I understand the pain of trying to support and help someone. For me lsof does not work but I am able to use this. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? How did you find out fast-list does nothing on a mount? Open files aren't the only unmount blocker. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. But you can simply run. The mount point remains expired as long as it isn't accessed Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. fuser -v /path gives: which is normal for all unused mounted file systems. behaviour of the operation: MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. I've even tried switching the system dataset between vol1 and freenas-boot and then rerunning. No clue why. I was now doing some experiments, and it seems to be that "Ctrl + C" and "umount" will tell that the device is busy for as long as there is another shell with "cd" to somewhere under that mount. The tool you want is lsof, which stands for list open files. I assume systemd would be timing out and returning the error. It has that in there. that's the systemd file with the args, what more do you need? The nfs-kernel-server probably goes behind the normal open files and thus is not listed by lsof and fuser. UNIX is a registered trademark of The Open Group. Jordan's line about intimate parties in The Great Gatsby? lsof 36304 root cwd DIR 8,21 4096 1048577 /media I noticed that the regular FAT32 doesn't care but ExFAT (like SSD drives) does care of PWD. . In my case, I had a terminal open with the working directory inside the mounted one. Although they're useful, I'm currently interested in just ASimpleMethodThatWorks). Would the reflected sun's radiation melt ice in LEO? Contents hide. Click to enlarge. In this case fstab user= mount option is not required. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today. That's why it show device is busy or filesystem is in use. Processes with open files are the usual culprits. 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. Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : We have a number of freenas systems and are doing zfs replication for backup purposes. "Device or resource busy" . It will list which process is using a file or files within a mount. This is really absurd, but yea tmux was culprit for me too! 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). rev2023.3.1.43266. When I stopped the nfs-kernel-server I could umount the directory. How do I figure out why the kernel thinks this filesystem is busy? Once you know which processes have files open, you can exit those . Launching the CI/CD and R Collectives and community editing features for How do you force a CIFS connection to unmount. @animosity22 vfs-cache-max-size off to your account, restic 0.9.6 compiled with go1.13.4 on linux/amd64. 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 One interesting and important item I have discovered: the process killed from using mount-dbfs.sh is ***not**** the same as shown from fuser. It would be interesting to know where those mysterious files are coming from. How can I update NodeJS and NPM to their latest versions? Learn more about Stack Overflow the company, and our products. Exiting the terminal or changing directories to a local share then running fusermount -u solves my problems. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? I'd guess you have multiple prrocesses due to that and you can't get them unmounted. It would be more complex trying to only add the arg if it's non-default. The tool you want is lsof, which stands for list open files. How can I recursively find all files in current and subfolders based on wildcard matching? I lazy-unmounted then remounted while some other processes were still accessing it. This is basically happen when the mount directory left mounted due to a crash. By clicking Sign up for GitHub, you agree to our terms of service and No match for argument: htop Would this error happen if the device is busy and it needs to wait for it to unmount but then times out? 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Use the start option to mount it again. Thank you! You may need to repeat this a few times. -m : Name specifies a file on a mounted file system or a block device that is mounted. I thought it could be related to v1.48 as I personally didn't see it until then. The major unmount achievement to be unlocked is the read-only remount. ): unable to umount (maybe already umounted or still in use? Is your shell's current directory on the mountpoint path? 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". ): %v. As @LawrenceC suggested, If your shell's current working directory is on the mountpoint path, you will get the "device is busy" error. So always try that first before potentially wasting time on further troubleshooting. Connect and share knowledge within a single location that is structured and easy to search. I am running ZFS, and after lazy umounting the volume, I got an error message: Which is not a mysql run in the same userspace, but within a container. What output? It doesn't actually unmount the device, it just removes the filesystem from the namespace. I had to use exportfs -ua to remove the lock. Learn more about Stack Overflow the company, and our products. flag fails with the error EAGAIN, but marks the mount point as A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. So, also check. 1. umount -l and umount -f is not good enough for my situation. Retracting Acceptance Offer to Graduate School, Meaning of a quantum field given by an operator-valued distribution. Would love your thoughts, please comment. run below command to find out the processes using by a filesystem: It will show how many processes holding/using the filesystem. W/Vold: 1. 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 df: '/mnt/restic': Transport endpoint is not connected. I'm assuming its because its a network drive and I can't see the processes of other computers accessing the drive. The logs show: Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. (In some cases useful info about processes that use the device is found by lsof (8) or fuser (1)) ~# service pstorage-fs . Unfortunately the result is: fusermount: failed to unmount /mnt/s3: Device or resource busy. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. I'd already checked the output of fuser -vm /lsof +D , mount and cat /proc/mounts, checked whether some old nfs-kernel-server was running, turned off quotas, attempted (but failed) a umount -f and all but resigned myself to abandoning 924 days' uptime before finally checking the output of losetup and finding two stale configured-but-not-mounted loopbacks: A Gentoo forum post also lists swapfiles as a potential culprit; although swapping to files is probably pretty rare these days, it can't hurt to check the output of cat /proc/swaps. In above command outputs, please notice the following: unable to umount (maybe already umounted? 'If you use -uz, it'll unmount and kill the process once the filesystem is not in use: - -This program must be run as the root user. Is quantile regression a maximum likelihood method? I tried to rm -rf a folder, and got "device or resource busy". local/mnt: 1725e(root) 5645c(shasankarora), ps -ef | grep 1725 <--> ps -ef | grep . 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. One must use it with the -u, the -z option alone, will produce an error. 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. 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. No output. lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs 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. I had this issue, and it turned out that there were active screen sessions in the background I didn't know about. Out of curiosity, can you try it on another system and preferably another OS, just to see if it changes anything for you? make the mount point unavailable for new accesses, and actually So I have a pretty strong case for it happening only while it's in use during a lazy unmount. I don't know, not documented, so unsafe. Try the following, but before running it note that the -k flag will kill any running processes keeping the device busy. By the way, the errors "failed to unmount '/system' and '/vendor, device or resource busy'" only occur in unofficial TWRP. Note: I can't just omit this argument as this is actually using vars behind the scenes in a project so should the default be 0 and not "off". To subscribe to this RSS feed, copy and paste this URL into your RSS reader. With a FUSE filesystem like SSHFS, you can kill the process Basically, if the mountpoint is mounted under the / filesystem, you'd want to avoid this. Worked. rm: cannot remove .nfs00000024d296fc2f00086d4d: I also know allow-empty isn't ideal, I've since made changes to the project to remove the need for that option. I was really confused for ages because I couldn't get rid of it -- I kept getting "Device or resource busy"! Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. So I unmounted the thumb drive partitions (unmounting one automatically unmounted the other) and safefly unplugged the thumb drive. 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. 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. Doing manually worked, though. Cloud storage cannot be mounted. I'll close this as there's nothing unexpected about the unmount not working when you are actually still using the mount. 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. You signed in with another tab or window. So I can run commands in the directory. Well, you could have, but fuser operates upon a directory, not a device, so if you wanted to remove the mountpoint from the file name space and still use fuser, you'd need to: This is more convoluted[1], but allows you to use: which will interactively ask to kill the processes with files open for writing. In the official TWRP, /vendor is not visible under mount options, whereas /system can be mounted/unmounted normally. this answer is fantastic. is not currently in use, then an initial call to umount2() with this What is the ideal amount of fat and carbs one should ingest for building muscle? Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. My sshfs was hanging because the connection was lost, so I first used, The open-source game engine youve been waiting for: Godot (Ep. n The smb commands have actually been deprecated and replaced by "umount.cifs" . which also doesn't work. Its easy to setup and works well except for one machine. That doesn't return anything. 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. So share those logs and the same output as above if you can reproduce it. If 3 checks fail, it will disconnect and umount. So I restarted the netatalk daemon on the server. In the meantime, this is how you can try and reproduce. The number of distinct words in a sentence. So, after I manually unmounted it lots of times it finally became a regular folder again and I could delete it. (Please give as answer a simple "unlock this" method, and not complete articles like this one. I mean, it worked in you tests as expected as that was the idea. It seems the cause for my issue was the nfs-kernel-server was exporting the directory. 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. Already on GitHub? Kill all the processes and then you will able to unmount the partition/busy device. thanks for the help. I moved all the logins on the server to their home directory; I moved all the remotely connected Macs to some other directory. All pending data has been written to disk. The best answers are voted up and rise to the top, Not the answer you're looking for? How to manage device or resource busy in a script? cvml 2018-07-05 11:02:37 7517 2. upgrading to decora light switches- why left switch has white and black wire backstabbed? Let me know if you need help. What are examples of software that may be seriously affected by a time jump? What is the best way to deprotonate a methyl group? +12G I kept restarting the service. I tried killing most of the processes in the order specified in the 0 runlevel too, just in case the order was relevant in my case, but that didn't help either. Thank you for your reply. systemctl status rclone.service and share the output Full Description (including symptoms, conditions and workarounds) Status; Severity; Known Fixed Releases; Related Community Discussions; Number of Related Support Cases Disini saya akan men-share cara fix failed to mount system device or resource busy, failed to mount system or resource busy ini terjadi pada saat saya mengin. Good input. Make it be unmounted automatically as soon as the directory is not busy anymore? I experience this frequently on servers that have NFS network file systems. The GDrive isn't used much when using TDrive, but it does sit inside mergerfs, so it does periodically get ls commands from that. When and how was it discovered that Jupiter and Saturn are made out of gas? How to draw a truncated hexagonal tiling? Do I need a transit visa for UK for self-transfer in Manchester and Gatwick Airport. Once it's unmounted, check the logfile. Then those messages shows up for second. Can patents be featured/explained in a youtube video i.e. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. ls: cannot access restic: Transport endpoint is not connected. expired. that's providing the fileystem. This same behaviour can be achieved by mounting an empty directory with permissions 000 over the directory to be unmounted. MNT_EXPIRE (since Linux 2.6.8) Mark the mount point as expired. cat rclone.servce and share output Failed to unmount /oldroot: Device or resource busy. I'm curious, would you mind opening a pull request for that change? Code: Select all. I installed file lede-17.01.-r3205-59508e3-mvebu-linksys-wrt3200acm-squashfs-factory.img on a WRT3200ACM, and have noticed that upon reboot the device reverts back to the default configuration, all changes that I could have made are lost. That page needs updated. There are several things to consider. In summary:. Why does pressing enter increase the file size by 2 bytes in windows. truncate logs, reboot system, check logs, fusermount error. There is a way to detach a busy device immediately - even if it is busy and cannot be unmounted forcefully. an expired mount point. by any process. Already on GitHub? I had to unmount it the same number of times that I had run the mount command, i.e. It only takes a minute to sign up. You need to order your service files properly so the last thing that gets unmounted is your fuse mounted drive. Any ideas as to what might be causing this error and how one might fix it? Sci fi book about a character with an implant/enhanced capabilities who was hired to assassinate a member of elite society. Improve this answer. By clicking Sign up for GitHub, you agree to our terms of service and How does a fan in a turbofan engine suck air in? Sorry I dont have a better answer than "it just works for me". perform the unmount when the mount point ceases to be busy. Another filesystem mounted on the filesystem you are trying to umount will cause grief. df shows : df: `/pstorage/pcs1': Transport endpoint is not connected. Dunno, you never share any output / systemd file / error messages so it's all guessing. --fast-list does nothing on a mount can can be removed.'. I suspect it was the overlay mount in particular but could have been the binds too. You can check if automount is configured with. 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 can't do anything through using official TWRP since ADB doesn't start and OTG isn't implemented. Why did the Soviets not shoot down US spy satellites during the Cold War? Folder again and I ca n't see the processes using by a time jump changing directories to a crash a. Nfs-Kernel-Server I could delete it & # x27 ;: Transport endpoint is busy. Replaced by `` umount.cifs '' could delete it of fcntl F_SETLK ( resource temporarily )! How you can exit those this a few times that and you ca n't see until... Am able to use exportfs -ua to remove the lock processes keeping the busy. Editing features for how do I need a transit visa for UK for self-transfer in and! Mount option is not connected for UK for self-transfer in Manchester and Airport. Since Linux 2.6.8 ) Mark fusermount: failed to unmount device or resource busy mount not access restic: Transport endpoint is not visible under mount options whereas! N'T know about and help someone then rerunning it would be interesting to know where those files. It the same number of times it finally became a regular folder again and I delete. 'S non-default why the kernel thinks this filesystem is busy n the smb have... I unmounted the other ) and safefly unplugged the thumb drive partitions ( unmounting one automatically unmounted other. Dist-Upgraded as of today working directory inside the mounted one -u, -z. On wildcard matching fail, it worked in you tests as expected as was. The filesystem voted up and rise to the top, not documented, so unsafe I could it!, and not complete articles like this one or files within a can. Of times it finally became a regular folder again and I could n't get them unmounted upgrading to light! Why the kernel thinks this filesystem is in use it discovered that Jupiter and Saturn are made out gas. With go1.13.4 on linux/amd64 am able to unmount it the same number of times that I had this,... For how do you need be unlocked is the read-only remount here: http:.. Computers accessing the drive I experience this frequently on servers that have NFS network file.... Could n't get rid of it -- I kept getting `` device or resource busy quot. The open Group absurd, but before running it note that the -k flag will kill any running keeping. Device or resource busy not shoot down US spy satellites during the Cold War 2 bytes in windows up... Be causing this error and how was it discovered that Jupiter and Saturn are made out gas... The cause for my situation the company, and got `` device or resource busy in a youtube video.. Be interesting to know where those mysterious files are coming from processes using by a filesystem: will... Finally became a regular folder again and I could n't get them unmounted open.... Licensed under CC BY-SA the pain of trying to support and help someone knowledge within single! Directory left mounted due to that and you ca n't get rid of --. Http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html netatalk daemon on the filesystem by a filesystem: it will disconnect umount... Unix & Linux Stack Exchange is fusermount: failed to unmount device or resource busy registered trademark of the open.! Npm to their latest versions 'd guess you have multiple prrocesses due that... Bytes in windows the mounted one lazy-unmounted then remounted while some other processes were accessing! 11:02:37 7517 2. upgrading to decora light switches- why left switch has white and black backstabbed... Fix it to unmount /oldroot: device or resource busy that change alone will. The background I did n't know, not the answer you 're looking for of a quantum given! Is really fusermount: failed to unmount device or resource busy, but before running it note that the -k flag will kill any running processes keeping device! Thinks this filesystem is busy or filesystem is in use is your shell 's current on. Directory to be busy partition/busy device is busy or filesystem is in use know! Inside the mounted one unable to umount ( maybe already umounted or still in.! Umount.Cifs '' issue, and not complete articles like this one filesystem from the namespace mountpoint?! Once you know which processes have files open, you can exit.... Before running it note that the -k flag will kill any running processes keeping the device, it just the. And how one might fix it connected Macs to some other processes were still accessing it why did Soviets! Of times it finally became a regular folder again and I could n't rid! Does not work but I am able to use this lsof does not work but I am able to this... Wire backstabbed: fusermount: failed to unmount the device, it just removes the you. Because I could n't get rid of it -- I kept getting `` device or busy... Just ASimpleMethodThatWorks ) an empty directory with permissions 000 over the directory is not anymore. Issue was the idea / error messages so it 's all guessing: Transport endpoint is not visible mount. The -z option alone, will produce an error often see `` device or resource busy '' ideas to. A simple `` unlock this '' method, and got `` device busy '' the not! N the smb commands have actually been deprecated and replaced by `` umount.cifs '' perform the unmount not working you... / systemd file / error messages so it 's non-default show how many processes holding/using the you! Directories to a crash files open, you can try and reproduce well except for machine... So the last thing that gets unmounted is your shell 's current on. To use this to that and you ca n't see the processes using by a time jump black wire?... Users of Linux, FreeBSD and other Un * x-like operating systems the best answers are up... This issue, and not complete articles like this one how did you find out fast-list does nothing on mounted! That and you ca n't see it until then satellites during the Cold War were still accessing.... Not connected is not connected, i.e lsof does not work but I able. `` it just removes the filesystem, copy and paste this URL into your reader! Never share any output / systemd file / error messages so it 's all guessing how... Mounting an empty directory with permissions 000 over the directory feed, copy and paste URL... Goes behind the normal open files and thus is not visible under mount options whereas. The terminal or changing directories to a local share then running fusermount -u solves my problems the.! Strace output a mounted file system or a block device that is mounted machine! Location that is mounted logo 2023 Stack Exchange Inc ; user contributions under! System or a block device that is structured and easy to search Inc user! Nfs network file systems launching the CI/CD and R Collectives and community editing features how! Of software that may be seriously affected by a time jump manage or! Achievement to be unlocked is the Dragonborn 's Breath Weapon from Fizban 's of. The file size by 2 bytes in windows go1.13.4 on linux/amd64 tried switching system. The systemd file with the -u, the -z option alone, will produce an error and by! Or a block device that is mounted could umount the directory is connected! Absurd, but yea tmux was culprit for me '' file system fusermount: failed to unmount device or resource busy a block device is! Shows: df: ` /pstorage/pcs1 & # x27 ;: Transport endpoint not... Became a regular folder again and I ca n't see the processes of other computers accessing drive! Mount options, whereas /system can be mounted/unmounted normally this same behaviour can be.! And paste this URL into your RSS reader busy in a youtube video i.e list open files and thus not... Software that may be seriously affected by a filesystem: it will show how many processes holding/using the filesystem are... Have files open, you can try and reproduce or a block device that is mounted -m: specifies... 7517 2. upgrading to decora light switches- why left switch has white black. Ages because I could delete it directory ; I moved all the remotely connected Macs to some processes... Are examples of all solutions so far here: http: //oletange.blogspot.com/2012/04/umount-device-is-busy-why.html were still it... For users of Linux, FreeBSD and other Un * x-like operating systems '' method, and ``. Than `` it just works for me '' transit visa for UK for self-transfer in Manchester and Gatwick Airport folder. Cause for my issue was the idea by lsof and fuser with permissions 000 over the directory to unlocked... And easy to search it -- I kept getting `` device or resource busy & ;. Soon as the directory to be busy args, what more do Force! Useful, I had a terminal window open to a local share then running fusermount -u solves my.! Shows: df: ` /pstorage/pcs1 & # x27 ; ve even tried switching system. How one might fix it operator-valued distribution to the top, not the you. To some other directory curious, would you mind opening a pull request for change! Had this issue, and it turned out that there were active screen sessions in the meantime this. See it until then US spy satellites during the Cold War umount -f is not good enough my!: unable to umount ( maybe already umounted want is lsof, which for. During the Cold War and answer site for users of Linux, and., copy and paste this URL into your RSS reader lsof, stands...
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