Public bug reported:
... that may prevent rebooting to systems without the same optimization.
This can be observed by on EC2 m6g instances:
$ sudo apt install libc6-lse
$ sudo update-initramfs -k all -u
$ unmkinitramfs /boot/initrd.img i
$ ls i/
bin conf cryptroot etc init lib run sbin scripts usr var
$ cd i/
$ find . -name *pthread*
./usr/lib/aarch64-linux-gnu/atomics/libpthread.so.0
./usr/lib/aarch64-linux-gnu/atomics/libpthread-2.31.so
Luckily btrfs-progs does not play a role in rebooting, thus m6g
instances can still be resized to a1 instance types, and I observed no
failure when trying to do so.
Follow-up for LP: #1880853.
** Affects: initramfs-tools (Ubuntu)
Importance: Low
Status: New
** Changed in: initramfs-tools (Ubuntu)
Importance: Undecided => Low
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https://bugs.launchpad.net/bugs/1883883
Title:
Only libraries optimized for the running system end up in initramfs
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