mirror of
https://github.com/virt-manager/virt-manager.git
synced 2024-12-23 17:34:21 +03:00
26a433fc42
When cloning a guest in virt-manager the GUI shows a list of disks and select default cloning policy for every disk. For storage pools where we know that cloning is not possible we should not select that option as default one. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1463066 Reviewed-by: Cole Robinson <crobinso@redhat.com> Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
828 lines
27 KiB
Python
828 lines
27 KiB
Python
#
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# Copyright 2008, 2013, 2015 Red Hat, Inc.
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#
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# This work is licensed under the GNU GPLv2 or later.
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# See the COPYING file in the top-level directory.
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import os
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import logging
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import threading
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import libvirt
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from .xmlbuilder import XMLBuilder, XMLChildProperty, XMLProperty
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from . import util
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_DEFAULT_DEV_TARGET = "/dev"
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_DEFAULT_LVM_TARGET_BASE = "/dev/"
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_DEFAULT_SCSI_TARGET = "/dev/disk/by-path"
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_DEFAULT_MPATH_TARGET = "/dev/mapper"
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class _StoragePermissions(XMLBuilder):
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XML_NAME = "permissions"
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_XML_PROP_ORDER = ["mode", "owner", "group", "label"]
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mode = XMLProperty("./mode")
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owner = XMLProperty("./owner")
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group = XMLProperty("./group")
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label = XMLProperty("./label")
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class _StorageObject(XMLBuilder):
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"""
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Base class for building any libvirt storage object.
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Meaningless to directly instantiate.
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"""
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##############
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# Properties #
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##############
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name = XMLProperty("./name")
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permissions = XMLChildProperty(_StoragePermissions,
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relative_xpath="./target",
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is_single=True)
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def _get_default_pool_path(conn):
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path = "/var/lib/libvirt/images"
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if conn.is_session_uri():
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path = os.path.expanduser("~/.local/share/libvirt/images")
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return path
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class _EnumerateSource(XMLBuilder):
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XML_NAME = "source"
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class _EnumerateSources(XMLBuilder):
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XML_NAME = "sources"
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sources = XMLChildProperty(_EnumerateSource)
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class _Host(XMLBuilder):
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_XML_PROP_ORDER = ["name", "port"]
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XML_NAME = "host"
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name = XMLProperty("./@name")
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port = XMLProperty("./@port", is_int=True)
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class StoragePool(_StorageObject):
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"""
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Base class for building and installing libvirt storage pool xml
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"""
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# @group Types: TYPE_*
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TYPE_DIR = "dir"
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TYPE_FS = "fs"
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TYPE_NETFS = "netfs"
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TYPE_LOGICAL = "logical"
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TYPE_DISK = "disk"
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TYPE_ISCSI = "iscsi"
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TYPE_SCSI = "scsi"
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TYPE_MPATH = "mpath"
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TYPE_GLUSTER = "gluster"
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TYPE_RBD = "rbd"
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TYPE_SHEEPDOG = "sheepdog"
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TYPE_ZFS = "zfs"
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# Pool type descriptions for use in higher level programs
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_descs = {}
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_descs[TYPE_DIR] = _("Filesystem Directory")
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_descs[TYPE_FS] = _("Pre-Formatted Block Device")
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_descs[TYPE_NETFS] = _("Network Exported Directory")
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_descs[TYPE_LOGICAL] = _("LVM Volume Group")
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_descs[TYPE_DISK] = _("Physical Disk Device")
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_descs[TYPE_ISCSI] = _("iSCSI Target")
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_descs[TYPE_SCSI] = _("SCSI Host Adapter")
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_descs[TYPE_MPATH] = _("Multipath Device Enumerator")
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_descs[TYPE_GLUSTER] = _("Gluster Filesystem")
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_descs[TYPE_RBD] = _("RADOS Block Device/Ceph")
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_descs[TYPE_SHEEPDOG] = _("Sheepdog Filesystem")
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_descs[TYPE_ZFS] = _("ZFS Pool")
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@staticmethod
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def get_pool_types():
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"""
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Return list of appropriate pool types
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"""
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return list(StoragePool._descs.keys())
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@staticmethod
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def get_pool_type_desc(pool_type):
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"""
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Return human readable description for passed pool type
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"""
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return StoragePool._descs.get(pool_type, "%s pool" % pool_type)
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@staticmethod
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def pool_list_from_sources(conn, pool_type, host=None):
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"""
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Return a list of StoragePool instances built from libvirt's pool
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source enumeration (if supported).
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:param conn: Libvirt connection
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:param name: Name for the new pool
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:param pool_type: Pool type string from I{Types}
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:param host: Option host string to poll for sources
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"""
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if host:
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source_xml = "<source><host name='%s'/></source>" % host
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else:
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source_xml = "<source/>"
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try:
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xml = conn.findStoragePoolSources(pool_type, source_xml, 0)
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except libvirt.libvirtError as e:
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if util.is_error_nosupport(e):
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return []
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raise
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ret = []
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sources = _EnumerateSources(conn, xml)
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for source in sources.sources:
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source_xml = source.get_xml()
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pool_xml = "<pool>\n%s\n</pool>" % (
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util.xml_indent(source_xml, 2))
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parseobj = StoragePool(conn, parsexml=pool_xml)
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parseobj.type = pool_type
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obj = StoragePool(conn)
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obj.type = pool_type
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obj.source_path = parseobj.source_path
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for h in parseobj.hosts:
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parseobj.remove_child(h)
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obj.add_child(h)
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obj.source_name = parseobj.source_name
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obj.format = parseobj.format
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ret.append(obj)
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return ret
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@staticmethod
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def build_default_pool(conn):
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"""
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Helper to build the 'default' storage pool
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"""
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if not conn.check_support(conn.SUPPORT_CONN_STORAGE):
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return
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pool = None
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name = "default"
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path = _get_default_pool_path(conn)
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if conn.is_session_uri() and not os.path.exists(path):
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os.makedirs(path)
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try:
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pool = conn.storagePoolLookupByName(name)
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except libvirt.libvirtError:
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# Try default pool path when "default" name fails
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pool = StoragePool.lookup_pool_by_path(conn, path)
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if pool:
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# This is a libvirt pool object so create a StoragePool from it
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return StoragePool(conn, parsexml=pool.XMLDesc(0))
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try:
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logging.debug("Attempting to build default pool with target '%s'",
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path)
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defpool = StoragePool(conn)
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defpool.type = defpool.TYPE_DIR
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defpool.name = name
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defpool.target_path = path
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defpool.install(build=True, create=True, autostart=True)
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return defpool
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except Exception as e:
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raise RuntimeError(
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_("Couldn't create default storage pool '%s': %s") %
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(path, str(e)))
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@staticmethod
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def get_default_dir(conn, build=False):
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"""
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Return the default storage dir. If there's a 'default' pool,
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report that. If there's no default pool, return the dir we would
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use for the default.
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"""
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path = _get_default_pool_path(conn)
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if (not conn.is_remote() and
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not conn.check_support(conn.SUPPORT_CONN_STORAGE)):
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if build and not os.path.exists(path):
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os.makedirs(path)
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return path
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try:
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for pool in conn.fetch_all_pools():
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if pool.name == "default":
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return pool.target_path
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except Exception:
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pass
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if build:
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return StoragePool.build_default_pool(conn).target_path
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return _get_default_pool_path(conn)
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@staticmethod
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def lookup_pool_by_path(conn, path):
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"""
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Return the first pool with matching matching target path.
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return the first we find, active or inactive. This iterates over
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all pools and dumps their xml, so it is NOT quick.
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:returns: virStoragePool object if found, None otherwise
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"""
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if not conn.check_support(conn.SUPPORT_CONN_STORAGE):
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return None
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for pool in conn.fetch_all_pools():
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xml_path = pool.target_path
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if xml_path is not None and os.path.abspath(xml_path) == path:
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return conn.storagePoolLookupByName(pool.name)
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return None
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@staticmethod
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def find_free_name(conn, basename, **kwargs):
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"""
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Finds a name similar (or equal) to passed 'basename' that is not
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in use by another pool. Extra params are passed to generate_name
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"""
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def cb(name):
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for pool in conn.fetch_all_pools():
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if pool.name == name:
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return True
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return False
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kwargs["lib_collision"] = False
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return util.generate_name(basename, cb, **kwargs)
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######################
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# Validation helpers #
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######################
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@staticmethod
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def validate_name(conn, name):
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util.validate_name(_("Storage object"), name)
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try:
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conn.storagePoolLookupByName(name)
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except libvirt.libvirtError:
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return
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raise ValueError(_("Name '%s' already in use by another pool." %
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name))
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def default_target_path(self):
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if not self.supports_property("target_path"):
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return None
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if (self.type == self.TYPE_DIR or
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self.type == self.TYPE_NETFS or
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self.type == self.TYPE_FS):
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return os.path.join(self.get_default_dir(self.conn), self.name)
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if self.type == self.TYPE_LOGICAL:
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name = self.name
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if self.source_name:
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name = self.source_name
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return _DEFAULT_LVM_TARGET_BASE + name
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if self.type == self.TYPE_DISK:
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return _DEFAULT_DEV_TARGET
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if self.type == self.TYPE_ISCSI or self.type == self.TYPE_SCSI:
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return _DEFAULT_SCSI_TARGET
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if self.type == self.TYPE_MPATH:
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return _DEFAULT_MPATH_TARGET
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raise RuntimeError("No default target_path for type=%s" % self.type)
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def _type_to_source_prop(self):
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if (self.type == self.TYPE_NETFS or
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self.type == self.TYPE_GLUSTER):
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return "_source_dir"
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elif self.type == self.TYPE_SCSI:
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return "_source_adapter"
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else:
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return "_source_device"
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def _get_source(self):
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return getattr(self, self._type_to_source_prop())
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def _set_source(self, val):
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return setattr(self, self._type_to_source_prop(), val)
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source_path = property(_get_source, _set_source)
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def default_source_name(self):
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srcname = None
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if not self.supports_property("source_name"):
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srcname = None
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elif self.type == StoragePool.TYPE_NETFS:
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srcname = self.name
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elif self.type == StoragePool.TYPE_RBD:
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srcname = "rbd"
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elif self.type == StoragePool.TYPE_GLUSTER:
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srcname = "gv0"
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elif ("target_path" in self._propstore and
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self.target_path and
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self.target_path.startswith(_DEFAULT_LVM_TARGET_BASE)):
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# If there is a target path, parse it for an expected VG
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# location, and pull the name from there
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vg = self.target_path[len(_DEFAULT_LVM_TARGET_BASE):]
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srcname = vg.split("/", 1)[0]
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return srcname
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##############
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# Properties #
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##############
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XML_NAME = "pool"
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_XML_PROP_ORDER = ["name", "type", "uuid",
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"capacity", "allocation", "available",
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"format", "hosts",
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"_source_dir", "_source_adapter", "_source_device",
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"source_name", "target_path",
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"permissions",
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"auth_type", "auth_username", "auth_secret_uuid"]
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_source_dir = XMLProperty("./source/dir/@path")
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_source_adapter = XMLProperty("./source/adapter/@name")
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_source_device = XMLProperty("./source/device/@path")
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type = XMLProperty("./@type")
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uuid = XMLProperty("./uuid")
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capacity = XMLProperty("./capacity", is_int=True)
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allocation = XMLProperty("./allocation", is_int=True)
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available = XMLProperty("./available", is_int=True)
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format = XMLProperty("./source/format/@type")
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iqn = XMLProperty("./source/initiator/iqn/@name")
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source_name = XMLProperty("./source/name")
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auth_type = XMLProperty("./source/auth/@type")
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auth_username = XMLProperty("./source/auth/@username")
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auth_secret_uuid = XMLProperty("./source/auth/secret/@uuid")
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target_path = XMLProperty("./target/path")
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hosts = XMLChildProperty(_Host, relative_xpath="./source")
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######################
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# Public API helpers #
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######################
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def supports_property(self, propname):
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users = {
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"source_path": [self.TYPE_FS, self.TYPE_NETFS, self.TYPE_LOGICAL,
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self.TYPE_DISK, self.TYPE_ISCSI, self.TYPE_SCSI,
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self.TYPE_GLUSTER],
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"source_name": [self.TYPE_LOGICAL, self.TYPE_GLUSTER,
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self.TYPE_RBD, self.TYPE_SHEEPDOG, self.TYPE_ZFS],
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"hosts": [self.TYPE_NETFS, self.TYPE_ISCSI, self.TYPE_GLUSTER,
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self.TYPE_RBD, self.TYPE_SHEEPDOG],
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"format": [self.TYPE_FS, self.TYPE_NETFS, self.TYPE_DISK],
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"iqn": [self.TYPE_ISCSI],
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"target_path": [self.TYPE_DIR, self.TYPE_FS, self.TYPE_NETFS,
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self.TYPE_LOGICAL, self.TYPE_DISK, self.TYPE_ISCSI,
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self.TYPE_SCSI, self.TYPE_MPATH]
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}
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if users.get(propname):
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return self.type in users[propname]
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return hasattr(self, propname)
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def supports_volume_creation(self, clone=False):
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"""
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Returns if pool supports volume creation. If @clone is set to True
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returns if pool supports volume cloning (virVolCreateXMLFrom).
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"""
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supported = [
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StoragePool.TYPE_DIR,
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StoragePool.TYPE_FS,
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StoragePool.TYPE_NETFS,
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StoragePool.TYPE_DISK,
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StoragePool.TYPE_LOGICAL,
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StoragePool.TYPE_RBD,
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]
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if not clone:
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supported.extend([
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StoragePool.TYPE_SHEEPDOG,
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StoragePool.TYPE_ZFS,
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])
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return self.type in supported
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def get_disk_type(self):
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if (self.type == StoragePool.TYPE_DISK or
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self.type == StoragePool.TYPE_LOGICAL or
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self.type == StoragePool.TYPE_SCSI or
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self.type == StoragePool.TYPE_MPATH or
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self.type == StoragePool.TYPE_ZFS):
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return StorageVolume.TYPE_BLOCK
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if (self.type == StoragePool.TYPE_GLUSTER or
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self.type == StoragePool.TYPE_RBD or
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self.type == StoragePool.TYPE_ISCSI or
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self.type == StoragePool.TYPE_SHEEPDOG):
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return StorageVolume.TYPE_NETWORK
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return StorageVolume.TYPE_FILE
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##################
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# Build routines #
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##################
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def validate(self):
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self.validate_name(self.conn, self.name)
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if not self.target_path:
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self.target_path = self.default_target_path()
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if not self.source_name:
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self.source_name = self.default_source_name()
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if not self.format and self.supports_property("format"):
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self.format = "auto"
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if self.supports_property("hosts") and not self.hosts:
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raise RuntimeError(_("Hostname is required"))
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if (self.supports_property("source_path") and
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self.type != self.TYPE_LOGICAL and
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not self.source_path):
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raise RuntimeError(_("Source path is required"))
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if (self.type == self.TYPE_DISK and self.format == "auto"):
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# There is no explicit "auto" type for disk pools, but leaving out
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# the format type seems to do the job for existing formatted disks
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self.format = None
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def install(self, meter=None, create=False, build=False, autostart=False):
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"""
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Install storage pool xml.
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"""
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if (self.type == self.TYPE_LOGICAL and
|
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build and not self.source_path):
|
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raise ValueError(_("Must explicitly specify source path if "
|
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"building pool"))
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if (self.type == self.TYPE_DISK and
|
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build and self.format == "auto"):
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raise ValueError(_("Must explicitly specify disk format if "
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"formatting disk device."))
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xml = self.get_xml()
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logging.debug("Creating storage pool '%s' with xml:\n%s",
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self.name, xml)
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meter = util.ensure_meter(meter)
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try:
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pool = self.conn.storagePoolDefineXML(xml, 0)
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except Exception as e:
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raise RuntimeError(_("Could not define storage pool: %s") % str(e))
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|
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errmsg = None
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if build:
|
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try:
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pool.build(libvirt.VIR_STORAGE_POOL_BUILD_NEW)
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except Exception as e:
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errmsg = _("Could not build storage pool: %s") % str(e)
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if create and not errmsg:
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try:
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pool.create(0)
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except Exception as e:
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errmsg = _("Could not start storage pool: %s") % str(e)
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|
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if autostart and not errmsg:
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try:
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pool.setAutostart(True)
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except Exception as e:
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errmsg = _("Could not set pool autostart flag: %s") % str(e)
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|
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if errmsg:
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# Try and clean up the leftover pool
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try:
|
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pool.undefine()
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except Exception as e:
|
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logging.debug("Error cleaning up pool after failure: %s",
|
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str(e))
|
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raise RuntimeError(errmsg)
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|
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self.conn.cache_new_pool(pool)
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|
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return pool
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|
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class StorageVolume(_StorageObject):
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"""
|
|
Base class for building and installing libvirt storage volume xml
|
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"""
|
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@staticmethod
|
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def get_file_extension_for_format(fmt):
|
|
if not fmt:
|
|
return ""
|
|
if fmt == "raw":
|
|
return ".img"
|
|
return "." + fmt
|
|
|
|
@staticmethod
|
|
def find_free_name(pool_object, basename, **kwargs):
|
|
"""
|
|
Finds a name similar (or equal) to passed 'basename' that is not
|
|
in use by another volume. Extra params are passed to generate_name
|
|
"""
|
|
pool_object.refresh(0)
|
|
return util.generate_name(basename,
|
|
pool_object.storageVolLookupByName,
|
|
**kwargs)
|
|
|
|
TYPE_FILE = getattr(libvirt, "VIR_STORAGE_VOL_FILE", 0)
|
|
TYPE_BLOCK = getattr(libvirt, "VIR_STORAGE_VOL_BLOCK", 1)
|
|
TYPE_DIR = getattr(libvirt, "VIR_STORAGE_VOL_DIR", 2)
|
|
TYPE_NETWORK = getattr(libvirt, "VIR_STORAGE_VOL_NETWORK", 3)
|
|
TYPE_NETDIR = getattr(libvirt, "VIR_STORAGE_VOL_NETDIR", 4)
|
|
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
_StorageObject.__init__(self, *args, **kwargs)
|
|
|
|
self._input_vol = None
|
|
self._pool = None
|
|
self._pool_xml = None
|
|
self._reflink = False
|
|
|
|
self._install_finished = threading.Event()
|
|
|
|
|
|
######################
|
|
# Non XML properties #
|
|
######################
|
|
|
|
def _get_pool(self):
|
|
return self._pool
|
|
def _set_pool(self, newpool):
|
|
if newpool.info()[0] != libvirt.VIR_STORAGE_POOL_RUNNING:
|
|
raise ValueError(_("pool '%s' must be active.") % newpool.name())
|
|
self._pool = newpool
|
|
self._pool_xml = StoragePool(self.conn,
|
|
parsexml=self._pool.XMLDesc(0))
|
|
pool = property(_get_pool, _set_pool)
|
|
|
|
def _get_input_vol(self):
|
|
return self._input_vol
|
|
def _set_input_vol(self, vol):
|
|
if vol is None:
|
|
self._input_vol = None
|
|
return
|
|
|
|
if not isinstance(vol, libvirt.virStorageVol):
|
|
raise ValueError(_("input_vol must be a virStorageVol"))
|
|
|
|
self._input_vol = vol
|
|
input_vol = property(_get_input_vol, _set_input_vol)
|
|
|
|
def _get_reflink(self):
|
|
return self._reflink
|
|
def _set_reflink(self, reflink):
|
|
self._reflink = reflink
|
|
reflink = property(_get_reflink, _set_reflink)
|
|
|
|
def sync_input_vol(self, only_format=False):
|
|
# Pull parameters from input vol into this class
|
|
parsevol = StorageVolume(self.conn,
|
|
parsexml=self._input_vol.XMLDesc(0))
|
|
|
|
self.format = parsevol.format
|
|
self.capacity = parsevol.capacity
|
|
self.allocation = parsevol.allocation
|
|
if only_format:
|
|
return
|
|
self.pool = self._input_vol.storagePoolLookupByVolume()
|
|
|
|
|
|
##########################
|
|
# XML validation helpers #
|
|
##########################
|
|
|
|
@staticmethod
|
|
def validate_name(pool, name):
|
|
util.validate_name(_("Storage object"), name)
|
|
|
|
try:
|
|
pool.storageVolLookupByName(name)
|
|
except libvirt.libvirtError:
|
|
return
|
|
raise ValueError(_("Name '%s' already in use by another volume." %
|
|
name))
|
|
|
|
def _get_vol_type(self):
|
|
if self.type:
|
|
if self.type == "file":
|
|
return self.TYPE_FILE
|
|
elif self.type == "block":
|
|
return self.TYPE_BLOCK
|
|
elif self.type == "dir":
|
|
return self.TYPE_DIR
|
|
elif self.type == "network":
|
|
return self.TYPE_NETWORK
|
|
return self._pool_xml.get_disk_type()
|
|
file_type = property(_get_vol_type)
|
|
|
|
|
|
##################
|
|
# XML properties #
|
|
##################
|
|
|
|
XML_NAME = "volume"
|
|
_XML_PROP_ORDER = ["name", "key", "capacity", "allocation", "format",
|
|
"target_path", "permissions"]
|
|
|
|
type = XMLProperty("./@type")
|
|
key = XMLProperty("./key")
|
|
capacity = XMLProperty("./capacity", is_int=True)
|
|
allocation = XMLProperty("./allocation", is_int=True)
|
|
format = XMLProperty("./target/format/@type")
|
|
target_path = XMLProperty("./target/path")
|
|
backing_store = XMLProperty("./backingStore/path")
|
|
backing_format = XMLProperty("./backingStore/format/@type")
|
|
lazy_refcounts = XMLProperty(
|
|
"./target/features/lazy_refcounts", is_bool=True)
|
|
|
|
|
|
def _detect_backing_store_format(self):
|
|
logging.debug("Attempting to detect format for backing_store=%s",
|
|
self.backing_store)
|
|
from . import diskbackend
|
|
vol, pool = diskbackend.manage_path(self.conn, self.backing_store)
|
|
|
|
if not vol:
|
|
logging.debug("Didn't find any volume for backing_store")
|
|
return None
|
|
|
|
# Only set backing format for volumes that support
|
|
# the 'format' parameter as we know it, like qcow2 etc.
|
|
volxml = StorageVolume(self.conn, vol.XMLDesc(0))
|
|
volxml.pool = pool
|
|
logging.debug("Found backing store volume XML:\n%s",
|
|
volxml.get_xml())
|
|
|
|
if volxml.supports_property("format"):
|
|
logging.debug("Returning format=%s", volxml.format)
|
|
return volxml.format
|
|
|
|
logging.debug("backing_store volume doesn't appear to have "
|
|
"a file format we can specify, returning None")
|
|
return None
|
|
|
|
|
|
######################
|
|
# Public API helpers #
|
|
######################
|
|
|
|
def _supports_format(self):
|
|
if self.file_type == self.TYPE_FILE:
|
|
return True
|
|
if self._pool_xml.type == StoragePool.TYPE_GLUSTER:
|
|
return True
|
|
return False
|
|
|
|
def supports_property(self, propname):
|
|
if propname == "format":
|
|
return self._supports_format()
|
|
return hasattr(self, propname)
|
|
|
|
|
|
##################
|
|
# Build routines #
|
|
##################
|
|
|
|
def validate(self):
|
|
self.validate_name(self.pool, self.name)
|
|
|
|
if not self.format and self.file_type == self.TYPE_FILE:
|
|
self.format = "raw"
|
|
if self._prop_is_unset("lazy_refcounts") and self.format == "qcow2":
|
|
self.lazy_refcounts = self.conn.check_support(
|
|
self.conn.SUPPORT_CONN_QCOW2_LAZY_REFCOUNTS)
|
|
|
|
if self._pool_xml.type == StoragePool.TYPE_LOGICAL:
|
|
if self.allocation != self.capacity:
|
|
logging.warning(_("Sparse logical volumes are not supported, "
|
|
"setting allocation equal to capacity"))
|
|
self.allocation = self.capacity
|
|
|
|
isfatal, errmsg = self.is_size_conflict()
|
|
if isfatal:
|
|
raise ValueError(errmsg)
|
|
if errmsg:
|
|
logging.warning(errmsg)
|
|
|
|
def install(self, meter=None):
|
|
"""
|
|
Build and install storage volume from xml
|
|
"""
|
|
if self.backing_store and not self.backing_format:
|
|
self.backing_format = self._detect_backing_store_format()
|
|
|
|
xml = self.get_xml()
|
|
logging.debug("Creating storage volume '%s' with xml:\n%s",
|
|
self.name, xml)
|
|
|
|
t = threading.Thread(target=self._progress_thread,
|
|
name="Checking storage allocation",
|
|
args=(meter,))
|
|
t.setDaemon(True)
|
|
|
|
meter = util.ensure_meter(meter)
|
|
|
|
cloneflags = 0
|
|
createflags = 0
|
|
if (self.format == "qcow2" and
|
|
not self.backing_store and
|
|
not self.conn.is_really_test() and
|
|
self.conn.check_support(
|
|
self.conn.SUPPORT_POOL_METADATA_PREALLOC, self.pool)):
|
|
createflags |= libvirt.VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA
|
|
|
|
if self.reflink:
|
|
cloneflags |= getattr(libvirt,
|
|
"VIR_STORAGE_VOL_CREATE_REFLINK", 1)
|
|
|
|
try:
|
|
self._install_finished.clear()
|
|
t.start()
|
|
meter.start(size=self.capacity,
|
|
text=_("Allocating '%s'") % self.name)
|
|
|
|
if self.input_vol:
|
|
vol = self.pool.createXMLFrom(xml, self.input_vol, cloneflags)
|
|
else:
|
|
logging.debug("Using vol create flags=%s", createflags)
|
|
vol = self.pool.createXML(xml, createflags)
|
|
|
|
self._install_finished.set()
|
|
t.join()
|
|
meter.end(self.capacity)
|
|
logging.debug("Storage volume '%s' install complete.",
|
|
self.name)
|
|
return vol
|
|
except Exception as e:
|
|
logging.debug("Error creating storage volume", exc_info=True)
|
|
raise RuntimeError("Couldn't create storage volume "
|
|
"'%s': '%s'" % (self.name, str(e)))
|
|
|
|
def _progress_thread(self, meter):
|
|
vol = None
|
|
if not meter:
|
|
return
|
|
|
|
while True:
|
|
try:
|
|
if not vol:
|
|
vol = self.pool.storageVolLookupByName(self.name)
|
|
vol.info()
|
|
break
|
|
except Exception:
|
|
if self._install_finished.wait(.2):
|
|
break
|
|
|
|
if vol is None:
|
|
logging.debug("Couldn't lookup storage volume in prog thread.")
|
|
return
|
|
|
|
while True:
|
|
ignore, ignore, alloc = vol.info()
|
|
meter.update(alloc)
|
|
if self._install_finished.wait(1):
|
|
break
|
|
|
|
|
|
def is_size_conflict(self):
|
|
"""
|
|
Report if requested size exceeds its pool's available amount
|
|
|
|
:returns: 2 element tuple:
|
|
1. True if collision is fatal, false otherwise
|
|
2. String message if some collision was encountered.
|
|
"""
|
|
if not self.pool:
|
|
return (False, "")
|
|
|
|
# pool info is [pool state, capacity, allocation, available]
|
|
avail = self.pool.info()[3]
|
|
if self.allocation > avail:
|
|
return (True, _("There is not enough free space on the storage "
|
|
"pool to create the volume. "
|
|
"(%d M requested allocation > %d M available)") %
|
|
((self.allocation // (1024 * 1024)),
|
|
(avail // (1024 * 1024))))
|
|
elif self.capacity > avail:
|
|
return (False, _("The requested volume capacity will exceed the "
|
|
"available pool space when the volume is fully "
|
|
"allocated. "
|
|
"(%d M requested capacity > %d M available)") %
|
|
((self.capacity // (1024 * 1024)),
|
|
(avail // (1024 * 1024))))
|
|
return (False, "")
|