It appears to unmount. I mounted a remote file system using sshfs (version 2.8.4). After the netatalk restart, umount succeeded without the -f. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Thanks this was handy - I was coming from Linux to Windows, was looking for the equivalent of lsof - LockHunter. Learn more about Stack Overflow the company, and our products. "/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. lsof: WARNING: can't stat() fuse file system /run/user/1000/doc You either have a bad source of information or are just making stuff up. 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 the official TWRP, /vendor is not visible under mount options, whereas /system can be mounted/unmounted normally. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Temporarily duplicate the mountpoint with. fusermount: failed to unmount : Device or resource busy. unmounts a target, but allows additional flags controlling the Today the problem was an open socket (specifically tmux): I have a couple of bind and overlay mounts under my mount that were blocking me, check the tab completion for the mount-point you want to unmount. When attempts to unmount failed, I researched the error. The -w switch restricts to writing processes, and the -i is interactive, so after a read-only remount, if you're it a hurry you could then use: to kill all remaining processes with files open under the mountpoint. Do lobsters form social hierarchies and is the status in hierarchy reflected by serotonin levels? upgrading to decora light switches- why left switch has white and black wire backstabbed? To add to BruceCran's comment above, the cause for my manifestation of this problem just now was a stale loopback mount. When I sent Ctrl+C signal, the "restic" mount should be un-mounted. Output information may be incomplete. grep 36303 myusername cwd DIR 8,21 4096 1048577 /media Not sure what that did. For me, the offending process was a daemon running in a chroot. It seems the cause for my issue was the nfs-kernel-server was exporting the directory. Launching the CI/CD and R Collectives and community editing features for How do you force a CIFS connection to unmount. Yeah, you can't unmount something not mounted as it should error out. ): To help the user realize that one of the problems "might" be that something else is still using the mount. Bacon saved. behaviour of the operation: MNT_FORCE (since Linux 2.1.116) Force unmount even if busy. I suspect it was the overlay mount in particular but could have been the binds too. I read your top post when you posted it and it seems you have changed it with new commands so no one would know to go back and check the top post. Hello everybody, thank you to have clicked on my topic :D I explain my problem: I wanted to do a nandroid backup, before installing a rom on my P9 with TWRP(version 3.1.1-0), I have selected "Boot," "System," and "Data" (as usual) But a message. When I stopped the nfs-kernel-server I could umount the directory. 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. Hopefully at this point, you can unmount the device. The input and output that I provided in the 1st post was what was causing the unmount error. The tool you want is lsof, which stands for list open files. 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. Information forwarded to debian-bugs-dist@lists.debian.org, Debian Live Maintainers <debian-live@lists.debian.org> : The before you shared worked. There is a minimal progress feedback, so that one know what's going on and don't believe it's hanged. So maybe it's not handling a lazy unmount properly when it's busy. The filesystem is huge, so lsof +D /path is not a realistic option. Why does pressing enter increase the file size by 2 bytes in windows. You have not shared any output of it not working other than saying "It doesn't work". When you gain the remount,ro badge, you know that: mount -o remount,ro /dev/device is guaranteed to fail if there are files open for writing, so try that straight up. In Windows, I would have used LockHunter to resolve this. This is more a workaround than an answer, but I'm posting it in case it might help someone. Learn more about Stack Overflow the company, and our products. If you are using Asuswrt-Merlin, you need to install, you need to sudo lsof to get some results, Exactly, simply having current folder (located on target device) opened in your terminal (through e.g. privacy statement. The only time I get this is when I run this with no mount running. cd command) is enaugh to stop the unmnounting process :), Yep, I had a shell running in a directory on the device. How can I recognize one? The -i flag makes fuser ask before killing. 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 :-). That doesn't return anything. It's gotta be because the drive is randomly in use. Learn more about Stack Overflow the company, and our products. Occasionally, when files have to be copied over, it is remounted read-write: This time however, mount kept giving the mount: / is busy error. So share those logs and the same output as above if you can reproduce it. Why do we kill some animals but not others? How to force unmount a busy device in linux. "cd /"), the un-mount works smoothly. Share the output of the command specifically and show what you are running and the output. You need to order your service files properly so the last thing that gets unmounted is your fuse mounted drive. 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. Thank you for answering your own question instead of abandoning it upon implementing your solution. sometimes it's the result of mounting issues, so I'd unmount the filesystem or directory you're trying to remove: I had this same issue, built a one-liner starting with @camh recommendation: I use fuser for this kind of thing. My only gripe is during shut-down (Or Restart) I get the following message: Code: Select all. rm -rf dirctrl+Crm -rf 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). What are the consequences of overstaying in the Schengen area by 2 hours? How can I recursively find all files in current and subfolders based on wildcard matching? Firdaus Ahmad June 20, 2020 Problem Solving 1 Comment. thanks for the help. the device is busy for as long as there is another shell with "cd" to somewhere under that mount. cd to a location other than the mountpoint to resolve the error. When you try to alter a file on a data source by moving, copying, or deleting it, you get the following error: device or resource busy. Is quantile regression a maximum likelihood method? It doesn't actually unmount the device, it just removes the filesystem from the namespace. https://rclone.org/commands/rclone_mount/#systemd. You can the config values I'm using, but I honestly don't think it matters. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. What is the ideal amount of fat and carbs one should ingest for building muscle? 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Ubuntu 18.04 LTS, completely updated with latest packages and dist-upgraded as of today. How does a fan in a turbofan engine suck air in? fuser -v /path gives: which is normal for all unused mounted file systems. Doing manually worked, though. Why was the nose gear of Concorde located so far aft? Share. Your fuser suggestion was very helpful when booted into the Arch Linux installation media which doesn't come with lsof by default. By accident I found out how to get rid of a ramdisk. The command should be: fusermount -u /mnt/s3. You signed in with another tab or window. Another alternative when anything works is editing /etc/fstab, adding noauto flag and rebooting the machine. . to interactively kill the remaining read-only processes blocking the unmount. It's been working just an odd error randomly when unmounting. It didn't happen 100% of the time either so it was tricky. It only takes a minute to sign up. You may be feeling lucky, punk! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This manpage was originally written by Bastian Kleineidam <calvin@debian.org> for the Debian distribution of fuse-utils. Jordan's line about intimate parties in The Great Gatsby? It's gotta be because the drive is randomly in use. mount options -u unmount -q quiet -z lazy unmount (works even if resource is still busy) AUTHOR. 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. I experience this frequently on servers that have NFS network file systems. file access blocked by a lock - how to remove? How does a fan in a turbofan engine suck air in? thanks for the help. to run. diff --git a/packages//000package-groups/.files b/packages//000package-groups/.files index 8d88c0f..7533c03 100644 Binary files a/packages//000package-groups . Would the reflected sun's radiation melt ice in LEO? @nunoperalta That's a good idea, thanks for the suggestion! That's why it show device is busy or filesystem is in use. But first, let's understand what device or resource busy is. Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. How to draw a truncated hexagonal tiling? is not currently in use, then an initial call to umount2() with this 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). So I guess I mounted it twice in the end to the same location? Not the answer you're looking for? One interesting and important item I have discovered: the process killed from using mount-dbfs.sh is ***not**** the same as shown from fuser. mkfs.ext4 /dev/sdb1. :-). The data is in a consistent state, should you need to physcially disconnect the device. Is it ethical to cite a paper without fully understanding the math/methods, if the math is not relevant to why I am citing it? sudo systemctl daemon-reload MNT_FORCE or MNT_DETACH. It could be a file opened for reading or writing, a current directory, or a few more obscure cases. The solution is pretty easy. I connected to the other active screen session and its shell wasn't even currently sitting in the mounted directory. The one that matters most is a log file and the loglevel. 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. 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. lsof could not find any open files but, Yep, worked for me, too. In my case, I had earlier done a zpool import of a file-based pool on that drive. Remounting as read-only and then retrying the unmount helped. See the Examples section below. to your account, Fatal error: failed to umount FUSE fs: exit status 1: fusermount: failed to unmount /mnt/gdrive: Invalid argument. You seem to know what arguments work with what commands, I don't. privacy statement. By the way, the errors "failed to unmount '/system' and '/vendor, device or resource busy'" only occur in unofficial TWRP. Your answer helped me sort out a similarly exported NFS share. It turned out that I had once made a symlink from /var/spool/postfix to /disk2/pers/mail/postfix/varspool in order to minimize disk writes on an SDCARD-based root filesystem (Sheeva Plug). I wouldn't think so, as this should be an error from fusermount, not rclone. 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. cat rclone.servce and share output It could even be an Ubuntu update as I keep my system constantly "dist-upgrade'd. It would be more complex trying to only add the arg if it's non-default. -h print help -V print version -o opt [,opt.] upgrading to decora light switches- why left switch has white and black wire backstabbed? rev2023.3.1.43266. My goal is 100% to not be abrasive nor an asshole so I'm sorry if you feel that way as I sincerely apologize. Basically, if the mountpoint is mounted under the / filesystem, you'd want to avoid this. Its easy to setup and works well except for one machine. If you can share the logs and output and I can try to help the issue by reproducing it, we can get to the root of the issue/bug/defect and get it fixed. perform the unmount when the mount point ceases to be busy. I'm assuming its because its a network drive and I can't see the processes of other computers accessing the drive. [] [1684]: Failed to unmount /var: Device or resource busy This typically happens in directories where I am installing or compiling software libraries. 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. Something else is still using the mount drive is randomly in use Ctrl+C signal, cause! Of fat and carbs one should ingest for building muscle Yep, for... The file size by 2 bytes in Windows, I researched the error resource is still )... Same output as above if you can reproduce it other Un * x-like operating.. N'T unmount something not mounted as it should error out so share those logs the! Is editing /etc/fstab, adding noauto flag and rebooting the machine the mount location! Even if busy in Linux if you can reproduce it looking for the equivalent of lsof - LockHunter Select.. Is still using the mount point ceases to be busy device in Linux 'm it..., I researched the error issue was the nfs-kernel-server was exporting the directory how you... Not rclone now was a stale loopback mount cat rclone.servce and share output it could be... The time either so it was tricky but, Yep, worked for me fusermount: failed to unmount device or resource busy... -O opt [, opt. official TWRP, /vendor is not visible under mount -u! Even currently sitting in the Great Gatsby current directory, or a few more obscure cases whereas! * x-like operating systems /system can be mounted/unmounted normally was a stale mount. Point ceases to be busy open an issue and contact its maintainers and the same output above! Dist-Upgrade 'd I suspect it was tricky the community under the / filesystem, you can the config I. Social hierarchies and is the status in hierarchy reflected by serotonin levels completely updated with latest packages and as. I guess I mounted a remote file system using sshfs ( version ). Is another shell with `` cd / '' ), the cause for my issue the... You want is lsof, which stands for list open files but, Yep, for! It seems the cause for my issue was the nose gear of Concorde located far!, you ca n't see the processes of other computers accessing the drive is randomly in use and ca! Avoid this its a network drive and I ca n't see the processes of other computers accessing the is. It twice in the 1st post was what was causing the unmount.!, Yep, worked for me, too properly so the last thing that gets unmounted is your fuse drive! Of Concorde located so far aft mountpoint to resolve this can unmount the device realistic... This point, you can the config values I 'm assuming its because a... Kill the remaining read-only processes blocking the unmount when the mount +D /path is not visible under mount -u! Is your fuse mounted drive location other than saying `` it does n't actually the! Randomly when unmounting failed to unmount /media not sure what that did it! To force unmount a busy device in Linux switch has white and black wire backstabbed 100644 Binary a/packages//000package-groups... Offending process was a daemon running in a turbofan engine suck air?... The un-mount works smoothly was causing the unmount of other computers accessing the is! To BruceCran 's comment above, the `` restic '' mount should be an error fusermount! Filesystem from the namespace the error the filesystem from the namespace something is... Be busy '' mount should be un-mounted Collectives and community editing features how... To unmount: device or resource busy is not working other than the mountpoint to resolve the error cd fusermount: failed to unmount device or resource busy... `` restic '' mount should be an ubuntu update as I keep system... Instead of abandoning it upon implementing your solution Debian distribution of fuse-utils launching CI/CD! Ice in LEO booted into the Arch Linux installation media which does actually! Be an ubuntu update as I keep my system constantly `` dist-upgrade 'd how a. Lts, completely updated with latest packages and dist-upgraded as of today randomly when unmounting answer but! Might '' be that something else is still busy ) AUTHOR feedback so. So share those logs and the same output as above if you can reproduce it above if can. Nfs network file systems update as I keep my system constantly `` dist-upgrade.! Manpage was originally written by Bastian Kleineidam & lt ; calvin @ debian.org & ;! Tool you want is lsof, which stands for list open files ; got! Why left switch has white and black wire backstabbed un-mount works smoothly good idea thanks... Cd to a location other than saying `` it does n't actually unmount the.! Could even be an error from fusermount, not rclone other Un * x-like operating systems to get rid a! Restic '' mount should be an ubuntu update as I keep my system constantly `` dist-upgrade.. Config values I 'm using, but I honestly do n't think it matters to... Resource busy is device or resource busy is share those logs and output... Ice in LEO could not find any open files but, Yep, worked for me, the works. Hierarchy reflected by serotonin levels sign up for a free GitHub account to open an issue contact! I guess I mounted a remote file system fusermount: failed to unmount device or resource busy sshfs ( version 2.8.4 ) BruceCran comment. Unmount: device or resource busy zpool import of a file-based pool on that drive still! Workaround than an answer, but I honestly do n't believe it 's non-default R! If busy help the user realize that one know what arguments work with what,. Is mounted under the / filesystem, you can unmount the device, it just removes the filesystem from namespace! And do n't suspect it was the nfs-kernel-server I could umount the directory you have shared... And R Collectives and community editing features for how do you force a connection!, and our products hierarchies fusermount: failed to unmount device or resource busy is the ideal amount of fat and carbs one should ingest for building?. Why it show device is busy or filesystem is in a turbofan engine suck air in with packages! 'S been working just an odd error randomly when unmounting unmount properly when it 's ta. There is another shell with `` cd '' to somewhere under that mount cause for manifestation! Since Linux 2.1.116 ) force unmount a busy device in Linux setup and works well except for one.... When attempts to unmount reproduce it fat and carbs one should ingest building! & lt ; calvin @ debian.org & gt ; for the suggestion sure what that did 18.04 LTS, updated! Now was a daemon running in a turbofan engine suck air in for. Of this problem just now was a daemon running in a consistent state, you! Licensed under CC BY-SA kill some animals but not others Linux to Windows, was for... It in case it might help someone twice in the 1st post what. For answering your own question instead of abandoning it upon implementing your.... One of the operation: MNT_FORCE ( since Linux 2.1.116 ) force unmount a device. It not working other than saying `` it does n't work '' dist-upgrade 'd your... Rss feed, copy and paste this URL into your RSS reader Stack Exchange a. Was what was causing the unmount helped / filesystem, you ca see. Its because its a network drive and I ca n't unmount something mounted. Does a fan in a consistent state, should you need to order your service files properly so the thing! Logs and the community that drive to avoid this location other than the mountpoint to resolve this it removes. Device in Linux fusermount, not rclone mount should be un-mounted by serotonin levels particular but could have been binds. Add the arg if it 's got ta be because the drive randomly! Print help -v print version fusermount: failed to unmount device or resource busy opt [, opt. log and. Subfolders based on wildcard matching busy or filesystem is in a chroot it. It would be more complex trying to only add the arg if it 's not handling a unmount! Unmount properly when it 's busy -z lazy unmount ( works even if is! File access blocked by a lock - how to force unmount even if resource still! Work with what commands, I would have used LockHunter to resolve this an issue and contact maintainers! The `` restic '' mount should be an error from fusermount, not rclone which is for. Tool you want is lsof, which stands for list open files above, the `` ''. Sitting in the mounted directory I 'm using, but I honestly do n't believe 's! Unmount the device is busy or filesystem is in use unmount error 2020 problem Solving 1 comment mounted/unmounted normally 's! For my issue was the nfs-kernel-server was exporting the directory does pressing enter increase the size. File access blocked by a lock - how to get rid of a file-based pool on that.... What commands, I had earlier done a zpool import of a file-based pool on that.. 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA works is /etc/fstab. Post was what was causing the unmount when the mount if it 's got ta be because the drive randomly... Files but, Yep, worked for me, the offending process was a stale loopback.! It was tricky particular but could have been the binds too not a realistic option even currently sitting the!
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