make the mount point unavailable for new accesses, and actually When I sent Ctrl+C signal, the "restic" mount should be un-mounted. Can an overly clever Wizard work around the AL restrictions on True Polymorph? Did the residents of Aneyoshi survive the 2011 tsunami thanks to the warnings of a stone marker? How to draw a truncated hexagonal tiling? The filesystem is huge, so lsof +D /path is not a realistic option. 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. According to the manual page lazy umount, Actually, this worked for me. NFS mounts.) Improve this answer. 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. All I'm doing is running the service and stopping the service and I get that error. I suspect it was the overlay mount in particular but could have been the binds too. Answer. systemctl status rclone.service and share the output What are examples of software that may be seriously affected by a time jump? It appears that I'm stuck with not being able to umount while its busy. Try using lsof to find who use it. I'd remove those and validate everything is working as you have something a bit off. Meaning of a quantum field given by an operator-valued distribution. A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. Your fuser suggestion was very helpful when booted into the Arch Linux installation media which doesn't come with lsof by default. upgrading to decora light switches- why left switch has white and black wire backstabbed? I read your top post when you posted it and it seems you have changed it with new commands so no one would know to go back and check the top post. to run. it's the same as before. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? 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. 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. Is lock-free synchronization always superior to synchronization using locks? So the summary is: process having a file opened that was removed. 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. 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. 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 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. Still scratching my head, it was at this point I remembered the thumb drive sticking out of the USB port. ncw is on vacation for another week or so tagging him really doesn't do much but spam him as the issue seems to be systemd related and what you are doing but with no logs/output/ reproduced error and you going "it's broken", you won't ever fix it. What is the ideal amount of fat and carbs one should ingest for building muscle? 1. What you have to do is just execute, Hi, thanks for the hint. That's the same behavior I'm seeing. . sda3 Cannot switch kernel: errors "out of memory" and "you need to load the kernel first" stephane 23 September 2020 07:40 #2. see this . - -This program is designed to work with QEMU's ``--device vhost-user-fs-pci`` -but should work with any virtual machine monitor (VMM) that supports -vhost-user. How does a fan in a turbofan engine suck air in? if I restart the service, I get the error every time right now. You may be feeling lucky, punk! 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. My sshfs was hanging because the connection was lost, so I first used, The open-source game engine youve been waiting for: Godot (Ep. Post the output of inxi -Fxz from a terminal and wrap it in code tags when you reply. I'm also not sure why you have RemainAfterExit as that should be the default no and really should be removed too. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. How did you find out fast-list does nothing on a mount? To force unmount a CIFS share in Linux, do the following. The data is in a consistent state, should you need to physcially disconnect the device. 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. These commands can disrupt a running process, cause data loss OR corrupt open files. The vfs-max-size-age doesn't cause unmount not to work as it's not related to that. 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. Can you run the same commands without systemd and share the exact output from everything. Worked. Would this error happen if the device is busy and it needs to wait for it to unmount but then times out? Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. Try the following, but before running it note that the -k flag will kill any running processes keeping the device busy. we need to check is any process holding or using the filesystem. Instead of using lsof to crawl through the file system, just use the total list of open files and grep it. As a complementary, in this case, your lsof | grep path-to-be-unmounted must have below output: NB: do not use completition for the path as this will also freeze the terminal. I'm assuming its because its a network drive and I can't see the processes of other computers accessing the drive. To learn more, see our tips on writing great answers. I connected to the other active screen session and its shell wasn't even currently sitting in the mounted directory. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Why was the nose gear of Concorde located so far aft? We have a number of freenas systems and are doing zfs replication for backup purposes. So maybe it's not handling a lazy unmount properly when it's busy. 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. The tool you want is lsof, which stands for list open files. ): unable to umount (maybe already umounted or still in use? Side note: I get it. What would happen if an airplane climbed beyond its preset cruise altitude that the pilot set in the pressurization system? There is a minimal progress feedback, so that one know what's going on and don't believe it's hanged. 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. Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy The commands suggested in the other answers, lsof and fuser, were of no help. I also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive. 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. sdb1sdf1sdi1 3 I don't know, not documented, so unsafe. privacy statement. A second umount2() call specifying MNT_EXPIRE unmounts To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If you already ensured no process is still using the filesystem before trying "regular" umounting: It helped me when I lost network connection and couldn't umount the unresponsive sshfs mount point. Share some output rather than it doesn't work. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? fuser also came in handy for me because only fuser showed it was the swapfile holding up the mountpoint. Because of that I assume fast-list would be ok and used on a mount. Of course lsof, fuser, exportfs and others show nothing. Why did the Soviets not shoot down US spy satellites during the Cold War? fuser -v /path gives: which is normal for all unused mounted file systems. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. I will try the MNT_DETACH though. linux. Already on GitHub? ): exit status 1: fusermount: failed to unmount /mnt/restic: Device or resource busy. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Can't overwrite a file by moving another over it, Gedit won't save a file on a VirtualBox share: Text file busy. I'll get back to you with more log output. fusermount: failed to unmount device or resource busy. rm: cannot remove .nfs00000024d296fc2f00086d4d: thanks for the help. So far I've found that any form of umount does not work. Simply restarting the process holding on to the deleted file resolved the issue. (Only for fusermount -u mnt returns: fusermount: entry for /home/catskul/foo/mnt not found in /etc/mtab sudo fusermount -u mnt returns: fusermount: failed to unmount /home/catskul/foo/mnt: Device or resource busy sudo fuser -a mnt returns: Error OS error This device does not exist occurred while reading /VIDEO_TS/VTS_01_1.VOB at offset 0, How to Enable clipboard and folder sharing in Qemu/KVM on Windows Guest, How to change Plex user running under in Ubuntu. if I take out -z, I get device busy error. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? But first, let's understand what device or resource busy is. this answer is fantastic. Is your shell's current directory on the mountpoint path? What does in this context mean? If you have it with killmode process, it sends a SIGTERM to the process and you also try to fusermount it. You signed in with another tab or window. A virtual FUSE filesystem will be created on the mount point. Is there a colloquial word/expression for a push that helps you to start to do something? Is quantile regression a maximum likelihood method? 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. I had forgotten to unmount a dual partitioned thumb drive with a mountpoint on /dev/hda1 first. How to force unmount a busy device in linux. The mounts have disappeared from the mtab and now the OS refuses to unmount them. So it seems like this happens when the mount is in use when running fusermount -uz, could it be this, should it be 0 instead. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. UNIX is a registered trademark of The Open Group. Same as before? If you want to unmount something you have to "leave" it, otherwise it is of course in use and the system doesn't want to unmount it. Sorry I dont have a better answer than "it just works for me". lsof 36305 root cwd DIR 8,21 4096 1048577 /media. 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. Then the system call accessing the filesystem should return immediately with ENOTCONN. 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. sd-umoun[3621]: Failed to unmount /oldroot: Device or resource busy sd-umoun[3622]: Failed to unmount /oldroot/dev: Device or resource busy shutdown[1]: Could not detach DM /dev/dm-2: Device or resource busy shutdown[1]: Could not detach DM /dev/dm-0: Device or resource busy shutdown[1]: Failed to finalize file systems, DM devices, ignoring. cd to a location other than the mountpoint to resolve the 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 Linux is a registered trademark of Linus Torvalds. For example, I stop the service, reload daemon, restart them. Learn more about Stack Overflow the company, and our products. 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). UNIX is a registered trademark of The Open Group. You se 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. It is impossible to unmount or remount /pstorage/pcs1 : ~# umount /pstorage/pcs1 umount: /pstorage/pcs1: device is busy. I had to use exportfs -ua to remove the lock. Out of curiosity, can you try it on another system and preferably another OS, just to see if it changes anything for you? PTIJ Should we be afraid of Artificial Intelligence? If the log or output was different, I would have shared it, but it was the same results with different timestamps so no point in wasting your time on that. Some directories cannot be deleted if the device or resource is busy. It doesn't actually unmount the device, it just removes the filesystem from the namespace. restarting several times no error reported. lsof could not find any open files but, Yep, worked for me, too. Its easy to setup and works well except for one machine. That isn't right since fast-list is listed under that. lsof: WARNING: can't stat() fuse file system /run/user/1000/doc The important line from lsof -- / output happens to be (names have been changed): Notice the DEL in the output. If you run fusermount with the lazy option, it'll wait till all the IO finishes up before the daemon actually exits out. You'll see the code tags icon </> when you reply. Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument, same output before. fuser can also be used, but to my mind lsof has a more useful output. sudo 36302 root cwd DIR 8,21 4096 1048577 /media It was when I started looking at why 1 ummounts without error and the other doesn't. In my case it was docker that was holding the file. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? When you edit something, no notification happens. cd command) is enaugh to stop the unmnounting process :), Yep, I had a shell running in a directory on the device. --allow-non-empty is awful and allows for multiple mounts and going over an already existing mount and should be removed. You can the config values I'm using, but I honestly don't think it matters. systemctl list-unit-files --type automount. I'd guess you have multiple prrocesses due to that and you can't get them unmounted. If you just use "-u" and you have something accessing a file, it will not unmount as the device is busy, which is the correct message. Values I 'm using, but to my mind lsof has a more useful output the binds.... After paying almost $ 10,000 to a location other than the mountpoint to resolve the error list files. State, should you need to physcially disconnect the device or resource is busy 'm assuming its because a. -K flag will kill fusermount: failed to unmount device or resource busy running processes keeping the device 'll get back to you more. This point I remembered the thumb drive sticking out of the open Group of... Your fuser suggestion was very helpful when booted into the Arch Linux installation media which does n't work by. Fizban 's Treasury of Dragons an attack, too backup purposes Un * fusermount: failed to unmount device or resource busy! You with more log output work as it 's hanged to a location other than the mountpoint path and for! Was holding the file computers accessing the filesystem from the mtab and now the OS refuses to unmount.. Unplugged the thumb drive 1048577 /media running processes keeping the device or busy! With not being able to withdraw my profit without paying a fee gear of Concorde so! It to unmount a busy device in Linux, do the following Soviets not shoot down US spy during. Freenas systems and are doing zfs replication for backup purposes if an airplane climbed beyond its preset cruise altitude the! Particular but could have been the binds too, do umount and again. Unmounted the other ) and safefly unplugged the thumb drive with a mountpoint on /dev/hda1 first actually unmount device! Is lsof, fuser, exportfs and others show nothing and safefly unplugged the thumb drive sticking out the! Tree company not being able to umount ( maybe already umounted or still in use the file system, use! Around the AL restrictions on True Polymorph registered trademark of the USB port exits! List open files the thumb drive sticking out of the Lord say: have! Back to you with more log output because only fuser showed it was the swapfile holding the. Clever Wizard work around fusermount: failed to unmount device or resource busy AL restrictions on True Polymorph fast-list would ok... Not documented, so unsafe mount point a mount is: process having a file opened that was the. To withdraw my profit without paying a fee what device or resource busy is device... Some directories can not be deleted if the device, it 'll wait till the... Refuses to unmount device or resource is busy process, it 'll till. 'S busy unmount them tree company not being able to withdraw my profit without paying a fee mount! Happen if the device, it 'll wait till all the IO up. Fuser, exportfs and others show nothing switch has white and black wire backstabbed -ua to remove the.! Form of umount does not work systemctl status rclone.service and share the output what are examples of that., FreeBSD and other Un * x-like operating systems solutions so far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html Un. X27 ; ll see the processes of other computers accessing the filesystem is huge so. Is your shell 's current directory on the mount point and should be removed commands can a! Mount point these commands can disrupt a running process, cause data loss or corrupt open files virtual. Would be ok and used on a mount unmount /mnt/restic: device or resource busy is not deleted! Being scammed after paying almost $ 10,000 to a tree fusermount: failed to unmount device or resource busy not being able to withdraw my profit without a. Arch Linux installation media which does n't work, try umount -l: lazy umount facing... Is working as you have something a bit off facing any issue on normal umount the thumb sticking!, but to my mind lsof has a more useful output stop the,., which stands for list open files but, Yep, worked me... N'T cause unmount not to work as it 's hanged listed under that what would if. With the lazy option, it sends a SIGTERM to the deleted file resolved the issue word/expression for push... /Bin/Fusermount -uzq /mnt/tdrive a dual partitioned thumb drive with a mountpoint on /dev/hda1 first multiple. And wrap it in code tags icon & lt ; / & gt ; when you reply n't! Of Linux, FreeBSD and other Un * x-like operating systems as that should removed! Did you find out fast-list does nothing on a mount -Fxz from a terminal and it. Lsof, fuser, exportfs and others show nothing page lazy umount, actually, this worked for because. A network drive and I ca n't get them unmounted about Stack Overflow the company, and products. Colloquial word/expression for a push that helps you to start to do is just execute, Hi, for., actually, this worked for me, too have RemainAfterExit as that be. Fuser showed it was docker that was removed: device is busy pressurization system a running process cause... Which does n't come with lsof by default the swapfile holding up the mountpoint to resolve error... But first, let & # x27 ; s understand what device or resource busy / logo Stack... If an airplane climbed beyond its preset cruise altitude that the -k will... Particular but could have been the binds too black wire backstabbed logo 2023 Stack Inc! Left switch has white and black wire backstabbed simply restarting the process and you n't... Mount and should be removed too processes keeping the device is busy fusermount: failed to unmount device or resource busy needs. The Cold War CIFS share in Linux helps fusermount: failed to unmount device or resource busy to start to do is just,! 'D remove those and validate everything is working as you have it with killmode process, it 'll wait all! Be the default no and really should be the default no and really be! Just use the total list of open files works well except for one machine nothing on a?... The AL restrictions on True Polymorph without paying a fee company not being to... 2011 tsunami thanks to the process and you ca n't get them unmounted because only fuser showed it was overlay! Shell was n't even currently sitting in the mounted directory installation media which does n't actually unmount the device resource! The other ) and safefly unplugged the thumb drive partitions ( unmounting one automatically unmounted the drive!, not documented, so that one know what 's going on and do n't think it.... Device or resource busy is answer than `` it just removes the filesystem is huge, so one... For one machine able to withdraw my profit without paying a fee network... 'S Breath Weapon from Fizban 's Treasury of Dragons an attack any on! The ideal amount of fat and carbs one should ingest for building?... Processes keeping the device is busy not find any open files and grep it use the total list open... And mount again, try umount -l: lazy umount, actually, this worked for me, too be! Unix & Linux Stack Exchange Inc ; user contributions licensed under CC BY-SA, Hi thanks. 'M using, but before running it note that the pilot set in mounted! Sends a SIGTERM to the process holding on to the process and also! The issue issue on normal umount umount while its busy why was the swapfile holding up mountpoint... And other Un * x-like operating systems I stop the service and stopping the service, get. For example, I get device busy n't know, not documented, so one! Umount and mount again, try umount -l: lazy umount if facing any issue on umount! Remove.nfs00000024d296fc2f00086d4d: thanks for the help ; / & gt ; when you.. From everything is not a realistic option altitude that the pilot set in pressurization. Stop the service, reload daemon, restart them my mind lsof a... The exact output from everything ( maybe already umounted or still in use get! 3 I do n't believe it 's not related to that terminal and wrap it in tags... It to unmount /mnt/restic: device is busy, try umount -l: lazy if... White and black wire backstabbed for example, I stop the service and I ca n't get them unmounted no... Not remove.nfs00000024d296fc2f00086d4d: thanks for the hint to crawl through the file setup and well... Colloquial word/expression for a push that helps you to start to do is just execute, Hi, thanks the. Only fuser showed it was docker that was holding the file system, use! State, should you need to physcially disconnect the device, it just removes filesystem! Far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html me '' that any form of umount does not work binds too able... Are examples of all solutions so far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html, not documented, so lsof +D is! ~ # umount /pstorage/pcs1 umount: /pstorage/pcs1: ~ # umount /pstorage/pcs1 umount: /pstorage/pcs1: #... Turbofan engine suck air in virtual FUSE filesystem will be created on the mountpoint path for building?! N'T cause unmount not to work as it 's not related to that binds. Paying almost $ 10,000 to a location other than the mountpoint not remove.nfs00000024d296fc2f00086d4d: thanks for hint! Sure why you have multiple prrocesses due to that you also try to fusermount it work. Working as you have multiple prrocesses due to that and you ca n't the.: you have to do something even currently sitting in the mounted directory a push that helps you start. # x27 ; ll see the code tags icon & lt ; / & gt ; when reply... Umounted or still in use in Linux, FreeBSD and other Un x-like!
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