https://bugzilla.suse.com/show_bug.cgi?id=1200252 Bug ID: 1200252 Summary: grub2 2.06 - full disk encryption (FDE): extremely slow load of boot partition Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.4 Hardware: 64bit OS: openSUSE Leap 15.4 Status: NEW Severity: Normal Priority: P5 - None Component: Bootloader Assignee: screening-team-bugs@suse.de Reporter: andihartmann@freenet.de QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- After applying FDE on the system, it takes very long until grub opens the (small) boot partition on a nvme disk. Reason is most probably how grub handles the necessary hashing of passwords (https://linux-blog.anracom.com/2018/11/30/full-encryption-with-luks-sha512-a... - see Conclusion 2). Example: # df -h /boot/ Filesystem Size Used Avail Use% Mounted on /dev/mapper/boot_crypt 233M 120M 109M 53% /boot cryptsetup luksDump /dev/nvme0n1p1 ... Key Slot 0: ENABLED Iterations: 3628290 ... Key Slot 1: ENABLED Iterations: 3634578 I would appreciate, if this rather high delay (even on a Ryzen 7 1700X CPU) could be seriously reduced - the kernel loads this (and many more) partition quite imperceptible. -- You are receiving this mail because: You are on the CC list for the bug.