[Ovirt-devel] [PATCH 2/2] Refactor domain storage setup to use pool and volume selection screens.
Darryl L. Pierce
dpierce at redhat.com
Mon Nov 9 19:20:38 UTC 2009
Now, when the user elects to use managed storage, they're show the list
of available storage pools. Then, after selecting one, the user is shown
the list of volumes on that pool. These are then used to create the
domain.
Signed-off-by: Darryl L. Pierce <dpierce at redhat.com>
---
Makefile.am | 1 +
nodeadmin/adddomain.py | 186 ++++++++++++++++++++++++++------------------
nodeadmin/domainconfig.py | 17 +++-
nodeadmin/libvirtworker.py | 34 ++++----
4 files changed, 142 insertions(+), 96 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index 55ef277..e712d6a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -48,6 +48,7 @@ EXTRA_DIST = \
nodeadmin/netmenu.py \
nodeadmin/nodeadmin.py \
nodeadmin/nodemenu.py \
+ nodeadmin/poolconfig.py \
nodeadmin/removedomain.py \
nodeadmin/removepool.py \
nodeadmin/removevolume.py \
diff --git a/nodeadmin/adddomain.py b/nodeadmin/adddomain.py
index bb06a62..34aa59c 100755
--- a/nodeadmin/adddomain.py
+++ b/nodeadmin/adddomain.py
@@ -37,10 +37,11 @@ OS_VARIANT_PAGE = 12
RAM_CPU_PAGE = 13
ENABLE_STORAGE_PAGE = 14
LOCAL_STORAGE_PAGE = 15
-MANAGED_STORAGE_PAGE = 16
-BRIDGE_PAGE = 17
-VIRT_DETAILS_PAGE = 18
-CONFIRM_PAGE = 19
+SELECT_POOL_PAGE = 16
+SELECT_VOLUME_PAGE = 17
+BRIDGE_PAGE = 18
+VIRT_DETAILS_PAGE = 19
+CONFIRM_PAGE = 20
LOCATION="location"
KICKSTART="kickstart"
@@ -58,24 +59,25 @@ class DomainConfigScreen(ConfigScreen):
self.__config.set_virt_type(self.get_libvirt().get_default_virt_type())
def get_elements_for_page(self, screen, page):
- if page == VM_DETAILS_PAGE: return self.get_vm_details_page(screen)
- elif page == LOCAL_INSTALL_PAGE: return self.get_local_install_page(screen)
- elif page == SELECT_CDROM_PAGE: return self.get_select_cdrom_page(screen)
- elif page == SELECT_ISO_PAGE: return self.get_select_iso_page(screen)
- elif page == NETWORK_INSTALL_PAGE: return self.get_network_install_page(screen)
- elif page == OS_TYPE_PAGE: return self.get_os_type_page(screen)
- elif page == OS_VARIANT_PAGE: return self.get_os_variant_page(screen)
- elif page == RAM_CPU_PAGE: return self.get_ram_and_cpu_page(screen)
- elif page == ENABLE_STORAGE_PAGE: return self.get_enable_storage_page(screen)
- elif page == LOCAL_STORAGE_PAGE: return self.get_local_storage_page(screen)
- elif page == MANAGED_STORAGE_PAGE: return self.get_managed_storage_page(screen)
- elif page == BRIDGE_PAGE: return self.get_bridge_page(screen)
- elif page == VIRT_DETAILS_PAGE: return self.get_virt_details_page(screen)
- elif page == CONFIRM_PAGE: return self.get_confirm_page(screen)
+ if page is VM_DETAILS_PAGE: return self.get_vm_details_page(screen)
+ elif page is LOCAL_INSTALL_PAGE: return self.get_local_install_page(screen)
+ elif page is SELECT_CDROM_PAGE: return self.get_select_cdrom_page(screen)
+ elif page is SELECT_ISO_PAGE: return self.get_select_iso_page(screen)
+ elif page is NETWORK_INSTALL_PAGE: return self.get_network_install_page(screen)
+ elif page is OS_TYPE_PAGE: return self.get_os_type_page(screen)
+ elif page is OS_VARIANT_PAGE: return self.get_os_variant_page(screen)
+ elif page is RAM_CPU_PAGE: return self.get_ram_and_cpu_page(screen)
+ elif page is ENABLE_STORAGE_PAGE: return self.get_enable_storage_page(screen)
+ elif page is LOCAL_STORAGE_PAGE: return self.get_local_storage_page(screen)
+ elif page is SELECT_POOL_PAGE: return self.get_select_pool_page(screen)
+ elif page is SELECT_VOLUME_PAGE: return self.get_select_volume_page(screen)
+ elif page is BRIDGE_PAGE: return self.get_bridge_page(screen)
+ elif page is VIRT_DETAILS_PAGE: return self.get_virt_details_page(screen)
+ elif page is CONFIRM_PAGE: return self.get_confirm_page(screen)
return []
def validate_input(self, page, errors):
- if page == VM_DETAILS_PAGE:
+ if page is VM_DETAILS_PAGE:
if len(self.__guest_name.value()) > 0:
if self.get_libvirt().domain_exists(self.__guest_name.value()):
errors.append("Guest name '%s' is already in use." % self.__guest_name.value())
@@ -83,12 +85,12 @@ class DomainConfigScreen(ConfigScreen):
return True
else:
errors.append("Guest name must be a string between 0 and 50 characters.")
- elif page == LOCAL_INSTALL_PAGE:
+ elif page is LOCAL_INSTALL_PAGE:
if self.__install_source.getSelection() == DomainConfig.INSTALL_SOURCE_CDROM:
return True
elif self.__install_source.getSelection() == DomainConfig.INSTALL_SOURCE_ISO:
return True
- elif page == SELECT_CDROM_PAGE:
+ elif page is SELECT_CDROM_PAGE:
if self.__install_media.getSelection() != None:
if len(self.get_hal().list_installable_volumes()) == 0:
errors.append("No installable media is available.")
@@ -96,7 +98,7 @@ class DomainConfigScreen(ConfigScreen):
return True
else:
errors.append("You must select an install media.")
- elif page == SELECT_ISO_PAGE:
+ elif page is SELECT_ISO_PAGE:
if len(self.__iso_path.value()) > 0:
if os.path.exists(self.__iso_path.value()):
if os.path.isfile(self.__iso_path.value()):
@@ -108,14 +110,14 @@ class DomainConfigScreen(ConfigScreen):
errors.append(self.__iso_path.value())
else:
errors.append("An install media selection is required.")
- elif page == NETWORK_INSTALL_PAGE:
+ elif page is NETWORK_INSTALL_PAGE:
if len(self.__install_url.value()) > 0:
return True
else:
errors.append("An install tree is required.")
- elif page == OS_TYPE_PAGE: return True
- elif page == OS_VARIANT_PAGE: return True
- elif page == RAM_CPU_PAGE:
+ elif page is OS_TYPE_PAGE: return True
+ elif page is OS_VARIANT_PAGE: return True
+ elif page is RAM_CPU_PAGE:
if (len(self.__memory.value()) > 0 and len(self.__cpus.value()) > 0) \
and (int(self.__memory.value()) > 0 and int(self.__cpus.value()) > 0):
return True
@@ -128,8 +130,8 @@ class DomainConfigScreen(ConfigScreen):
errors.append("A value must be entered for CPUs.")
elif int(self.__cpus.value()) <= 0:
errors.append("A positive integer value must be entered for memory.")
- elif page == ENABLE_STORAGE_PAGE: return True
- elif page == LOCAL_STORAGE_PAGE:
+ elif page is ENABLE_STORAGE_PAGE: return True
+ elif page is LOCAL_STORAGE_PAGE:
if len(self.__storage_size.value()) > 0:
if float(self.__storage_size.value()) > 0:
return True
@@ -137,12 +139,17 @@ class DomainConfigScreen(ConfigScreen):
errors.append("A positive value must be entered for the storage size.")
else:
errors.append("A value must be entered for the storage size.")
- elif page == MANAGED_STORAGE_PAGE:
- if self.__existing_storage.getSelection() is not None:
+ elif page is SELECT_POOL_PAGE:
+ if self.__storage_pool.getSelection() is not None:
+ return True
+ else:
+ errors.append("Please select a storage pool.")
+ elif page is SELECT_VOLUME_PAGE:
+ if self.__storage_volume.getSelection() is not None:
return True
else:
errors.append("Please select a storage volume.")
- elif page == BRIDGE_PAGE:
+ elif page is BRIDGE_PAGE:
if self.__network_bridges.getSelection() != None:
if len(self.__mac_address.value()) > 0:
# TODO: regex check the format
@@ -151,62 +158,66 @@ class DomainConfigScreen(ConfigScreen):
errors.append("MAC address must be supplied.")
else:
errors.append("A network bridge must be selected.")
- elif page == VIRT_DETAILS_PAGE:
+ elif page is VIRT_DETAILS_PAGE:
if self.__virt_types.getSelection() != None and self.__architectures.getSelection() != None:
return True
if self.__virt_types.getSelection() is None:
errors.append("Please select a virtualization type.")
if self.__architectures.getSelection() is None:
errors.append("Please selection an architecture.")
- elif page == CONFIRM_PAGE: return True
+ elif page is CONFIRM_PAGE: return True
return False
def process_input(self, page):
- if page == VM_DETAILS_PAGE:
+ if page is VM_DETAILS_PAGE:
self.__config.set_guest_name(self.__guest_name.value())
self.__config.set_install_type(self.__install_type.getSelection())
- elif page == LOCAL_INSTALL_PAGE:
+ elif page is LOCAL_INSTALL_PAGE:
self.__config.set_use_cdrom_source(self.__install_source.getSelection() == DomainConfig.INSTALL_SOURCE_CDROM)
- elif page == SELECT_CDROM_PAGE:
+ elif page is SELECT_CDROM_PAGE:
self.__config.set_install_media(self.__install_media.getSelection())
- elif page == SELECT_ISO_PAGE:
+ elif page is SELECT_ISO_PAGE:
self.__config.set_iso_path(self.__iso_path.value())
- elif page == NETWORK_INSTALL_PAGE:
+ elif page is NETWORK_INSTALL_PAGE:
self.__config.set_install_url(self.__install_url.value())
self.__config.set_kickstart_url(self.__kickstart_url.value())
self.__config.set_kernel_options(self.__kernel_options.value())
- elif page == OS_TYPE_PAGE:
+ elif page is OS_TYPE_PAGE:
self.__config.set_os_type(self.__os_types.getSelection())
- elif page == OS_VARIANT_PAGE:
+ elif page is OS_VARIANT_PAGE:
self.__config.set_os_variant(self.__os_variants.getSelection())
- elif page == RAM_CPU_PAGE:
+ elif page is RAM_CPU_PAGE:
self.__config.set_memory(int(self.__memory.value()))
self.__config.set_cpus(int(self.__cpus.value()))
- elif page == ENABLE_STORAGE_PAGE:
+ elif page is ENABLE_STORAGE_PAGE:
self.__config.set_enable_storage(self.__enable_storage.value())
if self.__storage_type.getSelection() == DomainConfig.NEW_STORAGE:
self.__config.set_use_local_storage(True)
elif self.__storage_type.getSelection() == DomainConfig.EXISTING_STORAGE:
self.__config.set_use_local_storage(False)
- elif page == LOCAL_STORAGE_PAGE:
+ elif page is LOCAL_STORAGE_PAGE:
self.__config.set_storage_size(float(self.__storage_size.value()))
self.__config.set_allocate_storage(self.__allocate_storage.value())
- elif page == MANAGED_STORAGE_PAGE:
+ elif page is SELECT_POOL_PAGE:
self.__config.set_use_local_storage(False)
- self.__config.set_existing_storage(self.__existing_storage.getSelection())
- self.__config.set_storage_size(self.get_libvirt().get_storage_size(self.__existing_storage.getSelection()))
- elif page == BRIDGE_PAGE:
+ self.__config.set_storage_pool(self.__storage_pool.getSelection())
+ elif page is SELECT_VOLUME_PAGE:
+ self.__config.set_storage_volume(self.__storage_volume.getSelection())
+ volume = self.get_libvirt().get_storage_volume(self.__config.get_storage_pool(),
+ self.__config.get_storage_volume())
+ self.__config.set_storage_size(volume.info()[1] / 1024.0 ** 3)
+ elif page is BRIDGE_PAGE:
self.__config.set_network_bridge(self.__network_bridges.getSelection())
- elif page == VIRT_DETAILS_PAGE:
+ elif page is VIRT_DETAILS_PAGE:
self.__config.set_virt_type(self.__virt_types.getSelection())
self.__config.set_architecture(self.__architectures.getSelection())
- elif page == CONFIRM_PAGE:
+ elif page is CONFIRM_PAGE:
self.get_libvirt().define_domain(self.__config, CreateMeter())
self.set_finished()
def get_back_page(self, page):
result = page
- if page == OS_TYPE_PAGE:
+ if page is OS_TYPE_PAGE:
install_type = self.__config.get_install_type()
if install_type == DomainConfig.LOCAL_INSTALL:
if self.__config.get_use_cdrom_source():
@@ -217,24 +228,26 @@ class DomainConfigScreen(ConfigScreen):
result = NETWORK_INSTALL_PAGE
elif install_type == DomainConfig.PXE_INSTALL:
result = VM_DETAILS_PAGE
- elif page == LOCAL_STORAGE_PAGE or page == MANAGED_STORAGE_PAGE:
+ elif page is LOCAL_STORAGE_PAGE or page is SELECT_VOLUME_PAGE:
result = ENABLE_STORAGE_PAGE
- elif page == NETWORK_INSTALL_PAGE:
+ elif page is SELECT_POOL_PAGE:
+ result = ENABLE_STORAGE_PAGE
+ elif page is NETWORK_INSTALL_PAGE:
result = VM_DETAILS_PAGE
- elif page == SELECT_CDROM_PAGE or page == SELECT_ISO_PAGE:
+ elif page is SELECT_CDROM_PAGE or page is SELECT_ISO_PAGE:
result = LOCAL_INSTALL_PAGE
- elif page == BRIDGE_PAGE:
+ elif page is BRIDGE_PAGE:
if self.__config.get_use_local_storage():
result = LOCAL_STORAGE_PAGE
else:
- result = MANAGED_STORAGE_PAGE
+ result = SELECT_VOLUME_PAGE
else:
if page > 1: result = page - 1
return result
def get_next_page(self, page):
result = page
- if page == VM_DETAILS_PAGE:
+ if page is VM_DETAILS_PAGE:
install_type = self.__config.get_install_type()
if install_type == DomainConfig.LOCAL_INSTALL:
result = LOCAL_INSTALL_PAGE
@@ -242,34 +255,36 @@ class DomainConfigScreen(ConfigScreen):
result = NETWORK_INSTALL_PAGE
elif install_type == DomainConfig.PXE_INSTALL:
result = OS_TYPE_PAGE
- elif page == LOCAL_INSTALL_PAGE:
+ elif page is LOCAL_INSTALL_PAGE:
if self.__config.get_use_cdrom_source():
result = SELECT_CDROM_PAGE
else:
result = SELECT_ISO_PAGE
- elif page == SELECT_CDROM_PAGE or page == SELECT_ISO_PAGE:
+ elif page is SELECT_CDROM_PAGE or page is SELECT_ISO_PAGE:
result = OS_TYPE_PAGE
- elif page == NETWORK_INSTALL_PAGE:
+ elif page is NETWORK_INSTALL_PAGE:
result = OS_TYPE_PAGE
- elif page == ENABLE_STORAGE_PAGE:
+ elif page is ENABLE_STORAGE_PAGE:
result = BRIDGE_PAGE
if self.__config.get_enable_storage():
if self.__config.get_use_local_storage():
result = LOCAL_STORAGE_PAGE
else:
- result = MANAGED_STORAGE_PAGE
- elif page == LOCAL_STORAGE_PAGE or page == MANAGED_STORAGE_PAGE:
+ result = SELECT_POOL_PAGE
+ elif page is LOCAL_STORAGE_PAGE:
result = BRIDGE_PAGE
else:
result = page + 1
return result
def page_has_finish(self, page):
- if page == CONFIRM_PAGE: return True
+ if page is CONFIRM_PAGE: return True
return False
def page_has_next(self, page):
- if page < CONFIRM_PAGE:
+ if page is SELECT_POOL_PAGE: return self.__has_pools
+ elif page is SELECT_VOLUME_PAGE: return self.__has_volumes
+ elif page < CONFIRM_PAGE:
return True
def get_vm_details_page(self, screen):
@@ -393,17 +408,36 @@ class DomainConfigScreen(ConfigScreen):
return [Label("Configure local storage"),
grid]
- def get_managed_storage_page(self, screen):
+ def get_select_pool_page(self, screen):
+ pools = []
+ for pool in self.get_libvirt().list_storage_pools():
+ pools.append([pool, pool, pool == self.__config.get_storage_pool()])
+ if len(pools) > 0:
+ self.__storage_pool = RadioBar(screen, (pools))
+ grid = Grid(2, 1)
+ grid.setField(Label("Storage pool:"), 0, 0, anchorTop = 1)
+ grid.setField(self.__storage_pool, 1, 0)
+ self.__has_pools = True
+ else:
+ grid = Label("There are no storage pools available.")
+ self.__has_pools = False
+ return [Label("Configure Managed Storage: Select A Pool"),
+ grid]
+
+ def get_select_volume_page(self, screen):
volumes = []
- for volume in self.get_libvirt().list_storage_volumes():
- volumes.append(["%s (%d GB)" % (volume.name(), volume.info()[1] / (1024 ** 3)),
- volume.name(),
- self.__config.is_existing_storage(volume.name())])
- self.__existing_storage = RadioBar(screen, (volumes))
- grid = Grid(2, 1)
- grid.setField(Label("Existing storage:"), 0, 0)
- grid.setField(self.__existing_storage, 1, 0)
- return [Label("Configure managed storage"),
+ for volume in self.get_libvirt().list_storage_volumes(self.__config.get_storage_pool()):
+ volumes.append([volume, volume, volume == self.__config.get_storage_volume()])
+ if len(volumes) > 0:
+ self.__storage_volume = RadioBar(screen, (volumes))
+ grid = Grid(2, 1)
+ grid.setField(Label("Storage volumes:"), 0, 0, anchorTop = 1)
+ grid.setField(self.__storage_volume, 1, 0)
+ self.__has_volumes = True
+ else:
+ grid = Label("This storage pool has no defined volumes.")
+ self.__has_volumes = False
+ return [Label("Configure Managed Storage: Select A Volume"),
grid]
def get_bridge_page(self, screen):
@@ -448,7 +482,9 @@ class DomainConfigScreen(ConfigScreen):
grid.setField(Label("CPUs:"), 0, 3, anchorRight = 1)
grid.setField(Label("%d" % self.__config.get_cpus()), 1, 3, anchorLeft = 1)
grid.setField(Label("Storage:"), 0, 4, anchorRight = 1)
- grid.setField(Label(self.__config.get_existing_storage()), 1, 4, anchorLeft = 1)
+ grid.setField(Label("%s (on %s)" % (self.__config.get_storage_volume(),
+ self.__config.get_storage_pool())),
+ 1, 4, anchorLeft = 1)
grid.setField(Label("Network:"), 0, 5, anchorRight = 1)
grid.setField(Label(self.__config.get_network_bridge()), 1, 5, anchorLeft = 1)
return [Label("Ready to begin installation of %s" % self.__config.get_guest_name()),
diff --git a/nodeadmin/domainconfig.py b/nodeadmin/domainconfig.py
index ef39fe0..4466e67 100644
--- a/nodeadmin/domainconfig.py
+++ b/nodeadmin/domainconfig.py
@@ -50,7 +50,8 @@ class DomainConfig:
self.__use_local_storage = True
self.__storage_size = 8.0
self.__allocate_storage = True
- self.__existing_storage = ""
+ self.__storage_pool = ""
+ self.__storage_volume = ""
self.__network_bridge = None
self.__mac_address = None
self.__virt_type = None
@@ -177,11 +178,17 @@ class DomainConfig:
def get_allocate_storage(self):
return self.__allocate_storage
- def set_existing_storage(self, storage):
- self.__existing_storage = storage
+ def set_storage_pool(self, pool):
+ self.__storage_pool = pool
- def get_existing_storage(self):
- return self.__existing_storage
+ def get_storage_pool(self):
+ return self.__storage_pool
+
+ def set_storage_volume(self, volume):
+ self.__storage_volume = volume
+
+ def get_storage_volume(self):
+ return self.__storage_volume
def is_existing_storage(self, storage):
return self.__existing_storage == storage
diff --git a/nodeadmin/libvirtworker.py b/nodeadmin/libvirtworker.py
index b2acabe..f31266c 100644
--- a/nodeadmin/libvirtworker.py
+++ b/nodeadmin/libvirtworker.py
@@ -196,6 +196,11 @@ class LibvirtWorker:
'''Returns the storage pool with the specified name.'''
return self.__conn.storagePoolLookupByName(name)
+ def list_storage_volumes(self, poolname):
+ '''Returns the list of all defined storage volumes for a given pool.'''
+ pool = self.get_storage_pool(poolname)
+ return pool.listVolumes()
+
def define_storage_volume(self, config, meter):
'''Defines a new storage volume.'''
self.create_storage_pool(config.get_pool().name())
@@ -204,10 +209,15 @@ class LibvirtWorker:
def remove_storage_volume(self, poolname, volumename):
'''Removes the specified storage volume.'''
- pool = self.get_storage_pool(poolname)
- volume = pool.storageVolLookupByName(volumename)
+ volume = self.get_storage_volume(poolname, volumename)
volume.delete(0)
+ def get_storage_volume(self, poolname, volumename):
+ '''Returns a reference to the specified storage volume.'''
+ pool =self.get_storage_pool(poolname)
+ volume = pool.storageVolLookupByName(volumename)
+ return volume
+
def list_bridges(self):
'''Lists all defined and active bridges.'''
bridges = self.__conn.listNetworks()
@@ -221,21 +231,9 @@ class LibvirtWorker:
def generate_mac_address(self):
return self.__net.macaddr
- def list_storage_volumes(self):
- '''Lists all defined storage volumes.'''
- pools = self.__conn.listStoragePools()
- pools.extend(self.__conn.listDefinedStoragePools())
- result = []
- for name in pools:
- pool = self.__conn.storagePoolLookupByName(name)
- for volname in pool.listVolumes():
- volume = self.__conn.storageVolLookupByPath("/var/lib/libvirt/images/%s" % volname)
- result.append(volume)
- return result
-
- def get_storage_size(self, name):
+ def get_storage_size(self, poolname, volumename):
'''Returns the size of the specified storage volume.'''
- volume = self.__conn.storageVolLookupByPath("/var/lib/libvirt/images/%s" % name)
+ volume = self.get_storage_volume(poolname, volumename)
return volume.info()[1] / (1024.0 ** 3)
def get_virt_types(self):
@@ -381,6 +379,10 @@ class LibvirtWorker:
pool_object = pool,
suffix = ".img")
path = os.path.join(DEFAULT_POOL_TARGET_PATH, path)
+ else:
+ volume = self.get_storage_volume(config.get_storage_pool(),
+ config.get_storage_volume())
+ path = volume.path()
if path is not None:
storage= virtinst.VirtualDisk(conn = self.__conn,
--
1.6.2.5
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