--- examples/lvm.py | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 examples/lvm.py
diff --git a/examples/lvm.py b/examples/lvm.py new file mode 100644 index 0000000..3d9f451 --- /dev/null +++ b/examples/lvm.py @@ -0,0 +1,64 @@ +import logging +import sys +import os + +from common import set_up_logging +from common import create_sparse_file +from common import tear_down_disk_images +from common import print_devices + +# doing this before importing blivet gets the logging from format class +# registrations and other stuff triggered by the import +set_up_logging() +blivet_log = logging.getLogger("blivet") +blivet_log.info(sys.argv[0]) + +import blivet +from blivet.size import Size + +b = blivet.Blivet() # create an instance of Blivet (don't add system devices) + +# create two disk image files on which to create new devices +disk1_file = create_sparse_file(b, "disk1", Size(spec="100GB")) +b.config.diskImages["disk1"] = disk1_file + +b.reset() + +try: + disk1 = b.devicetree.getDeviceByName("disk1") + + b.initializeDisk(disk1) + + pv = b.newPartition(size=Size(spec="50GB"), fmt_type="lvmpv") + b.createDevice(pv) + + # allocate the partitions (decide where and on which disks they'll reside) + blivet.partitioning.doPartitioning(b) + + vg = b.newVG(parents=[pv]) + b.createDevice(vg) + + # new lv with base size 5GB and unbounded growth and an ext4 filesystem + dev = b.newLV(fmt_type="ext4", size=Size(spec="5GB"), grow=True, + parents=[vg], name="unbounded") + b.createDevice(dev) + + # new lv with base size 5GB and growth up to 15GB and an ext4 filesystem + dev = b.newLV(fmt_type="ext4", size=Size(spec="5GB"), grow=True, + maxsize=Size(spec="15GB"), parents=[vg], name="bounded") + b.createDevice(dev) + + # new lv with a fixed size of 2GB formatted as swap space + dev = b.newLV(fmt_type="swap", size=Size(spec="2GB"), parents=[vg]) + b.createDevice(dev) + + # allocate the growable lvs + blivet.partitioning.growLVM(b) + print_devices(b) + + # write the new partitions to disk and format them as specified + b.doIt() + print_devices(b) +finally: + tear_down_disk_images(b) + os.unlink(disk1_file)