customizable swap and partition sizes
This commit is contained in:
bill-auger
parent
8f072b4ee1
commit
85e54ebe4b
@ -134,6 +134,18 @@ pvm_guess_qemu_args() {
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# if we're running a supported arch, enable kvm
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if pvm_native_arch "$2"; then qemu_args+=(-enable-kvm); fi
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# find root filesystem partition (necessary for arches without bootloader)
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local root_loopdev_n=$(echo $(parted "$1" print 2> /dev/null | grep ext4) | cut -d ' ' -f 1)
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local root_loopdev="$loopdev"p$root_loopdev_n
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local root_vdev=/dev/vda$root_loopdev_n
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if [[ -b "$root_loopdev" ]]
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then
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msg "found root filesystem loop device: %s" "$root_loopdev"
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else
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error "%s: unable to determine root filesystem loop device" "$1"
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return "$EXIT_FAILURE"
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fi
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# set arch-specific args
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local kernel_console
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case "$2" in
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@ -147,7 +159,7 @@ pvm_guess_qemu_args() {
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-m $DEF_RAM_MB
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-kernel "$workdir"/vmlinuz-${Kernel}
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-initrd "$workdir"/initramfs-${Kernel}.img
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-append "${kernel_console}rw root=/dev/vda3"
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-append "${kernel_console}rw root=${root_vdev}"
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-drive "if=none,file=$1,format=raw,id=hd"
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-device "virtio-blk-device,drive=hd"
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-netdev "user,id=mynet"
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@ -158,7 +170,7 @@ pvm_guess_qemu_args() {
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-m $DEF_RAM_MB
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-kernel "$workdir"/bbl
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-append "${kernel_console}rw root=/dev/vda"
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-drive "file=${loopdev}p3,format=raw,id=hd0"
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-drive "file=${root_vdev},format=raw,id=hd0"
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-device "virtio-blk-device,drive=hd0"
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-object "rng-random,filename=/dev/urandom,id=rng0"
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-device "virtio-rng-device,rng=rng0"
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@ -28,6 +28,9 @@ readonly DEF_PKGS=('base' 'parabola-base' 'openssh')
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readonly DEF_KERNEL='linux-libre' # ASSERT: must be 'linux-libre', per 'parabola-base'
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readonly DEF_MIRROR="https://repo.parabola.nu/\$repo/os/\$arch"
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readonly DEF_IMG_GB=64
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readonly MIN_GB=1
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readonly DEF_BOOT_MB=100
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readonly DEF_SWAP_MB=0
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# misc
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readonly THIS_DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"
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@ -39,12 +42,16 @@ Mirror=$DEF_MIRROR
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IsNonsystemd=0
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Pkgs=()
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ImgSizeGb=$DEF_IMG_GB
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BootSizeMb=$DEF_BOOT_MB
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SwapSizeMb=$DEF_SWAP_MB
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HasSwap=0
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usage() {
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print "USAGE:"
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print " pvmbootstrap [-h] [-H <hook> ] [-k <kernel> ] [-M <mirror> ]"
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print " [-O] [-p <package>] [-s <img_size>] <img> <arch>"
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print " [-O] [-p <package>] [-s <img_size>] [-S <swap_size>]"
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print " <img> <arch>"
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echo
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prose "Produce preconfigured parabola GNU/Linux-libre virtual machine instances."
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echo
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@ -70,6 +77,7 @@ usage() {
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echo " -p <package> Specify additional packages to be installed in the VM image."
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echo " This option can be specified multiple times."
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echo " -s <img_size> Set the size (in GB) of the VM image (minimum: $MIN_GB, default: $DEF_IMG_GB)"
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echo " -S <swap_size> Set the size (in MB) of the swap partition (default: $DEF_SWAP_MB)"
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echo
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echo "Pre-defined hooks:"
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echo " ethernet-dhcp: Configure and enable an ethernet device in the virtual"
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@ -102,70 +110,72 @@ pvm_bootstrap() {
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sudo dd if=/dev/zero of="$loopdev" bs=1M count=8 || return "$EXIT_FAILURE"
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# partition
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msg "partitioning blank image"
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local boot_begin="$( [[ "$arch" =~ i686|x86_64 ]] && echo 2 || echo 1 )MiB"
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local boot_end="$(( ${boot_begin/MiB} + $BootSizeMb ))MiB"
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local swap_begin=${boot_end}
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local swap_end="$(( ${swap_begin/MiB} + $SwapSizeMb ))MiB"
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local root_begin=${swap_end}
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local legacy_part boot_label boot_fs_type boot_flag
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case "$arch" in
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i686|x86_64)
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sudo parted -s "$loopdev" \
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mklabel gpt \
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mkpart primary 1MiB 2Mib \
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set 1 bios_grub on \
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mkpart primary ext2 2MiB 514MiB \
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mkpart primary linux-swap 514MiB 4610MiB \
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mkpart primary ext4 4610MiB 100% || return "$EXIT_FAILURE" ;;
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legacy_part='mkpart primary 1MiB 2Mib'
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boot_label='primary'
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boot_fs_type='ext2'
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boot_flag='bios_grub' ;; # legacy_part
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armv7h)
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sudo parted -s "$loopdev" \
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mklabel gpt \
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mkpart ESP fat32 1MiB 513MiB \
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set 1 boot on \
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mkpart primary linux-swap 513MiB 4609MiB \
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mkpart primary ext4 4609MiB 100% || return "$EXIT_FAILURE" ;;
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boot_label='ESP'
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boot_fs_type='fat32'
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boot_flag='boot' ;;
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ppc64le|riscv64)
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boot_label='primary'
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boot_fs_type='ext2'
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boot_flag='boot' ;;
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esac
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local swap_label='primary'
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local root_label='primary'
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local swap_part=$( (( $HasSwap )) && echo "mkpart $swap_label linux-swap $swap_begin $swap_end")
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msg "partitioning blank image"
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sudo parted -s "$loopdev" \
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mklabel gpt \
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mkpart primary ext2 1MiB 513MiB \
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set 1 boot on \
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mkpart primary linux-swap 513MiB 4609MiB \
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mkpart primary ext4 4609MiB 100% || return "$EXIT_FAILURE" ;;
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esac
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$legacy_part \
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mkpart $boot_label $boot_fs_type $boot_begin $boot_end \
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set 1 $boot_flag on \
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$swap_part \
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mkpart $root_label ext4 $root_begin 100% || return "$EXIT_FAILURE"
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# refresh partition data
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sudo partprobe "$loopdev"
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# make file systems
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local swapdev
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msg "creating target filesystems"
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local boot_mkfs_cmd boot_loopdev swap_loopdev root_loopdev
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case "$arch" in
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i686|x86_64)
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sudo mkfs.ext2 "$loopdev"p2 || return "$EXIT_FAILURE"
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sudo mkswap "$loopdev"p3 || return "$EXIT_FAILURE"
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sudo mkfs.ext4 "$loopdev"p4 || return "$EXIT_FAILURE"
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swapdev="$loopdev"p3 ;;
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boot_mkfs_cmd='mkfs.ext2'
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boot_loopdev="$loopdev"p2
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swap_loopdev="$loopdev"p3
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root_loopdev="$loopdev"p$( (( $HasSwap )) && echo 4 || echo 3 ) ;;
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armv7h)
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sudo mkfs.vfat -F 32 "$loopdev"p1 || return "$EXIT_FAILURE"
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sudo mkswap "$loopdev"p2 || return "$EXIT_FAILURE"
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sudo mkfs.ext4 "$loopdev"p3 || return "$EXIT_FAILURE"
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swapdev="$loopdev"p2 ;;
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boot_mkfs_cmd='mkfs.vfat -F 32'
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boot_loopdev="$loopdev"p1
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swap_loopdev="$loopdev"p2
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root_loopdev="$loopdev"p$( (( $HasSwap )) && echo 3 || echo 2 ) ;;
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ppc64le|riscv64)
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sudo mkfs.ext2 "$loopdev"p1 || return "$EXIT_FAILURE"
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sudo mkswap "$loopdev"p2 || return "$EXIT_FAILURE"
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sudo mkfs.ext4 "$loopdev"p3 || return "$EXIT_FAILURE"
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swapdev="$loopdev"p2 ;;
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boot_mkfs_cmd='mkfs.ext2'
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boot_loopdev="$loopdev"p1
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swap_loopdev="$loopdev"p2
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root_loopdev="$loopdev"p$( (( $HasSwap )) && echo 3 || echo 2 ) ;;
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esac
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msg "creating target filesystems"
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sudo $boot_mkfs_cmd "$boot_loopdev" || return "$EXIT_FAILURE"
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! (( $HasSwap )) || \
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sudo mkswap "$swap_loopdev" || return "$EXIT_FAILURE"
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sudo mkfs.ext4 "$root_loopdev" || return "$EXIT_FAILURE"
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# mount partitions
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msg "mounting target partitions"
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case "$arch" in
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i686|x86_64)
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sudo mount "$loopdev"p4 "$workdir" || return "$EXIT_FAILURE"
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sudo mount "$root_loopdev" "$workdir" || return "$EXIT_FAILURE"
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sudo mkdir -p "$workdir"/boot || return "$EXIT_FAILURE"
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sudo mount "$loopdev"p2 "$workdir"/boot || return "$EXIT_FAILURE"
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;;
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armv7h|ppc64le|riscv64)
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sudo mount "$loopdev"p3 "$workdir" || return "$EXIT_FAILURE"
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sudo mkdir -p "$workdir"/boot || return "$EXIT_FAILURE"
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sudo mount "$loopdev"p1 "$workdir"/boot || return "$EXIT_FAILURE"
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;;
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esac
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sudo mount "$boot_loopdev" "$workdir"/boot || return "$EXIT_FAILURE"
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# setup qemu-user-static, if necessary
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if ! pvm_native_arch "$arch"; then
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@ -227,11 +237,10 @@ pvm_bootstrap() {
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msg "generating /etc/fstab"
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case "$arch" in
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riscv64) ;;
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*)
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sudo swapoff --all
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sudo swapon "$swapdev"
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* ) sudo swapoff --all
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(( $HasSwap )) && sudo swapon "$swap_loopdev"
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genfstab -U "$workdir" | sudo tee "$workdir"/etc/fstab
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sudo swapoff "$swapdev"
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(( $HasSwap )) && sudo swapoff "$swap_loopdev"
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sudo swapon --all ;;
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esac
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@ -410,7 +419,7 @@ main() {
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fi
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# parse options
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while getopts 'hH:k:M:Op:s:' arg; do
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while getopts 'hH:k:M:Op:s:S:' arg; do
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case "$arg" in
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h) usage; return "$EXIT_SUCCESS";;
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H) if [ -e "$THIS_DIR/hooks/hook-$OPTARG.sh" ]; then # in-tree
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@ -427,6 +436,7 @@ main() {
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O) IsNonsystemd=0;; # TODO:
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p) Pkgs+=($OPTARG);;
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s) ImgSizeGb="$( sed 's|[^0-9]||g' <<<$OPTARG)";;
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S) SwapSizeMb="$(sed 's|[^0-9]||g' <<<$OPTARG)";;
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*) error "invalid argument: %s\n" "$arg"; usage >&2; exit "$EXIT_INVALIDARGUMENT";;
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esac
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done
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@ -435,8 +445,9 @@ main() {
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shift $shiftlen
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local file="$1"
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local arch="$2"
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local has_params=$( [ "$#" -eq 2 ] && echo 1 || echo 0 )
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local has_space=$( [ "$ImgSizeGb" -ge $MIN_GB ] && echo 1 || echo 0 )
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local has_params=$( (( $# == 2 )) && echo 1 || echo 0 )
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local has_space=$( (( ($ImgSizeGb*1000) >= ($MIN_GB*1000) + $SwapSizeMb )) && echo 1 || echo 0 )
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HasSwap=$( (( $SwapSizeMb > 0 )) && echo 1 || echo 0 )
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(( ! $has_params )) && error "insufficient arguments" && usage >&2 && exit "$EXIT_INVALIDARGUMENT"
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(( ! $has_space )) && error "image size too small" && usage >&2 && exit "$EXIT_INVALIDARGUMENT"
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