umount a busy device without killing process? I would be happy to help with the docs, but I think you have some knowledge that you could put in the docs as well? Make it be unmounted automatically as soon as the directory is not busy anymore? All files in a file system must be closed before the file system can be unmounted. Try the following, but before running it note that the -k flag will kill any running processes keeping the device busy. UNIX is a registered trademark of The Open Group. unable to umount (maybe already umounted? I lazy-unmounted then remounted while some other processes were still accessing it. I couldn't unmount the mount point (here /mnt) of a chroot jail. I had this issue, and it turned out that there were active screen sessions in the background I didn't know about. Have a question about this project? Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. Cloud storage cannot be mounted. I want to unmount it so that I can remount it with the mp_umask flag so that chroot will work properly. I am assuming it has something to do with the filesystem, since the files are typically named like .nfs000000123089abcxyz. $ sudo umount -l ~/gdrive OK sudo Memo 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. How do I profile C++ code running on Linux? yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm, dockersh start.sh docker-compose up -d, 20G12G7G 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. ): exit status 1: fusermount: failed to unmount /mnt/restic: Device or resource busy, ls: cannot access restic: Transport endpoint is not connected, df: /mnt/restic: Transport endpoint is not connected. The community reviewed whether to reopen this question last year and left it closed: Original close reason(s) were not resolved. Killing those other shell sessions fixed the issue for me. as in example? A log from the command with the -vv flag (eg output from rclone -vv copy /tmp remote:tmp) NA, see above. [] [1684]: Unmounting '/var'. Not sure what that did. I just had this problem and could not kill -9 the process reading from the mounted filesystem. @foobarbecue, normally those are only advisory locks and the man page at least seems to indicate they are only for read/write, not unlink. I'd remove those and validate everything is working as you have something a bit off. http://oletange.blogspot.com/2012/04/umount-device-is-busy-why.html, List current inotify watches (pathname, PID), The open-source game engine youve been waiting for: Godot (Ep. Interestingly, rmdir then gives this message: rmdir: failed to remove '/tmp/tmp.xxxxxxxxxx': Device or resource busy Some program is using a file in the filesystem you're trying to unmount. /dev/sda1 was being mounted via /etc/fstab as /media/myusername. 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. sudo systemctl daemon-reload Out of curiosity, can you try it on another system and preferably another OS, just to see if it changes anything for you? "/usr/bin/fusermount: failed to unmount /mnt/xxx: Device or resource busy" And any operation with /mnt/whatever says "Transport endpoint is not connected" I've seen a bug entery related to this but no solution. This typically happens in directories where I am installing or compiling software libraries. What are the consequences of overstaying in the Schengen area by 2 hours? and. Making statements based on opinion; back them up with references or personal experience. How does a fan in a turbofan engine suck air in? I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. 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. To learn more, see our tips on writing great answers. Would the reflected sun's radiation melt ice in LEO? 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: I've got some samba drives that are being accessed by multiple users daily. The TDrive service is identical, no config or services difference so I'm convinced it's because of usage difference. Why is the article "the" used in "He invented THE slide rule"? Asking for help, clarification, or responding to other answers. When I stopped the nfs-kernel-server I could umount the directory. 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? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Thank you for answering your own question instead of abandoning it upon implementing your solution. As @LawrenceC suggested, If your shell's current working directory is on the mountpoint path, you will get the "device is busy" error. Instead of using lsof to crawl through the file system, just use the total list of open files and grep it. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, Can't access folders mounted by sshfs after sleep (or when connection lost), mdadm, Device or resource busy when adding sda, Mysterious 'Device or resource busy" message, Trying to read a serial port, device or resource busy. rm -rf dirctrl+Crm -rf I want to know, if I remove a drive from my SQL table (effectively taking it offline) how, or even is, there a way to unmount a busy device? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. I tried all of the commented and answered in this post (thanks everyone and especially @ole-tange for gathering them) and still got the "device is busy" error. Super User is a question and answer site for computer enthusiasts and power users. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. Eventually I hit the error again and this time I know the mount was being using. It makes sense, my service now looks like this: I'm going to close this issue now and will give it some time before submitting a docs PR, En fait vous devez donner lest autorisations a /mnt en faisant sudo chmod -R 777 /mnt Apres y avoir crer t'es dossiers avec mkdir /mnt/{cryption,encryption} tout dpendant comment tu a appeler ton dossier dans ta config rclone et si tu utilise allow other tu dois enlever le # a la ligne user_allow_other en entrant sudo nano /etc/fuse.conf. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, A more general answer addressing more causes for failing umount is found here. The device won't be mounted, and when you're finished doing whatever, remove flag and reboot again. 0. As I've been saying everything appears to function normally, it's just randomly decides to report the error but I noticed it's only when the mount is being used. Why the following error appears when using rm -rf * in my current location? Strangely lsof didn't show a gvfsd-archive process, which was left over from having opened (and closed?) How to draw a truncated hexagonal tiling? kill -9 did not work even after fusermount -zu /mount/point or umount -l /mount/point (which worked). Another filesystem mounted on the filesystem you are trying to umount will cause grief. we need to check is any process holding or using the filesystem. [1] It is less convoluted to use mount --move, but that requires mount --make-private /parent-mount-point which has implications. @psusi, that is incorrect. linux . Why does fusermount prepend /home to the path when the resource is busy? Is quantile regression a maximum likelihood method? Thanks for the tip! Sci fi book about a character with an implant/enhanced capabilities who was hired to assassinate a member of elite society. Why does pressing enter increase the file size by 2 bytes in windows. It only takes a minute to sign up. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. is not currently in use, then an initial call to umount2() with this I also had a mount in the mount. 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 Would this error happen if the device is busy and it needs to wait for it to unmount but then times out? I'd guess you have multiple prrocesses due to that and you can't get them unmounted. [] [1684]: Failed to unmount /var: Device or resource busy fusermount: failed to unmount /path: Device or resource busy. 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 are patent descriptions/images in public domain? There is a way to detach a busy device immediately - even if it is busy and cannot be unmounted forcefully. Maybe the scratching helped. But you can simply run. 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. There is a way to detach a busy device immediately (even if it is busy and cannot be unmounted forcefully). Answer. It would be more complex trying to only add the arg if it's non-default. Jordan's line about intimate parties in The Great Gatsby? n Due to the fact that it was created using automated testing, it got mounted many times, hence why I couldn't get rid of it by simply unmounting it once after the tests. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. Good input. Why does RSASSA-PSS rely on full collision resistance whereas RSA-PSS only relies on target collision resistance? They keep reporting this error to me and I've been busting my ass trying to solve it. What you have to do is just execute, Hi, thanks for the hint. How to draw a truncated hexagonal tiling? 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. Exiting the terminal or changing directories to a local share then running fusermount -u solves my problems. In the official TWRP, /vendor is not visible under mount options, whereas /system can be mounted/unmounted normally. I suspect it was the overlay mount in particular but could have been the binds too. Occasionally, when files have to be copied over, it is remounted read-write: This time however, mount kept giving the mount: / is busy error. When running umount /path I get: umount: /path: device is busy. Making statements based on opinion; back them up with references or personal experience. The data is in a consistent state, should you need to physcially disconnect the device. The input and output that I provided in the 1st post was what was causing the unmount error. fuser -v /path gives: which is normal for all unused mounted file systems. The number of distinct words in a sentence. 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. The "restic" mount apparently failed to un-mount automatically. . file access blocked by a lock - how to remove? One nuance, if you are logged in through FTP client, you have to logout in order to successfully unmount folder. After umounting it, my pb. Super User is a question and answer site for computer enthusiasts and power users. Connect and share knowledge within a single location that is structured and easy to search. Your answer helped me sort out a similarly exported NFS share. Ignoring the possibility of destroying data - is it possible to unmount a device that is currently being read? 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". :-). This same behaviour can be achieved by mounting an empty directory with permissions 000 over the directory to be unmounted. My typical solution is to rename or move the parent directory of the file, then come back later in a day or two and the file will have been removed automatically, at which point I am free to delete the directory. @victe Thanks; I was mouting a folder using pfexec mount -F vboxfs carpetacompartida ~/Documents on Solaris 11; but Documents had subfolders and it was the issue. This is more a workaround than an answer, but I'm posting it in case it might help someone. 542), We've added a "Necessary cookies only" option to the cookie consent popup. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today. 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. That's why it show device is busy or filesystem is in use. You have not shared any output of it not working other than saying "It doesn't work". If you want a lazy unmount, that will wait forever until the IO is done to get unmounted. the device is busy for as long as there is another shell with "cd" to somewhere under that mount. 'If you use -uz, it'll unmount and kill the process once the filesystem is not in use: 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. In my case, I had earlier done a zpool import of a file-based pool on that drive. to your account, Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. Because it was in a chroot, lsof and fuser wouldn't find it. Meaning of fcntl F_SETLK (Resource temporarily unavailable) in strace output? Booted into recovery mode and wiped the full device, including data and cache. "Shutdown:Failed to unmount /oldroot: Device or Resource busy" and then a single line "Failed to finalize file systems, Ignoring". 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. 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. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. The program drops privileges where . I kept restarting the service. As I was using redhat, runlevel 4 is marked as "unused/user defined", so I used that one, and run [ 4046.29036] xhdi_hdc 0000:07:00.3 . . failed to unmount /mnt/restic: Device or resource busy, https://github.com/restic/restic/blob/master/CONTRIBUTING.md. 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. Once I exit this bash, then the unmounting and, Hi @DOBRESCU_Mihai! How can I recursively find all files in current and subfolders based on wildcard matching? 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. Did you not see my top post? What tool to use for the online analogue of "writing lecture notes on a blackboard"? What's the linux equivalent? (Please give as answer a simple "unlock this" method, and not complete articles like this one. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. Sign in I had to unmount it the same number of times that I had run the mount command, i.e. 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. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Could very old employee stock options still be accessible and viable? It's gotta be because the drive is randomly in use. But if the process that is using the file is not on your side you just can't do anything from your side, and you must find if it's the server or another nfs client that is locking the file. Share some output rather than it doesn't work. UNIX is a registered trademark of The Open Group. Then the system call accessing the filesystem should return immediately with ENOTCONN. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. In my case I was trying to modify the LVM as I wanted to make the /var partition bigger, so I needed to umount it. . Could you check your logs just to confirm? everything checks out. lsof could not find any open files but, Yep, worked for me, too. These commands can disrupt a running process, cause data loss OR corrupt open files. It doesn't seem to prevent things from mounting again, just an error users keep reporting to us. NFS mounts.) These don't show up in the fuser/lsof listing, and can prevent umount from succeeding. This flag cannot be specified with either systemctl stop path-to-mountpoint.automount. That's not helpful. 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 '
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