Reduce /var image size to 128M (resized at first boot anyway) and tune
mke2fs options for faster mounting. Set ext4 'uninit_bg' feature and
use '-m 0 -i 4096' extraargs in genimage to optimize filesystem creation
and reduce overhead. The genimage tool has several tweaks enabled by
default already, the 'uninit_bg' feature speeds up the time to check
the file system.
Disable periodic fsck with tune2fs at boot while keeping safety checks
intact. Adjust mount options in fstab to reduce journal syncs and
improve boot time.
Fix severe performance regression in find_partition_by_label() that was
calling sgdisk on every block device including virtual devices (ram, loop,
dm-mapper). This caused boot delays of up to 24 seconds on systems with
many block devices. Now skip virtual devices that don't have GPT tables,
reducing the delay to ~2 seconds.
Also clean up is_mmc() function to use cached result.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
U-Boot (2024.07) does not yet support the 'metadata_csum' feature flag
to Ext4 file systems. So let's disable it for now in mkaux.sh so we
can allow builds for, e.g., the R2S and VisionFive2 boards to modify
and save their U-Boot environment.
Needed on the NanoPi R2S to set ethaddr + eth1addr since it does not
have any VPD EEPROM mounted.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Joachim Wiberg