Add support /dev/fuse

[cedvan]

Hi,

Please possible add support fuse module ?

Thank you

[ailispaw]

Hi @cedvan ,
Thank you for opening an issue.

How can I add that module and test it?
Could you make a PR for it?

[cedvan]

I don't know, but I can try

[ailispaw]

If all you need is fuse in user land, you can install with https://github.com/ailispaw/docker-root-pkg.

$ sudo pkg install libfuse

It will install /usr/bin/fusermount and /usr/lib/libfuse.so*.

If you need any kernel configuration for it, please let me know.

[ailispaw]

May need CONFIG_FUSE_FS in kernel.config, too.

[ailispaw]

https://github.com/libfuse/libfuse

[cedvan]

Thank you !

I had install fuse with sudo pkg install libfuse.

Result :

$ modprobe -l |grep fuse
kernel/drivers/message/fusion/mptbase.ko
kernel/drivers/message/fusion/mptscsih.ko
kernel/drivers/message/fusion/mptspi.ko
kernel/drivers/message/fusion/mptsas.ko
kernel/drivers/message/fusion/mptctl.ko
$ cat /dev/fuse
cat: can't open '/dev/fuse': No such file or directory

Need CONFIG_FUSE_FS to enable fuse ?
Where is kernel.config file please ?

[ailispaw]

https://github.com/ailispaw/docker-root/blob/master/configs/kernel.config#L2028

[ailispaw]

sudo pkg install libfuse installs only modules in userspace.
You need CONFIG_FUSE_FS for kernel modules and devices.

[ailispaw]

diff --git a/configs/buildroot.config b/configs/buildroot.config
index 2a62e5c..571277b 100644
--- a/configs/buildroot.config
+++ b/configs/buildroot.config
@@ -1065,7 +1065,7 @@ BR2_PACKAGE_OPENSSL=y
 # BR2_PACKAGE_GAMIN is not set
 # BR2_PACKAGE_LIBCONFIG is not set
 # BR2_PACKAGE_LIBCONFUSE is not set
-# BR2_PACKAGE_LIBFUSE is not set
+BR2_PACKAGE_LIBFUSE=y
 # BR2_PACKAGE_LIBLOCKFILE is not set
 # BR2_PACKAGE_LIBNFS is not set
 # BR2_PACKAGE_LIBSYSFS is not set
diff --git a/configs/kernel.config b/configs/kernel.config
index 2fad792..602e5dc 100644
--- a/configs/kernel.config
+++ b/configs/kernel.config
@@ -2025,7 +2025,8 @@ CONFIG_INOTIFY_USER=y
 # CONFIG_QUOTA is not set
 # CONFIG_QUOTACTL is not set
 # CONFIG_AUTOFS4_FS is not set
-# CONFIG_FUSE_FS is not set
+CONFIG_FUSE_FS=y
+# CONFIG_CUSE is not set
 CONFIG_OVERLAY_FS=y

 #

[cedvan]

Ok thank you very much !

I will create a PR as soon as possible ;)

[ailispaw]

If that modification doesn't make kernel bigger significantly, I will add CONFIG_FUSE_FS in the next release.

[ailispaw]

BTW, what fuse will benefit and what is your use case?

[cedvan]

I need fuse to support glusterfs :)

[ailispaw]

Is glusterfs in a container or VM?
I'm very interested in that.

[ailispaw]

Oh it seems silly question.. forget it. :)

[ailispaw]

Please provide how to use it with the PR.

[ailispaw]

Are you trying to use GlusterFS from a container or in DockerRoot VM?

[cedvan]

I create 2 DockerRoot VM hosting container GlusterFS Server. And I create 2 DockerRoot VM hosting container GlusterFS Convoy Docker (Client). Convoy need fuse in kernel to share data with server

[ailispaw]

I see. Thanks. So it seems you need just CONFIG_FUSE_FS in kernel.config.

[cedvan]

Ok, I have to create a PR, or you do it ?

[ailispaw]

I can do it, but can not test it with GlusterFS. Please make and test it in your side.
I'm looking forward to reading your instruction about GlusterFS with DockerRoot.

[cedvan]

Ok, tell me when I can test, and I'll make a return ;)

[ailispaw]

Do you need docker-root.iso or docker-root.box?
I will make it for you.

[cedvan]

I use Vagrant, so need docker-root.box please.
Thank you !

[ailispaw]

OK.

[ailispaw]

https://gist.github.com/ailispaw/ec0ebf417ca66283e0de

[ailispaw]

Please download docker-root.box from RAW link at the gist. Or just git clone the gist.

Vagrant.configure(2) do |config|
  config.vm.box = "docker-root-fuse"
  config.vm.box_url = "docker-root.box"
end

$ vagrant up
$ vagrant ssh -c "ls -l /dev/fuse"
crw-------    1 root     root       10, 229 Feb 29 15:59 /dev/fuse

[ailispaw]

Now it's 1 am in Japan. Going to bed. @cedvan See you tomorrow.

[cedvan]

Thank you !

I am in France, I test tonight ;)

Good night man !

[cedvan]

Hi,

I've test. I've other problems to start glusterfs, but /dev/fuse problem is fixed :)

Thank you very much !

[ailispaw]

FYI: MariaDB container seems to need 9p2000.L, because it uses fstatvfs().

[cedvan]

Yes, that's why I think I need glusterfs :).

[cedvan]

Possible install glusterfs directly on the VM docker-root ?

[ailispaw]

You can use https://github.com/ailispaw/docker-root-pkg/tree/master/extra/package as an extra package like criu and ipvsadm.

[cedvan]

I am afraid of not being competent enough to succeed, but I will try

[ailispaw]

FYI: I have activated SSHFS/FUSE in DockerRoot v1.3.1 as well, although I haven't tested it yet.

$ sudo pkg install sshfs

[cedvan]

Ok, cool. Thank you !

[cedvan]

You have informations to the previous error : pivot_root ?

[ailispaw]

Hmm. DockerRoot doesn't allow pivot_root by default.
It needs to re-build the box with a patched boot config.

[cedvan]

Ok, so not possible ?

For information, what is a pivot_root ?

[ailispaw]

like chroot. http://man7.org/linux/man-pages/man2/pivot_root.2.html

[cedvan]

Hum ok ! :)

So not possible add chroot in docker-root ?

[ailispaw]

Ok, so not possible ?

I'm not sure that it is caused by DockerRoot or something else (libcontainer).
But I will create a custom box for you.

[cedvan]

Oh great !

Thank you very much !!

[ailispaw]

@cedvan Updated the gist with the custom docker-root.box.
#21 (comment)

[cedvan]

Ok great ! I'll try ;)

[cedvan]

Your box solved problem with pivot_root, it's very good !

But docker version 1.9.1 create bug with new rancher network... lol. Need merge your work on master and up to docker 1.10 ^^. I try build localy docker-root, but I've Linux, so difficult :)

[ailispaw]

Thanks for your feedback. I will consider to support pivot_root and Docker v1.10 in the next. :)

[cedvan]

Great !

[ailispaw]

Possible install glusterfs directly on the VM docker-root ?

Please open an issue at https://github.com/ailispaw/docker-root-pkg.
Thanks.

[ailispaw]

I'm still wondering Docker v1.10.3 is good.

Instead I have added an ability to switch between Docker versions easily.
39acf95

$ sudo /etc/init.d/docker restart v1.10.3

[cedvan]

I'm still wondering Docker v1.10.3 is good.

Why ?

Instead I have added an ability to switch between Docker versions easily.

Good idea !

[ailispaw]

I will try to use the latest Docker.

Please see https://github.com/ailispaw/docker-root#features for its usage.

[ailispaw]

Telling the truth, I don't like the FAT docker binary and I feel it's unstable recently, although I do like its basic functionalities.

[cedvan]

Ok, you do a great job, thank you !

[ailispaw]

@cedvan Thank YOU. I have enjoyed this conversation with you. Without it, I could not have such ideas.

Please let me know any problem and progress on your test.

[cedvan]

@ailispaw, To continue my test I need IPSec support 😉 .

cf #27

[ailispaw]

Closing for /dev/fuse.
Please open a new issue for the further problem.