def run_migration_taskflow(client,
lun_id,
lun_name,
lun_size,
pool_name,
provision,
tier,
rate=const.MIGRATION_RATE_HIGH):
# Step 1: create target LUN
# Step 2: start and migrate migration session
tmp_lun_name = utils.construct_tmp_lun_name(lun_name)
flow_name = 'migrate_lun'
store_spec = {
'client': client,
'pool_name': pool_name,
'lun_name': tmp_lun_name,
'lun_size': lun_size,
'provision': provision,
'tier': tier,
'ignore_thresholds': True,
'src_id': lun_id,
}
work_flow = linear_flow.Flow(flow_name)
work_flow.add(CreateLunTask(),
MigrateLunTask(rebind={'dst_id': 'new_lun_id'}))
engine = taskflow.engines.load(work_flow, store=store_spec)
engine.run()
def run_migration_taskflow(
client, lun_id, lun_name, lun_size, pool_name, provision, tier, rate=const.MIGRATION_RATE_HIGH
):
# Step 1: create target LUN
# Step 2: start and migrate migration session
tmp_lun_name = utils.construct_tmp_lun_name(lun_name)
flow_name = "migrate_lun"
store_spec = {
"client": client,
"pool_name": pool_name,
"lun_name": tmp_lun_name,
"lun_size": lun_size,
"provision": provision,
"tier": tier,
"ignore_thresholds": True,
"src_id": lun_id,
}
work_flow = linear_flow.Flow(flow_name)
work_flow.add(CreateLunTask(), MigrateLunTask(rebind={"dst_id": "new_lun_id"}))
engine = taskflow.engines.load(work_flow, store=store_spec)
engine.run()
def create_cg_from_cg_snapshot(
client,
cg_name,
src_cg_name,
cg_snap_name,
src_cg_snap_name,
pool_name,
lun_sizes,
lun_names,
src_lun_names,
specs_list,
copy_snap=True,
):
prepare_tasks = []
store_spec = {}
if copy_snap:
flow_name = "create_cg_from_cg_snapshot"
temp_cg_snap = utils.construct_tmp_cg_snap_name(cg_name)
snap_name = temp_cg_snap
store_spec.update({"snap_name": src_cg_snap_name, "new_snap_name": snap_name})
prepare_tasks.append(CopySnapshotTask())
prepare_tasks.append(AllowReadWriteTask(rebind={"snap_name": "new_snap_name"}))
else:
flow_name = "create_cg_from_cg"
snap_name = cg_snap_name
store_spec.update({"cg_name": src_cg_name, "cg_snap_name": snap_name})
prepare_tasks.append(CreateCGSnapshotTask())
work_flow = linear_flow.Flow(flow_name)
work_flow.add(*prepare_tasks)
new_src_id_template = "new_src_id_%s"
new_dst_id_template = "new_dst_id_%s"
new_dst_wwn_template = "new_dst_wwn_%s"
common_store_spec = {"client": client, "pool_name": pool_name, "ignore_thresholds": True, "new_cg_name": cg_name}
store_spec.update(common_store_spec)
# Create LUNs for CG
for i, lun_name in enumerate(lun_names):
sub_store_spec = {
"lun_name": utils.construct_tmp_lun_name(lun_name),
"lun_size": lun_sizes[i],
"provision": specs_list[i].provision,
"tier": specs_list[i].tier,
"base_lun_name": src_lun_names[i],
"smp_name": lun_name,
"snap_name": snap_name,
}
work_flow.add(
CreateSMPTask(name="CreateSMPTask_%s" % i, inject=sub_store_spec, provides=new_src_id_template % i),
AttachSnapTask(name="AttachSnapTask_%s" % i, inject=sub_store_spec),
CreateLunTask(
name="CreateLunTask_%s" % i,
inject=sub_store_spec,
provides=(new_dst_id_template % i, new_dst_wwn_template % i),
),
MigrateLunTask(
name="MigrateLunTask_%s" % i,
inject=sub_store_spec,
rebind={"src_id": new_src_id_template % i, "dst_id": new_dst_id_template % i},
wait_for_completion=False,
),
)
# Wait all migration session finished
work_flow.add(
WaitMigrationsTask(new_src_id_template, new_dst_id_template, new_dst_wwn_template, len(lun_names)),
CreateConsistencyGroupTask(new_src_id_template, len(lun_names)),
)
engine = taskflow.engines.load(work_flow, store=store_spec)
engine.run()
# Fetch all created LUNs and add them into CG
lun_id_list = []
for i, lun_name in enumerate(lun_names):
lun_id = engine.storage.fetch(new_src_id_template % i)
lun_id_list.append(lun_id)
client.delete_cg_snapshot(snap_name)
return lun_id_list
def create_cg_from_cg_snapshot(client,
cg_name,
src_cg_name,
cg_snap_name,
src_cg_snap_name,
pool_name,
lun_sizes,
lun_names,
src_lun_names,
specs_list,
copy_snap=True):
prepare_tasks = []
store_spec = {}
if copy_snap:
flow_name = 'create_cg_from_cg_snapshot'
temp_cg_snap = utils.construct_tmp_cg_snap_name(cg_name)
snap_name = temp_cg_snap
store_spec.update({
'snap_name': src_cg_snap_name,
'new_snap_name': snap_name
})
prepare_tasks.append(CopySnapshotTask())
prepare_tasks.append(
AllowReadWriteTask(rebind={'snap_name': 'new_snap_name'}))
else:
flow_name = 'create_cg_from_cg'
snap_name = cg_snap_name
store_spec.update({'cg_name': src_cg_name, 'cg_snap_name': snap_name})
prepare_tasks.append(CreateCGSnapshotTask())
work_flow = linear_flow.Flow(flow_name)
work_flow.add(*prepare_tasks)
new_src_id_template = 'new_src_id_%s'
new_dst_id_template = 'new_dst_id_%s'
new_dst_wwn_template = 'new_dst_wwn_%s'
common_store_spec = {
'client': client,
'pool_name': pool_name,
'ignore_thresholds': True,
'new_cg_name': cg_name
}
store_spec.update(common_store_spec)
# Create LUNs for CG
for i, lun_name in enumerate(lun_names):
sub_store_spec = {
'lun_name': utils.construct_tmp_lun_name(lun_name),
'lun_size': lun_sizes[i],
'provision': specs_list[i].provision,
'tier': specs_list[i].tier,
'base_lun_name': src_lun_names[i],
'smp_name': lun_name,
'snap_name': snap_name,
}
work_flow.add(
CreateSMPTask(name="CreateSMPTask_%s" % i,
inject=sub_store_spec,
provides=new_src_id_template % i),
AttachSnapTask(name="AttachSnapTask_%s" % i,
inject=sub_store_spec),
CreateLunTask(name="CreateLunTask_%s" % i,
inject=sub_store_spec,
provides=(new_dst_id_template % i,
new_dst_wwn_template % i)),
MigrateLunTask(name="MigrateLunTask_%s" % i,
inject=sub_store_spec,
rebind={
'src_id': new_src_id_template % i,
'dst_id': new_dst_id_template % i
},
wait_for_completion=False))
# Wait all migration session finished
work_flow.add(
WaitMigrationsTask(new_src_id_template, new_dst_id_template,
new_dst_wwn_template, len(lun_names)),
CreateConsistencyGroupTask(new_src_id_template, len(lun_names)))
engine = taskflow.engines.load(work_flow, store=store_spec)
engine.run()
# Fetch all created LUNs and add them into CG
lun_id_list = []
for i, lun_name in enumerate(lun_names):
lun_id = engine.storage.fetch(new_src_id_template % i)
lun_id_list.append(lun_id)
client.delete_cg_snapshot(snap_name)
return lun_id_list
