** Changed in: initramfs-tools (Ubuntu Jammy)
Status: New => Triaged
** Changed in: initramfs-tools (Ubuntu Jammy)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1981385
Title:
initrd lacks modules to mount boot image from http boot
Status in initramfs-tools package in Ubuntu:
Fix Released
Status in initramfs-tools source package in Jammy:
Triaged
Bug description:
If you use UEFI http boot to boot an image (rather than an EFI
executable) and get all the way to a normal userspace, you can access
the boot image as /dev/pmem0. But this is not accessible in the
initrd; presumably some modules are missing. Dimitri added some
modules that are clearly going to be necessary (kernel/drivers/nvdimm)
in 0.140ubuntu14 and I added kernel/drivers/dax too in local
experiments but this appears not to be enough to get it to appear.
This is desirable because then you can just feed an installer ISO to a
machine via http boot and the installer just works as normal (the
speed and, uh, quality, of the implementation of HTTP in a given
machine's firmware may mean this isn't always the best option but it
would be nice if it worked in case someone's machine actually does
this well).
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