This changes the x86 image generation to match x86_64, using the PARTUUID for the rootfs instead of explicitly configuring the device.
This unbreaks KVM with VirtIO, which uses /dev/vda2 instead of /dev/sda2. Tested in QEMU/KVM with VirtIO, VirtualBox and VMware. Signed-off-by: Matthias Schiffer <mschif...@universe-factory.net> --- config/Config-images.in | 2 -- target/linux/x86/image/Makefile | 4 +++- target/linux/x86/image/gen_image_generic.sh | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/config/Config-images.in b/config/Config-images.in index 5c2e79e..a420c39 100644 --- a/config/Config-images.in +++ b/config/Config-images.in @@ -267,8 +267,6 @@ menu "Target Images" config TARGET_ROOTFS_PARTNAME string "Root partition on target device" depends on OLPC_BOOTSCRIPT_IMAGES || GRUB_IMAGES - default "/dev/xvda2" if TARGET_x86_xen_domu - default "/dev/sda2" if TARGET_x86 && ! TARGET_x86_xen_domu help Override the root partition on the final device. If left empty, it will be mounted by PARTUUID which makes the kernel find the diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile index 5983718..a0045a7 100644 --- a/target/linux/x86/image/Makefile +++ b/target/linux/x86/image/Makefile @@ -40,7 +40,9 @@ ifneq ($(GRUB_TERMINALS),) GRUB_TERMINAL_CONFIG := terminal_input $(GRUB_TERMINALS); terminal_output $(GRUB_TERMINALS) endif +SIGNATURE:=$(shell dd if=/dev/urandom bs=4 count=1 2>/dev/null | hexdump -v -e '"%02x"') ROOTPART:=$(call qstrip,$(CONFIG_TARGET_ROOTFS_PARTNAME)) +ROOTPART:=$(if $(ROOTPART),$(ROOTPART),PARTUUID=$(SIGNATURE)-02) GRUB_TIMEOUT:=$(call qstrip,$(CONFIG_GRUB_TIMEOUT)) @@ -82,7 +84,7 @@ ifneq ($(CONFIG_GRUB_IMAGES),) -e 's#@CMDLINE@#$(strip $(call Image/cmdline/$(1)) $(BOOTOPTS) $(GRUB_CONSOLE_CMDLINE))#g' \ -e 's#@TIMEOUT@#$(GRUB_TIMEOUT)#g' \ ./grub.cfg > $(KDIR)/root.grub/boot/grub/grub.cfg - PADDING="$(CONFIG_TARGET_IMAGES_PAD)" PATH="$(TARGET_PATH)" ./gen_image_generic.sh \ + PADDING="$(CONFIG_TARGET_IMAGES_PAD)" SIGNATURE="$(SIGNATURE)" PATH="$(TARGET_PATH)" ./gen_image_generic.sh \ $(BIN_DIR)/$(IMG_PREFIX)-combined-$(1).img \ $(CONFIG_TARGET_KERNEL_PARTSIZE) $(KDIR)/root.grub \ $(CONFIG_TARGET_ROOTFS_PARTSIZE) $(KDIR)/root.$(1) \ diff --git a/target/linux/x86/image/gen_image_generic.sh b/target/linux/x86/image/gen_image_generic.sh index 9d11efb..3fb31f6 100755 --- a/target/linux/x86/image/gen_image_generic.sh +++ b/target/linux/x86/image/gen_image_generic.sh @@ -20,7 +20,7 @@ sect=63 cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512))) # create partition table -set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN}` +set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m ${ALIGN:+-l $ALIGN} ${SIGNATURE:+-S 0x$SIGNATURE}` KERNELOFFSET="$(($1 / 512))" KERNELSIZE="$(($2 / 512))" -- 2.3.2 _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel