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Code Issues Projects Releases Wiki Activity

VirtualDisk: Rework provisioning and validation behavior

Browse Source 
We separate all the provisioning bits to diskbackend.py. VirtualDisk
users now need to explicitly opt in to storage creation by using
set_create_storage().

validation is no longer done automatically, users must call the
validation() command.

__init__ drops all extra parameters.

This will eventually get us to a point where we can unify the manual
XML building and XML parsing machinery, and get consistent validation
behavior between devices.
This commit is contained in:
Cole Robinson 2013-07-13 10:09:00 -04:00
parent d6f5c3a729
commit 4ce1774d53
46 changed files with 1067 additions and 1004 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tests/cli-test-xml/compare/clone-auto1.xml
View File

@ -20,10 +20,10 @@
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type="block" device="floppy">
<source dev="/disk-pool/diskvol1-clone"/>
<target dev="fda" bus="fdc"/>
<address type="drive" controller="0" bus="0" target="0" unit="0"/>
<driver name="qemu" type="raw"/>
<source dev="/disk-pool/diskvol1-clone"/>
</disk>
<disk type="block" device="disk">
<source dev="/disk-pool/diskvol2"/>
@ -46,13 +46,13 @@
<disk type="file" device="disk">
<target dev="hda" bus="ide"/>
<address type="drive" controller="0" bus="0" target="0" unit="0"/>
<driver name="qemu" type="raw"/>
<driver name="qemu"/>
<source file="/default-pool/default-vol-clone"/>
</disk>
<disk type="file" device="disk">
<target dev="hdb" bus="ide"/>
<address type="drive" controller="0" bus="0" target="0" unit="1"/>
<driver name="qemu" type="raw"/>
<driver name="qemu"/>
<source file="/default-pool/testvol2-clone.img"/>
</disk>
<controller type="scsi" index="0"/>

2
tests/clone-xml/empty-disks-out.xml
View File

@ -19,7 +19,7 @@
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type="block" device="disk">
<target dev="hda" bus="ide"/>
<source dev="/dev/loop0"/>
<source dev="/disk-pool/disk-vol1"/>
</disk>
<disk type="file" device="floppy">
<target dev="fdb" bus="fdc"/>

4
tests/clone-xml/force-out.xml
View File

@ -17,9 +17,9 @@
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type="block" device="disk">
<disk type="file" device="disk">
<target dev="hda" bus="ide"/>
<source dev="/dev/loop0"/>
<source file="/default-pool/1234.img"/>
</disk>
<disk type="block" device="floppy">
<target dev="fdb" bus="fdc"/>

2
tests/clone-xml/general-cfg-out.xml
View File

@ -19,7 +19,7 @@
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type="block" device="disk">
<target dev="hda" bus="ide"/>
<source dev="/dev/loop0"/>
<source dev="/disk-pool/disk-vol1"/>
</disk>
<disk type="file" device="disk">
<target dev="hdb" bus="ide"/>

1
tests/clone-xml/managed-storage-in.xml
View File

@ -18,6 +18,7 @@
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name="qemu" type="vmdk"/>
<source file='/default-pool/testvol1.img'/>
<target dev='hda' bus='ide'/>
</disk>

3
tests/clone-xml/managed-storage-out.xml
View File

@ -19,11 +19,12 @@
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type="file" device="disk">
<target dev="hda" bus="ide"/>
<driver type="vmdk"/>
<source file="/default-pool/new1.img"/>
</disk>
<disk type="block" device="disk">
<source dev="/disk-pool/new2.img"/>
<target dev="hdb" bus="ide"/>
<source dev="/disk-pool/new2.img"/>
</disk>
<interface type="network">
<mac address="22:23:45:67:89:00"/>

2
tests/clone-xml/readonly-disks-out.xml
View File

@ -19,7 +19,7 @@
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type="block" device="disk">
<target dev="hda" bus="ide"/>
<source dev="/dev/loop0"/>
<source dev="/disk-pool/disk-vol1"/>
</disk>
<disk type="file" device="disk">
<source file="/tmp/virtinst-test1.img"/>

4
tests/clone-xml/skip-out.xml
View File

@ -28,9 +28,9 @@
<target dev="sda" bus="scsi"/>
<readonly/>
</disk>
<disk type="block" device="disk">
<disk type="file" device="disk">
<target dev="sdb" bus="scsi"/>
<source dev="/dev/loop0"/>
<source file="/default-pool/1234.img"/>
</disk>
<interface type="network">
<mac address="22:23:45:67:89:00"/>

13
tests/clonetest.py
View File

@ -92,7 +92,7 @@ class TestClone(unittest.TestCase):
cloneobj.clone_macs = ["22:23:45:67:89:00", "22:23:45:67:89:01"]
if disks is None:
disks = ["/dev/loop0", "/tmp/clone2.img",
disks = ["/disk-pool/disk-vol1", "/tmp/clone2.img",
"/tmp/clone3.img", "/tmp/clone4.img",
"/tmp/clone5.img", None]
@ -166,7 +166,7 @@ class TestClone(unittest.TestCase):
# Exception expected
logging.debug("Received expected exception: %s", str(e))
def testCloneStorage(self):
def testCloneStorageManaged(self):
base = "managed-storage"
self._clone_helper(base, ["%s/new1.img" % POOL1,
"%s/new2.img" % DISKPOOL])
@ -179,13 +179,15 @@ class TestClone(unittest.TestCase):
def testCloneStorageForce(self):
base = "force"
self._clone_helper(base,
disks=["/dev/loop0", None, "/tmp/clone2.img"],
disks=["/default-pool/1234.img",
None, "/tmp/clone2.img"],
force_list=["hda", "fdb", "sdb"])
def testCloneStorageSkip(self):
base = "skip"
self._clone_helper(base,
disks=["/dev/loop0", None, "/tmp/clone2.img"],
disks=["/default-pool/1234.img",
None, "/tmp/clone2.img"],
skip_list=["hda", "fdb"])
def testCloneFullPool(self):
@ -206,7 +208,8 @@ class TestClone(unittest.TestCase):
# operation (no libvirt calls), but since /default-pool doesn't exist,
# this should fail.
try:
self._clone_helper(base, ["/tmp/new1.img", "/tmp/new2.img"])
self._clone_helper(base, ["/tmp/new1.img", "/tmp/new2.img"],
compare=False)
raise AssertionError("Managed to unmanaged succeeded, expected "
"failure.")

26
tests/utils.py
View File

@ -229,11 +229,11 @@ def make_pxe_installer(gtype="xen"):
return inst
def build_win_kvm(path=None):
def build_win_kvm(path=None, fake=True):
g = get_basic_fullyvirt_guest("kvm")
g.os_type = "windows"
g.os_variant = "winxp"
g.add_device(get_filedisk(path))
g.add_device(get_filedisk(path, fake=fake))
g.add_device(get_blkdisk())
g.add_device(get_virtual_network())
g.add_device(VirtualAudio(g.conn))
@ -245,17 +245,31 @@ def build_win_kvm(path=None):
def get_floppy(path=None):
if not path:
path = "/default-pool/testvol1.img"
return VirtualDisk(_conn, path, device=VirtualDisk.DEVICE_FLOPPY)
d = VirtualDisk(_conn)
d.path = path
d.device = d.DEVICE_FLOPPY
d.validate()
return d
def get_filedisk(path=None):
def get_filedisk(path=None, fake=True):
if not path:
path = "/tmp/test.img"
return VirtualDisk(_conn, path, size=.0001)
d = VirtualDisk(_conn)
d.path = path
size = None
if not fake:
size = .000001
d.set_create_storage(fake=fake, size=size)
d.validate()
return d
def get_blkdisk(path="/dev/loop0"):
return VirtualDisk(_conn, path)
d = VirtualDisk(_conn)
d.path = path
d.validate()
return d
def get_virtual_network():

32
tests/validation.py
View File

@ -15,7 +15,6 @@
# MA 02110-1301 USA.
import virtinst
from virtinst import VirtualDisk
from virtinst import Interface
from tests import utils
@ -102,29 +101,6 @@ args = {
},
'disk' : {
'init_conns' : [testconn, None],
'__init__' : {
'invalid' : [
{'path' : 'valid', 'size' : 1, 'driverCache' : 'invalid'},
{'conn' : testconn, "path" : "/full-pool/newvol.img", "size" : 1,
'sparse' : False},
# Inactive pool w/ volume
{'conn' : testconn, "path" : "/inactive-pool/inactive-vol"},
],
'valid' : [
{'conn' : testconn, 'path' : "/default-pool/default-vol"},
{'conn' : testconn, 'path' : "/default-pool/vol-noexist", 'size' : 1},
{'conn' : testconn, 'volInstall': volinst},
# Full pool, but we are nonsparse
{'conn' : testconn, "path" : "/full-pool/newvol.img", "size" : 1},
]
},
},
'network' : {
'init_conns' : [testconn],
'__init__' : {
@ -323,6 +299,8 @@ class TestValidation(unittest.TestCase):
self._runObjInit(testclass, paramvalue)
else:
setattr(obj, paramname, paramvalue)
if hasattr(obj, "validate"):
obj.validate()
msg = ("Expected TypeError or ValueError: None Raised.\n"
"For '%s' object, paramname '%s', val '%s':" %
@ -353,6 +331,8 @@ class TestValidation(unittest.TestCase):
self._runObjInit(testclass, paramvalue)
else:
setattr(obj, paramname, paramvalue)
if hasattr(obj, "validate"):
obj.validate()
except Exception, e:
msg = ("Validation case failed, expected success.\n" +
"Exception received was: %s\n" % e +
@ -390,10 +370,6 @@ class TestValidation(unittest.TestCase):
g = virtinst.Guest(testconn, type="xen")
self._testArgs(g, virtinst.Guest, 'guest')
def testDiskValidation(self):
disk = VirtualDisk(testconn, "/dev/loop0")
self._testArgs(disk, VirtualDisk, 'disk')
def testNetworkValidation(self):
network = virtinst.VirtualNetworkInterface(testconn)
self._testArgs(network, virtinst.VirtualNetworkInterface, 'network')

2
tests/xmlconfig-xml/boot-many-disks2.xml
View File

@ -33,7 +33,7 @@
<readonly/>
</disk>
<disk type="block" device="disk">
<driver name="qemu" type="qcow2"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdd" bus="ide"/>
</disk>

2
tests/xmlconfig-xml/install-f10.xml
View File

@ -24,7 +24,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

2
tests/xmlconfig-xml/install-f11-ac97.xml
View File

@ -28,7 +28,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

2
tests/xmlconfig-xml/install-f11-noac97.xml
View File

@ -28,7 +28,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

2
tests/xmlconfig-xml/install-f11-qemu.xml
View File

@ -28,7 +28,7 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdb" bus="ide"/>
</disk>

2
tests/xmlconfig-xml/install-f11.xml
View File

@ -28,7 +28,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

4
tests/xmlconfig-xml/misc-qemu-driver-name.xml
View File

@ -20,12 +20,12 @@
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

2
tests/xmlconfig-xml/misc-qemu-driver-overwrite.xml
View File

@ -25,7 +25,7 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

2
tests/xmlconfig-xml/misc-qemu-driver-type.xml
View File

@ -30,7 +30,7 @@
<target dev="hdb" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

2
tests/xmlconfig-xml/misc-qemu-iso-disk.xml
View File

@ -25,7 +25,7 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

2
tests/xmlconfig-xml/rhel6-kvm-stage1.xml
View File

@ -30,7 +30,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

2
tests/xmlconfig-xml/rhel6-kvm-stage2.xml
View File

@ -28,7 +28,7 @@
<target dev="vda" bus="virtio"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="vdb" bus="virtio"/>
</disk>

4
tests/xmlconfig-xml/winxp-kvm-stage1.xml
View File

@ -24,12 +24,12 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdb" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

4
tests/xmlconfig-xml/winxp-kvm-stage2.xml
View File

@ -23,12 +23,12 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdb" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

4
tests/xmlconfig-xml/winxp-kvm-stage3.xml
View File

@ -23,12 +23,12 @@
<target dev="hda" bus="ide"/>
</disk>
<disk type="block" device="disk">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdb" bus="ide"/>
</disk>
<disk type="block" device="cdrom">
<driver name="qemu"/>
<driver name="qemu" type="raw"/>
<source dev="/dev/loop0"/>
<target dev="hdc" bus="ide"/>
<readonly/>

109
tests/xmlconfig.py
View File

@ -541,36 +541,56 @@ class TestXMLConfig(unittest.TestCase):
g.add_device(utils.get_filedisk())
g.add_device(utils.get_blkdisk())
g.add_device(VirtualDisk(g.conn, path="/dev/loop0",
device=VirtualDisk.DEVICE_CDROM,
driverType="raw"))
g.add_device(VirtualDisk(g.conn, path="/dev/loop0",
device=VirtualDisk.DEVICE_DISK,
driverName="qemu", format="qcow2"))
g.add_device(VirtualDisk(g.conn, path=None,
device=VirtualDisk.DEVICE_CDROM,
bus="scsi"))
d = VirtualDisk(g.conn, path=None,
device=VirtualDisk.DEVICE_FLOPPY)
d.iotune_tbs = 1
d.iotune_tis = 2
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.device = d.DEVICE_CDROM
d.driver_type = "raw"
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn, path="/dev/loop0",
device=VirtualDisk.DEVICE_FLOPPY,
driverName="phy")
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.device = d.DEVICE_DISK
d.driver_name = "qemu"
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = None
d.device = d.DEVICE_CDROM
d.bus = "scsi"
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = None
d.device = d.DEVICE_FLOPPY
d.iotune_tbs = 1
d.iotune_tis = 2
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.device = d.DEVICE_FLOPPY
d.driver_name = "phy"
d.driver_cache = "none"
d.iotune_rbs = 5555
d.iotune_ris = 1234
d.iotune_wbs = 3
d.iotune_wis = 4
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn, path="/dev/loop0",
bus="virtio", driverName="qemu",
driverType="qcow2")
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.bus = "virtio"
d.driver_name = "qemu"
d.driver_type = "qcow2"
d.driver_cache = "none"
d.driver_io = "threads"
d.validate()
g.add_device(d)
self._compare(g, "boot-many-disks2", False)
@ -701,14 +721,31 @@ class TestXMLConfig(unittest.TestCase):
g.add_device(VirtualAudio(g.conn, "es1370"))
# Disk devices
g.add_device(VirtualDisk(g.conn, path="/dev/loop0",
device=VirtualDisk.DEVICE_FLOPPY))
g.add_device(VirtualDisk(g.conn, path="/dev/loop0", bus="scsi"))
g.add_device(VirtualDisk(g.conn, path="/tmp", device="floppy"))
d3 = VirtualDisk(g.conn, path="/default-pool/testvol1.img",
bus="scsi", driverName="qemu")
d3.address.type = "spapr-vio"
g.add_device(d3)
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.device = d.DEVICE_FLOPPY
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = "/dev/loop0"
d.bus = "scsi"
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = "/tmp"
d.device = d.DEVICE_FLOPPY
d.validate()
g.add_device(d)
d = VirtualDisk(g.conn)
d.path = "/default-pool/testvol1.img"
d.bus = "scsi"
d.driver_name = "qemu"
d.address.type = "spapr-vio"
d.validate()
g.add_device(d)
# Controller devices
c1 = VirtualController.get_class_for_type(VirtualController.CONTROLLER_TYPE_IDE)(g.conn)
@ -863,9 +900,6 @@ class TestXMLConfig(unittest.TestCase):
self._compare(g, "boot-usb2", False)
#
# Full Install tests: try to mimic virt-install as much as possible
#
def testFullKVMRHEL6(self):
utils.set_conn(_plainkvm)
@ -874,7 +908,7 @@ class TestXMLConfig(unittest.TestCase):
gtype="kvm")
g = utils.get_basic_fullyvirt_guest("kvm", installer=i)
g.add_device(utils.get_floppy())
g.add_device(utils.get_filedisk("/default-pool/rhel6.img"))
g.add_device(utils.get_filedisk("/default-pool/rhel6.img", fake=False))
g.add_device(utils.get_blkdisk())
g.add_device(utils.get_virtual_network())
g.add_device(VirtualAudio(g.conn))
@ -893,7 +927,7 @@ class TestXMLConfig(unittest.TestCase):
def testFullKVMWinxp(self):
utils.set_conn(_plainkvm)
g = utils.build_win_kvm("/default-pool/winxp.img")
g = utils.build_win_kvm("/default-pool/winxp.img", fake=False)
self._testInstall(g, "winxp-kvm-stage1",
"winxp-kvm-stage3", "winxp-kvm-stage2")
@ -906,8 +940,10 @@ class TestXMLConfig(unittest.TestCase):
sizebytes = long(sizegigs * 1024L * 1024L * 1024L)
for sparse in [True, False]:
disk = VirtualDisk(utils.get_conn(), path=path, size=sizegigs,
sparse=sparse)
disk = VirtualDisk(utils.get_conn())
disk.path = path
disk.set_create_storage(size=sizegigs, sparse=sparse)
disk.validate()
disk.setup()
actualsize = long(os.path.getsize(path))
@ -970,8 +1006,9 @@ class TestXMLConfig(unittest.TestCase):
conn, "16")
def testManyVirtio(self):
d = VirtualDisk(utils.get_conn(), bus="virtio",
path="/default-pool/testvol1.img")
d = VirtualDisk(utils.get_conn())
d.bus = "virtio"
d.path = "/default-pool/testvol1.img"
targetlist = []
for ignore in range(0, (26 * 2) + 1):

4
tests/xmlparse-xml/change-disk-out.xml
View File

@ -18,10 +18,10 @@
<vcpu>5</vcpu>
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type="file" device="disk">
<source file="/dev/loop0"/>
<disk type="block" device="disk">
<target dev="hda" bus="ide"/>
<serial>frob</serial>
<source dev="/dev/loop0"/>
<driver name="test" type="raw"/>
</disk>
<disk type="block" device="disk">

6
tests/xmlparse-xml/change-media-out.xml
View File

@ -15,10 +15,10 @@
<driver name="qemu" type="qcow2"/>
<source file="/default-pool/default-vol"/>
</disk>
<disk type="file" device="cdrom">
<disk type="block" device="cdrom">
<target dev="hdb" bus="ide"/>
<driver name="qemu" type="qcow2"/>
<source file="/disk-pool/diskvol1"/>
<driver name="qemu" type="raw"/>
<source dev="/disk-pool/diskvol1"/>
</disk>
<disk type="block" device="cdrom">
<target dev="hdc" bus="ide"/>

11
tests/xmlparse.py
View File

@ -764,11 +764,18 @@ class XMLParseTest(unittest.TestCase):
# test000ClearProps resets the 'set' list, and this test
# ensures that every property we know about has been touched
# by one of the above tests.
from virtinst import XMLBuilderDomain
fail = [p for p in XMLBuilderDomain._allprops
if p not in XMLBuilderDomain._seenprops]
self.assertEquals(fail, [])
try:
self.assertEquals([], fail)
except AssertionError:
msg = "".join(traceback.format_exc()) + "\n\n"
msg += ("This means that there are XML properties that are\n"
"untested in tests/xmlparse.py. This could be caused\n"
"by a previous test suite failure, or if you added\n"
"a new property and didn't add corresponding tests!")
self.fail(msg)
if __name__ == "__main__":
unittest.main()

2
virt-install
View File

@ -164,7 +164,7 @@ def get_disk(diskopts, size, sparse, guest, is_file_path):
else:
dev, size = cli.parse_disk(guest, diskopts)
path = dev.path
sparse = dev.sparse
sparse = dev.get_sparse()
d = cli.disk_prompt(guest.conn, path, size, sparse,
origdev=dev)

23
virtManager/addhardware.py
View File

@ -1304,29 +1304,30 @@ class vmmAddHardware(vmmGObjectUI):
if do_use:
diskpath = ideal
disk = virtinst.VirtualDisk(conn,
path=diskpath,
size=disksize,
sparse=sparse,
readOnly=readonly,
device=device,
bus=bus,
format=fmt)
disk = virtinst.VirtualDisk(conn)
disk.path = diskpath
disk.read_only = readonly
disk.device = device
disk.bus = bus
disk.set_create_storage(size=disksize, sparse=sparse,
fmt=fmt or None)
disk.driver_cache = cache
if not fmt:
fmt = self.config.get_storage_format()
if (self.is_default_storage() and
disk.vol_install and
fmt in disk.vol_install.formats):
disk.get_vol_install() and
fmt in disk.get_vol_install().formats):
logging.debug("Setting disk format from prefs: %s", fmt)
disk.vol_install.format = fmt
disk.get_vol_install().format = fmt
if (disk.type == virtinst.VirtualDisk.TYPE_FILE and
not self.vm.is_hvm() and
virtinst.util.is_blktap_capable(self.conn.get_backend())):
disk.driver_name = virtinst.VirtualDisk.DRIVER_TAP
disk.validate()
except Exception, e:
return self.err.val_err(_("Storage parameter error."), e)

16
virtManager/create.py
View File

@ -843,7 +843,7 @@ class vmmCreate(vmmGObjectUI):
disks = self.guest.get_devices("disk")
if disks:
disk = disks[0]
storage = "%s" % self.pretty_storage(disk.size)
storage = "%s" % self.pretty_storage(disk.get_size())
storage += " " + (storagetmpl % disk.path)
elif len(self.guest.get_devices("filesystem")):
fs = self.guest.get_devices("filesystem")[0]
@ -1677,17 +1677,17 @@ class vmmCreate(vmmGObjectUI):
if not diskpath:
return self.err.val_err(_("A storage path must be specified."))
disk = virtinst.VirtualDisk(conn,
path=diskpath,
size=disksize,
sparse=sparse)
disk = virtinst.VirtualDisk(conn)
disk.path = diskpath
disk.set_create_storage(size=disksize, sparse=sparse)
fmt = self.config.get_storage_format()
if (self.is_default_storage() and
disk.vol_install and
fmt in disk.vol_install.formats):
disk.get_vol_install() and
fmt in disk.get_vol_install().formats):
logging.debug("Setting disk format from prefs: %s", fmt)
disk.vol_install.format = fmt
disk.get_vol_install().format = fmt
disk.validate()
except Exception, e:
return self.err.val_err(_("Storage parameter error."), e)

2
virtManager/domain.py
View File

@ -699,8 +699,8 @@ class vmmDomain(vmmLibvirtObject):
editdev.iotune_wis = val
return self._redefine_device(change, devobj)
# Network define methods
# Network define methods
def define_network_source(self, devobj, newtype, newsource, newmode):
def change(editdev):
if not newtype:

2
virtManager/uihelpers.py
View File

@ -829,6 +829,8 @@ def mediadev_added(ignore_helper, newobj, widget, devtype):
if newobj.get_media_type() != devtype:
return
if model is None:
return
if len(model) == 1 and model[0][OPTICAL_IS_VALID] is False:
# Only entry is the 'No device' entry

84
virtinst/CloneManager.py
View File

@ -132,10 +132,17 @@ class Cloner(object):
if not path:
device = VirtualDisk.DEVICE_CDROM
disk = VirtualDisk(self.conn, path, size=.0000001,
device=device)
disk = VirtualDisk(self.conn)
disk.path = path
disk.device = device
# We fake storage creation params for now, but we will
# update it later
disk.set_create_storage(fake=True)
disk.validate()
disklist.append(disk)
except Exception, e:
logging.debug("Error setting clone path.", exc_info=True)
raise ValueError(_("Could not use path '%s' for cloning: %s") %
(path, str(e)))
@ -264,8 +271,7 @@ class Cloner(object):
logging.debug("Original XML:\n%s", self.original_xml)
self._guest = Guest(self.conn,
parsexml=self.original_xml)
self._guest = Guest(self.conn, parsexml=self.original_xml)
self._guest.replace = self.replace
# Pull clonable storage info from the original xml
@ -274,7 +280,7 @@ class Cloner(object):
logging.debug("Original paths: %s",
[d.path for d in self.original_disks])
logging.debug("Original sizes: %s",
[d.size for d in self.original_disks])
[d.get_size() for d in self.original_disks])
# If domain has devices to clone, it must be 'off' or 'paused'
if (not self.clone_running and
@ -293,7 +299,7 @@ class Cloner(object):
if self.preserve_dest_disks:
return
if clone_disk.vol_object:
if clone_disk.get_vol_object():
# XXX We could always do this with vol upload?
# Special case: non remote cloning of a guest using
@ -312,27 +318,34 @@ class Cloner(object):
"currently supported: '%s'") % clone_disk.path)
# Sync 'size' between the two
if orig_disk.size:
clone_disk.size = orig_disk.size
size = orig_disk.get_size()
vol_install = None
clone_path = None
# Setup proper cloning inputs for the new virtual disks
if orig_disk.vol_object and clone_disk.vol_install:
if (orig_disk.get_vol_object() and
clone_disk.get_vol_install()):
clone_vol_install = clone_disk.get_vol_install()
# Source and dest are managed. If they share the same pool,
# replace vol_install with a CloneVolume instance, otherwise
# simply set input_vol on the dest vol_install
if (clone_disk.vol_install.pool.name() ==
orig_disk.vol_object.storagePoolLookupByVolume().name()):
newname = clone_disk.vol_install.name
clone_disk.vol_install = Storage.CloneVolume(self.conn,
if (clone_vol_install.pool.name() ==
orig_disk.get_vol_object().storagePoolLookupByVolume().name()):
newname = clone_vol_install.name
vol_install = Storage.CloneVolume(self.conn,
newname,
orig_disk.vol_object)
orig_disk.get_vol_object())
else:
clone_disk.vol_install.input_vol = orig_disk.vol_object
clone_vol_install.input_vol = orig_disk.get_vol_object()
vol_install = clone_vol_install
else:
clone_disk.clone_path = orig_disk.path
clone_path = orig_disk.path
clone_disk.set_create_storage(
size=size, vol_install=vol_install, clone_path=clone_path)
clone_disk.validate()
def setup_clone(self):
@ -382,8 +395,9 @@ class Cloner(object):
# Change the XML
xmldisk.path = None
xmldisk.type = clone_disk.type
xmldisk.path = clone_disk.path
xmldisk.driver_name = orig_disk.driver_name
xmldisk.driver_type = orig_disk.driver_type
xmldisk.path = clone_disk.path
# Save altered clone xml
self._clone_xml = self._guest.get_xml_config()
@ -405,7 +419,6 @@ class Cloner(object):
Actually perform the duplication: cloning disks if needed and defining
the new clone xml.
"""
logging.debug("Starting duplicate.")
if not meter:
@ -421,19 +434,7 @@ class Cloner(object):
if self.preserve:
for dst_dev in self.clone_disks:
if dst_dev.clone_path == "/dev/null":
# Not really sure why this check is here,
# but keeping for compat
logging.debug("Source dev was /dev/null. Skipping")
continue
elif dst_dev.clone_path == dst_dev.path:
logging.debug("Source and destination are the "
"same. Skipping.")
continue
# VirtualDisk.setup handles everything
dst_dev.setup(meter=meter)
except Exception, e:
logging.debug("Duplicate failed: %s", str(e))
if dom:
@ -513,25 +514,26 @@ class Cloner(object):
validate = not self.preserve_dest_disks
try:
if (disk.path and validate and
not VirtualDisk.path_exists(self.conn, disk.path)):
raise ValueError(_("Disk '%s' does not exist.") %
disk.path)
device = VirtualDisk.DEVICE_DISK
if not disk.path:
# Tell VirtualDisk we are a cdrom to allow empty media
device = VirtualDisk.DEVICE_CDROM
d = VirtualDisk(self.conn, disk.path,
device=device, driverType=disk.driver_type,
validate=validate)
d.target = disk.target
newd = VirtualDisk(self.conn)
newd.path = disk.path
newd.device = device
newd.driver_type = disk.driver_type
newd.target = disk.target
if validate:
newd.set_create_storage(fake=True)
if newd.creating_storage() and disk.path is not None:
raise ValueError("Disk path '%s' does not exist." %
newd.path)
except Exception, e:
logging.debug("", exc_info=True)
raise ValueError(_("Could not determine original disk "
"information: %s" % str(e)))
retdisks.append(d)
retdisks.append(newd)
return retdisks

41
virtinst/DistroInstaller.py
View File

@ -107,13 +107,14 @@ def _upload_file(conn, meter, destpool, src):
if name != basename:
logging.debug("Generated non-colliding volume name %s", name)
disk = VirtualDisk(conn,
path=os.path.join(poolpath, name),
sizebytes=size,
disk = VirtualDisk(conn)
disk.path = os.path.join(poolpath, name)
disk.set_create_storage(size=(float(size) / 1024.0 / 1024.0 / 1024.0),
sparse=True)
disk.validate()
disk.setup(meter=meter)
vol = disk.vol_object
vol = disk.get_vol_object()
if not vol:
raise RuntimeError(_("Failed to lookup scratch media volume"))
@ -217,11 +218,7 @@ class DistroInstaller(Installer.Installer):
# Pass the parameters off to VirtualDisk to validate, and pull
# out the path
try:
d = VirtualDisk(self.conn,
path=val,
device=VirtualDisk.DEVICE_CDROM,
transient=True,
readOnly=True)
d = self._make_cdrom_dev(val)
val = d.path
except:
logging.debug("Error validating install location",
@ -255,11 +252,8 @@ class DistroInstaller(Installer.Installer):
else:
cdrom = self.location
disk = VirtualDisk(guest.conn,
path=cdrom,
device=VirtualDisk.DEVICE_CDROM,
readOnly=True,
transient=transient)
disk = self._make_cdrom_dev(cdrom)
disk.transient = transient
self.install_devices.append(disk)
def _perform_initrd_injections(self, initrd):
@ -340,26 +334,13 @@ class DistroInstaller(Installer.Installer):
def _prepare_kernel_and_initrd(self, guest, meter):
disk = None
# If installing off a local path, map it through to a virtual CD/disk
# If installing off a local path, map it through to a virtual CD
if (self.location is not None and
self._location_is_path and
not os.path.isdir(self.location)):
device = VirtualDisk.DEVICE_CDROM
# pylint: disable=W0212
# Access to protected member lookup_osdict_key
can_cdrom = guest._lookup_osdict_key('pv_cdrom_install')
# pylint: enable=W0212
if self.is_xenpv() and can_cdrom:
device = VirtualDisk.DEVICE_DISK
disk = VirtualDisk(guest.conn,
device=device,
path=self.location,
readOnly=True,
transient=True)
disk = self._make_cdrom_dev(self.location)
disk.transient = True
# Make sure we always fetch kernel here if required
if self._install_bootconfig.kernel and not self.scratchdir_required():

11
virtinst/ImageInstaller.py
View File

@ -120,14 +120,13 @@ class ImageInstaller(Installer.Installer):
if drive.disk.format == ImageParser.Disk.FORMAT_ISO:
device = VirtualDisk.DEVICE_CDROM
disk = VirtualDisk(conn=self.conn,
path=path,
size=size,
device=device,
format=drive.disk.format)
disk = VirtualDisk(self.conn)
disk.path = path
disk.device = device
disk.target = drive.target
disk.set_create_storage(size=size, fmt=drive.disk.format)
disk.validate()
self.install_devices.append(disk)
def _abspath(self, p):

8
virtinst/Installer.py
View File

@ -271,6 +271,14 @@ class Installer(XMLBuilderDomain.XMLBuilderDomain):
return "/sbin/init"
return "/bin/sh"
def _make_cdrom_dev(self, path):
dev = virtinst.VirtualDisk(self.conn)
dev.path = path
dev.device = dev.DEVICE_CDROM
dev.read_only = True
dev.validate()
return dev
def _get_osblob_helper(self, guest, isinstall, bootconfig):
arch = self.arch
machine = self.machine

7
virtinst/LiveCDInstaller.py
View File

@ -20,20 +20,17 @@
# MA 02110-1301 USA.
from virtinst import Installer
from virtinst.VirtualDisk import VirtualDisk
class LiveCDInstaller(Installer.Installer):
_has_install_phase = False
# LiveCD specific methods/overwrites
def _validate_location(self, val):
if not val:
return None
return VirtualDisk(self.conn,
path=val,
device=VirtualDisk.DEVICE_CDROM,
readOnly=True)
return self._make_cdrom_dev(val)
def _get_location(self):
return self._location
def _set_location(self, val):

2
virtinst/Storage.py
View File

@ -1076,7 +1076,7 @@ class StorageVolume(StorageObject):
def get_capacity(self):
return self._capacity
def set_capacity(self, val):
if type(val) not in (int, float, long) or val <= 0:
if type(val) not in (int, float, long) or val < 0:
raise ValueError(_("Capacity must be a positive number"))
newcap = int(val)
origcap = self.capacity

948
virtinst/VirtualDisk.py
View File

File diff suppressed because it is too large Load Diff

18
virtinst/XMLBuilderDomain.py
View File

@ -227,7 +227,7 @@ def _xml_property(fget=None, fset=None, doc=None,
xpath=None, get_converter=None, set_converter=None,
xml_get_xpath=None, xml_set_xpath=None,
xml_set_list=None, is_bool=False, is_multi=False,
default_converter=None):
default_converter=None, clear_first=None):
"""
Set a XMLBuilder class property that represents a value in the
<domain> XML. For example
@ -260,6 +260,9 @@ def _xml_property(fget=None, fset=None, doc=None,
@param is_multi: Whether data is coming multiple or a single node
@param default_converter: If the virtinst value is "default", use
this function to get the actual XML value
@param clear_first: List of xpaths to unset before any 'set' operation.
For those weird interdependent XML props like disk source type and
path attribute.
"""
# pylint: disable=W0212
# Accessing _xml vals of self. This should be a class method, but
@ -353,12 +356,23 @@ def _xml_property(fget=None, fset=None, doc=None,
nodes = util.listify(_get_xpath_node(self._xml_ctx,
node_xpath, is_multi))
clear_nodes = []
for cpath in clear_first or []:
cnode = _get_xpath_node(self._xml_ctx, cpath, False)
if not cnode:
continue
if any([(n and n.nodePath() == cnode.nodePath()) for n in nodes]):
continue
clear_nodes.append(cnode)
xpath_list = node_xpath
if xml_set_list:
xpath_list = xml_set_list(self)
node_map = _tuplify_lists(nodes, val, xpath_list)
node_map = []
if clear_nodes:
node_map += _tuplify_lists(clear_nodes, None, "")
node_map += _tuplify_lists(nodes, val, xpath_list)
for node, val, use_xpath in node_map:
if node:
use_xpath = node.nodePath()

56
virtinst/cli.py
View File

@ -465,8 +465,8 @@ def disk_prompt(conn, origpath, origsize, origsparse,
retry_path = True
no_path_needed = (origdev and
(origdev.vol_install or
origdev.vol_object or
(origdev.get_vol_install() or
origdev.get_vol_object() or
origdev.can_be_empty()))
def prompt_path(chkpath, chksize):
@ -578,13 +578,15 @@ def disk_prompt(conn, origpath, origsize, origsparse,
try:
if origdev:
dev = origdev
if path is not None:
if path is not None and path != dev.path:
dev.path = path
if size is not None:
dev.size = size
if size is not None and size != dev.get_size():
dev.set_create_storage(size=size, sparse=origsparse)
else:
dev = VirtualDisk(conn=conn, path=path, size=size,
sparse=origsparse)
dev = VirtualDisk(conn)
dev.path = path
dev.set_create_storage(size=size, sparse=origsparse)
dev.validate()
except ValueError, e:
if is_prompt():
logging.error(e)
@ -1485,11 +1487,12 @@ def parse_disk(guest, optstr, dev=None):
return val
if not dev:
dev = virtinst.VirtualDisk(guest.conn)
# Parse out comma separated options
opts = parse_optstr(optstr, remove_first="path")
# We annoyingly need these params ahead of time to deal with
# VirtualDisk validation
path = opt_get("path")
pool = opt_get("pool")
vol = opt_get("vol")
@ -1497,36 +1500,22 @@ def parse_disk(guest, optstr, dev=None):
fmt = opt_get("format")
sparse = parse_sparse(opt_get("sparse"))
ro, shared = parse_perms(opt_get("perms"))
device = opt_get("device")
abspath, volinst, volobj = _parse_disk_source(guest, path, pool, vol,
size, fmt, sparse)
if not dev:
# Build a stub device that should always validate cleanly
dev = virtinst.VirtualDisk(conn=guest.conn,
path=abspath,
volObject=volobj,
volInstall=volinst,
size=size,
readOnly=ro,
sparse=sparse,
shareable=shared,
device=device,
format=fmt)
if volobj:
dev.set_vol_object(volobj)
else:
dev.path = abspath
dev.read_only = ro
dev.shareable = shared
dev.set_create_storage(size=size, fmt=fmt, sparse=sparse,
vol_install=volinst)
set_param = _build_set_param(dev, opts)
set_param("path", "path", abspath)
set_param("vol", "vol_object", volobj)
set_param("pool", "vol_install", volinst)
set_param("size", "size", size)
set_param("format", "format", fmt)
set_param("sparse", "sparse", sparse)
set_param("read_only", "perms", ro)
set_param("shareable", "perms", shared)
set_param("device", "device", device)
set_param("device", "device")
set_param("bus", "bus")
set_param("driver_cache", "cache")
set_param("driver_name", "driver_name")
@ -1538,13 +1527,14 @@ def parse_disk(guest, optstr, dev=None):
if opts:
fail(_("Unknown options %s") % opts.keys())
dev.validate()
return dev, size
#####################
# --network parsing #
#####################
def parse_network(guest, optstring, dev=None, mac=None):
# Handle old format of bridge:foo instead of bridge=foo
for prefix in ["network", "bridge"]:

569
virtinst/diskbackend.py Normal file
View File

@ -0,0 +1,569 @@
#
# Storage lookup/creation helpers
#
# Copyright 2013 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
import logging
import os
import statvfs
import libvirt
from virtinst import Storage
from virtinst import util
def _check_if_pool_source(conn, path):
"""
If passed path is a host disk device like /dev/sda, want to let the user
use it
"""
if not conn.check_conn_support(conn.SUPPORT_CONN_STORAGE):
return None
def check_pool(poolname, path):
pool = conn.storagePoolLookupByName(poolname)
xml = pool.XMLDesc(0)
for element in ["dir", "device", "adapter"]:
xml_path = util.xpath(xml, "/pool/source/%s/@path" % element)
if xml_path == path:
return pool
running_list = conn.listStoragePools()
inactive_list = conn.listDefinedStoragePools()
for plist in [running_list, inactive_list]:
for name in plist:
p = check_pool(name, path)
if p:
return p
return None
def check_if_path_managed(conn, path):
"""
Determine if we can use libvirt storage APIs to create or lookup
the passed path. If we can't, throw an error
"""
vol = None
pool = None
verr = None
path_is_pool = False
def lookup_vol_by_path():
try:
vol = conn.storageVolLookupByPath(path)
vol.info()
return vol, None
except libvirt.libvirtError, e:
if (hasattr(libvirt, "VIR_ERR_NO_STORAGE_VOL")
and e.get_error_code() != libvirt.VIR_ERR_NO_STORAGE_VOL):
raise
return None, e
def lookup_vol_name(name):
try:
name = os.path.basename(path)
if pool and name in pool.listVolumes():
return pool.lookupByName(name)
except:
pass
return None
vol = lookup_vol_by_path()[0]
if not vol:
pool = util.lookup_pool_by_path(conn, os.path.dirname(path))
# Is pool running?
if pool and pool.info()[0] != libvirt.VIR_STORAGE_POOL_RUNNING:
pool = None
# Attempt to lookup path as a storage volume
if pool and not vol:
try:
# Pool may need to be refreshed, but if it errors,
# invalidate it
pool.refresh(0)
vol, verr = lookup_vol_by_path()
if verr:
vol = lookup_vol_name(os.path.basename(path))
except Exception, e:
vol = None
pool = None
verr = str(e)
if not vol:
# See if path is a pool source, and allow it through
trypool = _check_if_pool_source(conn, path)
if trypool:
path_is_pool = True
pool = trypool
if not vol and not pool:
if not conn.is_remote():
# Building local disk
return None, None, False
if not verr:
# Since there is no error, no pool was ever found
err = (_("Cannot use storage '%(path)s': '%(rootdir)s' is "
"not managed on the remote host.") %
{'path' : path,
'rootdir' : os.path.dirname(path)})
else:
err = (_("Cannot use storage %(path)s: %(err)s") %
{'path' : path, 'err' : verr})
raise ValueError(err)
return vol, pool, path_is_pool
def _build_vol_install(conn, path, pool, size, sparse):
# Path wasn't a volume. See if base of path is a managed
# pool, and if so, setup a StorageVolume object
if size is None:
raise ValueError(_("Size must be specified for non "
"existent volume path '%s'" % path))
logging.debug("Path '%s' is target for pool '%s'. "
"Creating volume '%s'.",
os.path.dirname(path), pool.name(),
os.path.basename(path))
volclass = Storage.StorageVolume.get_volume_for_pool(pool_object=pool)
cap = (size * 1024 * 1024 * 1024)
if sparse:
alloc = 0
else:
alloc = cap
volinst = volclass(conn, name=os.path.basename(path),
capacity=cap, allocation=alloc, pool=pool)
return volinst
class _StorageBase(object):
def get_size(self):
raise NotImplementedError()
def get_dev_type(self):
raise NotImplementedError()
def is_managed(self):
raise NotImplementedError()
def get_driver_type(self):
raise NotImplementedError()
class StorageCreator(_StorageBase):
def __init__(self, conn, path, pool,
vol_install, clone_path,
size, sparse, fmt):
_StorageBase.__init__(self)
self._conn = conn
self._pool = pool
self._vol_install = vol_install
self._path = path
self._size = size
self._sparse = sparse
self._clone_path = clone_path
self.fake = False
if not self._vol_install and self._pool:
self._vol_install = _build_vol_install(conn, path, pool,
size, sparse)
self._set_format(fmt)
if self._vol_install:
self._path = None
self._size = None
# Cached bits
self._dev_type = None
###############
# Private API #
###############
def _set_format(self, val):
if val is None:
return
if self._vol_install:
if not hasattr(self._vol_install, "format"):
raise ValueError(_("Storage type does not support format "
"parameter."))
if getattr(self._vol_install, "format", None) != val:
setattr(self._vol_install, "format", val)
elif val != "raw":
raise RuntimeError(_("Format cannot be specified for "
"unmanaged storage."))
##############
# Public API #
##############
def _get_path(self):
if self._vol_install and not self._path:
self._path = (util.xpath(self._vol_install.pool.XMLDesc(0),
"/pool/target/path") + "/" +
self._vol_install.name)
return self._path
path = property(_get_path)
def get_vol_install(self):
return self._vol_install
def get_sparse(self):
return self._sparse
def get_size(self):
if not self._size:
self._size = (float(self._vol_install.capacity) /
1024.0 / 1024.0 / 1024.0)
return self._size
def get_dev_type(self):
if not self._dev_type:
if self._vol_install:
if self._vol_install.file_type == libvirt.VIR_STORAGE_VOL_FILE:
self._dev_type = "file"
else:
self._dev_type = "block"
else:
self._dev_type = "file"
return self._dev_type
def get_driver_type(self):
if self._vol_install:
if hasattr(self._vol_install, "format"):
return self._vol_install.format
return "raw"
def is_managed(self):
return bool(self._vol_install)
def validate(self, device, devtype):
if device in ["floppy", "cdrom"]:
raise ValueError(_("Cannot create storage for %s device.") %
device)
if self.is_managed():
return
if devtype == "block":
raise ValueError(_("Local block device path '%s' must "
"exist.") % self.path)
if not os.access(os.path.dirname(self.path), os.R_OK):
raise ValueError("No read access to directory '%s'" %
os.path.dirname(self.path))
if self._size is None:
raise ValueError(_("size is required for non-existent disk "
"'%s'" % self.path))
if not os.access(os.path.dirname(self.path), os.W_OK):
raise ValueError(_("No write access to directory '%s'") %
os.path.dirname(self.path))
def is_size_conflict(self):
if self._vol_install:
return self._vol_install.is_size_conflict()
ret = False
msg = None
vfs = os.statvfs(os.path.dirname(self._path))
avail = vfs[statvfs.F_FRSIZE] * vfs[statvfs.F_BAVAIL]
need = long(self._size * 1024L * 1024L * 1024L)
if need > avail:
if self._sparse:
msg = _("The filesystem will not have enough free space"
" to fully allocate the sparse file when the guest"
" is running.")
else:
ret = True
msg = _("There is not enough free space to create the disk.")
if msg:
msg += (_(" %d M requested > %d M available") %
((need / (1024 * 1024)), (avail / (1024 * 1024))))
return (ret, msg)
#############################
# Storage creation routines #
#############################
def create(self, progresscb):
if self.fake:
raise RuntimeError("Storage creator is fake but creation "
"requested.")
# If a clone_path is specified, but not vol_install.input_vol,
# that means we are cloning unmanaged -> managed, so skip this
if (self._vol_install and
(not self._clone_path or self._vol_install.input_vol)):
return self._vol_install.install(meter=progresscb)
if self._clone_path:
text = (_("Cloning %(srcfile)s") %
{'srcfile' : os.path.basename(self._clone_path)})
else:
text = _("Creating storage file %s") % os.path.basename(self._path)
size_bytes = long(self._size * 1024L * 1024L * 1024L)
progresscb.start(filename=self._path, size=long(size_bytes),
text=text)
if self._clone_path:
# Plain file clone
self._clone_local(progresscb, size_bytes)
else:
# Plain file creation
self._create_local_file(progresscb, size_bytes)
def _create_local_file(self, progresscb, size_bytes):
"""
Helper function which attempts to build self.path
"""
fd = None
path = self._path
sparse = self._sparse
try:
try:
fd = os.open(path, os.O_WRONLY | os.O_CREAT | os.O_DSYNC)
if sparse:
os.ftruncate(fd, size_bytes)
else:
# 1 meg of nulls
mb = 1024 * 1024
buf = '\x00' * mb
left = size_bytes
while left > 0:
if left < mb:
buf = '\x00' * left
left = max(left - mb, 0)
os.write(fd, buf)
progresscb.update(size_bytes - left)
except OSError, e:
raise RuntimeError(_("Error creating diskimage %s: %s") %
(path, str(e)))
finally:
if fd is not None:
os.close(fd)
progresscb.end(size_bytes)
def _clone_local(self, meter, size_bytes):
if self._clone_path == "/dev/null":
# Not really sure why this check is here,
# but keeping for compat
logging.debug("Source dev was /dev/null. Skipping")
return
if self._clone_path == self._path:
logging.debug("Source and destination are the same. Skipping.")
return
# if a destination file exists and sparse flg is True,
# this priority takes a existing file.
if (not os.path.exists(self._path) and self._sparse):
clone_block_size = 4096
sparse = True
fd = None
try:
fd = os.open(self._path, os.O_WRONLY | os.O_CREAT)
os.ftruncate(fd, size_bytes)
finally:
if fd:
os.close(fd)
else:
clone_block_size = 1024 * 1024 * 10
sparse = False
logging.debug("Local Cloning %s to %s, sparse=%s, block_size=%s",
self._clone_path, self._path, sparse, clone_block_size)
zeros = '\0' * 4096
src_fd, dst_fd = None, None
try:
try:
src_fd = os.open(self._clone_path, os.O_RDONLY)
dst_fd = os.open(self._path, os.O_WRONLY | os.O_CREAT)
i = 0
while 1:
l = os.read(src_fd, clone_block_size)
s = len(l)
if s == 0:
meter.end(size_bytes)
break
# check sequence of zeros
if sparse and zeros == l:
os.lseek(dst_fd, s, 1)
else:
b = os.write(dst_fd, l)
if s != b:
meter.end(i)
break
i += s
if i < size_bytes:
meter.update(i)
except OSError, e:
raise RuntimeError(_("Error cloning diskimage %s to %s: %s") %
(self._clone_path, self._path, str(e)))
finally:
if src_fd is not None:
os.close(src_fd)
if dst_fd is not None:
os.close(dst_fd)
class StorageBackend(_StorageBase):
"""
Class that carries all the info about any existing storage that
the disk references
"""
def __init__(self, conn, path, vol_object, pool_object):
_StorageBase.__init__(self)
self._conn = conn
self._vol_object = vol_object
self._pool_object = pool_object
self._path = path
if self._vol_object is not None:
self._pool_object = None
self._path = None
elif self._pool_object is not None:
if self._path is None:
raise ValueError("path must be specified is backend is "
"pool object.")
# Cached bits
self._pool_xml = None
self._vol_xml = None
self._exists = None
self._size = None
self._dev_type = None
################
# Internal API #
################
def _get_pool_xml(self):
if self._pool_xml is None:
self._pool_xml = self._pool_object.XMLDesc(0)
return self._pool_xml
def _get_vol_xml(self):
if self._vol_xml is None:
self._vol_xml = self._vol_object.XMLDesc(0)
return self._vol_xml
##############
# Public API #
##############
def _get_path(self):
if self._vol_object:
return self._vol_object.path()
return self._path
path = property(_get_path)
def get_vol_object(self):
return self._vol_object
def get_size(self):
"""
Return size of existing storage
"""
if self._size is None:
ret = 0
if self._vol_object:
ret = util.xpath(self._get_vol_xml(), "/volume/capacity")
elif self._pool_object:
ret = util.xpath(self._get_pool_xml(), "/pool/capacity")
elif self._path:
ignore, ret = util.stat_disk(self.path)
self._size = (float(ret) / 1024.0 / 1024.0 / 1024.0)
return self._size
def exists(self):
if self._exists is None:
if self.path is None:
self._exists = True
elif self._vol_object or self._pool_object:
self._exists = True
elif not self._conn.is_remote() and os.path.exists(self._path):
self._exists = True
else:
self._exists = False
return self._exists
def get_dev_type(self):
"""
Return disk 'type' value per storage settings
"""
if self._dev_type is None:
if self._vol_object:
t = self._vol_object.info()[0]
if t == libvirt.VIR_STORAGE_VOL_FILE:
self._dev_type = "file"
elif t == libvirt.VIR_STORAGE_VOL_BLOCK:
self._dev_type = "block"
else:
self._dev_type = "file"
elif self._pool_object:
xml = self._get_pool_xml()
for source, source_type in [
("dir", "dir"),
("device", "block"),
("adapter", "block")]:
if util.xpath(xml, "/pool/source/%s/@dev" % source):
self._dev_type = source_type
break
elif self._path:
if os.path.isdir(self._path):
self._dev_type = "dir"
elif util.stat_disk(self._path)[0]:
self._dev_type = "file"
else:
self._dev_type = "block"
if not self._dev_type:
self._dev_type = "block"
return self._dev_type
def get_driver_type(self):
if self._vol_object:
fmt = util.xpath(self._get_vol_xml(),
"/volume/target/format/@type")
return fmt
return None
def is_managed(self):
return bool(self._vol_object or self._pool_object)

3
virtinst/osdict.py
View File

@ -73,7 +73,6 @@ DEFAULTS = {
"continue": False,
"distro": None,
"label": None,
"pv_cdrom_install": False,
"supported": False,
"devices" : {
@ -699,7 +698,6 @@ OS_TYPES = {
"solaris": {
"label": "Solaris",
"clock": "localtime",
"pv_cdrom_install": True,
"variants": {
"solaris9": {
@ -776,7 +774,6 @@ OS_TYPES = {
},
"netware6": {
"label": "Novell Netware 6",
"pv_cdrom_install": True,
},
"generic": {