def snapshot_delete(self, instance_name, snapshot_name, metadata=False):
"""delete the snapshot
Todo: use virDomainXXX instead of virsh
:param instance: instance of snapshot
:param snapshot_name: Name of snapshot
:param metadata: If True, delete the metadata only
"""
virsh_cmd = ['virsh', 'snapshot-delete', instance_name, snapshot_name]
if metadata:
virsh_cmd = virsh_cmd + ['--metadata']
utils.execute(*virsh_cmd, run_as_root=True)
def snapshot_delete(self, instance_name, snapshot_name, metadata = False):
"""delete the snapshot
Todo: use virDomainXXX instead of virsh
:param instance: instance of snapshot
:param snapshot_name: Name of snapshot
:param metadata: If True, delete the metadata only
"""
virsh_cmd = ['virsh', 'snapshot-delete', instance_name, snapshot_name]
if metadata :
virsh_cmd = virsh_cmd + ['--metadata']
utils.execute(*virsh_cmd, run_as_root=True)
def rebase(self, backing_file_base, backing_file_top):
"""rebase the backing_file_top to backing_file_base using unsafe mode
:param backing_file_base: backing file to rebase to
:param backing_file_top: top file to rebase
"""
utils.execute('qemu-img',
'rebase',
'-u',
'-b',
backing_file_base,
backing_file_top,
run_as_root=True)
def blockcommit(self, instance, dev, backing_file_base, backing_file_top):
"""block commit the changes from top to base
Todo: use virDomainXXX instead of virsh
:param instance: instance to blockcommit
:param dev: block device name
:param backing_file_base: base to commit into
:param backing_file_top: top file to commit from
"""
virsh_cmd = ['virsh', 'blockcommit', '--domain',
instance, dev, '--wait', '--base', backing_file_base,
'--top', backing_file_top]
utils.execute(*virsh_cmd, run_as_root=True)
def blockcommit(self, instance, dev, backing_file_base, backing_file_top):
"""block commit the changes from top to base
Todo: use virDomainXXX instead of virsh
:param instance: instance to blockcommit
:param dev: block device name
:param backing_file_base: base to commit into
:param backing_file_top: top file to commit from
"""
virsh_cmd = [
'virsh', 'blockcommit', '--domain', instance, dev, '--wait',
'--base', backing_file_base, '--top', backing_file_top
]
utils.execute(*virsh_cmd, run_as_root=True)
def qemu_img_info(path):
"""Return an object containing the parsed output from qemu-img info."""
if not os.path.exists(path):
return QemuImgInfo()
out, err = utils.execute('env', 'LC_ALL=C', 'LANG=C',
'qemu-img', 'info', path)
return QemuImgInfo(out)
def qemu_img_info(path):
"""Return an object containing the parsed output from qemu-img info."""
if not os.path.exists(path):
return QemuImgInfo()
out, err = utils.execute('env', 'LC_ALL=C', 'LANG=C', 'qemu-img', 'info',
path)
return QemuImgInfo(out)
def snapshot_create_as(self, instance_name, snapshot_name, snapshot_description, dev_snapshot_disk_paths):
"""Atomic disk only external snapshots of an instance
Todo: use virDomainSnapshotCreateXML instead of virsh
:param instance: instance to snapshot
:param snapshot_name: Name of snapshot
:param snapshot_description: Description of snapshot
:param snapshot_disk_paths: list of the new snapshot_disk_paths
"""
diskspecs = []
for dev, snapshot in dev_snapshot_disk_paths.iteritems():
diskspecs = diskspecs + ['--diskspec', dev + ',snapshot=external,file=' + snapshot]
virsh_cmd = ['virsh', 'snapshot-create-as',
instance_name, snapshot_name,
snapshot_description,
'--disk-only', '--atomic'] + diskspecs
utils.execute(*virsh_cmd, run_as_root=True)
def snapshot_create_as(self, instance_name, snapshot_name,
snapshot_description, dev_snapshot_disk_paths):
"""Atomic disk only external snapshots of an instance
Todo: use virDomainSnapshotCreateXML instead of virsh
:param instance: instance to snapshot
:param snapshot_name: Name of snapshot
:param snapshot_description: Description of snapshot
:param snapshot_disk_paths: list of the new snapshot_disk_paths
"""
diskspecs = []
for dev, snapshot in dev_snapshot_disk_paths.iteritems():
diskspecs = diskspecs + [
'--diskspec', dev + ',snapshot=external,file=' + snapshot
]
virsh_cmd = [
'virsh', 'snapshot-create-as', instance_name, snapshot_name,
snapshot_description, '--disk-only', '--atomic'
] + diskspecs
utils.execute(*virsh_cmd, run_as_root=True)
def commit(self, backing_file_top):
"""rebase the backing_file_top to backing_file_base
:param backing_file_top: top file to commit from to its base
"""
utils.execute('qemu-img', 'commit', backing_file_top, run_as_root=True)
def rebase(self, backing_file_base, backing_file_top):
"""rebase the backing_file_top to backing_file_base using unsafe mode
:param backing_file_base: backing file to rebase to
:param backing_file_top: top file to rebase
"""
utils.execute('qemu-img', 'rebase', '-u', '-b', backing_file_base, backing_file_top, run_as_root=True)
def commit(self, backing_file_top):
"""rebase the backing_file_top to backing_file_base
:param backing_file_top: top file to commit from to its base
"""
utils.execute('qemu-img', 'commit', backing_file_top, run_as_root=True)
def convert_image(source, dest, out_format, run_as_root=False):
"""Convert image to other format."""
cmd = ('qemu-img', 'convert', '-O', out_format, source, dest)
utils.execute(*cmd, run_as_root=run_as_root)
def convert_image(source, dest, out_format, run_as_root=False):
"""Convert image to other format."""
cmd = ('qemu-img', 'convert', '-O', out_format, source, dest)
utils.execute(*cmd, run_as_root=run_as_root)