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banan-os
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BuildSystem: Optimize image creation 

We now use truncate to create disk image, since it doesn't require
writing zeroes to full disk. I also removed creation of third
partition as this was not currently used.
This commit is contained in:
Bananymous 2023-09-25 13:15:55 +03:00
parent 18d582c6ce
commit 3ea707c0e7
1 changed files with 4 additions and 12 deletions
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16
image-full.sh
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@ -4,7 +4,8 @@ set -e
DISK_SIZE=$[50 * 1024 * 1024] DISK_SIZE=$[50 * 1024 * 1024]
MOUNT_DIR=/mnt MOUNT_DIR=/mnt
dd if=/dev/zero of=$DISK_IMAGE_PATH bs=512 count=$[$DISK_SIZE / 512] > /dev/null truncate -s 0 $DISK_IMAGE_PATH
truncate -s $DISK_SIZE $DISK_IMAGE_PATH
sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk $DISK_IMAGE_PATH > /dev/null sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk $DISK_IMAGE_PATH > /dev/null
g # gpt g # gpt
@ -12,10 +13,6 @@ sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk $DISK_IMAGE_PATH > /dev/n
1 # partition number 1 1 # partition number 1
# default (from the beginning of the disk) # default (from the beginning of the disk)
+1MiB # bios boot partiton size +1MiB # bios boot partiton size
n # new partition
3 # partition number 3
# default (right after bios boot partition)
+10Mib# partition size
n # new partition n # new partition
2 # partition number 2 2 # partition number 2
# default (right after bios boot partition) # default (right after bios boot partition)
@ -26,9 +23,6 @@ sed -e 's/\s*\([-\+[:alnum:]]*\).*/\1/' << EOF | fdisk $DISK_IMAGE_PATH > /dev/n
t # set type t # set type
2 # ... of partition 2 2 # ... of partition 2
20 # Linux filesystem 20 # Linux filesystem
t # set type
3 # ... of partition 3
20 # Linux filesystem
w # write changes w # write changes
EOF EOF
@ -37,13 +31,11 @@ sudo partprobe $LOOP_DEV
PARTITION1=${LOOP_DEV}p1 PARTITION1=${LOOP_DEV}p1
PARTITION2=${LOOP_DEV}p2 PARTITION2=${LOOP_DEV}p2
PARTITION3=${LOOP_DEV}p3
sudo mkfs.ext2 $PARTITION3 > /dev/null sudo mkfs.ext2 -d $SYSROOT -b 1024 -q $PARTITION2
sudo mkfs.ext2 -d $SYSROOT $PARTITION2 > /dev/null
sudo mount $PARTITION2 $MOUNT_DIR sudo mount $PARTITION2 $MOUNT_DIR
sudo grub-install --no-floppy --target=i386-pc --modules="normal ext2 multiboot" --boot-directory=${MOUNT_DIR}/boot $LOOP_DEV > /dev/null sudo grub-install --no-floppy --target=i386-pc --modules="normal ext2 multiboot" --boot-directory=${MOUNT_DIR}/boot $LOOP_DEV
sudo umount $MOUNT_DIR sudo umount $MOUNT_DIR
sudo losetup -d $LOOP_DEV sudo losetup -d $LOOP_DEV