def attach_volume(vm, volume):
"""Attach a volume to a server.
The volume must be in 'AVAILABLE' status in order to be attached. Also,
number of the volumes that are attached to the server must remain less
than 'GANETI_MAX_DISKS_PER_INSTANCE' setting. This function will send
the corresponding job to Ganeti backend and update the status of the
volume to 'ATTACHING'.
"""
# Check volume state
if volume.status not in ["AVAILABLE", "CREATING"]:
raise faults.BadRequest("Cannot attach volume while volume is in"
" '%s' status." % volume.status)
# Check that disk templates are the same
if volume.volume_type_id != vm.flavor.volume_type_id:
msg = ("Volume and server must have the same volume type. Volume has"
" volume type '%s' while server has '%s'" %
(volume.volume_type_id, vm.flavor.volume_type_id))
raise faults.BadRequest(msg)
# Check maximum disk per instance hard limit
vm_volumes_num = vm.volumes.filter(deleted=False).count()
if vm_volumes_num == settings.GANETI_MAX_DISKS_PER_INSTANCE:
raise faults.BadRequest("Maximum volumes per server limit reached")
if volume.status == "CREATING":
action_fields = {"disks": [("add", volume, {})]}
else:
action_fields = {}
comm = commands.server_command("ATTACH_VOLUME",
action_fields=action_fields)
return comm(_attach_volume)(vm, volume)
def attach_volume(vm, volume):
"""Attach a volume to a server.
The volume must be in 'AVAILABLE' status in order to be attached. Also,
number of the volumes that are attached to the server must remain less
than 'GANETI_MAX_DISKS_PER_INSTANCE' setting. This function will send
the corresponding job to Ganeti backend and update the status of the
volume to 'ATTACHING'.
"""
# Check volume state
if volume.status not in ["AVAILABLE", "CREATING"]:
raise faults.BadRequest("Cannot attach volume while volume is in"
" '%s' status." % volume.status)
# Check that disk templates are the same
if volume.volume_type_id != vm.flavor.volume_type_id:
msg = ("Volume and server must have the same volume type. Volume has"
" volume type '%s' while server has '%s'"
% (volume.volume_type_id, vm.flavor.volume_type_id))
raise faults.BadRequest(msg)
# Check maximum disk per instance hard limit
vm_volumes_num = vm.volumes.filter(deleted=False).count()
if vm_volumes_num == settings.GANETI_MAX_DISKS_PER_INSTANCE:
raise faults.BadRequest("Maximum volumes per server limit reached")
if volume.status == "CREATING":
action_fields = {"disks": [("add", volume, {})]}
else:
action_fields = {}
comm = commands.server_command("ATTACH_VOLUME",
action_fields=action_fields)
return comm(_attach_volume)(vm, volume)
def detach_volume(vm, volume):
"""Detach a Volume from a VM
The volume must be in 'IN_USE' status in order to be detached. Also,
the root volume of the instance (index=0) can not be detached. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DETACHING'.
"""
util.assert_detachable_volume_type(volume.volume_type)
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot detach volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot detach the root volume of server %s." %
vm)
comm = commands.server_command("DETACH_VOLUME")
return comm(_detach_volume)(vm, volume)
def delete_volume(vm, volume):
"""Delete attached volume and update its status
The volume must be in 'IN_USE' status in order to be deleted. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DELETING'.
"""
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot delete volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot delete the root volume of server %s." %
vm)
action_fields = {"disks": [("remove", volume, {})]}
comm = commands.server_command("DELETE_VOLUME",
action_fields=action_fields,
for_user=volume.userid)
return comm(_delete_volume)(vm, volume)
def detach_volume(vm, volume):
"""Detach a Volume from a VM
The volume must be in 'IN_USE' status in order to be detached. Also,
the root volume of the instance (index=0) can not be detached. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DETACHING'.
"""
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot detach volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot detach the root volume of a server")
action_fields = {"disks": [("remove", volume, {})]}
comm = commands.server_command("DETACH_VOLUME",
action_fields=action_fields)
return comm(_detach_volume)(vm, volume)
def detach_volume(vm, volume):
"""Detach a Volume from a VM
The volume must be in 'IN_USE' status in order to be detached. Also,
the root volume of the instance (index=0) can not be detached. This
function will send the corresponding job to Ganeti backend and update the
status of the volume to 'DETACHING'.
"""
_check_attachment(vm, volume)
if volume.status not in ["IN_USE", "ERROR"]:
raise faults.BadRequest("Cannot detach volume while volume is in"
" '%s' status." % volume.status)
if volume.index == 0:
raise faults.BadRequest("Cannot detach the root volume of a server")
action_fields = {"disks": [("remove", volume, {})]}
comm = commands.server_command("DETACH_VOLUME",
action_fields=action_fields)
return comm(_detach_volume)(vm, volume)
def resize(vm, flavor):
action_fields = {"beparams": {"vcpus": flavor.cpu, "maxmem": flavor.ram}}
comm = commands.server_command("RESIZE", action_fields=action_fields)
return comm(_resize)(vm, flavor)
def resize(vm, flavor):
action_fields = {"beparams": {"vcpus": flavor.cpu,
"maxmem": flavor.ram}}
comm = commands.server_command("RESIZE", action_fields=action_fields)
return comm(_resize)(vm, flavor)