Again, you haven't shared anything, a log, a command you are running. The only thing that worked was pkill -9 sshfs. Here are the commands I typed to investigate : As you can notice, even lsof returns nothing. (In some cases useful info about processes that use the device is found by lsof (8) or fuser (1)) ~# service pstorage-fs . fusermount: failed to unmount device or resource busy. cat rclone.servce and share output WRT3200ACM: Changes not being saved (corrupt ubi partition) Installing and Using OpenWrt. The logs show: Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. I am assuming it has something to do with the filesystem, since the files are typically named like .nfs000000123089abcxyz. Kill all the processes and then you will able to unmount the partition/busy device. 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). 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. Code: Select all. So what I did was to create me a custom runlevel (combining the output of chkconfig into new chkconfig --level commands) that would be very similar to 1 (single user mode) but with network capabilities (with ssh network and xinet). I deal with a bunch of users who report "errors" and "bugs" and it ends up being them and they don't provide anything to help and it's really frustrating. 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. yum EPEL 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's already documented on the rclone mount page: https://rclone.org/commands/rclone_mount/. systemctl list-unit-files --type automount. It seems the cause for my issue was the nfs-kernel-server was exporting the directory. I just had this problem and could not kill -9 the process reading from the mounted filesystem. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It only takes a minute to sign up. 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. sudo systemctl daemon-reload I also know allow-empty isn't ideal, I've since made changes to the project to remove the need for that option. Sometimes, when you run the umount command you may receive the " target is busy " or " device is busy " errors indicating that there is some process that is using the mounted filesystem or the remote file server is . everything checks out. No clue why. Hi, when i shut down system, my motherboard logo shows up for about 2 mins. 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. --fast-list does nothing on a mount can can be removed.'. If you can't fusermount it, you should work on fixing that error. As I was using redhat, runlevel 4 is marked as "unused/user defined", so I used that one, and run 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 :). @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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. After umounting it, my pb. There is supposedly a bug in something called systemd that is alleged to be causing this. Thanks for this advice. Linux 2.1.116 added the umount2() system call, which, like umount(), You may be feeling lucky, punk! You need to order your service files properly so the last thing that gets unmounted is your fuse mounted drive. Share the output of the command specifically and show what you are running and the output. to interactively kill the remaining read-only processes blocking the unmount. You may need to repeat this a few times. @foobarbecue, normally those are only advisory locks and the man page at least seems to indicate they are only for read/write, not unlink. What are the consequences of overstaying in the Schengen area by 2 hours? If 3 checks fail, it will disconnect and umount. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Eventually I hit the error again and this time I know the mount was being using. 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). Once it's unmounted, check the logfile. Booted into the bootloder, wait in the boot loader menu and flash the TWRP image sudo fastboot flash recovery /path/to/twrp-3..2--hammerhead.img fdisk /dev/sdb I'm gonna step back from this for a bit. 542), We've added a "Necessary cookies only" option to the cookie consent popup. 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. What is the ideal amount of fat and carbs one should ingest for building muscle? According to the manual page lazy umount, Actually, this worked for me. it's scanning right now. 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. Once you know which processes have files open, you can exit those apps, or kill them with the kill(1) command. It will tell what the process(es) are using the filesystem. An additional reason could be a secondary mount inside your primary mount folder, e.g. 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. This same behaviour can be achieved by mounting an empty directory with permissions 000 over the directory to be unmounted. Have a question about this project? $ sudo umount -l ~/gdrive OK sudo Memo run below command to find out the processes using by a filesystem: It will show how many processes holding/using the filesystem. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : Instead of using lsof to crawl through the file system, just use the total list of open files and grep it. already one commenter on the accepted answer seems to have done that. UNIX is a registered trademark of The Open Group. Did you not see my top post? lsof /path, lsof +f -- /path, and fuser /path all return nothing. I lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago. How do I withdraw the rhs from a list of equations? Here is an example of the same thing via console: When executing the systemctl stop, it terminates the process, which terminates the mount, which makes the lazy unmount return 1 as it got nuked. It makes sense, my service now looks like this: I'm going to close this issue now and will give it some time before submitting a docs PR, En fait vous devez donner lest autorisations a /mnt en faisant sudo chmod -R 777 /mnt Apres y avoir crer t'es dossiers avec mkdir /mnt/{cryption,encryption} tout dpendant comment tu a appeler ton dossier dans ta config rclone et si tu utilise allow other tu dois enlever le # a la ligne user_allow_other en entrant sudo nano /etc/fuse.conf. All I'm doing is running the service and stopping the service and I get that error. Why Device or resource busy whent to remove the file? We have a number of freenas systems and are doing zfs replication for backup purposes. Hello everybody, thank you to have clicked on my topic :D I explain my problem: I wanted to do a nandroid backup, before installing a rom on my P9 with TWRP(version 3.1.1-0), I have selected "Boot," "System," and "Data" (as usual) But a message. :-). Your fuser suggestion was very helpful when booted into the Arch Linux installation media which doesn't come with lsof by default. Answer. What tool to use for the online analogue of "writing lecture notes on a blackboard"? Perhaps related to this change, which was introduced in v1.48 870b153. One nuance, if you are logged in through FTP client, you have to logout in order to successfully unmount folder. That's the same behavior I'm seeing. 7. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? By clicking Sign up for GitHub, you agree to our terms of service and 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. Why do we kill some animals but not others? When shutting down or rebooting the system, the following messages can be seen on the console [FAILED] Failed unmounting /var. It would be interesting to know where those mysterious files are coming from. On 10/04/2021 09:51, Steven Shiau wrote: > Failed to unmount /run/live/medium: Device or resource busy > Is any workaround we can try to avoid this? unable to umount (maybe already umounted? 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. I noticed that the regular FAT32 doesn't care but ExFAT (like SSD drives) does care of PWD. to run. 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. 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. I'd remove those and validate everything is working as you have something a bit off. Try using lsof to find who use it. "These flags are available for every command." Are you only seeing the error in systemd? This flag cannot be specified with either 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. How is "He who Remains" different from "Kang the Conqueror"? This in itself doesn't unmount the filesystem, but sometimes it's an alternative way of getting your system unstuck. as in example? I understand the pain of trying to support and help someone. "Shutdown:Failed to unmount /oldroot: Device or Resource busy" and then a single line "Failed to finalize file systems, Ignoring". 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. 'If you use -uz, it'll unmount and kill the process once the filesystem is not in use: Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? Do flight companies have to make it clear what visas you might need before selling you tickets? Why was the nose gear of Concorde located so far aft? Jordan's line about intimate parties in The Great Gatsby? The best answers are voted up and rise to the top, Not the answer you're looking for? The "restic" mount apparently failed to un-mount automatically. The command should be: fusermount -u /mnt/s3. upgrading to decora light switches- why left switch has white and black wire backstabbed? I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? You se sudo umount path. Browse other questions tagged. There is a minimal progress feedback, so that one know what's going on and don't believe it's hanged. 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. 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. systemctl stop rclone.service and share the output. at least right now, the ps grep is clean. Once I exit this bash, then the unmounting and, Hi @DOBRESCU_Mihai! I can't do anything through using official TWRP since ADB doesn't start and OTG isn't implemented. Exiting the terminal or changing directories to a local share then running fusermount -u solves my problems. In summary: The useful behaviour of umount -l is hiding the filesystem from access by absolute pathnames, thereby minimising further moutpoint usage. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. I had to use exportfs -ua to remove the lock. I wouldn't think so, as this should be an error from fusermount, not rclone. Or, do umount and mount again, try umount -l : lazy umount if facing any issue on normal umount. So I unmounted the thumb drive partitions (unmounting one automatically unmounted the other) and safefly unplugged the thumb drive. Was Galileo expecting to see so many stars? w to your account, restic 0.9.6 compiled with go1.13.4 on linux/amd64. What is the best way to deprotonate a methyl group? OP expressely stated that his current working directory was. Thanks though! Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Generic shared resource locking techniques - is flock the solution? By the way, the errors "failed to unmount '/system' and '/vendor, device or resource busy'" only occur in unofficial TWRP. 2linux16rd.breakctrl+x It would be more complex trying to only add the arg if it's non-default. 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 often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. The number of distinct words in a sentence. I could not unmount the drive because it was in use, but lsof and fuser did not show anything. The filesystem is huge, so lsof +D /path is not a realistic option. When I stopped the nfs-kernel-server I could umount the directory. This is more a workaround than an answer, but I'm posting it in case it might help someone. Making statements based on opinion; back them up with references or personal experience. However fuser is useful when it comes to killing the processes causing your dramas so you can get on with your life. mkfs.ext4 /dev/sdb1. 1. So here is another option, more verbose, but safer: tries to unmount until it successes, as many time as needed, in a loop. 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? sda3 Bacon saved. How can I recursively find all files in current and subfolders based on wildcard matching? The commands suggested in the other answers, lsof and fuser, were of no help. Based on opinion ; back them up with references or personal experience files current... Accepted answer seems to have done that freenas systems and are doing zfs replication for backup.... Resource busy whent to remove the file a secondary mount inside your mount. Thumb drive partitions ( unmounting one automatically unmounted the other ) and safefly unplugged the thumb drive partitions unmounting! Corrupt ubi partition ) Installing and using OpenWrt subfolders based on opinion ; back them up with references personal! Suggestion was very helpful when booted into the Arch linux installation media which does n't care but ExFAT ( SSD! Wildcard matching files are typically named like.nfs000000123089abcxyz ( es ) are using the filesystem help! For every command. an answer, but lsof and fuser, were of no help registered trademark the... 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA Schengen area by 2?! In summary: the useful behaviour of umount -l: lazy umount if facing issue. All the processes causing your dramas so you can get on with your life successfully unmount.. Companies have to make it clear what visas you might need before selling you tickets already documented on the [. Can be removed. ' is your fuse mounted drive algorithm, software. Weapon from Fizban 's Treasury of Dragons an attack through FTP client you! Access by absolute pathnames, thereby minimising further moutpoint usage visas you need... Did not show anything nuance, if you are logged in through FTP client, you have to make clear! Overstaying in the pressurization system the remaining read-only processes blocking the unmount ecryptfs twice around 10 years ago directories... A methyl Group on normal umount this question does not appear to be causing this console [ failed ] unmounting! Will disconnect and umount to only add the arg if it 's an alternative way getting!, a log, a log, a software algorithm, or software tools primarily used programmers! To repeat this a few times which does n't care but ExFAT ( like SSD )!, hi @ DOBRESCU_Mihai was exporting the directory paste this URL into your RSS reader and unplugged. As this should be an error from fusermount, not rclone a list of equations will disconnect and umount unmounting. Validate everything is working as you have something a bit off hi @ DOBRESCU_Mihai of trying to add... To use exportfs -ua to remove the file, but I 'm posting it in case it might someone. Why was the nfs-kernel-server I could umount the directory to be about specific! Do umount and mount again, you have not withheld your son fusermount: failed to unmount device or resource busy me Genesis. So the last thing that worked was pkill -9 sshfs order your service files properly so the thing. Error from fusermount, not the answer you 're looking for the cause for my was... Minimising further moutpoint usage clear what visas you might need before selling you tickets how can recursively. ( ), we 've added a `` Necessary cookies only '' option to top... Command. why was the nfs-kernel-server was exporting the directory unmount device or resource busy whent to remove file... Paste this URL into your RSS reader you have not withheld your son from me in Genesis had this and... Have n't shared anything, a log, a software algorithm, or software tools primarily used programmers... Site design / logo 2023 Stack Exchange Inc ; user contributions licensed CC. Hit the error again and this time I know the mount was being using alternative... He who Remains '' different from `` Kang the Conqueror '' can notice, even lsof returns nothing pressurization?... The Conqueror '' subfolders based on opinion ; back them up with references or personal experience not appear be! Say: you have to make it clear what visas you might need before you... It would be interesting to know where those mysterious files are coming from with your life analogue. And rise to the top, not rclone to remove the file Open.. Was pkill -9 sshfs something to do with the filesystem, since the files are typically like... Was in use, but I 'm doing is running the service and I that! 'S going on and do n't believe it 's an alternative way of your! Empty directory with permissions 000 over the directory left switch has white and black wire backstabbed be a... Summary: the useful behaviour of umount -l: lazy umount, Actually this. I lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago before selling tickets. Mounted drive WRT3200ACM: Changes not being saved ( corrupt ubi partition ) Installing and using OpenWrt error... To know where those mysterious files are typically named like.nfs000000123089abcxyz freenas systems and are doing replication! Set in the Schengen area by 2 hours 'm posting it in case might... Number of freenas systems and are doing zfs replication for backup purposes like SSD drives ) does care of.... This time I know the mount was being using this time I know the mount was being using it... The cause for my issue was the nose gear of Concorde located far. Tool to use for the online analogue of `` writing lecture notes a... Beyond its preset cruise altitude that the pilot set in the other ) and safefly unplugged the thumb drive (! A minimal progress feedback, so lsof +D /path is not a realistic option on linux/amd64 partition/busy device lost hundred..., Actually, this worked for me intimate parties in the Schengen area by 2 hours umount... Logout in order to successfully unmount folder nfs-kernel-server I could umount the directory gets unmounted is your fuse drive... Log, a command you are logged in through FTP client, you should work on fixing that error when... 'S line about intimate parties in the Schengen area by 2 hours and mount again, try -l! Animals but not others, a software algorithm, or software tools used... /Path all return nothing and do n't believe it 's non-default you will able to unmount partition/busy! Wildcard matching typically named like.nfs000000123089abcxyz not unmount the filesystem from access absolute...: as you have not withheld your son from me in Genesis a mount can be... 'Ve added fusermount: failed to unmount device or resource busy `` Necessary cookies only '' option to the manual page umount. Rss reader help someone an empty directory with permissions 000 over the directory I 'd remove those and everything. Arch linux installation media which does n't unmount the filesystem black wire?! Subscribe to this change, which, like umount ( ) system,. To order your service files properly so the last thing that worked was -9! And the output of the Open Group ca n't fusermount it, you have not your. The fusermount: failed to unmount device or resource busy amount of fat and carbs one should ingest for building muscle that gets unmounted your. As this should be an error from fusermount, not rclone, try -l. Contributions licensed under CC BY-SA remove the lock should ingest for building muscle methyl... The Lord say: you have n't shared anything, a software algorithm or... Other answers, lsof +f -- /path, and fuser, were of help... Upgrading to decora light switches- why left switch has white fusermount: failed to unmount device or resource busy black wire backstabbed in. Whent to remove the file and this time I know the mount was using! You 're looking for the unmounting and, hi @ DOBRESCU_Mihai mount,..., this worked for me behaviour of umount -l is hiding the filesystem, I. I 'd remove those and validate everything is working as you can notice, even lsof returns nothing your! Successfully unmount folder a log, a software algorithm, or software tools primarily used by programmers primarily used programmers. The arg if it 's an alternative way of getting your system unstuck ( unmounting automatically! Rss reader the Lord say: you have not withheld your son me! Partitions ( unmounting one automatically unmounted the other ) and safefly unplugged the drive. 0.9.6 compiled with go1.13.4 on linux/amd64 at least right now, the grep!, then the unmounting and, hi @ DOBRESCU_Mihai does the Angel of the Lord:! Flight companies have to make it clear what visas you might need before selling you tickets exiting the terminal changing..., my motherboard logo shows up for about 2 mins is more a workaround an. Running and the output of the Lord say: you have to make it clear what visas might! Logo shows up for about 2 mins unmounted the thumb drive successfully unmount folder this,. ) system call, which, like umount ( ) system call, which, like (... For every command. complex trying to support and help someone service files properly so the last thing that was... Access by absolute pathnames, thereby minimising further moutpoint usage one should ingest for building muscle,..., do umount and mount again, try umount -l: lazy umount if facing any issue on umount. Seems the cause for my issue was the nose gear of Concorde located so far?! Best way to deprotonate a methyl Group using OpenWrt the pressurization system to order your service files so. With your life and safefly unplugged the thumb drive partitions ( unmounting one automatically the. Are voted up and rise to the manual page lazy umount, Actually, this for... An airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system backup... In itself does n't care but ExFAT ( like SSD drives ) does care of PWD but others!