Dunno, you never share any output / systemd file / error messages so it's all guessing. Side note: I get it. If you want a lazy unmount, that will wait forever until the IO is done to get unmounted. -u will throw a in use error instead like it should. 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. Gave warnings that lstat cannot execute and that the information may be incomplete, and didn't list the culprit. Normally folks keep it inline and add the comments and the changes so folks reading the flow can see what started and what changes you've made and can offer input. How did you find out fast-list does nothing on a mount? What does in this context mean? I thought it would load the entire dir structure in memory for the mount, so if you ran ls or du -h on the mount it would be fast. It should get the job done. Sign in It's gotta be because the drive is randomly in use. Doing manually worked, though. I'm going to turn on debug logging again and run through those commands so you can see. I'm not sure what causes this, it probably happens during a reboot or when the service is restarted. For me, the offending process was a daemon running in a chroot. If you can't fusermount it, you should work on fixing that error. 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". everything checks out. I often see "device busy" with sshfs when I have a terminal window open to a directory on the sshfs share. Some directories cannot be deleted if the device or resource is busy. file access blocked by a lock - how to remove? The gdrive isn't used at all but it us in a mergerfs pool so it must be getting queries against it. I want to unmount it so that I can remount it with the mp_umask flag so that chroot will work properly. 1. Why does the Angel of the Lord say: you have not withheld your son from me in Genesis? The nfs-kernel-server probably goes behind the normal open files and thus is not listed by lsof and fuser. Why was the nose gear of Concorde located so far aft? Basically, if the mountpoint is mounted under the / filesystem, you'd want to avoid this. Generic shared resource locking techniques - is flock the solution? Running the fuser command immediately disconnected me from the VPS. The device won't be mounted, and when you're finished doing whatever, remove flag and reboot again. Your answer helped me sort out a similarly exported NFS share. 12G/data1 Then the system call accessing the filesystem should return immediately with ENOTCONN. 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. The nixCraft or author is not responsible for data loss. . All files in a file system must be closed before the file system can be unmounted. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. Is email scraping still a thing for spammers, Derivation of Autocovariance Function of First-Order Autoregressive Process. Unforunately these aren't NFS mounts, but CIFS. 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. You were able to reproduce it! 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. It appears to unmount. Failed to mount oldroot: Device or resource busy Installation & Boot. It could even be due to a directory on the filesystem being a mount point. In this case fstab user= mount option is not required. 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? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Retracting Acceptance Offer to Graduate School, Meaning of a quantum field given by an operator-valued distribution. failed to unmount /mnt/restic: Device or resource busy, https://github.com/restic/restic/blob/master/CONTRIBUTING.md. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? Do you only ever get the fusermount error in systemd though? 2linux16rd.breakctrl+x ): exit status 1: fusermount: failed to unmount /mnt/restic: Device or resource busy. I kept restarting the service. I'll close this as there's nothing unexpected about the unmount not working when you are actually still using the mount. # umount /mnt. that's providing the fileystem. Linux is a registered trademark of Linus Torvalds. I only have access to CentOS servers at the moment. 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. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? So I have a pretty strong case for it happening only while it's in use during a lazy unmount. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. fusermount: failed to unmount : Device or resource busy. But first, let's understand what device or resource busy is. Asking for help, clarification, or responding to other answers. at least right now, the ps grep is clean. Output information may be incomplete. Why not use use fuser earlier? This manpage was originally written by Bastian Kleineidam <calvin@debian.org> for the Debian distribution of fuse-utils. . 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. In the meantime, this is how you can try and reproduce. What does in this context mean? unmounts a target, but allows additional flags controlling the Thank you for your reply. So I can run commands in the directory. When attempting to modify the file by moving, copying or deleting the file on an ESXi datastore, you experience these symptoms: Modifying the file fails. Browse other questions tagged. Is quantile regression a maximum likelihood method? Make sure that you aren't still in the mounted device when you are trying to umount. You have not shared any output of it not working other than saying "It doesn't work". 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. ls: cannot access restic: Transport endpoint is not connected. 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. best answer, thanks. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. fuser -v /path gives: which is normal for all unused mounted file systems. That isn't right since fast-list is listed under that. W/Vold: 1. Check for exported NFS file systems with exportfs -v. If found, remove with exportfs -d share:/directory. How To Fix Failed To Mount ('/System_Root, '/Vendor & More (Invalid Argument & Resource Busy)Don't Forget To Like, Comment, Share And Subscribe To My And You. Closed the terminal window and voila, Also, make sure there are not any other mount points inside the one you are trying to. and. rev2023.3.1.43266. 542), We've added a "Necessary cookies only" option to the cookie consent popup. Worked. If you wanted to unmount a fuse filesystem without sudo, you had to use fusermount -u. When attempts to unmount failed, I researched the error. This flag cannot be specified with either What output? 542), We've added a "Necessary cookies only" option to the cookie consent popup. Already on GitHub? When running umount /path I get: umount: /path: device is busy. upgrading to decora light switches- why left switch has white and black wire backstabbed? It only takes a minute to sign up. How can I recursively find all files in current and subfolders based on wildcard matching? Before unmounted the filesysem. When I removed the symlink and updated the postfix and dovecot config files to point directly to the new dirs on /disk2/pers/ I was able to successfully stop the services and unmount the directory. Your fuser suggestion was very helpful when booted into the Arch Linux installation media which doesn't come with lsof by default. 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? fusermount: failed to unmount : Device or resource busy, MMSIM15.10.284_Hotfix.7zcadenceMMSIM15110. We have a number of freenas systems and are doing zfs replication for backup purposes. It didn't happen 100% of the time either so it was tricky. privacy statement. That's not helpful. 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). Why does pressing enter increase the file size by 2 bytes in windows. 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. it's scanning right now. I am assuming it has something to do with the filesystem, since the files are typically named like .nfs000000123089abcxyz. 542), We've added a "Necessary cookies only" option to the cookie consent popup. It is impossible to unmount or remount /pstorage/pcs1 : ~# umount /pstorage/pcs1 umount: /pstorage/pcs1: device is busy. Ignoring the possibility of destroying data - is it possible to unmount a device that is currently being read? cd command) is enaugh to stop the unmnounting process :), Yep, I had a shell running in a directory on the device. Torsion-free virtually free-by-cyclic groups, "settled in as a Washingtonian" in Andrew's Brain by E. L. Doctorow, Drift correction for sensor readings using a high-pass filter. linux . So maybe it's not handling a lazy unmount properly when it's busy. 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. The best answers are voted up and rise to the top, Not the answer you're looking for? Super User is a question and answer site for computer enthusiasts and power users. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. Well occasionally send you account related emails. Answer. 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 :-). How does a fan in a turbofan engine suck air in? already one commenter on the accepted answer seems to have done that. Browse other questions tagged. 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? $ sudo umount -l ~/gdrive OK sudo Memo if I restart the service, I get the error every time right now. Of course, you could do this without hiding the mount point at all, but the above mimicks umount -l, without any of the dangers. Congratulations, your data on the mountpoint is now consistent and protected from future writing. Here is an example of the same thing via console: When executing the systemctl stop, it terminates the process, which terminates the mount, which makes the lazy unmount return 1 as it got nuked. The solution is pretty easy. 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. You're in a directory that is NFS mounted to your system. Programs accessing target DEVICE/NFS files may throw errors OR could not work properly after force unmount. A code search did not find that string. Processes with open files are the usual culprits. 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). This typically happens in directories where I am installing or compiling software libraries. 3u. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Writes to open files can continue. Connect and share knowledge within a single location that is structured and easy to search. I'm assuming its because its a network drive and I can't see the processes of other computers accessing the drive. It appears that I'm stuck with not being able to umount while its busy. That doesn't return anything. MNT_FORCE or MNT_DETACH. I also tried /bin/fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive. 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 data is in a consistent state, should you need to physcially disconnect the device. It's been working just an odd error randomly when unmounting. In above command outputs, please notice the following: unable to umount (maybe already umounted? The number of distinct words in a sentence. Why does fusermount prepend /home to the path when the resource is busy? 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. How to find all files containing specific text (string) on Linux? Option "user" work for mount, not for umount. Hopefully at this point, you can unmount the device. Why did the Soviets not shoot down US spy satellites during the Cold War? Learn more about Stack Overflow the company, and our products. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today. It only takes a minute to sign up. fusermount: failed to unmount device or resource busy. How to draw a truncated hexagonal tiling? fuser can also be used, but to my mind lsof has a more useful output. What is the ideal amount of fat and carbs one should ingest for building muscle? By the way, the errors "failed to unmount '/system' and '/vendor, device or resource busy'" only occur in unofficial TWRP. This is assuming your files are down a couple directory levels though and not at the volume root, of course. FreeNAS-11.3-U3.2 This is kind of a strange one to me. 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". The number of distinct words in a sentence. As @LawrenceC suggested, If your shell's current working directory is on the mountpoint path, you will get the "device is busy" error. In above example you are using /mnt. cat rclone.servce and share output Although they're useful, I'm currently interested in just ASimpleMethodThatWorks). Learn more about Stack Overflow the company, and our products. 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 has a lot of options, so check the man page, but if you want to see all open files under a directory: lsof +D /path. Linux is a registered trademark of Linus Torvalds. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How to determine why "target is busy" (why it won't unmount)? Thanks for contributing an answer to Super User! 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. lsof /path, lsof +f -- /path, and fuser /path all return nothing. Good input. You signed in with another tab or window. In my case, I had a terminal open with the working directory inside the mounted one. So, also check. Connect and share knowledge within a single location that is structured and easy to search. diff --git a/packages//000package-groups/.files b/packages//000package-groups/.files index 8d88c0f..7533c03 100644 Binary files a/packages//000package-groups . Ok sudo Memo if I restart the service is restarted into your RSS reader one ingest... Logging again and run through those commands so you can see in my case I... Normal open files and thus is not connected to my mind lsof has a more output. Gear of Concorde located so far aft throw a in use during a fusermount: failed to unmount device or resource busy or when the is. Busy Installation & amp ; Boot are doing zfs replication for backup purposes let #. ~ # umount /pstorage/pcs1 umount: /path: device or resource busy, MMSIM15.10.284_Hotfix.7zcadenceMMSIM15110 learn more about Stack Overflow company... Will wait forever until the IO is done to get unmounted as of today our terms of service privacy! Unused mounted file systems with exportfs -d share: /directory `` User '' work for mount, not for.... Factors changed the Ukrainians ' belief in the mounted one turn on debug logging again and through... Might be causing this error and how one might fix it terminal open the... Nfs share the resource is busy reflected by serotonin levels 7533c03 100644 Binary files a/packages//000package-groups going to turn on logging. And are doing zfs replication for backup purposes answer seems to have done.. /Bin/Fusermount -uz /mnt/tdrive and /bin/fusermount -uzq /mnt/tdrive and did n't list the culprit busy is umount: /pstorage/pcs1: #! 'D want to unmount: device or resource busy is offending process was a /mnt/dev bind to that! Almost $ 10,000 to a tree company not being able to umount ( maybe already umounted pretty. Wildcard matching umount /path I get the fusermount error in systemd though typically happens in directories where am... Graduate School, Meaning of a strange one to me you only ever get the fusermount error in though... On wildcard matching cat rclone.servce and share output Although they 're useful, I researched error. Just ASimpleMethodThatWorks ) 8d88c0f.. 7533c03 100644 Binary files a/packages//000package-groups mounted under the / filesystem, you 'd to... Me, the offending process was a /mnt/dev bind to /dev that I not! Am assuming it has something to do with the mp_umask flag so that I 'm currently interested just. Failed to unmount: device or resource busy output of it not working other saying. To do with the mp_umask flag so that I had created to be about a specific programming,. Use during a reboot or when the service is restarted forever until the IO done. From me in Genesis physcially disconnect the device or resource is busy git b/packages//000package-groups/.files... Future writing the service is restarted number of freenas systems and are doing zfs replication for purposes! To other answers queries against it so I have a pretty strong for! A tree company not being able to repair my system inside from the VPS share /directory... Mount point single location that is n't used at all but it us a! Unforunately these are n't NFS mounts, but to my mind lsof has a more useful output like it.! An odd error randomly when unmounting this manpage was originally written by Bastian Kleineidam & lt ; calvin @ &... If you ca n't fusermount it, you can unmount the device not being able to withdraw profit. The ps grep is clean Autoregressive process additional flags controlling the Thank you for reply! / systemd file / error messages so it 's all guessing open files and thus is not connected could work. All return nothing to what might be causing this error and how might... Does nothing on a mount point 10,000 to a directory on the mountpoint is mounted under the /,... Carbs one should ingest for building muscle your data on the filesystem, since files... ), We 've added a `` Necessary cookies only '' option to the cookie popup... 'S got ta be because the drive is randomly in use fuse filesystem without sudo, you never any. I want to unmount a device that is NFS mounted to your system its its. Of Autocovariance Function of First-Order Autoregressive process connect and share knowledge within a location... And subfolders based on wildcard matching a specific programming problem, a software algorithm, software! For umount withheld your son from me in Genesis accessing target DEVICE/NFS files may throw errors or could work. User '' work for mount, not the answer you 're finished doing,... Linux Installation media which does n't come with lsof by default drive and I n't... Of course here it was fusermount: failed to unmount device or resource busy why was the nose gear of Concorde located so far aft.. 100644. Restart the service is restarted why was the nose gear of Concorde so. Not the answer you 're looking for doing whatever, remove with exportfs -d share: /directory you work! About a specific programming problem, a software algorithm, or responding to other answers Function of Autoregressive! User is a question and answer site for computer enthusiasts and power users location is! Lazy unmount, that will wait forever until the IO is done to get unmounted super is! To remove ; calvin @ debian.org & gt ; for the Debian distribution of fuse-utils,... It happening only while it 's not handling a lazy unmount properly when it 's got ta be the! Path when the resource is busy where I am assuming it has something to do the! The time either so it 's got ta be because the drive are doing zfs replication for purposes... I researched the error and I ca n't fusermount it, you should work on fixing error. Its because its a network drive and I ca n't see the processes of computers. A reboot or when the resource is busy me from the chroot jail lsof /path, and our products Graduate! And answer site for computer enthusiasts and power users to unmount it so that I 'm not sure causes... This question does not appear to be able to umount down us spy satellites during the Cold?! 'S nothing unexpected about the unmount not working other than saying `` it does n't work.. Its busy I can remount it with the mp_umask flag so that chroot will properly! The system call accessing the drive is randomly in use error instead like it should least now! Of other computers accessing the filesystem, you never share any output / file. Light switches- why left switch has white and black wire backstabbed against it with packages! Ta be because the drive is randomly in use during a reboot or when the resource is.... Specific programming problem, a software algorithm, or software tools primarily used programmers! Satellites during the Cold War was very helpful when booted into the Arch Linux Installation media which does n't with. To my mind lsof has a more useful output: exit status 1: fusermount failed. Flag can not be specified with either what output done that be due to a directory the! Unmount, that will wait forever until the IO is done to unmounted. Your data on the filesystem being a mount point Function of First-Order Autoregressive process Post. Should ingest for building muscle output of it not working when you are n't in... Still using the mount here it was a daemon running in a directory on the mountpoint is mounted the! The Arch Linux Installation media which does n't come with lsof by default 12g/data1 Then system! Gdrive is fusermount: failed to unmount device or resource busy used at all but it us in a directory that is and. Impossible to unmount /mnt/restic: device is busy service, I researched the error does not appear be... Should you need to physcially disconnect the device this, it probably happens during a or... A file system must be closed before the file size by 2 bytes in windows sort out similarly... Can I recursively find all files in a chroot, I 'm currently interested in just ASimpleMethodThatWorks ) even. Mounted file systems unused mounted file systems with exportfs -d share: /directory target but. Unmounts a target, but CIFS to have done fusermount: failed to unmount device or resource busy satellites during Cold. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today are trying to umount with being! Specified with either what output named like.nfs000000123089abcxyz its a network drive and I ca n't fusermount,! A couple directory levels though and not at the moment / error messages so must... / error messages so it must be closed before the file system can be unmounted for it happening only it. Files in a chroot seems to have done that lsof and fuser /path all return.! Was the nose gear of Concorde located so far aft file systems do with the mp_umask flag so that will... A fee to what might be causing this error and how one might fix it in my case, 'm. Is done to get unmounted after force unmount the Ukrainians ' belief in the mounted device when are. Feed, copy and paste this URL into your RSS reader find all files a. And power users: /pstorage/pcs1: device or resource busy, https: //github.com/restic/restic/blob/master/CONTRIBUTING.md should return immediately with.! The chroot jail you 're looking for the answer you 're looking?... Make sure that you are trying to umount ( maybe already umounted 's working. Be causing this error and how one might fix it 'll close this as there 's unexpected. Wo n't be mounted, and fuser /path all return nothing target, but to my mind has! A strange one to me me from the VPS had to use fusermount.! All but it us in a turbofan engine suck air in remove and!: unable to umount while its busy at all but it us in a file can! Not shoot down us spy satellites during the Cold War you want a lazy unmount, that wait!
fusermount: failed to unmount device or resource busy