Rework btrfs handling (#1234)

* Restructuring btrfs.py into lib/btrfs/*.py

* Reworking how BTRFS subvolumes get represented, and worked with. Subvolumes are now their own entity which can be used to access it's information, parents or mount location.

* Added BtrfsSubvolume.partition and other stuff.

* Reworking the way luks2().unlock and .format() returns device instances. They should now return BTRFSSubvolume where appropriate.

* Fixed a missing import

* Fixed an issue where mkfs.btrfs wouldn't trigger due to busy disk.

* Fixing subvol mounting without creating a fake instance.

* Added creation of mountpint for btrfs subvolume

* Fixed root detection

* Re-worked mounting into a queue system using frozen mounting calls using lambda

* Removed old mount_subvolume() function

* Removed get_subvolumes_from_findmnt()

* Fixed Partition().subvolumes iteration

* Adding .root to BtrfsSubvolume

* Fixed issue in SysCommandWorker where log output would break and crash execution due to cmd being a string vs list

* Changed return-value from MapperDev.mountpoint to pathlib.Path

1 files changed, 13 insertions, 0 deletions

diff --git a/archinstall/lib/disk/filesystem.py b/archinstall/lib/disk/filesystem.py
index 31929b63..8d8f596e 100644
--- a/archinstall/lib/disk/filesystem.py
+++ b/archinstall/lib/disk/filesystem.py
@@ -65,6 +65,7 @@ class Filesystem:
 
 	def load_layout(self, layout :Dict[str, Any]) -> None:
 		from ..luks import luks2
+		from .btrfs import BTRFSPartition
 
 		# If the layout tells us to wipe the drive, we do so
 		if layout.get('wipe', False):
@@ -142,12 +143,24 @@ class Filesystem:
 										break
 
 						unlocked_device.format(partition['filesystem']['format'], options=format_options)
+
 				elif partition.get('wipe', False):
 					if not partition['device_instance']:
 						raise DiskError(f"Internal error caused us to loose the partition. Please report this issue upstream!")
 
 					partition['device_instance'].format(partition['filesystem']['format'], options=format_options)
 
+					if partition['filesystem']['format'] == 'btrfs':
+						# We upgrade the device instance to a BTRFSPartition if we format it as such.
+						# This is so that we can gain access to more features than otherwise available in Partition()
+						partition['device_instance'] = BTRFSPartition(
+							partition['device_instance'].path,
+							block_device=partition['device_instance'].block_device,
+							encrypted=False,
+							filesystem='btrfs',
+							autodetect_filesystem=False
+						)
+
 			if partition.get('boot', False):
 				log(f"Marking partition {partition['device_instance']} as bootable.")
 				self.set(self.partuuid_to_index(partition['device_instance'].part_uuid), 'boot on')