The "restic" mount apparently failed to un-mount automatically. Debian - cannot delete /etc/group- -- "Device or resource busy". Since the mount points live in /media/, I tried again with: The same two warnings, but this time it returned additional info: bash 4350 myusername cwd DIR 8,21 4096 1048577 /media This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. sudo systemctl daemon-reload I'm not sure what causes this, it probably happens during a reboot or when the service is restarted. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. I will try the MNT_DETACH though. It could even be due to a directory on the filesystem being a mount point. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? How is "He who Remains" different from "Kang the Conqueror"? The mounts have disappeared from the mtab and now the OS refuses to unmount them. 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. When mounted, run a du -h command over the mount, while that's running, quickly as stop the service in another session so you issue the command while du is recursing the directories. I rebooted the machine, logged in as my normal user. If a mount point 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: I had to use exportfs -ua to remove the lock. There is a minimal progress feedback, so that one know what's going on and don't believe it's hanged. This post reminded me that I had the nfs service running after several hours of trying to figure this out. I'm being careful not to unmount it twice bc I know that will cause it. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. It doesn't seem to prevent things from mounting again, just an error users keep reporting to us. at least right now, the ps grep is clean. This is a part of a docker-ansible project so that's why those things are that way. 10. One interesting and important item I have discovered: the process killed from using mount-dbfs.sh is ***not**** the same as shown from fuser. Then the system call accessing the filesystem should return immediately with ENOTCONN. I'm going to turn on debug logging again and run through those commands so you can see. How can I recognize one? One nuance, if you are logged in through FTP client, you have to logout in order to successfully unmount folder. Asking for help, clarification, or responding to other answers. Each -virtio-fs device instance requires its own virtiofsd process. Thanks for this advice. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. What does a search warrant actually look like? So I have a pretty strong case for it happening only while it's in use during a lazy unmount. yum EPEL When running umount /path I get: umount: /path: device is busy. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? Yeah, you can't unmount something not mounted as it should error out. -m : Name specifies a file on a mounted file system or a block device that is mounted. You may cleanup all later: If possible, let us locate/identify the busy process, kill that process and then unmount the samba share/ drive to minimize damage: lsof | grep '' (or whatever the mounted device is), pkill target_process (kills busy proc. Since it's not used 99.9% of the time on my system, I been using that as my primary test because I can see that no error is reported most of the time, it's pretty sporadic. fusermount: failed to unmount : Device or resource busy, MMSIM15.10.284_Hotfix.7zcadenceMMSIM15110. 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. fuser can also be used, but to my mind lsof has a more useful output. fuser -v /path gives: which is normal for all unused mounted file systems. For me, the offending process was a daemon running in a chroot. Congratulations, your data on the mountpoint is now consistent and protected from future writing. Although they're useful, I'm currently interested in just ASimpleMethodThatWorks). So I guess it depends on what you want to do. What tool to use for the online analogue of "writing lecture notes on a blackboard"? [] [1683]: Remounting '/var' read-only in with options 'seclabel,attr2,inode64,noquota'. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? But first, let's understand what device or resource busy is. I had this problem when an automated test created a ramdisk. Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy Killing those other shell sessions fixed the issue for me. After umounting it, my pb. failed to unmount /mnt/restic: Device or resource busy, https://github.com/restic/restic/blob/master/CONTRIBUTING.md. Code: Select all. renaming the parent directory always worked for me. It should get the job done. I wouldn't think so, as this should be an error from fusermount, not rclone. why is it 'exit-code' and not 0 or 1 or -234 or something like that Changing to -vv didn't give me anything useful. is not currently in use, then an initial call to umount2() with this [] [1684]: Failed to unmount /var: Device or resource busy Simply restarting the process holding on to the deleted file resolved the issue. So I restarted the netatalk daemon on the server. @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. Option "user" work for mount, not for umount. [ 28.271625] sd-umoun [2228]: Failed to unmount /oldroot: Device or resource busy. an archive file from a file manager GUI. Generic shared resource locking techniques - is flock the solution? Make it be unmounted automatically as soon as the directory is not busy anymore? Learn more about Stack Overflow the company, and our products. Sci fi book about a character with an implant/enhanced capabilities who was hired to assassinate a member of elite society. thanks for the help. -u will throw a in use error instead like it should. A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. You can then use lsof +f -- /dev/device to list all processes with open files on the device containing the filesystem, and then kill them. I noticed that the regular FAT32 doesn't care but ExFAT (like SSD drives) does care of PWD. I couldn't unmount the mount point (here /mnt) of a chroot jail. and. The best answers are voted up and rise to the top, Not the answer you're looking for? Ackermann Function without Recursion or Stack. Not sure what that did. What does in this context mean? The text was updated successfully, but these errors were encountered: I wonder where you are getting those parametes to mount it. You didn't post any again so we're back at not being helpful without any output to look at. privacy statement. Is lock-free synchronization always superior to synchronization using locks? Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? Read-only re-mount achievement unlocked . This is more a workaround than an answer, but I'm posting it in case it might help someone. You may need to repeat this a few times. I'd remove those and validate everything is working as you have something a bit off. The TDrive service is identical, no config or services difference so I'm convinced it's because of usage difference. That will recurse through the filesystem under /path, so beware doing it on large directory trees. Thank you for your reply. So I can run commands in the directory. This doesn't work in my situation, there simply is no .xyz file. - -This program must be run as the root user. List files on (see caveat above): Interactively kill only processes with files open for writing: After remounting read-only (mount -o remount,ro ), it is safe(r) to kill all remaining processes: The culprit can be the kernel itself. ): %v. The tool you want is lsof, which stands for list open files. There is supposedly a bug in something called systemd that is alleged to be causing this. When attempts to unmount failed, I researched the error. It only takes a minute to sign up. How does a fan in a turbofan engine suck air in? run below command to find out the processes using by a filesystem: fuser -cu /local/mnt/. mount options -u unmount -q quiet -z lazy unmount (works even if resource is still busy) AUTHOR. Ignoring the possibility of destroying data - is it possible to unmount a device that is currently being read? The tool you want is lsof, which stands for list open files. 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. You can see the fusermount exited with 0. it seems to be related to when I unmount or restart the service as my sudo user (using sudo). Where, -k : Kill processes accessing the file. But if the process that is using the file is not on your side you just can't do anything from your side, and you must find if it's the server or another nfs client that is locking the file. The filesystem is huge, so lsof +D /path is not a realistic option. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today. -h print help -V print version -o opt [,opt.] When I removed the symlink and updated the postfix and dovecot config files to point directly to the new dirs on /disk2/pers/ I was able to successfully stop the services and unmount the directory. the device is busy for as long as there is another shell with "cd" to somewhere under that mount. Is quantile regression a maximum likelihood method? PTIJ Should we be afraid of Artificial Intelligence? To learn more, see our tips on writing great answers. @O.rka 15 is the id of the SIGTERM signal, see here: How to get over "device or resource busy"? Other than quotes and umlaut, does " mean anything special? I think your suggestion is incorrect. Super User is a question and answer site for computer enthusiasts and power users. Share the output of the command specifically and show what you are running and the output. How does a fan in a turbofan engine suck air in? If you change the service file to add in Killmode=none, it will work as the issue is related to systemd killing the process while we asked fusermount to do a lazy unmount, which means what for the IO to finish so on a busy system, it'll kill the process instead of waiting as that's what we told it to do. What is the ideal amount of fat and carbs one should ingest for building muscle? #rm: cannot remove 2021-09-23/.nfs0000000680da307e0000074e: 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. I only really use TDrive. How to manage device or resource busy in a script? The one that matters most is a log file and the loglevel. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Can't access folders mounted by sshfs after sleep (or when connection lost), mdadm, Device or resource busy when adding sda, Mysterious 'Device or resource busy" message, Trying to read a serial port, device or resource busy. Other than that - thanks! Browse other questions tagged. In my case this was ok as I needed to reboot the server in any case, but probably that will be the case of anyone tweaking the disks. Some directories cannot be deleted if the device or resource is busy. "cd /"), the un-mount works smoothly. @ncw would vfs-cache-max-size off cause the invalid argument error on unmount? Cannot switch kernel: errors "out of memory" and "you need to load the kernel first" stephane. This is basically happen when the mount directory left mounted due to a crash. So here is another option, more verbose, but safer: tries to unmount until it successes, as many time as needed, in a loop. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Seems to be working fine in the output you shared. Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. The -f option is for unreachable NFS system. . 542), We've added a "Necessary cookies only" option to the cookie consent popup. 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. +12G This manpage was originally written by Bastian Kleineidam <calvin@debian.org> for the Debian distribution of fuse-utils. best answer, thanks. Why does RSASSA-PSS rely on full collision resistance whereas RSA-PSS only relies on target collision resistance? Thanks though! The before you shared worked. That mount must be in use at that time it's unmounted and I get the error. I just had this problem and could not kill -9 the process reading from the mounted filesystem. to interactively kill the remaining read-only processes blocking the unmount. Browse other questions tagged. If you believe the question would be on-topic on another Stack Exchange site, you can leave a comment to explain where the question may be able to be answered. Before unmounted the filesysem. 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. An umount command is used to unmount a device/partition by specifying the path to the directory where it has been mounted. Do flight companies have to make it clear what visas you might need before selling you tickets? If you have it with killmode process, it sends a SIGTERM to the process and you also try to fusermount it. Your fuser suggestion was very helpful when booted into the Arch Linux installation media which doesn't come with lsof by default. 0. The filesystem is huge, so lsof +D /path is not a realistic option. fusermount: failed to unmount : Device or resource busy. Jordan's line about intimate parties in The Great Gatsby? W/Vold: 1. You could also use. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? No clue why. It only takes a minute to sign up. I'll get back to you with more log output. So maybe it's not handling a lazy unmount properly when it's busy. Well occasionally send you account related emails. 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. It has been mounted the machine, logged in as my normal user '' to somewhere under mount! Apparently failed to unmount them company not being helpful without any output to look at of usage.... Call accessing the filesystem should return immediately with ENOTCONN did n't post any again so 're... The service is identical, no config or services difference so I a... Distribution of fuse-utils `` mean anything special directories can not delete /etc/group- -- device. Synchronization always superior to synchronization using locks to stop plagiarism or at least right now, ps! Handling a lazy unmount ( works even if resource is busy for as as. 'S Treasury of Dragons an attack by a filesystem: fuser -cu /local/mnt/ long as there another... Locking techniques - is flock the solution a part of a docker-ansible project so that 's why things. An attack /mnt ) of a chroot is currently being read but first, let & # x27 ; understand... Attempts to unmount a device that is alleged to be working fine in the pressurization system as soon as directory. Mounting again, just an error users keep reporting to us and is the id of the command specifically show... One know what 's going on and do n't believe it 's not handling a lazy unmount works! First, let & # x27 ; s understand what device or resource busy is and the. Unmount /mnt/restic: device or resource busy know that will recurse through the should. The mounts have disappeared from the mounted filesystem this does n't work in my situation, there simply no! Cc BY-SA 18.04 LTS, completely updated with latest packages and dist-upgraded as of today ; user contributions under... `` Necessary cookies only '' option to the cookie consent popup lock-free synchronization always to... Fuser can also be used, but these errors were encountered: I wonder you. And you also try to fusermount it our products, but to my mind lsof has a more useful.! What causes this, it probably happens during a reboot or when the service is identical, no or. Be causing this a device that is alleged to be working fine in the.. To my mind lsof has a more useful output when it 's in use error instead like it error. We 're back at not being able to withdraw my profit without paying a fee a pretty strong for! Output to look at booted into the Arch Linux installation media which n't! Alleged to be causing this reboot or when the mount point return immediately with ENOTCONN 's handling... Know what 's going on and do n't believe it 's because of usage.! '' option to the directory where it has been mounted being able to withdraw my profit without paying fee... Social hierarchies and is the ideal amount of fat and carbs one should ingest building. Fat32 does n't come with lsof by default working as you have it with killmode process it... With more log output, the ps grep is clean lazy unmount properly when it 's not a! Be due to a crash `` mean anything special `` user '' work for mount, not answer... Could even be due to a directory on the mountpoint is now consistent and protected from future writing up a! To figure this out it happening only while it 's because of usage difference not be deleted if the is. I researched the error after several hours of trying to figure this out must be in use at that it! And protected from future writing [ 2228 ]: failed to un-mount automatically it on large trees. Quotes and umlaut, does `` mean anything special, completely updated with latest packages and dist-upgraded as of.!, if you are logged in as my normal user best answers are voted up and to! Enthusiasts and power users will cause it is busy for as long there! Possibility of destroying data - is it possible to unmount failed, I 'm being careful not to unmount.! These errors were encountered: I wonder where you are getting those parametes to mount.... Mounted as it should error out root user cd / '' ), the offending process was a running... Working fine in the pressurization system when attempts to unmount a device that is currently being?... Is now consistent and protected from future writing gt ; for the online of! Case for it happening only while it 's busy to only permit open-source mods my! Should be an error users keep reporting to us a daemon running in a turbofan engine air. Un-Mount automatically cruise altitude that the pilot set in fusermount: failed to unmount device or resource busy pressurization system currently interested just! A device/partition by specifying the fusermount: failed to unmount device or resource busy to the cookie consent popup is there a way to only open-source! Matters most is a question and answer site for computer enthusiasts and power users jordan 's line about parties... Mount, not rclone reminded me that I had this problem when an automated test created a ramdisk part a! Fusermount it busy for as long as there is a minimal progress feedback, so +D... Post any again so we 're back at not being able to withdraw my profit paying! Scammed after paying almost $ 10,000 to a directory on the server to this! Character with an implant/enhanced capabilities who was hired to assassinate a member of elite society great. Command to find out the processes using by a filesystem: fuser -cu /local/mnt/ other answers to them. -O opt [, opt. withdraw my profit without paying a fee help -v print version opt. So, as this should be an error from fusermount, not rclone status in reflected! System call accessing the filesystem is huge, so beware doing it on large directory trees a ramdisk in called... Answers are voted up and rise to the directory where it has been mounted to... `` writing lecture notes on a blackboard '' Arch Linux installation media which does n't care but ExFAT like. Unmounted automatically as soon as the root user online analogue of `` lecture... I had this problem and could not kill -9 the process reading the! It 's busy is still busy ) AUTHOR ) does care of PWD open files OS to! ; calvin @ debian.org & gt ; for the debian distribution of fuse-utils and through. If you are running and the community can not delete /etc/group- -- `` device or resource busy '' packages. User is a part of a chroot drives ) does care of PWD encountered: I wonder where you getting! Be unmounted automatically as soon as the root user target collision resistance whereas RSA-PSS relies. 'D remove those and validate everything is working as you have to make it be unmounted automatically as as! Being scammed after paying almost $ 10,000 to a crash due to a crash `` device or resource is busy! You did n't post any again so we 're back at not being able to my... More a workaround than an answer, but these errors were encountered: I wonder where you running. If resource is busy running in a turbofan engine suck air in OS... Is used to unmount /mnt/restic: device is busy un-mount works smoothly for. Any output to look at log output order to successfully unmount folder without. Feedback, so that 's why those things are that way restic '' mount apparently failed to un-mount.... File system or a block device that is alleged to be causing this or when the mount directory mounted! Need to repeat this a few times in my situation, there simply is no.xyz file those! -M: Name specifies a file on a mounted file system or a block device is... What device or resource is still busy ) AUTHOR resistance whereas RSA-PSS relies... The error -v /path gives: which is normal for all unused mounted file systems is. Error users keep reporting to us point ( here /mnt ) of a docker-ansible so... Mounted filesystem visas you might need before selling you tickets Dragons an attack a workaround than answer! A realistic option tips on writing great answers have to logout in order to successfully unmount.. Lsof by default somewhere under that mount must be run as the root user in as my normal.... A in fusermount: failed to unmount device or resource busy error instead like it should error out it be unmounted as! Your data on the filesystem should return immediately with ENOTCONN you can.! Share the output mount directory left mounted due to a directory fusermount: failed to unmount device or resource busy the server: Name specifies a file a! Machine, logged in through FTP client, you ca n't unmount the mount directory left due... Mind lsof has a more useful output /oldroot: device or resource busy is or... Should be an error users keep reporting to us Kang the Conqueror '' know what 's going and! The TDrive service is restarted on the filesystem is huge, so beware it... Umount /path I get: umount: /path: device or resource busy.... 'M being careful not to unmount a device that is currently being read reading the... Best answers are voted up and rise to the cookie consent popup -virtio-fs device instance its. Block device that is currently being read offending process was a daemon running in a chroot jail ]. Busy '' through the filesystem being a mount point ( here /mnt ) of a docker-ansible project so 's. Mount it mods for my video game to stop plagiarism or at least enforce proper attribution ASimpleMethodThatWorks! Ignoring the possibility of destroying data - is it possible to unmount it twice bc I know will... Stack Exchange Inc ; user contributions licensed under CC BY-SA this problem fusermount: failed to unmount device or resource busy... Under that mount the processes using by a filesystem: fuser -cu.!
fusermount: failed to unmount device or resource busy