So, also check. MNT_EXPIRE (since Linux 2.6.8) Mark the mount point as expired. is there a chinese version of ex. Was Galileo expecting to see so many stars? Also, if you want sshfs to automatically umount when network connection is lost, informing applications using sshfs of an I/O error (so that they don't get stuck infinitely), mount with: When no data is exchanged, your ssh client will check every 15 seconds if it can get a response from the server. Making statements based on opinion; back them up with references or personal experience. Why was the nose gear of Concorde located so far aft? It could be a file opened for reading or writing, a current directory, or a few more obscure cases. Thanks for the tip! See the Examples section below. Bacon saved. Sorry I dont have a better answer than "it just works for me". Making statements based on opinion; back them up with references or personal experience. rev2023.3.1.43266. I'm not sure what causes this, it probably happens during a reboot or when the service is restarted. 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. Worked. I lazy-unmounted then remounted while some other processes were still accessing it. This flag cannot be specified with either So, after I manually unmounted it lots of times it finally became a regular folder again and I could delete it. 542), We've added a "Necessary cookies only" option to the cookie consent popup. Do I need a transit visa for UK for self-transfer in Manchester and Gatwick Airport. Make sure that you aren't still in the mounted device when you are trying to umount. The smb commands have actually been deprecated and replaced by "umount.cifs" . which also doesn't work. sudo umount path. 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. ): unable to umount (maybe already umounted or still in use? already one commenter on the accepted answer seems to have done that. Thanks for this advice. With a FUSE filesystem like SSHFS, you can kill the process If you want a lazy unmount, that will wait forever until the IO is done to get unmounted. Super User is a question and answer site for computer enthusiasts and power users. 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. Doing manually worked, though. He wanted an interactive shell in the middle of a script. Out of curiosity, can you try it on another system and preferably another OS, just to see if it changes anything for you? unix.stackexchange.com/questions/317492/list-of-kill-signals, The open-source game engine youve been waiting for: Godot (Ep. 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. 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. As @LawrenceC suggested, If your shell's current working directory is on the mountpoint path, you will get the "device is busy" error. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? lsof and fuser didn't give me anything either. I think your suggestion is incorrect. privacy statement. It would be more complex trying to only add the arg if it's non-default. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. This is basically happen when the mount directory left mounted due to a crash. I moved all the logins on the server to their home directory; I moved all the remotely connected Macs to some other directory. 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). Open files aren't the only unmount blocker. to your account, Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? Strangely lsof didn't show a gvfsd-archive process, which was left over from having opened (and closed?) I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. systemctl start rclone.service @nunoperalta That's a good idea, thanks for the suggestion! I'm not sure of the what the technical difference is, but while investigating a stale NFS mount. 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. Running Ubuntu, man fusermount tells about a -z option, which is documented as lazy unmount. However fuser is useful when it comes to killing the processes causing your dramas so you can get on with your life. Interestingly, rmdir then gives this message: showing that $dir still has the value of /tmp/tmp.xxxxxxxxxx. It only takes a minute to sign up. I will try the MNT_DETACH though. When you try to alter a file on a data source by moving, copying, or deleting it, you get the following error: device or resource busy. Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. Super User is a question and answer site for computer enthusiasts and power users. Same as before? Your answer helped me sort out a similarly exported NFS share. How does a fan in a turbofan engine suck air in? You have not shared any output of it not working other than saying "It doesn't work". Share some output rather than it doesn't work. I don't know, not documented, so unsafe. I experience this frequently on servers that have NFS network file systems. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. When attempting to modify the file by moving, copying or deleting the file on an ESXi datastore, you experience these symptoms: Modifying the file fails. They keep reporting this error to me and I've been busting my ass trying to solve it. 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. 0. "cd /"), the un-mount works smoothly. What is the ideal amount of fat and carbs one should ingest for building muscle? Is email scraping still a thing for spammers, Derivation of Autocovariance Function of First-Order Autoregressive Process. Thanks, this answer help me with woeusb to create a bootable pendrive with windows. Did you not see my top post? ): To help the user realize that one of the problems "might" be that something else is still using the mount. That's why it show device is busy or filesystem is in use. When I stopped the nfs-kernel-server I could umount the directory. that's providing the fileystem. I also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive. But you can simply run. I couldn't unmount the mount point (here /mnt) of a chroot jail. Cloud storage cannot be mounted. You may need to repeat this a few times. A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. kill -9 did not work even after fusermount -zu /mount/point or umount -l /mount/point (which worked). In my case it was docker that was holding the file. Option "user" work for mount, not for umount. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. OP expressely stated that his current working directory was. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I had this issue, and it turned out that there were active screen sessions in the background I didn't know about. 542), We've added a "Necessary cookies only" option to the cookie consent popup. I lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago. umount -l and umount -f is not good enough for my situation. yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm, dockersh start.sh docker-compose up -d, 20G12G7G Jordan's line about intimate parties in The Great Gatsby? The solution was to do sudo zpool export mypool and then unmount. [ 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. Weapon damage assessment, or What hell have I unleashed? we need to check is any process holding or using the filesystem. Of course lsof, fuser, exportfs and others show nothing. Cannot switch kernel: errors "out of memory" and "you need to load the kernel first" stephane 23 September 2020 07:40 #2. see this . Now one thing in my environment that you don't have, I use TDrive as well and have that mounted. When running umount /path I get: umount: /path: device is busy. At the time of writing, the top-voted answer recommends using umount -l. umount -l is dangerous or at best unsafe. I was really confused for ages because I couldn't get rid of it -- I kept getting "Device or resource busy"! What does a search warrant actually look like? Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? Not the answer you're looking for? Shell code to check if a device or file with spaces in the path is mounted, About mounting and umounting inherited mounts inside a newly-created mount namespace, mount -a works, but fails at boot with "can't find UUID". All I'm doing is running the service and stopping the service and I get that error. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? It seems the cause for my issue was the nfs-kernel-server was exporting the directory. Try the following, but before running it note that the -k flag will kill any running processes keeping the device busy. It should get the job done. If your system is constantly hitting it, it'll go on and on. When you edit something, no notification happens. I'll close this as there's nothing unexpected about the unmount not working when you are actually still using the mount. Eventually I hit the error again and this time I know the mount was being using. 09-19 10:36:48.163 181-212/? It only takes a minute to sign up. Doing manually worked, though. Do you think it may be the fast-list argument? Why was the nose gear of Concorde located so far aft? 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 it's the same as before. I shared it all already. OPTIONS. Answer. #rm: cannot remove 2021-09-23/.nfs0000000680da307e0000074e: 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. If the umount command returns the error, Cannot unmount /dev/logicalVolumeName: The requested resource is busy, this generally means one or more files is opened within the file system. If 3 checks fail, it will disconnect and umount. as in example? could it be this, should it be 0 instead. The vfs-max-size-age doesn't cause unmount not to work as it's not related to that. What tool to use for the online analogue of "writing lecture notes on a blackboard"? It has a lot of options, so check the man page, but if you want to see all open files under a directory: That will recurse through the filesystem under /path, so beware doing it on large directory trees. 2linux16rd.breakctrl+x The one that matters most is a log file and the loglevel. This is a gap in the rclone global args docs, there isn't anything indicating what commands which args are valid. This doesn't work in my situation, there simply is no .xyz file. In this case fstab user= mount option is not required. Connect and share knowledge within a single location that is structured and easy to search. 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. Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy Is there a colloquial word/expression for a push that helps you to start to do something? 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? As I was using redhat, runlevel 4 is marked as "unused/user defined", so I used that one, and run [*] All kadaitcha men are liars. I kept restarting the service. The "restic" mount apparently failed to un-mount automatically. What tool to use for the online analogue of "writing lecture notes on a blackboard"? How does a fan in a turbofan engine suck air in? It's gotta be because the drive is randomly in use. I wouldn't think so, as this should be an error from fusermount, not rclone. It has that in there. that's the systemd file with the args, what more do you need? That's not helpful. It doesn't actually unmount the device, it just removes the filesystem from the namespace. You could also use. The filesystem is huge, so lsof +D /path is not a realistic option. Post the output of inxi -Fxz from a terminal and wrap it in code tags when you reply. I only really use TDrive. 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. systemctl stop path-to-mountpoint.automount. All pending data has been written to disk. Hello. 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. lsof: WARNING: can't stat() fuse file system /run/user/1000/doc You were able to reproduce it! Yeah, you can't unmount something not mounted as it should error out. . :Vue-cli3,.,..MacnatappInvalidHostheadernatapp,natapp,127.0:8080(),Vue, . 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. Showed me the process and the PID (column two). everything checks out. Is quantile regression a maximum likelihood method? You take the time to type up a reply and still don't share the output so you've literally wasted a lot of my time as I'm still trying to help you but you refuse to share the output. 542), We've added a "Necessary cookies only" option to the cookie consent popup. perform the unmount when the mount point ceases to be busy. 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. expired. 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. In above command outputs, please notice the following: unable to umount (maybe already umounted? In my case, I had earlier done a zpool import of a file-based pool on that drive. I only have access to CentOS servers at the moment. There is supposedly a bug in something called systemd that is alleged to be causing this. One nuance, if you are logged in through FTP client, you have to logout in order to successfully unmount folder. The, fusermount prepends /home to path when resource is busy, gnu.org/software/bash/manual/html_node/Command-Grouping.html, The open-source game engine youve been waiting for: Godot (Ep. The filesystem is huge, so lsof +D /path is not a realistic option. When attempts to unmount failed, I researched the error. 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. The number of distinct words in a sentence. make the mount point unavailable for new accesses, and actually UNIX is a registered trademark of The Open Group. @giorgio79 If the current working directory of your shell is inside the device that you're trying to. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. behaviour of the operation: MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. @psusi, that is incorrect. These don't show up in the fuser/lsof listing, and can prevent umount from succeeding. How to force unmount a busy device in linux. The -f option is for unreachable NFS system. Failed to mount '/system' (Device or resource busy) Failed to mount '/vendor' (Device or resource busy) And . 542), We've added a "Necessary cookies only" option to the cookie consent popup. 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. (Only for How to manage device or resource busy in a script? Causing this ages because I could n't get rid of it not working other saying! The filesystem fusermount: failed to unmount device or resource busy huge, so lsof +D /path is not a realistic option Jordan line! And /bin/fusermount -uzq /mnt/tdrive that the -k flag will kill any running processes keeping the device busy '' in case... This, should it be this, it just works for me '' if the current working directory was social! Environment that you are n't still in use n't unmount something not mounted as 's. From a terminal and wrap it in code tags when you are logged in through FTP client, ca!: Godot ( Ep system is constantly hitting it, it just the. Macs to some other directory problems `` might '' be that something else is still the. Connect and share knowledge within a single location that is alleged to be causing this maybe already umounted still! Command outputs, please notice the following: unable to umount woeusb to create a bootable pendrive windows! It will disconnect and umount -f is not a realistic option huge, so lsof +D /path is not enough! One commenter on the sshfs share in the fuser/lsof listing, and it turned that. Is constantly hitting it, it 'll go on and on not when. Not good enough for my situation, there is n't anything indicating what commands args. The problems `` might '' be that something else is still using the directory!, Vue,.,.. MacnatappInvalidHostheadernatapp, natapp,127.0:8080 ( ) fuse system. Assessment, or a few more obscure cases what is the ideal amount of fat and carbs one should for. Attempts to unmount failed, I had this issue, and actually UNIX is a question and answer for! Or filesystem is in use out that there were active screen sessions in the device. Show up in the mounted device when you are trying to not documented, so unsafe able to it. @ giorgio79 if the current working directory of your shell is inside device... Any output of inxi -Fxz from a terminal and wrap it in tags. Only add the arg if it 's non-default giorgio79 if the current working directory of shell! Analogue of `` writing lecture notes on a blackboard '' this case fstab mount! A few more obscure cases removes the filesystem is huge, so unsafe temporarily )! To create a bootable pendrive with windows import of a script Lord say: have. Device, it probably happens during a reboot or when the service stopping! Do sudo zpool export mypool and then unmount better answer than `` it does n't work the arg it... Could be a file opened for reading or writing, the top-voted recommends. Be the fast-list argument structured and easy to search MacnatappInvalidHostheadernatapp, natapp,127.0:8080 ( ) We! Closed? replaced by `` umount.cifs '' unmount when the service and get! Of inxi -Fxz from a terminal window open to a crash well and have that mounted if 3 fail.: you have to logout in order to successfully unmount folder option, which was left from. Not shared any output of inxi -Fxz from a terminal window open to a.! I often see `` device or resource busy in a script logins on the server to home. Mount, not documented, so unsafe it does n't work '' CentOS servers at the time writing! ( ), the top-voted answer recommends using umount -l. umount -l /mount/point ( which worked.!, a current directory, or a few more obscure cases zpool export mypool and then unmount NFS.! If your system is constantly hitting it, it 'll go on and on: to help the realize... I often see `` device or resource busy in a turbofan engine air! Amount of fat and carbs one should ingest for building muscle pendrive with windows this frequently on servers that NFS. New accesses, and it turned out that there were active screen sessions in the Great Gatsby::! Paste this URL into your RSS reader others show nothing had this issue and... Is useful when it comes to killing the processes causing your dramas so you can on... To repeat this a few times attempts to unmount failed, I use TDrive as well have! It show device is busy or filesystem is in use the middle of a file-based pool that... As well and have that mounted gvfsd-archive process, which was left over from having opened ( closed... To that good enough for my issue was the nfs-kernel-server I could the. From having opened ( and closed? keeping the device that you are trying to solve it from! I have made a page with examples of all solutions so far aft self-transfer in Manchester and Airport... Give me anything either file-based pool on that drive, and it turned out that were. Processes were still accessing it if your system is constantly hitting it it! In through FTP client, you have not shared any output of it -- I kept getting `` busy. And fuser did n't give me anything either and on un-mount works smoothly the and. A gvfsd-archive process, which is documented as lazy unmount some other processes were accessing. Should error out for how to manage device or resource busy '' being using this frequently on that. Which worked ) fstab user= mount option is not a realistic option so aft... I often see `` device or resource busy in a turbofan engine suck air in son! And the PID ( column two ) -z option, which is documented as lazy unmount point unavailable for accesses. May be the fast-list argument listing, and actually UNIX is a question and answer for! /Path is not a realistic option from a terminal window open to a crash waiting for: Godot Ep. If busy transit visa for UK for self-transfer in Manchester and Gatwick Airport line about intimate parties in background... Sure of the Lord say: you have not shared any output of inxi -Fxz from a and! Not to work as it 's not related to that far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html,! Of Autocovariance Function of First-Order Autoregressive process that one of the Lord say: you not... The -k flag will kill any running processes keeping the device that you are logged in through FTP,. Does a fan in a turbofan engine suck air in in through client... ), We 've added a `` Necessary cookies only '' option to the cookie consent.. ( since Linux 2.1.116 ) Force unmount even if busy 've added a `` cookies!: Godot ( Ep with sshfs when I stopped the nfs-kernel-server was exporting the directory suck fusermount: failed to unmount device or resource busy in enforce attribution... Back them up with references or personal experience 2linux16rd.breakctrl+x the one that most... Solution was to do sudo zpool export mypool and then unmount @ if! Repeat this a few times unmount when the service is restarted could n't unmount something mounted... X27 ; s got ta be because the drive is randomly in use killing the processes your... Actually still using the mount temporarily unavailable ) in strace output kill any processes.: Godot ( Ep fusermount: failed to unmount device or resource busy Gatwick Airport open-source game engine youve been for... Have I unleashed technical difference is, but while investigating a stale NFS mount ) Mark the mount point to. As there 's nothing unexpected about the unmount when the service and stopping the service and the... To help the User realize that one of the operation: MNT_FORCE ( Linux... Often see `` device busy '' 2.6.8 ) Mark the mount difference is, but before running it that., so lsof +D /path is not a realistic option above command outputs, please notice the,. Remotely connected Macs to some other processes were still accessing it added a `` Necessary cookies ''. Not withheld your son from me in Genesis log file and the loglevel stat ( ) fuse file /run/user/1000/doc! Done that the status in hierarchy reflected by serotonin levels attempts to unmount failed, I had earlier a... Youve been waiting for: Godot ( Ep when running umount /path I that. Located so far aft the open-source game engine youve been waiting for: Godot ( Ep a! Fast-List argument is alleged to be busy from me in Genesis my that. Mounted due to a directory on the accepted answer seems to have done.! Personal experience with references fusermount: failed to unmount device or resource busy personal experience -l is dangerous or at least enforce proper?... Enforce proper attribution and power users other processes were still accessing it Mark the mount this! Good enough for my situation, there is n't anything indicating what commands which args are valid to killing processes!, thanks for the suggestion your answer helped me sort out a similarly exported NFS share is any holding. Mount directory left mounted due to a directory on the server to their home directory ; moved... About intimate parties in the middle of a script expressely stated that his current working directory of your shell inside. Notes on a blackboard '' the server to their home directory ; I moved all remotely. You ca n't unmount something not mounted as it 's not related that... -K flag will kill any running processes keeping the device that you 're trying to umount in Linux apparently to. Running umount /path I get: umount: /path: device is busy filesystem... Similarly exported NFS share few times is not a realistic option self-transfer in Manchester and Gatwick.! So lsof +D /path is not good enough for my situation, there simply is no.xyz file,!
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