On 6/9/21 15:53, Zbigniew Jędrzejewski-Szmek wrote:
On Wed, Jun 09, 2021 at 10:29:50AM -0500, Justin Forbes wrote:
On Wed, Jun 9, 2021 at 10:19 AM David Duncan <davdunc@xxxxxxxxx> wrote:
On Wed, Jun 9, 2021, 4:13 AM Zbigniew Jędrzejewski-Szmek <zbyszek@xxxxxxxxx> wrote:
On Wed, Jun 09, 2021 at 06:52:40AM -0000, David Duncan wrote:
Bumping this for technical discussion. We are planning to put this in action if there are no technical objections.
Please wait until the FESCo has approved the Change.
I made that sound like an imperative. That was a mistake. I wanted to redirect the thread to technical review instead of program concerns. Of course no actual implementation will be done without approval.
So, I suppose I should mention here for discussion what I put in the
FESCo ticket. My main concern with this from a cloud image
standpoint, is cloud images are run on a number of hosts. Many of
those hosts are RHEL or CentOS based. As RHEL does not enable the
btrfs filesystem at all, and has no plans to that I am aware of, this
means that users on those hosts will no longer be able to mount their
images to debug issues or modify in any way. Libguestfs for RHEL is
not a workaround at this point, because it doesn't support btrfs on
RHEL either. It would also mean that these images could not be used
as container images in that environment. Of course the images can
still be booted, and will work as expected as long as they are running
in a virtualized environment with their own kernel. I am not sure how
important this is for people, but it needs to be considered.
Yeah, I think we have to accept that there won't be any kernel support
in RHEL in a timeframe that matters for Fedora, and the RHEL host will not be
able to mount the images natively. So the questions for me are:
1. I this a problem in practice? I.e. how often do people need to use Fedora
images for containers on RHEL hosts?
2. What workaround can we put in place? Something in EPEL or dkms module with
btrfs in a copr repo?
Zbyszek
Container images have nothing to do with this. Container images are
stored as tar balls and are constructed on the underlying OS. This is
purely an issue with soemthing like libguestfs
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