coreos.live.rootfs_url to support new separated initramfs for PXE booting #888
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Fedora CoreOS profiles in Matchbox were updated, for rootfs image becoming available on stable on Oct 6th, but not here. The PR should match poseidon/matchbox@da0df01#diff-4541f7b7c174f6ae6270135942c1c65ed9e09ebe81239709f5a9fb34e858ddcf Caveat is that everyone must use a sufficiently new FCOS stable version (32.20200923.3.0+) if they aren't already. |
dghubble
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Nov 25, 2020
* Fedora CoreOS stable (after Oct 6) ships separate initramfs and rootfs images, used as initrd's * Update profiles to match the Matchbox examples, which have already switched to the new profile and to remove the unused kernel args * Requires Fedora CoreOS version which ships rootfs images (e.g. stable 32.20200923.3.0 or later) Rel: * coreos/fedora-coreos-tracker#390 (comment) * poseidon/matchbox@da0df01#diff-4541f7b7c174f6ae6270135942c1c65ed9e09ebe81239709f5a9fb34e858ddcf Supercedes #888
dghubble
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Nov 25, 2020
* Fedora CoreOS stable (after Oct 6) ships separate initramfs and rootfs images, used as initrd's * Update profiles to match the Matchbox examples, which have already switched to the new profile and to remove the unused kernel args * Requires Fedora CoreOS version which ships rootfs images (e.g. stable 32.20200923.3.0 or later) Rel: * coreos/fedora-coreos-tracker#390 (comment) * poseidon/matchbox@da0df01#diff-4541f7b7c174f6ae6270135942c1c65ed9e09ebe81239709f5a9fb34e858ddcf Supercedes #888
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Thanks for the reminder and testing out approaches |
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Superceded by #889 |
Snaipe
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Apr 13, 2023
* Fedora CoreOS stable (after Oct 6) ships separate initramfs and rootfs images, used as initrd's * Update profiles to match the Matchbox examples, which have already switched to the new profile and to remove the unused kernel args * Requires Fedora CoreOS version which ships rootfs images (e.g. stable 32.20200923.3.0 or later) Rel: * coreos/fedora-coreos-tracker#390 (comment) * poseidon/matchbox@da0df01#diff-4541f7b7c174f6ae6270135942c1c65ed9e09ebe81239709f5a9fb34e858ddcf Supercedes poseidon#888
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Fedora CoreOS PXE initramfs image has been separated into two images: initramfs and rootfs. Both of them needed for PXE boot which brakes the current setup. The new rootfs artefact can be specified as either a second element in the initrd array or as a kernel argument
coreos.live.rootfs_url=.More information here
This PR contains the latter. I didn't see that one would load faster than the other in my environment. In the Fedora CoreOS PXE guide noted that the kernel argument
coreos.live.rootfs_urlrequires at least 2GiB RAM while the initrd option requires at least 3GiB RAM.