Okay, a bit more information has come through on the originating bug for
this, which has indicated this definitely isn't a kernel bug. Instead,
dracut is silently truncating the initramfs it generates (during the
zstd compression phase) when the host system runs out of memory.
So, this is a dracut issue, not kernel.
** Changed in: linux-raspi (Ubuntu)
Status: Confirmed => Invalid
** Also affects: dracut (Ubuntu)
Importance: Undecided
Status: New
** Changed in: dracut (Ubuntu)
Status: New => Confirmed
** Summary changed:
- Kernel 1011 failing to mount rootfs
+ Dracut silently produces truncated initramfs with constrained RAM
** Also affects: dracut (Ubuntu Resolute)
Importance: Undecided
Status: New
** Also affects: linux-raspi (Ubuntu Resolute)
Importance: Undecided
Status: New
** Changed in: linux-raspi (Ubuntu Resolute)
Status: New => Invalid
** Changed in: dracut (Ubuntu Resolute)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2157789
Title:
Dracut silently produces truncated initramfs with constrained RAM
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