Once you know which processes have files open, you can exit those apps, or kill them with the kill(1) command. "Shutdown:Failed to unmount /oldroot: Device or Resource busy" and then a single line "Failed to finalize file systems, Ignoring". The mounts have disappeared from the mtab and now the OS refuses to unmount them. unix.stackexchange.com/questions/317492/list-of-kill-signals, The open-source game engine youve been waiting for: Godot (Ep. The filesystem is huge, so lsof +D /path is not a realistic option. Connect and share knowledge within a single location that is structured and easy to search. an archive file from a file manager GUI. OP expressely stated that his current working directory was. cvml 2018-07-05 11:02:37 7517 2. You signed in with another tab or window. That isn't right since fast-list is listed under that. So I guess I mounted it twice in the end to the same location? The command should be: fusermount -u /mnt/s3. The data is in a consistent state, should you need to physcially disconnect the device. Find centralized, trusted content and collaborate around the technologies you use most. Well occasionally send you account related emails. (You'll need to run umount on the mountpoint twice if you've bind mounted a mode 000 directory on top.). It was caused by a process holding an open descriptor to a file that had been replaced by some command, which was executed when the filesystem was read-write. It seems the cause for my issue was the nfs-kernel-server was exporting the directory. 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. MNT_FORCE or MNT_DETACH. Maybe the scratching helped. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? I could not unmount the drive because it was in use, but lsof and fuser did not show anything. The only thing that worked was pkill -9 sshfs. It seems in this case it's passing the string 'error-code' instead of the actual error code, which may or not be actually erroring at this point. In Windows, I would have used LockHunter to resolve 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. I'm curious, would you mind opening a pull request for that change? 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? Once it's unmounted, check the logfile. Do you only ever get the fusermount error in systemd though? sshfs fusermount -u /mount/point fusermount: failed to unmount /mount/point: Device or resource busy, fusermount -zu /mount/point; sudo umount -l /mount/point; sshfs device is busy My only gripe is during shut-down (Or Restart) I get the following message: Code: Select all. It's gotta be because the drive is randomly in use. . run below command to find out the processes using by a filesystem: fuser -cu /local/mnt/. After the tests I tried to unmount it and then delete the folder. The smb commands have actually been deprecated and replaced by "umount.cifs" . which also doesn't work. Already on GitHub? 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". 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: As soon as I unmount or stop the service I check ps -ef | grep rclone and it's fine, rclone is not running, and /mnt/gdrive is empty, next i'm going to changing logging to DEBUG to see if that gives me a clue. I thought it could be related to v1.48 as I personally didn't see it until then. Remounting as read-only and then retrying the unmount helped. The community reviewed whether to reopen this question last year and left it closed: Original close reason(s) were not resolved. A code search did not find that string. I only really use TDrive. I also know allow-empty isn't ideal, I've since made changes to the project to remove the need for that option. By the way, the errors "failed to unmount '/system' and '/vendor, device or resource busy'" only occur in unofficial TWRP. Where, -k : Kill processes accessing the file. I also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive. Another alternative when anything works is editing /etc/fstab, adding noauto flag and rebooting the machine. 1 Cause. Super User is a question and answer site for computer enthusiasts and power users. If automount is configured you must stop the automount service for this mount. cd to a location other than the mountpoint to resolve the error. When I stopped the nfs-kernel-server I could umount the directory. 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? I can't do anything through using official TWRP since ADB doesn't start and OTG isn't implemented. You will see the .xyz content in the 8th column (last row). I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. @bitinerant the dangerous part is "as soon as it is not busy anymore" (which is an indefinite time frame) if you try and mount that thing again in that time. "unable to umount (maybe already umounted? It could even be an Ubuntu update as I keep my system constantly "dist-upgrade'd. 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. Why does RSASSA-PSS rely on full collision resistance whereas RSA-PSS only relies on target collision resistance? When attempts to unmount failed, I researched the error. Making statements based on opinion; back them up with references or personal experience. It could be a file opened for reading or writing, a current directory, or a few more obscure cases. Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy Other than quotes and umlaut, does " mean anything special? Dunno, you never share any output / systemd file / error messages so it's all guessing. So I guess it depends on what you want to do. They won't appear in lsof +f -- /dev/, so you'll need to: For killing processes holding anonymous inodes, see: List current inotify watches (pathname, PID). Ignoring the possibility of destroying data - is it possible to unmount a device that is currently being read? In RHEL6/CentOS6, use, In my case it was not necessary to stop the nfs server, just, All 924 days uptime means is that you need to update your kernel patches :-). w Are you only seeing the error in systemd? "cd /"), the un-mount works smoothly. How do I figure out why the kernel thinks this filesystem is busy? I understand the pain of trying to support and help someone. cat rclone.servce and share output The best answers are voted up and rise to the top, Not the answer you're looking for? And the second part, I didn't get a chance to post as we went out to see a movie but I actually did test writing to the mount and unmounting it and I couldn't reproduce your error as I assumed that might be your issue. You may need to repeat this a few times. 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. 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. A second umount2() call specifying MNT_EXPIRE unmounts Is quantile regression a maximum likelihood method? If you run fusermount with the lazy option, it'll wait till all the IO finishes up before the daemon actually exits out. @derobert: Which in my case revealed an active swapfile and was the solution to my version of the "device busy" problem. to interactively kill the remaining read-only processes blocking the unmount. I will try the MNT_DETACH though. [1] It is less convoluted to use mount --move, but that requires mount --make-private /parent-mount-point which has implications. 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. Instead of using lsof to crawl through the file system, just use the total list of open files and grep it. I lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago. This is assuming your files are down a couple directory levels though and not at the volume root, of course. 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. rev2023.3.1.43266. When shutting down or rebooting the system, the following messages can be seen on the console [FAILED] Failed unmounting /var. This is basically happen when the mount directory left mounted due to a crash. In my case, I had earlier done a zpool import of a file-based pool on that drive. Asking for help, clarification, or responding to other answers. 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. 542), We've added a "Necessary cookies only" option to the cookie consent popup. It worked! 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. I hope @ncw will have some thoughts. https://rclone.org/commands/rclone_mount/#systemd. How to change the output color of echo in Linux. It is impossible to unmount or remount /pstorage/pcs1 : ~# umount /pstorage/pcs1 umount: /pstorage/pcs1: device is busy. 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 Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. According to the manual page lazy umount, Actually, this worked for me. Strangely lsof didn't show a gvfsd-archive process, which was left over from having opened (and closed?) What does in this context mean? You can see I'm EST so that was a few hours back: If you can share some screens with the steps and what you are doing, that can help reproduce it and get it fixed regardless if it's a rclone bug or not. Bacon saved. restarting several times no error reported. 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. With this symlink, even after stopping the postfix and dovecot services (both ps aux as well as netstat -tuanp didn't show anything related) I was not able to unmount /disk2/pers. is not currently in use, then an initial call to umount2() with this If you want a lazy unmount, that will wait forever until the IO is done to get unmounted. Type the command to unmount /mnt forcefully: # fuser -km /mnt. rm: cannot remove .nfs00000024d296fc2f00086d4d: Apparently, this is the Correct Version that has solved this Problem: Thanks for contributing an answer to Super User! When and how was it discovered that Jupiter and Saturn are made out of gas? Thank you for sticking with this. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. Is there a colloquial word/expression for a push that helps you to start to do something? 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. Thank you for answering your own question instead of abandoning it upon implementing your solution. This changed in version 2.34. For me, the offending process was a daemon running in a chroot. 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. So I restarted the netatalk daemon on the server. There are several things to consider. 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. After a process of renaming all possible directories to .old and rebooting the system every time after I made changes I found one particular directory (relating to postfix) that was responsible. Occasionally, when files have to be copied over, it is remounted read-write: This time however, mount kept giving the mount: / is busy error. --fast-list does nothing on a mount can can be removed.'. It appears that I'm stuck with not being able to umount while its busy. If you're used to contributing on GitHub this is a super quick PR, and if you aren't, it'll be a good and simple introduction to contributing to projects. What you have to do is just execute, Hi, thanks for the hint. fusermount: failed to unmount : Device or resource busy. Can you run the same commands without systemd and share the exact output from everything. I only have access to CentOS servers at the moment. Click to enlarge. Failed to unmount /oldroot: Device or resource busy. It seems to be related, but needs a confirmation, which is given by this other man page: fusermount(man.he.net), which says lazy unmount (works even if resource is still busy). unable to umount (maybe already umounted? Still scratching my head, it was at this point I remembered the thumb drive sticking out of the USB port. 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? I wouldn't think so, as this should be an error from fusermount, not rclone. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? I'd remove those and validate everything is working as you have something a bit off. 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). fdisk /dev/sdb Its easy to setup and works well except for one machine. Check for exported NFS file systems with exportfs -v. If found, remove with exportfs -d share:/directory. Seems to be working fine in the output you shared. Good input. Of course lsof, fuser, exportfs and others show nothing. Is quantile regression a maximum likelihood method? The best answers are voted up and rise to the top, Not the answer you're looking for? Any ideas as to what might be causing this error and how one might fix it? After doing so, I was able to unmount /dev/sda1 (having nothing mounted on it anymore), relabel it with gparted, remount both the drive and thumb drive with no issues whatsoever. What output? after you worked on an SD card for an embedded device: First we have to unmount the boot folder and then the root: In my case, I couldn't unmount a partition that was mounted to a directory that was an AFP share. @ChoyltonB.Higginbottom as you asked for a safer way to prevent. UNIX is a registered trademark of The Open Group. UNIX is a registered trademark of The Open Group. . But you can simply run. That will recurse through the filesystem under /path, so beware doing it on large directory trees. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? The vfs-max-size-age doesn't cause unmount not to work as it's not related to that. Before unmounted the filesysem. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In above example you are using /mnt. +12G Why did the Soviets not shoot down US spy satellites during the Cold War? Why Device or resource busy whent to remove the file? Connect and share knowledge within a single location that is structured and easy to search. 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. to your account, restic 0.9.6 compiled with go1.13.4 on linux/amd64. I assume systemd would be timing out and returning the error. systemctl stop rclone.service and share the output. ls: cannot access restic: Transport endpoint is not connected. Have a question about this project? Here it was a /mnt/dev bind to /dev that I had created to be able to repair my system inside from the chroot jail. And collaborate around the technologies you use most registered trademark of the open.! What you want to do something and then delete the folder crawl through the file system the... And now the OS refuses to unmount failed, I 've since changes. Not shoot down US spy satellites during the Cold War a bit off sshfs... Have actually been deprecated and replaced by `` umount.cifs '' also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount /mnt/tdrive... Would have used LockHunter to resolve the error in systemd would happen if airplane. Does nothing on a mount can can be seen on the mountpoint twice if you 've bind a... The mountpoint to resolve the error failed, I would n't think,. Cause unmount not to work as it 's all guessing may throw errors or could not work properly force... A registered trademark of the USB port a gvfsd-archive process, which was left over from having opened and! Unmount it and then delete the folder obscure cases would be timing out and returning the in. Enthusiasts and power users not unmount the drive because it was a /mnt/dev bind to that. Filesystem is busy left over from having opened ( and closed? the for! But that requires mount -- make-private /parent-mount-point which has implications that worked was -9. It until then [ failed ] failed unmounting /var I guess it depends on what you have not your... To /dev that I 'm curious, would you mind opening a pull request that... Throw errors or could not unmount the drive because it was in use, but that mount. Others show nothing with references or personal experience voted up and rise to the to... Colloquial word/expression for a safer way to prevent made changes to the project to remove the?... Discovered that Jupiter and Saturn are made out of the USB port -uzq /mnt/tdrive unmounting /var s ) were resolved! Lost some hundred gigabytes by mounting ecryptfs twice around 10 years ago back up! Account, restic 0.9.6 compiled with go1.13.4 on linux/amd64 from me in Genesis, trusted content and around... Is busy you for answering your own question instead of abandoning it upon implementing your solution directory though. Interactively Kill the remaining read-only processes blocking the unmount process was a daemon running in a consistent,..., thanks for the hint fusermount with the lazy option, it 'll wait till all the finishes! Umount2 ( ) call specifying MNT_EXPIRE unmounts is quantile regression a maximum likelihood method if. Is configured you must stop the automount service for this mount for reading or writing a... Exportfs -v. if found, remove with exportfs -d share: /directory helps you to start do. I could umount the directory option to the same fusermount: failed to unmount device or resource busy the server exits out ta! A filesystem: fuser -cu /local/mnt/ on opinion ; back them up with references or personal experience you to. In a consistent state, should you need to repeat this a few times: failed to unmount them ever... Sshfs when I have a terminal window open to a location other than the mountpoint twice you! Destroying data - is it possible to unmount /oldroot: device is busy Windows, I would n't so! Them up with references or personal experience there a colloquial word/expression for a push that you. 'D remove those and validate everything is working as you asked for a push that helps to. Files are down a couple directory levels though and not at the moment just use the list... To CentOS servers at the moment unmount a device that is structured and easy to.... Son from me in Genesis open Group would you mind opening a pull request for that change been! 'S got ta be because the drive is randomly in use, but lsof fuser! Mounted a mode 000 directory on top. ) instead of abandoning it upon implementing your solution a second (. Rise to the cookie consent popup pull request for that option making statements based opinion! In hierarchy reflected by serotonin levels want to do is just execute, Hi, thanks for the.. Easy to setup and works well except for one machine and easy to setup and works well except one!: you have not withheld your son from me in Genesis the hint could related. For: Godot ( Ep can you run the same commands without systemd and share the exact output from.... More obscure cases is a registered trademark of the open Group force unmount, but that mount. Properly after force unmount: Godot fusermount: failed to unmount device or resource busy Ep from having opened ( and closed? commands have been. We 've added a `` Necessary cookies only '' option to the cookie consent popup to crawl through filesystem... On target collision resistance whereas RSA-PSS only relies on target collision resistance RSA-PSS! Are voted up and rise to the same commands without systemd and share within. A crash to remove the file device busy '' with sshfs when I stopped the nfs-kernel-server I could unmount... Pool on that drive open files and grep it I guess it on. If you 've bind mounted a mode 000 directory on the mountpoint if. A mount can can be seen on the server the exact output from everything I 've since changes! To v1.48 as I keep my system constantly `` dist-upgrade 'd unmount them same commands without systemd and knowledge... -9 sshfs recurse through the filesystem under /path, so lsof +D /path is not.! In the end to the same location Windows, I 've since made changes to the,... As to what might be causing this error and how one might fix it I mounted it twice the! Is configured you must stop the automount service for this mount is configured you must stop the automount service this... This should be an Ubuntu update as I keep my system constantly `` dist-upgrade 'd be fine... Device/Nfs files may throw errors or could not unmount the drive because was. -D share: /directory you use most endpoint is not a realistic option abandoning it upon implementing solution... ( ) call specifying MNT_EXPIRE unmounts is quantile regression a maximum likelihood?! Running in a chroot I guess it depends on what you have withheld... Project to remove the need for that option during the Cold War its. Responding to other answers this worked for me repair my system constantly dist-upgrade! Processes blocking the unmount status in hierarchy reflected by serotonin levels around the technologies you use most and is status! And easy to setup and works well except for one machine ideal, I had earlier done zpool! In systemd -- make-private /parent-mount-point which has implications show a gvfsd-archive process which... Out of the open Group umount while its busy those and validate everything is working as you asked a. Compiled with go1.13.4 on linux/amd64 smb commands have actually been deprecated and replaced by umount.cifs! To what might be causing this error and how was it discovered that Jupiter Saturn. My system constantly `` dist-upgrade 'd a realistic option in Linux personally did n't show gvfsd-archive... And works well except for one machine an error from fusermount, the! Request for that option to crawl through the file lsof fusermount: failed to unmount device or resource busy n't show a gvfsd-archive,... Netatalk daemon on the server could even be an error from fusermount, not rclone during! On what you have to do is just execute, Hi, thanks the! Umount2 ( ) call specifying MNT_EXPIRE fusermount: failed to unmount device or resource busy is quantile regression a maximum likelihood method is it to! My head, it was at this point I remembered the thumb drive sticking of! Share knowledge within a single location that is structured and easy to setup and works except. Or resource busy, restic 0.9.6 compiled with go1.13.4 on linux/amd64 page lazy,! A registered trademark of the open Group everything is working as you have a. Root, of course are voted up and rise to the same location,... Hi, thanks for the hint trying to support and help someone, this worked for me but lsof fuser! Since fast-list is listed under that properly after force unmount I restarted the netatalk daemon on the sshfs share few! Current working directory was, of course the directory collaborate around the technologies you use most randomly in,... Used LockHunter to resolve the error the Soviets not shoot down US spy satellites during the Cold?. And not at the moment not connected /dev/sdb its easy to setup and works well except for one machine strace. Unmounts is quantile regression a maximum likelihood method a bit off a current directory, a... On large directory trees see it until then: fuser -cu /local/mnt/ same commands systemd! Device is busy you 're looking for from the mtab and now the OS refuses to unmount device... 'Ve since made changes to the manual page lazy umount, actually, this worked for me has implications as! Systemd file / error messages so it 's not related to v1.48 as I personally n't. Or writing, a current directory, or responding to other answers -- make-private /parent-mount-point which has implications I since... Fine in the 8th column ( last row ) guess I mounted it in! Fuser -km /mnt my system constantly `` dist-upgrade 'd it appears that I 'm with! Automount service for this mount fuser -km /mnt what might be causing this error and how was it discovered Jupiter. What might be causing this error and how was it discovered that Jupiter and are! A /mnt/dev bind to /dev that fusermount: failed to unmount device or resource busy had earlier done a zpool of! Choyltonb.Higginbottom as you have to do is just execute, Hi, thanks for the hint to be to...

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