Questions tagged [unionfs]

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Hard links with MergerFS

If someone uses the command "cp -alr" on a directory located in a non-path preserving merged pool will it always create a directory on the same disk with all of its contents as hard links? For ...
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0answers
49 views

Mounting writeable xz compressed filesystem

I want use gnome-diskimage to take an image of a disk and write it to a mounted xz compression filesystem. Unfortunately, gnome-diskimages don't have a compression option. :( Some possibilities are ...
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1answer
168 views

Mount fuse.mergerfs in udev script

I use a udev rule to recognize when a specific USB stick is plugged. When it's plugged in, a bash script is started which mounts some devices. That works very well after I did some changes to the ...
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2answers
410 views

Can aufs be used as fuse filesystem like unionfs-fuse?

I'm experimenting with different union/overlay filesystem types. I've found unionfs-fuse package in Ubuntu which allowed me to use unionfs mount command as non-root user. But it seems aufs, which is ...
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2answers
310 views

How safe is it to use unionfs in FreeBSD?

From man mount_unionfs: BUGS: THIS FILE SYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK) AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM. USE AT YOUR OWN RISK. BEWARE OF DOG. ...
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1answer
166 views

How to limit how much disk space a folder can use?

I have 2 hdd storage boxes I share with my linux server which has a SSD of ~500 GB. I want to merge the 3 folders into one and I'm using unionfs for that. I need it to download data on it. How can I ...
11
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1answer
4k views

Unionfs vs Aufs vs Overlayfs vs mhddfs, which one do I use

I have randomly been reading about union file system which enables a user to mount multiple filesystems on top of one another simultaneously. However, am finding trouble deciding on which one to use(...
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2answers
223 views

Recommended way combining smaller partition into One large directory

I have a particular partition on my server (/var) that's filling up in a few days. Am running a busy mail server and all user mails go here. However, now I need to increase the storage in order to ...
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0answers
109 views

chroot of entire filesystem, except for one file

I want to create a chroot for a command that I'll run, and I want the chroot to be completely identical to the "real" filesystem, except for one altered file. (Let's just assume that this is indeed ...
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0answers
134 views

unionfs for cifs mounts

I want to merge some cifs mounts together. There are /extDrives/cifs_001 /extDrives/cifs_002 /extDrives/cifs_003 /extDrives/cifs_common cifs_common should show all content of cifs_00* Writes to ...
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1answer
206 views

Mount unionfs (or aufs) branches fed from stdin?

Is it possible to feed the branch paths from stdin to the mount (or mount_unionfs) command, instead of supplying them as arguments or from a file? cat ~/dirs_with_photos.txt | mount -t unionfs I don'...
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1answer
2k views

Ubuntu 16.04 with read-only filesystem and writable layer

(This is a cross post from askubuntu, as I think here are more people to know how to get this working) I want to set up Ubuntu 16.04 like a live CD. This worked great in Ubuntu 12.04 but with 16.04 ...
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144 views

overlay-filesystem that can differentiate between metadata and file content?

AFAIK with aufs when a file is touched (ie. only it's metadata changed, not it's contents), then the copy-on-write mechanism of the file system will copy the whole file into the r/w layer, essentially ...
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0answers
819 views

Is there a “supported” way in RHEL/CentOS 7 to union-mount a directory tree on top of an NFS mount point?

I have an NFS share containing almost 500 chrooted (s)ftp user's home directories. This NFS share is mounted on several FTP servers forming a highly available FTP cluster. I would like to enable ...
6
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1answer
2k views

chroot with unionfs-fuse, can't access /dev/*

I have created the a chroot jail in combination with unionfs-fuse so that I don't need to install another system inside it. However, the resulting system's /dev entries are not readable.This is ...