Merge remote-tracking branch 'kwolf/for-anthony' into staging

# By Kevin Wolf (7) and Fam Zheng (3)
# Via Kevin Wolf
* kwolf/for-anthony:
  qemu-iotests: fix 017 018 for vmdk
  qemu-iotests: exclude vmdk and qcow from 043
  qemu-iotests: exclude vmdk for test 042
  qtest/ide-test: Test short and long PRDTs
  qtest/ide-test: Add simple DMA read/write test case
  qtest: Add IDE test case
  libqos/pci: Enable bus mastering
  ide: Reset BMIDEA bit when the bus master is stopped
  de_DE.po: Add missing leading spaces
  ahci: Don't allow creating slave drives

Message-id: 1368023344-29731-1-git-send-email-kwolf@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2013-05-08 15:54:36 -05:00
commit cad2b59c19
20 changed files with 474 additions and 18 deletions

View file

@ -1163,7 +1163,7 @@ void ahci_init(AHCIState *s, DeviceState *qdev, DMAContext *dma, int ports)
for (i = 0; i < s->ports; i++) {
AHCIDevice *ad = &s->dev[i];
ide_bus_new(&ad->port, qdev, i);
ide_bus_new(&ad->port, qdev, i, 1);
ide_init2(&ad->port, irqs[i]);
ad->hba = s;

View file

@ -281,7 +281,7 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_bus_new(&d->bus[i], &d->dev.qdev, i, 2);
ide_init2(&d->bus[i], irq[i]);
bmdma_init(&d->bus[i], &d->bmdma[i], d);

View file

@ -450,6 +450,7 @@ struct IDEBus {
IDEDevice *slave;
IDEState ifs[2];
int bus_id;
int max_units;
IDEDMA *dma;
uint8_t unit;
uint8_t cmd;
@ -574,7 +575,7 @@ void ide_atapi_cmd(IDEState *s);
void ide_atapi_cmd_reply_end(IDEState *s);
/* hw/ide/qdev.c */
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id);
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id, int max_units);
IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive);
#endif /* HW_IDE_INTERNAL_H */

View file

@ -69,7 +69,7 @@ static int isa_ide_initfn(ISADevice *dev)
{
ISAIDEState *s = ISA_IDE(dev);
ide_bus_new(&s->bus, DEVICE(dev), 0);
ide_bus_new(&s->bus, DEVICE(dev), 0, 2);
ide_init_ioport(&s->bus, dev, s->iobase, s->iobase2);
isa_init_irq(dev, &s->irq, s->isairq);
ide_init2(&s->bus, s->irq);

View file

@ -334,7 +334,7 @@ static void macio_ide_initfn(Object *obj)
SysBusDevice *d = SYS_BUS_DEVICE(obj);
MACIOIDEState *s = MACIO_IDE(obj);
ide_bus_new(&s->bus, DEVICE(obj), 0);
ide_bus_new(&s->bus, DEVICE(obj), 0, 2);
memory_region_init_io(&s->mem, &pmac_ide_ops, s, "pmac-ide", 0x1000);
sysbus_init_mmio(d, &s->mem);
sysbus_init_irq(d, &s->irq);

View file

@ -137,7 +137,7 @@ static void mmio_ide_initfn(Object *obj)
SysBusDevice *d = SYS_BUS_DEVICE(obj);
MMIOState *s = MMIO_IDE(obj);
ide_bus_new(&s->bus, DEVICE(obj), 0);
ide_bus_new(&s->bus, DEVICE(obj), 0, 2);
sysbus_init_irq(d, &s->irq);
}

View file

@ -312,6 +312,7 @@ void bmdma_cmd_writeb(BMDMAState *bm, uint32_t val)
bdrv_drain_all();
assert(bm->bus->dma->aiocb == NULL);
}
bm->status &= ~BM_STATUS_DMAING;
} else {
bm->cur_addr = bm->addr;
if (!(bm->status & BM_STATUS_DMAING)) {

View file

@ -135,7 +135,7 @@ static void pci_piix_init_ports(PCIIDEState *d) {
int i;
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_bus_new(&d->bus[i], &d->dev.qdev, i, 2);
ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
port_info[i].iobase2);
ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));

View file

@ -47,10 +47,11 @@ static const TypeInfo ide_bus_info = {
.class_init = ide_bus_class_init,
};
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id)
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id, int max_units)
{
qbus_create_inplace(&idebus->qbus, TYPE_IDE_BUS, dev, NULL);
idebus->bus_id = bus_id;
idebus->max_units = max_units;
}
static char *idebus_get_fw_dev_path(DeviceState *dev)
@ -76,6 +77,13 @@ static int ide_qdev_init(DeviceState *qdev)
if (dev->unit == -1) {
dev->unit = bus->master ? 1 : 0;
}
if (dev->unit >= bus->max_units) {
error_report("Can't create IDE unit %d, bus supports only %d units",
dev->unit, bus->max_units);
goto err;
}
switch (dev->unit) {
case 0:
if (bus->master) {

View file

@ -158,7 +158,7 @@ static void vt82c686b_init_ports(PCIIDEState *d) {
int i;
for (i = 0; i < 2; i++) {
ide_bus_new(&d->bus[i], &d->dev.qdev, i);
ide_bus_new(&d->bus[i], &d->dev.qdev, i, 2);
ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
port_info[i].iobase2);
ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));

View file

@ -18,11 +18,11 @@ msgstr ""
#: ../ui/gtk.c:213
msgid " - Press Ctrl+Alt+G to release grab"
msgstr "- Strg+Alt+G drücken, um Eingabegeräte freizugeben"
msgstr " - Strg+Alt+G drücken, um Eingabegeräte freizugeben"
#: ../ui/gtk.c:217
msgid " [Paused]"
msgstr "[Angehalten]"
msgstr " [Angehalten]"
#: ../ui/gtk.c:1250
msgid "_Machine"

View file

@ -51,6 +51,7 @@ check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
# really in libqtest, not in the testcases themselves.
check-qtest-i386-y = tests/fdc-test$(EXESUF)
gcov-files-i386-y = hw/fdc.c
check-qtest-i386-y += tests/ide-test$(EXESUF)
check-qtest-i386-y += tests/hd-geo-test$(EXESUF)
gcov-files-i386-y += hw/hd-geometry.c
check-qtest-i386-y += tests/rtc-test$(EXESUF)
@ -127,6 +128,7 @@ libqos-omap-obj-y = $(libqos-obj-y) tests/libqos/i2c-omap.o
tests/rtc-test$(EXESUF): tests/rtc-test.o
tests/m48t59-test$(EXESUF): tests/m48t59-test.o
tests/fdc-test$(EXESUF): tests/fdc-test.o
tests/ide-test$(EXESUF): tests/ide-test.o $(libqos-pc-obj-y)
tests/hd-geo-test$(EXESUF): tests/hd-geo-test.o
tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)
tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)

440
tests/ide-test.c Normal file
View file

@ -0,0 +1,440 @@
/*
* IDE test cases
*
* Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <glib.h>
#include "libqtest.h"
#include "libqos/pci-pc.h"
#include "libqos/malloc-pc.h"
#include "qemu-common.h"
#include "hw/pci/pci_ids.h"
#include "hw/pci/pci_regs.h"
#define TEST_IMAGE_SIZE 64 * 1024 * 1024
#define IDE_PCI_DEV 1
#define IDE_PCI_FUNC 1
#define IDE_BASE 0x1f0
#define IDE_PRIMARY_IRQ 14
enum {
reg_data = 0x0,
reg_nsectors = 0x2,
reg_lba_low = 0x3,
reg_lba_middle = 0x4,
reg_lba_high = 0x5,
reg_device = 0x6,
reg_status = 0x7,
reg_command = 0x7,
};
enum {
BSY = 0x80,
DRDY = 0x40,
DF = 0x20,
DRQ = 0x08,
ERR = 0x01,
};
enum {
LBA = 0x40,
};
enum {
bmreg_cmd = 0x0,
bmreg_status = 0x2,
bmreg_prdt = 0x4,
};
enum {
CMD_READ_DMA = 0xc8,
CMD_WRITE_DMA = 0xca,
CMD_IDENTIFY = 0xec,
CMDF_ABORT = 0x100,
};
enum {
BM_CMD_START = 0x1,
BM_CMD_WRITE = 0x8, /* write = from device to memory */
};
enum {
BM_STS_ACTIVE = 0x1,
BM_STS_ERROR = 0x2,
BM_STS_INTR = 0x4,
};
enum {
PRDT_EOT = 0x80000000,
};
#define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
#define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
static QPCIBus *pcibus = NULL;
static QGuestAllocator *guest_malloc;
static char tmp_path[] = "/tmp/qtest.XXXXXX";
static void ide_test_start(const char *cmdline_fmt, ...)
{
va_list ap;
char *cmdline;
va_start(ap, cmdline_fmt);
cmdline = g_strdup_vprintf(cmdline_fmt, ap);
va_end(ap);
qtest_start(cmdline);
qtest_irq_intercept_in(global_qtest, "ioapic");
guest_malloc = pc_alloc_init();
}
static void ide_test_quit(void)
{
qtest_quit(global_qtest);
}
static QPCIDevice *get_pci_device(uint16_t *bmdma_base)
{
QPCIDevice *dev;
uint16_t vendor_id, device_id;
if (!pcibus) {
pcibus = qpci_init_pc();
}
/* Find PCI device and verify it's the right one */
dev = qpci_device_find(pcibus, QPCI_DEVFN(IDE_PCI_DEV, IDE_PCI_FUNC));
g_assert(dev != NULL);
vendor_id = qpci_config_readw(dev, PCI_VENDOR_ID);
device_id = qpci_config_readw(dev, PCI_DEVICE_ID);
g_assert(vendor_id == PCI_VENDOR_ID_INTEL);
g_assert(device_id == PCI_DEVICE_ID_INTEL_82371SB_1);
/* Map bmdma BAR */
*bmdma_base = (uint16_t)(uintptr_t) qpci_iomap(dev, 4);
qpci_device_enable(dev);
return dev;
}
static void free_pci_device(QPCIDevice *dev)
{
/* libqos doesn't have a function for this, so free it manually */
g_free(dev);
}
typedef struct PrdtEntry {
uint32_t addr;
uint32_t size;
} QEMU_PACKED PrdtEntry;
#define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
#define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
static int send_dma_request(int cmd, uint64_t sector, int nb_sectors,
PrdtEntry *prdt, int prdt_entries)
{
QPCIDevice *dev;
uint16_t bmdma_base;
uintptr_t guest_prdt;
size_t len;
bool from_dev;
uint8_t status;
int flags;
dev = get_pci_device(&bmdma_base);
flags = cmd & ~0xff;
cmd &= 0xff;
switch (cmd) {
case CMD_READ_DMA:
from_dev = true;
break;
case CMD_WRITE_DMA:
from_dev = false;
break;
default:
g_assert_not_reached();
}
/* Select device 0 */
outb(IDE_BASE + reg_device, 0 | LBA);
/* Stop any running transfer, clear any pending interrupt */
outb(bmdma_base + bmreg_cmd, 0);
outb(bmdma_base + bmreg_status, BM_STS_INTR);
/* Setup PRDT */
len = sizeof(*prdt) * prdt_entries;
guest_prdt = guest_alloc(guest_malloc, len);
memwrite(guest_prdt, prdt, len);
outl(bmdma_base + bmreg_prdt, guest_prdt);
/* ATA DMA command */
outb(IDE_BASE + reg_nsectors, nb_sectors);
outb(IDE_BASE + reg_lba_low, sector & 0xff);
outb(IDE_BASE + reg_lba_middle, (sector >> 8) & 0xff);
outb(IDE_BASE + reg_lba_high, (sector >> 16) & 0xff);
outb(IDE_BASE + reg_command, cmd);
/* Start DMA transfer */
outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
if (flags & CMDF_ABORT) {
outb(bmdma_base + bmreg_cmd, 0);
}
/* Wait for the DMA transfer to complete */
do {
status = inb(bmdma_base + bmreg_status);
} while ((status & (BM_STS_ACTIVE | BM_STS_INTR)) == BM_STS_ACTIVE);
g_assert_cmpint(get_irq(IDE_PRIMARY_IRQ), ==, !!(status & BM_STS_INTR));
/* Check IDE status code */
assert_bit_set(inb(IDE_BASE + reg_status), DRDY);
assert_bit_clear(inb(IDE_BASE + reg_status), BSY | DRQ);
/* Reading the status register clears the IRQ */
g_assert(!get_irq(IDE_PRIMARY_IRQ));
/* Stop DMA transfer if still active */
if (status & BM_STS_ACTIVE) {
outb(bmdma_base + bmreg_cmd, 0);
}
free_pci_device(dev);
return status;
}
static void test_bmdma_simple_rw(void)
{
uint8_t status;
uint8_t *buf;
uint8_t *cmpbuf;
size_t len = 512;
uintptr_t guest_buf = guest_alloc(guest_malloc, len);
PrdtEntry prdt[] = {
{ .addr = guest_buf, .size = len | PRDT_EOT },
};
buf = g_malloc(len);
cmpbuf = g_malloc(len);
/* Write 0x55 pattern to sector 0 */
memset(buf, 0x55, len);
memwrite(guest_buf, buf, len);
status = send_dma_request(CMD_WRITE_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Write 0xaa pattern to sector 1 */
memset(buf, 0xaa, len);
memwrite(guest_buf, buf, len);
status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Read and verify 0x55 pattern in sector 0 */
memset(cmpbuf, 0x55, len);
status = send_dma_request(CMD_READ_DMA, 0, 1, prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
memread(guest_buf, buf, len);
g_assert(memcmp(buf, cmpbuf, len) == 0);
/* Read and verify 0xaa pattern in sector 1 */
memset(cmpbuf, 0xaa, len);
status = send_dma_request(CMD_READ_DMA, 1, 1, prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
memread(guest_buf, buf, len);
g_assert(memcmp(buf, cmpbuf, len) == 0);
g_free(buf);
g_free(cmpbuf);
}
static void test_bmdma_short_prdt(void)
{
uint8_t status;
PrdtEntry prdt[] = {
{ .addr = 0, .size = 0x10 | PRDT_EOT },
};
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, 0);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
static void test_bmdma_long_prdt(void)
{
uint8_t status;
PrdtEntry prdt[] = {
{ .addr = 0, .size = 0x1000 | PRDT_EOT },
};
/* Normal request */
status = send_dma_request(CMD_READ_DMA, 0, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_ACTIVE | BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
/* Abort the request before it completes */
status = send_dma_request(CMD_READ_DMA | CMDF_ABORT, 0, 1,
prdt, ARRAY_SIZE(prdt));
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
}
static void test_bmdma_setup(void)
{
ide_test_start(
"-vnc none "
"-drive file=%s,if=ide,serial=%s,cache=writeback "
"-global ide-hd.ver=%s",
tmp_path, "testdisk", "version");
}
static void test_bmdma_teardown(void)
{
ide_test_quit();
}
static void test_identify(void)
{
uint8_t data;
uint16_t buf[256];
int i;
int ret;
ide_test_start(
"-vnc none "
"-drive file=%s,if=ide,serial=%s,cache=writeback "
"-global ide-hd.ver=%s",
tmp_path, "testdisk", "version");
/* IDENTIFY command on device 0*/
outb(IDE_BASE + reg_device, 0);
outb(IDE_BASE + reg_command, CMD_IDENTIFY);
/* Read in the IDENTIFY buffer and check registers */
data = inb(IDE_BASE + reg_device);
g_assert_cmpint(data & 0x10, ==, 0);
for (i = 0; i < 256; i++) {
data = inb(IDE_BASE + reg_status);
assert_bit_set(data, DRDY | DRQ);
assert_bit_clear(data, BSY | DF | ERR);
((uint16_t*) buf)[i] = inw(IDE_BASE + reg_data);
}
data = inb(IDE_BASE + reg_status);
assert_bit_set(data, DRDY);
assert_bit_clear(data, BSY | DF | ERR | DRQ);
/* Check serial number/version in the buffer */
ret = memcmp(&buf[10], "ettsidks ", 20);
g_assert(ret == 0);
ret = memcmp(&buf[23], "evsroi n", 8);
g_assert(ret == 0);
/* Write cache enabled bit */
assert_bit_set(buf[85], 0x20);
ide_test_quit();
}
int main(int argc, char **argv)
{
const char *arch = qtest_get_arch();
int fd;
int ret;
/* Check architecture */
if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
g_test_message("Skipping test for non-x86\n");
return 0;
}
/* Create a temporary raw image */
fd = mkstemp(tmp_path);
g_assert(fd >= 0);
ret = ftruncate(fd, TEST_IMAGE_SIZE);
g_assert(ret == 0);
close(fd);
/* Run the tests */
g_test_init(&argc, &argv, NULL);
qtest_add_func("/ide/identify", test_identify);
qtest_add_func("/ide/bmdma/setup", test_bmdma_setup);
qtest_add_func("/ide/bmdma/simple_rw", test_bmdma_simple_rw);
qtest_add_func("/ide/bmdma/short_prdt", test_bmdma_short_prdt);
qtest_add_func("/ide/bmdma/long_prdt", test_bmdma_long_prdt);
qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown);
ret = g_test_run();
/* Cleanup */
unlink(tmp_path);
return ret;
}

View file

@ -71,7 +71,7 @@ void qpci_device_enable(QPCIDevice *dev)
/* FIXME -- does this need to be a bus callout? */
cmd = qpci_config_readw(dev, PCI_COMMAND);
cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
qpci_config_writew(dev, PCI_COMMAND, cmd);
}

View file

@ -46,6 +46,8 @@ _supported_os Linux
TEST_OFFSETS="0 4294967296"
TEST_IMG_SAVE=$TEST_IMG
TEST_IMG=$TEST_IMG.base
_make_test_img 6G
echo "Filling base image"
@ -63,7 +65,7 @@ _check_test_img
echo "Creating test image with backing file"
echo
mv $TEST_IMG $TEST_IMG.base
TEST_IMG=$TEST_IMG_SAVE
_make_test_img -b $TEST_IMG.base 6G
echo "Filling test image"

View file

@ -1,5 +1,5 @@
QA output created by 017
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=6442450944
Filling base image
=== IO: pattern 0

View file

@ -46,6 +46,8 @@ _supported_os Linux
TEST_OFFSETS="0 4294967296"
TEST_IMG_SAVE=$TEST_IMG
TEST_IMG=$TEST_IMG.base
_make_test_img 6G
echo "Filling base image"
@ -63,7 +65,7 @@ _check_test_img
echo "Creating test image with backing file"
echo
mv $TEST_IMG $TEST_IMG.base
TEST_IMG=$TEST_IMG_SAVE
_make_test_img -b $TEST_IMG.base 6G
echo "Filling test image"

View file

@ -1,5 +1,5 @@
QA output created by 018
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=6442450944
Filling base image
=== IO: pattern 0

View file

@ -38,7 +38,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
. ./common.rc
. ./common.filter
_supported_fmt qcow2 qcow qed vmdk
_supported_fmt qcow2 qcow qed
_supported_proto file
_supported_os Linux

View file

@ -40,7 +40,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
. ./common.filter
# Any format supporting backing files
_supported_fmt qcow qcow2 vmdk qed
_supported_fmt qcow2 qed
_supported_proto generic
_supported_os Linux