#cubox irc log of Mon 20 Feb 2017

IRC log of #cubox of Mon 20 Feb 2017. All times are in CET < Back to index

10:36 topi` jnettlet: quick question. Any possibility of getting overlayfs to work on the 3.14 kernel of the HB? it seems to have landed in 3.18 only :(

10:36 topi` we create custom FS images for every client and it would make sense to actually deploy a base image + customer_image(overlayfs)

10:37 jnettlet topi`, I have an initial patchset which you can test. I think it may need some additional work, but if you have time to QA it would help move it forward.

10:37 topi` I find it strange that you have patchsets for *everything*

10:38 topi` :)

10:39 jnettlet I try to stay on top of everything. But not something that is tested enough that we want to support 100% :\

10:39 jnettlet I should probably push these out to my personal repo again.

10:39 topi` it's probably not easy to backport things like overlayfs which depend on some cutting-edge FS features ;)

10:40 topi` I remember 3.18 had some less trivial work on the filesystem tree

10:40 topi` things change under the hood constantly :)

10:40 jnettlet yeah, it was basically going through the patch difference and figuring out what pieces were needed

10:41 jnettlet like tmpfs: implement generic xattr support

10:41 Ke I couldn't even mount contemporary ext4 on 3.14 due to unsopported featrures

10:41 Ke might have been uid32

10:42 jnettlet I haven't run into that. perhaps it is a non-default option that was enabled

10:42 topi` Ke: those are the things that landed on 3.18

10:45 suihkulokki topi`: building aufs for 3.14 doesn't need backporting

10:46 jnettlet topi`, yes. Actually I am working with these guys, https://resin.io/, on fully supporting our devices under https://resinos.io/

10:47 jnettlet they support 5 "project" devices for free, but plan on releasing the server soonish.

10:47 jnettlet pretty neat way to manage and push code out IoT like devices

10:54 vpeter This is patch used by amlogic with libreelec: https://github.com/LibreELEC/LibreELEC.tv/blob/master/packages/linux/patches/amlogic-3.14/linux-002-backport_overlayfs.patch

10:54 vpeter I think it compiles fine with sr kernel too. But last time I didn't check the functionality.

11:01 jnettlet that looks like a newer version than mine. I just took that basic 3.18 overlayfs and backported that.

11:02 suihkulokki jnettlet: I think important fixes have landed overlayfs since the initial merge in 3.18

11:03 jnettlet suihkulokki, most likely.

11:03 jnettlet hopefully I will get the 4.4 branch out the door soon. still fixing up a few longstanding bugs on it.

11:11 vpeter any eta? :)

11:12 jnettlet not right now. Mostly depends on how much time I can free up.

11:16 jnettlet dv__, did you make any progress on your i2c issues?

11:48 topi` suihkulokki: how does aufs work in comparison with overlayfs?

11:50 topi` jnettlet: what kind of a thing is this resin.io thingy? Something that competes with Ubuntu Snappy Core?

11:50 topi` lots of sales pitch, but they seem to use Containers, which means either Docker or LXC

11:50 jnettlet topi`, well kind of but not really. Resion.io is a platform to push code updates to connected devices. It uses docker as the backend rather than Snappy

11:50 topi` the only way to make "small" installations suitable for BeagleBones, etc, is to use LXC and keep it minimal

11:51 topi` I just read a rant about Docker vs LXC or rather their deployment models ;)

11:52 jnettlet well there are lots of rants. Nobody even talks about the other container options. Funny enough nobody has even paid attention that there has been an agreement to standardize containers

11:52 suihkulokki aufs is what people used before overlayfs got into kernel. some will argue aufs is more mature and has more features than overlayfs.

11:52 suihkulokki topi`: ^

11:52 topi` great

11:53 topi` does it work as a way to overlay just a bunch of different files to /etc/ and /lib for a base image?

11:53 topi` I want to keep a certain Base Image, (say, debian/jessie) and then change some of the files for a specific client requirement

11:53 topi` so we can keep those changed files in a git tree

11:53 topi` and not the whole damn filesystem :)

11:54 suihkulokki Yes, it's an union filesystem like overlayfs

11:55 topi` great then :)

11:56 topi` ouch, aufs is a userspace fs?

11:56 suihkulokki no

11:56 vpeter Is there any overlay fs or something similar which would save top level changes back to lover fs. Like having ramfs over slow sd card.

11:56 suihkulokki 3rd party kernel module

11:57 topi` I was reading wiki.gentoo.org :)

11:58 topi` OK, so aufs3 is for linux 3.x series

12:06 dv__ jnettlet: yes, it was actually quite simple

12:07 dv__ it is a rather ugly hack tho ... I added an attribute so I can set the CVBS input via a sysfs file

12:07 dv__ a cleaner way would be to somehow expose that control through v4l - but the v4l input control is not the right one for this

12:07 dv__ still, it'll do for now

12:07 jnettlet great!

12:08 topi` vpeter: you need some kind of "writeback cache", maybe aufs4 has it implemented

12:08 topi` vpeter: but wouldn't the current filesystem buffering act like this already?

12:09 topi` if you have, say, 2GB of RAM then there's plenty of space for buffering

12:10 vpeter I would like to write back on my request. If not satisfied with result 'rm *' and start again :)

12:11 topi` :D

12:11 topi` so, what we really need, is "undelete" for linux! :)

12:11 topi` and a way to guess the FIRST letter of the deleted file ;)

22:24 GAZ082 hi there, anybody here?

22:28 GAZ082 ok then, ill leave my question here, hope someone will pick it up...

22:29 GAZ082 I made a fresh install of Archlinux on my Cubox-i4pro and when trying to play videos, i get this: ERROR: VpuOpen - VPU load failed with error code 1.

22:30 GAZ082 on dmesg i get VPU initialized. have installed imx-vpu-5.4.33-1

22:40 flips maybe try the solidrun kernel ... (I don't know really)

22:56 GAZ082 how can i install it?

22:57 GAZ082 im already using 3.14.79-1-ARCH

22:57 GAZ082 linux-imx6-3.14.79-1

23:26 GAZ082 hi newcomers, I made a fresh install of Archlinux on my Cubox-i4pro and when trying to play videos, i get this: ERROR: VpuOpen - VPU load failed with error code 1.

10:36	topi`	jnettlet: quick question. Any possibility of getting overlayfs to work on the 3.14 kernel of the HB? it seems to have landed in 3.18 only :(
10:36	topi`	we create custom FS images for every client and it would make sense to actually deploy a base image + customer_image(overlayfs)
10:37	jnettlet	topi`, I have an initial patchset which you can test. I think it may need some additional work, but if you have time to QA it would help move it forward.
10:37	topi`	I find it strange that you have patchsets for everything
10:38	topi`	:)
10:39	jnettlet	I try to stay on top of everything. But not something that is tested enough that we want to support 100% :\
10:39	jnettlet	I should probably push these out to my personal repo again.
10:39	topi`	it's probably not easy to backport things like overlayfs which depend on some cutting-edge FS features ;)
10:40	topi`	I remember 3.18 had some less trivial work on the filesystem tree
10:40	topi`	things change under the hood constantly :)
10:40	jnettlet	yeah, it was basically going through the patch difference and figuring out what pieces were needed
10:41	jnettlet	like tmpfs: implement generic xattr support
10:41	Ke	I couldn't even mount contemporary ext4 on 3.14 due to unsopported featrures
10:41	Ke	might have been uid32
10:42	jnettlet	I haven't run into that. perhaps it is a non-default option that was enabled
10:42	topi`	Ke: those are the things that landed on 3.18
10:45	suihkulokki	topi`: building aufs for 3.14 doesn't need backporting
10:46	jnettlet	topi`, yes. Actually I am working with these guys, https://resin.io/, on fully supporting our devices under https://resinos.io/
10:47	jnettlet	they support 5 "project" devices for free, but plan on releasing the server soonish.
10:47	jnettlet	pretty neat way to manage and push code out IoT like devices
10:54	vpeter	This is patch used by amlogic with libreelec: https://github.com/LibreELEC/LibreELEC.tv/blob/master/packages/linux/patches/amlogic-3.14/linux-002-backport_overlayfs.patch
10:54	vpeter	I think it compiles fine with sr kernel too. But last time I didn't check the functionality.
11:01	jnettlet	that looks like a newer version than mine. I just took that basic 3.18 overlayfs and backported that.
11:02	suihkulokki	jnettlet: I think important fixes have landed overlayfs since the initial merge in 3.18
11:03	jnettlet	suihkulokki, most likely.
11:03	jnettlet	hopefully I will get the 4.4 branch out the door soon. still fixing up a few longstanding bugs on it.
11:11	vpeter	any eta? :)
11:12	jnettlet	not right now. Mostly depends on how much time I can free up.
11:16	jnettlet	dv__, did you make any progress on your i2c issues?
11:48	topi`	suihkulokki: how does aufs work in comparison with overlayfs?
11:50	topi`	jnettlet: what kind of a thing is this resin.io thingy? Something that competes with Ubuntu Snappy Core?
11:50	topi`	lots of sales pitch, but they seem to use Containers, which means either Docker or LXC
11:50	jnettlet	topi`, well kind of but not really. Resion.io is a platform to push code updates to connected devices. It uses docker as the backend rather than Snappy
11:50	topi`	the only way to make "small" installations suitable for BeagleBones, etc, is to use LXC and keep it minimal
11:51	topi`	I just read a rant about Docker vs LXC or rather their deployment models ;)
11:52	jnettlet	well there are lots of rants. Nobody even talks about the other container options. Funny enough nobody has even paid attention that there has been an agreement to standardize containers
11:52	suihkulokki	aufs is what people used before overlayfs got into kernel. some will argue aufs is more mature and has more features than overlayfs.
11:52	suihkulokki	topi`: ^
11:52	topi`	great
11:53	topi`	does it work as a way to overlay just a bunch of different files to /etc/ and /lib for a base image?
11:53	topi`	I want to keep a certain Base Image, (say, debian/jessie) and then change some of the files for a specific client requirement
11:53	topi`	so we can keep those changed files in a git tree
11:53	topi`	and not the whole damn filesystem :)
11:54	suihkulokki	Yes, it's an union filesystem like overlayfs
11:55	topi`	great then :)
11:56	topi`	ouch, aufs is a userspace fs?
11:56	suihkulokki	no
11:56	vpeter	Is there any overlay fs or something similar which would save top level changes back to lover fs. Like having ramfs over slow sd card.
11:56	suihkulokki	3rd party kernel module
11:57	topi`	I was reading wiki.gentoo.org :)
11:58	topi`	OK, so aufs3 is for linux 3.x series
12:06	dv__	jnettlet: yes, it was actually quite simple
12:07	dv__	it is a rather ugly hack tho ... I added an attribute so I can set the CVBS input via a sysfs file
12:07	dv__	a cleaner way would be to somehow expose that control through v4l - but the v4l input control is not the right one for this
12:07	dv__	still, it'll do for now
12:07	jnettlet	great!
12:08	topi`	vpeter: you need some kind of "writeback cache", maybe aufs4 has it implemented
12:08	topi`	vpeter: but wouldn't the current filesystem buffering act like this already?
12:09	topi`	if you have, say, 2GB of RAM then there's plenty of space for buffering
12:10	vpeter	I would like to write back on my request. If not satisfied with result 'rm *' and start again :)
12:11	topi`	:D
12:11	topi`	so, what we really need, is "undelete" for linux! :)
12:11	topi`	and a way to guess the FIRST letter of the deleted file ;)
22:24	GAZ082	hi there, anybody here?
22:28	GAZ082	ok then, ill leave my question here, hope someone will pick it up...
22:29	GAZ082	I made a fresh install of Archlinux on my Cubox-i4pro and when trying to play videos, i get this: ERROR: VpuOpen - VPU load failed with error code 1.
22:30	GAZ082	on dmesg i get VPU initialized. have installed imx-vpu-5.4.33-1
22:40	flips	maybe try the solidrun kernel ... (I don't know really)
22:56	GAZ082	how can i install it?
22:57	GAZ082	im already using 3.14.79-1-ARCH
22:57	GAZ082	linux-imx6-3.14.79-1
23:26	GAZ082	hi newcomers, I made a fresh install of Archlinux on my Cubox-i4pro and when trying to play videos, i get this: ERROR: VpuOpen - VPU load failed with error code 1.