support /dev/vda as a disk as well as /dev/sda and mount one for xhyve run

Signed-off-by: Justin Cormack <justin.cormack@unikernel.com>

alpine/etc/init.d/automount

@@ -10,8 +10,7 @@ start()
 {
 	ebegin "Configuring host block device"
 
-	# XXX this may change on other ports
-	DEV="sda"
+	DEV="$(ls /dev/[xv]da | head -1 | sed s@/dev/@@)"
 	DRIVE="/dev/${DEV}"
 	SWAP="${DRIVE}1"
 	DATA="${DRIVE}2"

xhyve/.gitignore

@@ -1 +1,2 @@
 /build/
+disk.img

xhyve/Makefile

@@ -106,7 +106,10 @@ $(TARGET): $(TARGET).sym
 	@echo strip $(notdir $@)
 	$(VERBOSE) $(ENV) $(STRIP) $(TARGET).sym -o $@
 
-run: $(TARGET)
+disk.img:
+	dd if=/dev/zero of=disk.img bs=4096 count=100k
+
+run: $(TARGET) disk.img
 	./xhyverun.sh || true
 
 clean:

xhyve/xhyverun.sh

@@ -14,7 +14,7 @@ else
 NET="-s 2:0,virtio-net"
 fi
 #IMG_CD="-s 3,ahci-cd,/somepath/somefile.iso"
-#IMG_HDD="-s 4,virtio-blk,/somepath/somefile.img"
+IMG_HDD="-s 4,virtio-blk,disk.img"
 PCI_DEV="-s 0:0,hostbridge -s 31,lpc"
 RND="-s 5,virtio-rnd"
 LPC_DEV="-l com1,stdio"