Are there more details about "copying to /usr/etc/" is undefined behavior> In my image, I fail to c

Are there more details about "copying to /usr/etc/" is undefined behavior>

In my image, I fail to copy file to

/etc/hosts

/etc/hosts

/etc/hosts

/etc/hosts but copying to

/usr/etc/hosts

/usr/etc/hosts

/usr/etc/hosts

/usr/etc/hosts works

Error is

Read-only filesystem

Read-only filesystem

Read-only filesystem

Read-only filesystem

Ffiftydinar Are there more details about "copying to /usr/etc/" is undefined behavior> In m...

Kyle Gospo•8/8/24, 4:24 PM

I'll let @antheas explain

Ffiftydinar Are there more details about "copying to /usr/etc/" is undefined behavior> In m...

antheas•8/8/24, 4:26 PM

where? in the container?

Aantheas where? in the container?

fiftydinarOP•8/8/24, 4:26 PM

yes

antheas•8/8/24, 4:26 PM

is etc read only?

fiftydinarOP•8/8/24, 4:26 PM

no, as other files are copied successfully

antheas•8/8/24, 4:26 PM

uh maybe ill have to redo the warning

antheas•8/8/24, 4:27 PM

let me pull bluefin

Ffiftydinar Are there more details about "copying to /usr/etc/" is undefined behavior> In m...

Kyle Gospo•8/8/24, 4:27 PM

got a link to this copy?

Kyle Gospo•8/8/24, 4:27 PM

seems odd

antheas•8/8/24, 4:27 PM

i put it on the releases as a warning

antheas•8/8/24, 4:27 PM

of rechunk

KKyle Gospo got a link to this copy?

fiftydinarOP•8/8/24, 4:27 PM

https://github.com/fiftydinar/gidro-os/actions/runs/10301404470/job/28512868930#step:2:2378

fiftydinarOP•8/8/24, 4:28 PM

When trying to do

touch

touch

as a workaround, I get the mentioned error:
https://github.com/fiftydinar/gidro-os/actions/runs/10301698741/job/28513821557#step:2:2004

fiftydinarOP•8/8/24, 4:29 PM

I added the exact step where it fails in URL now

antheas•8/8/24, 4:29 PM

how do you build the image wait

antheas•8/8/24, 4:29 PM

is this an ostree image or an oci iamge

Aantheas is this an ostree image or an oci iamge

fiftydinarOP•8/8/24, 4:29 PM

BlueBuild, ostree image

antheas•8/8/24, 4:29 PM

ostree you must use always /usr/etc

antheas•8/8/24, 4:30 PM

oci you must use always /etc

fiftydinarOP•8/8/24, 4:30 PM

hmm, interesting

Kyle Gospo•8/8/24, 4:30 PM

bluebuild is oci though, no?

antheas•8/8/24, 4:30 PM

i see a bunch of ostree commit in there

Kyle Gospo•8/8/24, 4:30 PM

that error is very strange

antheas•8/8/24, 4:30 PM

and a bunch of cursed mount

fiftydinarOP•8/8/24, 4:30 PM

wait a sec, we use ostree container commit

fiftydinarOP•8/8/24, 4:30 PM

idk if that counts as ostree container or what

fiftydinarOP•8/8/24, 4:30 PM

or just using ostree instruction in OCI

antheas•8/8/24, 4:31 PM

uh i dont think its called ostree container commit, that one does a bit of cleanup in var

antheas•8/8/24, 4:31 PM

let me pull an oci image and see whats going on in etc

fiftydinarOP•8/8/24, 4:31 PM

Here's the repo of BlueBuild CLI:
https://github.com/blue-build/cli

antheas•8/8/24, 4:32 PM

antheas•8/8/24, 4:32 PM

edited just fine

antheas•8/8/24, 4:32 PM

image was

ghcr.io/ublue-os/bazzite-deck:40-20240627

ghcr.io/ublue-os/bazzite-deck:40-20240627

antheas•8/8/24, 4:33 PM

also theres no rush to fix, if the rsync command works it works

fiftydinarOP•8/8/24, 4:35 PM

those little errors scare me if some regressions goes unnoticed

antheas•8/8/24, 4:35 PM

yeah me too bc now rechunk with rsync will mess with some /etc permissions

antheas•8/8/24, 4:36 PM

but /etc being read only kind of points me to using ostree

Kyle Gospo•8/8/24, 4:36 PM

--force-allowreplace is also a no, doesn't change this behavior

Kyle Gospo•8/8/24, 4:36 PM

so we're down to replace file in containerfile, or move it back to /usr/etc in the meantime

Kyle Gospo•8/8/24, 4:36 PM

I will likely do the latter

Robert•8/8/24, 4:36 PM

What's the primary issue with /usr/etc/? Is it just that it's not officially supported by Fedora?
Or is there some other factor forcing us to change?

antheas•8/8/24, 4:37 PM

its that its implicitly merged with /etc during deployment by rpm-ostree

antheas•8/8/24, 4:37 PM

and now that we are using rechunk, either we have to explicitly merge it and choose how or the image will not boot

antheas•8/8/24, 4:38 PM

essentially rpm-ostree has a little path rewriter that converts /etc to /usr/etc and leaves /usr/etc alone

antheas•8/8/24, 4:38 PM

if the rsync command in rechunk does not cause issues it essentially is not a major problem

antheas•8/8/24, 4:39 PM

but the problem is the rsync command will rewrite the dir permissions now

Robert•8/8/24, 4:39 PM

If needed, overwriting the existing file during the COPY isn't as bad as I thought. It's just two places where this is needed

antheas•8/8/24, 4:40 PM

i guess you relied on this behavior rn because with e.g. yafti you placed your modified file with ublue on /usr/etc

antheas•8/8/24, 4:40 PM

and then rpm-ostree skipped the error when installing and automerged during deployment

Kyle Gospo•8/8/24, 4:45 PM

https://github.com/ublue-os/config/pull/311

GitHub

fix: Move policy.json back to /usr/etc temporarily while issues are...

Without this, this package conflicts with containers-common
We should likely repackage that with our changes and have this package provide it to fix this properly.

Are there more details about "copying to /usr/etc/" is undefined behavior> In my image, I fail to c

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