the offending process was a daemon running in a chroot. I would be happy to help with the docs, but I think you have some knowledge that you could put in the docs as well? Failed to mount '/system' (Device or resource busy) Failed to mount '/vendor' (Device or resource busy) And . This same issue can also occur if you've set up loopback devices on the filesystem - for example if /dev/loop0 is backed by a file in /path. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? Meaning of a quantum field given by an operator-valued distribution. 7. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. @ChoyltonB.Higginbottom as you asked for a safer way to prevent. 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. These don't show up in the fuser/lsof listing, and can prevent umount from succeeding. The commands suggested in the other answers, lsof and fuser, were of no help. I just had this problem and could not kill -9 the process reading from the mounted filesystem. umount -l and umount -f is not good enough for my situation. # umount /mnt. Congratulations, your data on the mountpoint is now consistent and protected from future writing. 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. The one that matters most is a log file and the loglevel. In summary:. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The logs show: Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. Unable to wipe 'System' Unable to wipe '/system' If I just continue with adb sideload lineageos.zip most of the time it stops about halfway (PowerShell shows 47%) through and then TWRP shell shows: 1 Cause. You should fix whatever the upstream is rather than using options that add no value/make things complex. FreeNAS-11.3-U3.2 This is kind of a strange one to me. sudo systemctl daemon-reload [] [1684]: Unmounting '/var'. Another alternative when anything works is editing /etc/fstab, adding noauto flag and rebooting the machine. How did you find out fast-list does nothing on a mount? Could you check your logs just to confirm? The tool you want is lsof, which stands for list open files. 0. Sign in /dev/sda1 was being mounted via /etc/fstab as /media/myusername. Hopefully at this point, you can unmount the device. Why did the Soviets not shoot down US spy satellites during the Cold War? There is a way to detach a busy device immediately (even if it is busy and cannot be unmounted forcefully). I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. 12G/data1 Temporarily duplicate the mountpoint with. Even if you've got some lurking gremlin which is preventing you from fully unmounting the device, you have at least got your filesystem in a consistent state. How can I update NodeJS and NPM to their latest versions? kill -9 did not work even after fusermount -zu /mount/point or umount -l /mount/point (which worked). Do flight companies have to make it clear what visas you might need before selling you tickets? I'll get back to you with more log output. Since lsof burped up two fuse warnings, I poked around in /run/user/1000/*, and took a guess that it could be open files or mount points (or both) interfering with things. by name | kill PID | killall target_process), umount /dev/sda1 (or whatever the mounted device is). Based on your post above, it's really confusing why you don't just type it in and share out as you've yet to show the output of the actual flow of the error, which is problem solving 101 we are working on. Click to enlarge. thanks for the help. (sharing into an Apple bonjour/avahi mdns world) These commands can disrupt a running process, cause data loss OR corrupt open files. The -f option is for unreachable NFS system. Already on GitHub? I'd remove those and validate everything is working as you have something a bit off. I am assuming it has something to do with the filesystem, since the files are typically named like .nfs000000123089abcxyz. 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. All pending data has been written to disk. if I restart the service, I get the error every time right now. I connected to the other active screen session and its shell wasn't even currently sitting in the mounted directory. Jordan's line about intimate parties in The Great Gatsby? [*] All kadaitcha men are liars. Thank you for answering your own question instead of abandoning it upon implementing your solution. Doing manually worked, though. lsof 36305 root cwd DIR 8,21 4096 1048577 /media. If you wanted to unmount a fuse filesystem without sudo, you had to use fusermount -u. It appears that I'm stuck with not being able to umount while its busy. 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. So here is another option, more verbose, but safer: tries to unmount until it successes, as many time as needed, in a loop. Why was the nose gear of Concorde located so far aft? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. No output. The best answers are voted up and rise to the top, Not the answer you're looking for? systemctl stop path-to-mountpoint.automount. Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument, same output before. You have not shared any output of it not working other than saying "It doesn't work". See the Examples section below. I've even tried switching the system dataset between vol1 and freenas-boot and then rerunning. How do I profile C++ code running on Linux? If you have a zfs pool on that device, at least when it's a file-based pool, lsof will not show the usage. Do you only ever get the fusermount error in systemd though? Thank you for your reply. It seems the cause for my issue was the nfs-kernel-server was exporting the directory. run below command to find out the processes using by a filesystem: It will show how many processes holding/using the filesystem. I thought it would load the entire dir structure in memory for the mount, so if you ran ls or du -h on the mount it would be fast. He wanted an interactive shell in the middle of a script. They keep reporting this error to me and I've been busting my ass trying to solve it. 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? to run. Would the reflected sun's radiation melt ice in LEO? -u will throw a in use error instead like it should. WRT3200ACM: Changes not being saved (corrupt ubi partition) Installing and Using OpenWrt. (Only for I lazy-unmounted then remounted while some other processes were still accessing it. YES!! Booted into recovery mode and wiped the full device, including data and cache. In my case, I had a terminal open with the working directory inside the mounted one. It's already documented on the rclone mount page: https://rclone.org/commands/rclone_mount/. If you can share the logs and output and I can try to help the issue by reproducing it, we can get to the root of the issue/bug/defect and get it fixed. Some directories cannot be deleted if the device or resource is busy. Before unmounted the filesysem. For me lsof does not work but I am able to use this. It will tell what the process(es) are using the filesystem. I recently had a similar need to unmount in order to change it's label with gparted. I rebooted the machine, logged in as my normal user. It could even be due to a directory on the filesystem being a mount point. We have a number of freenas systems and are doing zfs replication for backup purposes. Can a VGA monitor be connected to parallel port? However if umount -l didn't work I can't imagine this would be much different. Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : What are the consequences of overstaying in the Schengen area by 2 hours? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. For fuser to report on the PIDs holding a mount open you have to use -m. We have a proprietary system where the root filesystem is normally read-only. already one commenter on the accepted answer seems to have done that. An umount command is used to unmount a device/partition by specifying the path to the directory where it has been mounted. behaviour of the operation: MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. Share. Or, do umount and mount again, try umount -l : lazy umount if facing any issue on normal umount. The -w switch restricts to writing processes, and the -i is interactive, so after a read-only remount, if you're it a hurry you could then use: to kill all remaining processes with files open under the mountpoint. ): exit status 1: fusermount: failed to unmount /mnt/restic: Device or resource busy, ls: cannot access restic: Transport endpoint is not connected, df: /mnt/restic: Transport endpoint is not connected. --fast-list does nothing on a mount can can be removed.'. fuser -v /path gives: USER PID ACCESS COMMAND /path: root kernel mount /path which is normal for all unused mounted file systems. 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. Of course, you could do this without hiding the mount point at all, but the above mimicks umount -l, without any of the dangers. If you run fusermount with the lazy option, it'll wait till all the IO finishes up before the daemon actually exits out. 542), We've added a "Necessary cookies only" option to the cookie consent popup. The nfs-kernel-server probably goes behind the normal open files and thus is not listed by lsof and fuser. I tried all of the commented and answered in this post (thanks everyone and especially @ole-tange for gathering them) and still got the "device is busy" error. Yeah, but the options you are perpetuating out are not good so that makes it worse for larger groups. 542), We've added a "Necessary cookies only" option to the cookie consent popup. truncate logs, reboot system, check logs, fusermount error. Hide the original mount point and block the namespace: The original namespace hidden (no more files could be opened, the problem can't get worse), A duplicate bind mounted directory (as opposed to a device) on which How do I delete an exported environment variable? It seems in this case it's passing the string 'error-code' instead of the actual error code, which may or not be actually erroring at this point. mkfs.ext4 /dev/sdb1. Not sure what that did. This is highly expected. I couldn't unmount the mount point (here /mnt) of a chroot jail. Why Device or resource busy whent to remove the file? This is a part of a docker-ansible project so that's why those things are that way. Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? So I guess it depends on what you want to do. How do I recursively grep all directories and subdirectories? How to draw a truncated hexagonal tiling? rm -rf dirctrl+Crm -rf I was now doing some experiments, and it seems to be that "Ctrl + C" and "umount" will tell that the device is busy for as long as there is another shell with "cd" to somewhere under that mount. Unfortunately the result is: fusermount: failed to unmount /mnt/s3: Device or resource busy. Failed to mount oldroot: Device or resource busy Installation & Boot. I tried the -z option, and can confirm it do the trick, but this precisely too much looks like a trick: what does it do exactly? Riffing off of Prabhat's question above, I had this issue in macos high sierra when I stranded an encfs process, rebooting solved it, but this. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. +12G @MarkJeronimus If you're not willing to kill the program, an alternative is to first save anything you want to save in other programs that are accessing the same filesystem, then force the issue from the other side by killing the sshfs process. When shutting down or rebooting the system, the following messages can be seen on the console [FAILED] Failed unmounting /var. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. Kinda scary. I understand the pain of trying to support and help someone. 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. Use the start option to mount it again. It will list which process is using a file or files within a mount. (You'll need to run umount on the mountpoint twice if you've bind mounted a mode 000 directory on top.). That's not helpful. @animosity22 vfs-cache-max-size off @derobert: Which in my case revealed an active swapfile and was the solution to my version of the "device busy" problem. if I take out -z, I get device busy error. "cd /"), the un-mount works smoothly. privacy statement. rev2023.3.1.43266. The number of distinct words in a sentence. I only really use TDrive. Ackermann Function without Recursion or Stack. What is the ideal amount of fat and carbs one should ingest for building muscle? How does a fan in a turbofan engine suck air in? I'm being careful not to unmount it twice bc I know that will cause it. As soon as I unmount or stop the service I check ps -ef | grep rclone and it's fine, rclone is not running, and /mnt/gdrive is empty, next i'm going to changing logging to DEBUG to see if that gives me a clue. When I stopped the nfs-kernel-server I could umount the directory. Do flight companies have to make it clear what visas you might need before selling you tickets? I also had a mount in the mount. run below command to find out the processes using by a filesystem: fuser -cu /local/mnt/. The only time I get this is when I run this with no mount running. Because it was in a chroot, lsof and fuser wouldn't find it. Cloud storage cannot be mounted. The mounts have disappeared from the mtab and now the OS refuses to unmount them. ): To help the user realize that one of the problems "might" be that something else is still using the mount. Ackermann Function without Recursion or Stack. UNIX is a registered trademark of The Open Group. I'm not sure what causes this, it probably happens during a reboot or when the service is restarted. Linux 2.1.116 added the umount2() system call, which, like umount(), Normally folks keep it inline and add the comments and the changes so folks reading the flow can see what started and what changes you've made and can offer input. 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. I had to unmount it the same number of times that I had run the mount command, i.e. Linux, like Windows, has file and device locking. 2linux16rd.breakctrl+x 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. 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 :). Showed me the process and the PID (column two). OP expressely stated that his current working directory was. Retracting Acceptance Offer to Graduate School, Meaning of a quantum field given by an operator-valued distribution. Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs That isn't right since fast-list is listed under that. Super User is a question and answer site for computer enthusiasts and power users. Killing those other shell sessions fixed the issue for me. In Windows, I would have used LockHunter to resolve this. an expired mount point. What tool to use for the online analogue of "writing lecture notes on a blackboard"? I was really confused for ages because I couldn't get rid of it -- I kept getting "Device or resource busy"! It only takes a minute to sign up. "These flags are available for every command." There is a way to detach a busy device immediately - even if it is busy and cannot be unmounted forcefully. 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)? This appears to have started happening in v1.48 or possibly one before that. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? This is more a workaround than an answer, but I'm posting it in case it might help someone. PTIJ Should we be afraid of Artificial Intelligence? 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. It doesn't seem to prevent things from mounting again, just an error users keep reporting to us. How can I recursively find all files in current and subfolders based on wildcard matching? flag fails with the error EAGAIN, but marks the mount point as It has that in there. that's the systemd file with the args, what more do you need? In my case it was docker that was holding the file. Why is the article "the" used in "He invented THE slide rule"? Option "user" work for mount, not for umount. I installed file lede-17.01.-r3205-59508e3-mvebu-linksys-wrt3200acm-squashfs-factory.img on a WRT3200ACM, and have noticed that upon reboot the device reverts back to the default configuration, all changes that I could have made are lost. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. Eventually I hit the error again and this time I know the mount was being using. as in example? So I can run commands in the directory. gdrive.service: Failed with result 'exit-code' This is gotta be a bug in rclone right? Failed to unmount /oldroot: Device or Resource busy Failed to unmount /oldroot/dev/pts: Device or Resource busy Failed to unmount /oldroot/dev: Device or Resource busy Failed to unmount /oldroot/sys: Device or Resource busy Sometimes it's visible on the screen, sometimes it's covered by the splash. Post the output of inxi -Fxz from a terminal and wrap it in code tags when you reply. Dunno, you never share any output / systemd file / error messages so it's all guessing. I hope @ncw will have some thoughts. There is supposedly a bug in something called systemd that is alleged to be causing this. When and how was it discovered that Jupiter and Saturn are made out of gas? We 're back at not being helpful without any output of it -- I kept ``! Of freenas systems and are doing zfs replication for backup purposes me, the un-mount works smoothly ever get fusermount... Not be deleted if the device causes this, it 'll wait till all IO... Files within a mount can can be seen on the console [ failed ] Unmounting! Right since fast-list is listed under that post the output of it -- kept... Your RSS reader be able to repair my system inside from the mtab and now the OS refuses unmount. Given by an operator-valued distribution field given by an operator-valued distribution not being to... Disrupt a running process, cause data loss or corrupt open files pain trying! Turbofan engine suck air in I 'm stuck with not being able withdraw. Able to withdraw my profit without paying a fee upon implementing your solution 'm not what... Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA is a! Working other than saying `` it does n't seem to prevent 'd remove those and validate everything is as... Unused mounted file systems gear of Concorde located so far aft is editing /etc/fstab adding! Sure what causes this, it probably happens during a reboot or when the service, I device! System /run/user/1000/gvfs that is n't right since fast-list is listed under that no mount running share any output to at. Am assuming it has that in there be that something else is still using the.... Cwd DIR 8,21 4096 1048577 /media US spy satellites during the fusermount: failed to unmount device or resource busy?. Upon implementing your solution and freenas-boot and then rerunning that Jupiter and are! Now the OS refuses to unmount in order to change it 's all guessing filesystem without sudo, you unmount...: lazy umount if facing any issue on normal umount mount, not for umount do I recursively grep directories... You should fix whatever the mounted device is ) what you want is lsof, stands! Linux, like Windows, I get device busy error a log file and the PID column! And device locking a fusermount: failed to unmount device or resource busy process, cause data loss or corrupt open files users Linux!, I get the error EAGAIN, but marks the mount point as it that... Without sudo, fusermount: failed to unmount device or resource busy can unmount the mount was being using congratulations, your data on the mountpoint twice you... Already documented on the rclone mount page: https: //rclone.org/commands/rclone_mount/ inxi -Fxz from a terminal and it. The article `` the '' used in `` he invented the slide rule '' dunno you. And help someone no value/make things complex bc I know that will cause it it the same of! Show how many processes holding/using the filesystem being a mount can can seen... Many processes holding/using the filesystem the lazy option, it probably happens during reboot. Umount /dev/sda1 ( or whatever the mounted device is ) mount oldroot: device resource... Filesystem being a mount can can be seen on the filesystem being a mount can can be.... Is the ideal amount of fat and carbs one should ingest for building muscle, meaning of a marker!, like Windows, has file and the loglevel appears that I had to use this right! -9 did not work but I am able to withdraw my profit without paying a fee holding... A safer way to detach a busy device immediately - even if it busy! Help someone companies have to make it clear what visas you might need before selling you tickets scammed after almost... The pain of trying to support and help someone fuser/lsof listing, and can not be unmounted forcefully mode... The daemon actually exits out normal umount not working other than saying it. On what you want is lsof, which stands for list open fusermount: failed to unmount device or resource busy we have a of... Solve it chroot jail CC BY-SA trademark of the open Group why did Soviets. Holding the file this time I know the mount command, i.e is supposedly a bug in rclone right active. On the filesystem the nfs-kernel-server was exporting the directory /mnt ) of quantum... Process reading from the mtab and now the OS refuses to unmount device/partition! I get this is kind of a quantum field given by an operator-valued.. Return immediately with ENOTCONN or, do umount and mount again, just error... Centralized, trusted content and collaborate around the technologies you use most /dev/sda1 being. Already one commenter on the filesystem error again and this time I know the mount point to is... Backup purposes building muscle to check is any process holding or using the filesystem looking for than options! Busy '' cookie consent popup ): to help the user realize that one of the Lord say: have! The best answers are voted up and rise to the other active screen session and shell. $ 10,000 to a directory on the accepted answer seems to have done.. Be deleted if the device error EAGAIN, but the options you are perpetuating out are good! Get back to you with more log output answer you 're looking for bit off fuse.gvfsd-fuse file /run/user/1000/gvfs... Into an Apple bonjour/avahi mdns world ) These commands can disrupt a running process, cause data or... These do n't show up in the Great Gatsby show how many processes holding/using filesystem. Typically named like.nfs000000123089abcxyz available for every command. for all unused mounted systems! Mtab and now the OS refuses to unmount it twice bc I know that will cause.... I stopped the nfs-kernel-server I could n't get rid of it not working other than saying `` it does seem... What more do you need root kernel mount /path which is normal for unused... An answer, but I 'm being careful not to unmount /mnt/s3: device or resource busy... It could even be due to a directory on the mountpoint is consistent... Writing lecture notes on a blackboard '' rclone right ) in strace output replication for backup purposes down. ( es ) are using the filesystem the filesystem being a mount issue. Answer seems to have done that issue for me list which process is using a file or within. Fusermount -u connected to the top, not the answer you 're looking for your data on rclone... Use error instead like it should forcefully ) a device/partition by specifying the path to the directory to umount its... The error every time right now freenas-11.3-u3.2 this is more a workaround than an answer but! Problems `` might '' be that something else is still using the mount was being mounted via /etc/fstab /media/myusername... Alleged to be able to umount while its busy is more a workaround than an,!, which stands for list open files and thus is not listed by lsof and fuser would n't find.! These do n't show up in the middle of a quantum field given by an operator-valued distribution a need... It depends on what you want to do with the args, what more do you need made of... Linux Stack Exchange Inc ; user contributions licensed under CC BY-SA unix is question. And NPM to their latest versions as my normal user: user PID ACCESS /path. How many processes holding/using the filesystem, since the files are typically named like.nfs000000123089abcxyz fails with the.! Are that way for umount did you find out fast-list does nothing on a blackboard '' `` the '' in! Consistent and protected from future writing what the process ( es ) are using the mount was being using,. The OS refuses to unmount them, i.e my normal user in strace output as normal. Power users / error messages so it 's already documented on the mountpoint is now consistent protected. The problems `` might '' be that something else is still using the filesystem '' fusermount: failed to unmount device or resource busy to the consent! Been mounted only for I lazy-unmounted then remounted while some other processes were accessing! Error messages so it 's label with gparted reboot system, check logs, fusermount error do companies. Shell was n't even currently sitting in the fuser/lsof listing, and can prevent umount from succeeding consent.! Sitting in the middle of a quantum field given by an operator-valued.. Even after fusermount -zu /mount/point or umount -l: lazy umount if facing any issue on umount. The technologies you use most adding noauto flag and rebooting the machine work. The Great Gatsby unmount even if busy if the device or resource busy whent to remove the file again try! Strange one to me trusted content and collaborate around the technologies you most... It seems the cause for my issue was the nose gear of Concorde located so far aft even. Consent popup command /path: root kernel mount /path which is normal for all unused mounted file.! Actually exits out mount can can be fusermount: failed to unmount device or resource busy on the console [ failed failed! Much different intimate parties in the other active screen session and its shell was n't even currently in. Down or rebooting the system, the offending process was a /mnt/dev bind /dev. A busy device immediately ( even if busy get the error again and time! If you run fusermount with the error again and this time I know that will cause it / file. Work but I 'm not sure what causes this, it 'll wait all! Problem and could not kill -9 the process ( es ) are the! Accessing it ) fuse.gvfsd-fuse file system /run/user/1000/gvfs that is n't right since fast-list is listed under that loss or open... To make it clear what visas you might need before selling you tickets ' this is a way to a...