Questions tagged [bind-mount]

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Bind mount the Docker socket into Alpine chroot?

I configured an OpenWrt OS on my FriendlyElec NanoPi R6s but decided to add an Alpine chroot to run other stuff in that OpenWrt doesn't have and to isolate it a little bit away; it even lives on it's ...
Ingwie Phoenix's user avatar
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1 answer
139 views

Do bind mounts from NFS path create additional connections to the underlying NFS server?

I am designing the following setup: NFSv3 server Centos7 Client The client mounts an NFS share from the server to /mnt/nfs_share Now I want to create many read only bind mounts from that mount to ...
user48240's user avatar
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79 views

EOVERFLOW when opening any file for writing

I'm writing a custom container engine. When I attempt to open any file for writing somewhere in the container (as long as that place is writeable, permissions-wise), I get an EOVERFLOW error (Value ...
pxeger's user avatar
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Immediately after 'fusermount -u; umount' sporadically fails with Target is Busy

I've a script pre-condition: lsof /dir1 clear #/bin/bash ... fusermount -u /dir1/dir2 # unbind dir2 umount /dir1 # sporadically fails with 'Target is Busy' ... Why do I get ...
participant's user avatar
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Mount bind point to incorrect NVMe device after power off/on device

I am developing an all-flash storage application. I found that mount bind has strange behavior on NVMe device power off/on. Distro: SUSE Linux Enterprise Server 15 SP4 5.14.21-150400.24.46-default ...
Bofan Liu's user avatar
1 vote
0 answers
151 views

Differences between overloay and underlay in Apptainer

I'm trying to understand the differences between the two ways of bindings filesystems in Apptainer configuration. The documentation can be found here, but here are the confusing parts: enable overlay:...
Shan-x's user avatar
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Check if Docker volume-mounted path is on HDD or SSD?

In Linux, it is relatively easy to determine whether a drive is an HDD or SSD. However, is there a method to achieve the same result when you only have a path? I need to check, from within a Docker ...
Maestro's user avatar
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3 votes
4 answers
305 views

Why can I still write to /dev/null even after /dev is mounted read-only?

I was surprised to discover that I can still write to /dev/null even after remounting /dev to be read-only. Here is a demonstration: # echo foo > /dev/null # echo foo > /dev/foo # mount -o ...
mpb's user avatar
  • 1,611
1 vote
0 answers
178 views

Ubuntu NFS mount bind failing

This should be a rather simple question, but all my googlefu has failed me so far. I have an nfs server with a share mounted to my local machine in dir /share/ (rw,sync,no_subtree_check) from there I ...
Graydon Neill's user avatar
2 votes
0 answers
1k views

Docker cannot mount to a directory from nfs share

I have an nfs share setup from my NAS with the docker host. 10.237.1.128:/mnt/storage/media 15T 47G 15T 1% /storage I am trying to mount a container in /storage/media/library but I get. ...
Tom's user avatar
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Can lsof display the real path instead the bind mount path of a docker container?

I try to find out which files are in use in a specific path: lsof /mnt/cache This returns for example: COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME Plex\x20S 338 nobody cwd ...
mgutt's user avatar
  • 477
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Slackware(64) 14.2 + Xephyr using chroot, umount partitions

This Exact Same Question i first time i do was ib -> https://www.linuxquestions.org/questions/showthread.php?p=6366697#post6366697 i need improve my script : For close the Xephyr window ...
Inukaze's user avatar
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1 vote
2 answers
421 views

Can a file that's being supplied by bind-mount support overwriting via `mv`?

Suppose I bind-mount file a atop file b... $ echo 'line 1' > a $ touch b $ mount --bind a b The initial file contents will be mirrored at both paths, as expected: $ cat a line 1 $ cat b line 1 ...
Maxpm's user avatar
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1k views

What is a move mount and how is it different from a bind mount?

I've been using bind mounts for 20 years, they're pretty simple. Now I see there is also a move mount, The move operation Move a mounted tree to another place (atomically). The call is: mount --move ...
Evan Carroll's user avatar
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Show bind mounts as a separate filesystem

I'm designing something that uses a lot of bind mounts. However, bind mounts show up as the same type as the host filesystem. This is bad as backup programs (like rsync) will read all the bind mounts. ...
DrownedSuccess's user avatar
3 votes
2 answers
1k views

Cannot umount /dev bind-mount

I made a script which (tries to) duplicate my live disk /dev/sdb to a second disk /dev/sda, one rsync per partition (full script). Last step is to install grub on /dev/sda. The method I use is ...
Bruno's user avatar
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1 vote
4 answers
2k views

How to edit fstab to mount bind a directory that have spaces in the PATH at start in wsl2

I am currently using wsl2 on windows and I use MS OneDrive locally in parallel for my studies. Actually I sync each file with my OneDrive account. AS my Onedrive folder's name is like : Onedrive - ...
Clément's user avatar
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1 answer
307 views

Bind mounts for renaming

Can I do a bind mount on file "b" from file "a" such that file b also adapts the name of file "a"? Ex: ls / a foo/b mount --bind a foo/b ls / a foo/a
Lite Riyusaki's user avatar
1 vote
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Why `mount --bind ` allows to access shadowed mount point if run after shadowing, but not before?

I've tried to follow the answer to Accessing contents on the underlying mount point path some time ago, it did not work. But recently I've found out it works if mount --bind is executed after ...
Martian2020's user avatar
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343 views

How to get mount --bind from Tomcat to effect the whole system?

I have a folder with a file /path/to/data/one/it_works.txt And I have an empty folder: /path/to/user/bob I have a script which should be executed by a web app in Tomcat which is: #!/bin/sh Source=&...
Matthias Ronge's user avatar
2 votes
0 answers
873 views

bind mount with changed mount options from fstab

If you mount a filesystem at /foo with the mount option noexec and want the /foo/bar subtree to use exec instead, this can be achieved by bind mounting /foo/bar on itself mount --bind /foo/bar /foo/...
Hauke Laging's user avatar
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953 views

To persist a namespace, create a bind mount point on which /proc/PID?

From https://man7.org/linux/man-pages/man1/n.1.html : By default, a new namespace remains in existence only as long as it has at least one member process. A namespace can be made persistent— that ...
Carlos Vazquez's user avatar
1 vote
0 answers
169 views

Bind mount in an encrypted systemd-homed

I use to have a directory, lets call it F, in my home directory, so I normally did cd /home/me/F. (or variants) My home directory is encrypted with luks using systemd-homed. Since F grew too much, I ...
jjcasmar's user avatar
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1 answer
529 views

Create another symbolic link from symbolic link in Debian by mount --bind ... command

I have got question how to create symbolic link from another symbolic link (with mount --bind command) under Debian. They are two cases: First case: I have got core data in /main/data. And in the ...
SED85's user avatar
  • 45
1 vote
1 answer
513 views

How to bind mount a directory in .bashrc without sudo privilege

NOTE: I'm working in WSL2, but my issues lies entirely within the Linux side of things. Please let me know if this is not the right place for this. I am needing to mount --bind a directory whenever ....
Ryan Wheale's user avatar
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0 answers
122 views

How to prevent block device like hdisk to mount, using ibudev

It is possible to prevent USB device to be bound using libudev (udev interface in c). Now I want to prevent other devices like block devices to mount using it. Is it possible?? and how to do it?? ...
Redwan's user avatar
  • 1
2 votes
1 answer
378 views

In a user namespace as non-root, on a nosuid,nodev filesystem, why does a bind mount succeed but a remount fails?

In a Linux user namespace, as non-root, I bind mount /tmp/foo to itself. This succeeds. Then, I try to remount /tmp/foo to be read-only. If /tmp is mounted with nosuid or nodev, then the remount ...
mpb's user avatar
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2 answers
739 views

autofs mount local directory when nfs unavailable

I want to have my home directory be an NFS mount when it's available, or a local directory when it's not. Think of a laptop that I might want to take somewhere off of my normal network. What I have ...
denebeim's user avatar
0 votes
1 answer
377 views

Linking a dropbox business acccount from “~/Dropbox (firm-name)” to “~/Dropbox”, with "mount --bind" or symlink or something else?

Been using my Dropbox account for years on a Lubuntu system. Now, my new company has made a Business account available to me. However, Dropbox insists that this folder should be called: ~/Dropbox (...
emilBeBri's user avatar
  • 217
2 votes
0 answers
1k views

Unable to chroot mount point?

# cd /mnt # file $(which chroot) /usr/bin/chroot: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64-ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=...
Neusa Antonia's user avatar
13 votes
1 answer
12k views

What is the point of btrfs subvolumes?

The system administrator guide of the Btrfs wiki (here) says: A Btrfs subvolume can be thought of as a POSIX file namespace. I remember at first it saying that a subvolume is, as opposed to being ...
Melab's user avatar
  • 4,058
1 vote
1 answer
103 views

Bind-mount and cryptsetup result in truncated root-path in /proc/self/mountinfo

I have an encrypted container containing an ext4 filesystem with a subdirectory which is bind-mounted at a later point in time. If I take look at /proc/self/mountinfo, the root-directory for the mount ...
std_unordered_map's user avatar
0 votes
1 answer
473 views

Determine available space on bind mount from inside a Docker container

I have an application inside a Docker container running Debian that has a feature that can import a lot of big files. The application stores the files in a folder on the host that is accessible via a ...
Fabian's user avatar
  • 101
6 votes
1 answer
3k views

Using bind mounts with Overlayfs

I am attempting to create a virtual mount using bind mounts in combination with OverlayFS. What would be most optimal is as follows: The root folder is bind-mounted to a new sub-folder, and used as ...
Zeitwechsler's user avatar
0 votes
1 answer
469 views

bind mount: reproduce, fstab-style

How can I generate a bind-mount entry for fstab, given an existing (mounted) mountpoint? Neither findmnt nor mount produce a fstab-style entry. I suppose one can parse findmnt and figure out SOME of ...
usretc's user avatar
  • 629
7 votes
1 answer
862 views

Why do bind mounts of device nodes break with EACCES in root of a tmpfs?

A common scenario for setting up a container/sandbox is wanting to create a minimal set of device nodes in a new tmpfs (rather than exposing the host /dev), and the only (unprivileged) way I know to ...
R.. GitHub STOP HELPING ICE's user avatar
2 votes
0 answers
717 views

Bind mount but exclude a subdirectory

I'm using a chrooted Debian inside my router's base Linux OS. I want to move bind as many directories from the rootfs in the chroot as possible. All good so far. however, when it comes to the mnt ...
James Hopwood's user avatar
0 votes
1 answer
176 views

unable to list/access files inside schroot from a `mount --bind`

I created the chroot with schroot following these instructions: https://wiki.winehq.org/Building_Wine#Chroot Then to test it I did: $ sudo mkdir /TestA $ echo abc |sudo tee /TestA/tst.txt $ cat /...
Aquarius Power's user avatar
1 vote
0 answers
3k views

How to map my host's to the container's user in docker-compose using the lebokus/docker-volume-bindfs plugin?

I have a php dev stack setup through Dockerfiles and docker-compose. I mount the source tree and composer vendor folder to the container. My host's local user philipp has id 1000 and my container uses ...
k0pernikus's user avatar
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4 votes
1 answer
2k views

Mounting successively in fstab: wait for partition to be mounted?

I mount successively two points using fstab in my linux system # Mounting apps drive UUID=c54ca7da-117d-4cb2-8897-019ba4f6f12d /media/user/apps ext4 defaults 0 2 # Mounting opt based on apps ...
loved.by.Jesus's user avatar
1 vote
1 answer
373 views

What does the 4th column (root) in /proc/.../mountinfo mean?

From the proc manual it names the 4th column of mountinfo as "root", and describes it as "the pathname of the directory in the filesystem which forms the root of this mount". But how to understand it? ...
Tintervenor's user avatar
1 vote
1 answer
297 views

How to mount (bind) in a one-way writing fashion

In case you needed to know, I'm on a GNU+Linux distro with kernel version 5.5.5. So, suppose I have a directory named base. Further suppose this directory only contains one empty file, named a. ...
chuck-'s user avatar
  • 43
0 votes
1 answer
328 views

Force changes from the outside to propagate into the container

I have a Docker container based on the gitlab-ce/latest image. In order to allow certain additional operations with Ansible while being minimally invasive, I opted to bind-mount over the /assets/...
0xC0000022L's user avatar
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0 answers
614 views

Unable to bind mount in Arch linux

I tried the following: sudo mount --bind /dev/sda1 /path/to/a/directory sudo mount -o bind /Dec/sda1 /path/to/a/directory both gives an error message : mount(2): system call failed: Not a ...
Just Khaithang's user avatar
0 votes
1 answer
5k views

Proxmox LXC storage share, permission problems

I'm totally new in these enviroments but I'm trying to learn. I installed proxmox on a single SSD, then attached one HDD(/dev/sdb) to the system for media storage. The basic idea was to create one ...
toma3757's user avatar
1 vote
0 answers
252 views

Is it safe to move a directory that has been bind mounted?

Say we have a directory that we bind mount to another directory like so mount --bind directory mount-point Later on we move or rename the directory mv directory directory-2 What happens when a ...
patatahooligan's user avatar
14 votes
1 answer
4k views

How can I make a device available inside a systemd-nspawn container with user namespacing?

I would like to mount an encrypted image file using cryptsetup inside a systemd-nspawn container. However, I get this error message: [root@container ~]# echo $key | cryptsetup -d - open luks.img luks ...
sjy's user avatar
  • 896
1 vote
1 answer
340 views

does nosuid work on bind-mounts to suid partitions?

if i have /target mounted with suid and then make a bind-mount on /bound with mount -o bind,nosuid /target /bound, will nosuid take effect on /bound ? (imo it should take effect but i'd still like a ...
hanshenrik's user avatar
1 vote
0 answers
847 views

Why is nofail ignored for bind mounts in /etc/fstab?

I have added the following line to /etc/fstab (don't ask for a reason, it is a completely separate discussion that does not affect this question): /nonexistent /bin none ro,bind,nofail 0 0 On boot I ...
patatahooligan's user avatar
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0 answers
67 views

Is it possible for a filesystem/directory to be mounted as temporarily writable so that all changes made are discarded on unmounting?

Specifically my use case is that I am using ostree to deploy specific folders of the filesystem to some systems I manage. Because overwriting the original directories of the system is risky in case of ...
patatahooligan's user avatar