Btrfs2 (#787)

* All the changes needed to make btrfs subvolumes work. It boils down to two points;
the handling of the addressing of subvolumes re. physical partitions, and the small changes at the bootloader level
* We added a new script only_hd for testing purposes. It only handles hadrd drive management
* restoring an escape hatch during subvolume processing
* hipercommented manage_btrfs_subvolumes
* Ready to be able to select and process options in subvolume mounting
* Separte nodatacow processing
* Solving a flake8 complain
* Use of bind names @ get_filesystem_type
* compress mount option bypass
* Preparations for encryption handling
* Compatibility to master version re. encrypted btrfs volumes
* Now we can create subvolumes and mountpoints inside an encrypted btrfs partition
* changes for entries file generation with systemd-bootctl
* flake8 corrections plus some comments

Co-authored-by: Anton Hvornum <anton@hvornum.se>

1 files changed, 10 insertions, 6 deletions

diff --git a/archinstall/lib/disk/filesystem.py b/archinstall/lib/disk/filesystem.py
index 72be7e70..51ef949b 100644
--- a/archinstall/lib/disk/filesystem.py
+++ b/archinstall/lib/disk/filesystem.py
@@ -37,10 +37,10 @@ class Filesystem:
 		for i in range(storage['DISK_RETRY_ATTEMPTS']):
 			self.partprobe()
 			time.sleep(5)
-			
+
 			# TODO: Convert to blkid (or something similar, but blkid doesn't support traversing to list sub-PARTUUIDs based on blockdevice path?)
 			output = json.loads(SysCommand(f"lsblk --json -o+PARTUUID {self.blockdevice.device}").decode('UTF-8'))
-			
+
 			for device in output['blockdevices']:
 				for index, partition in enumerate(device['children']):
 					if (partuuid := partition.get('partuuid', None)) and partuuid.lower() == uuid:
@@ -93,8 +93,12 @@ class Filesystem:
 							storage['arguments']['!encryption-password'] = get_password(f"Enter a encryption password for {partition['device_instance']}")
 
 						partition['!password'] = storage['arguments']['!encryption-password']
-
-					loopdev = f"{storage.get('ENC_IDENTIFIER', 'ai')}{pathlib.Path(partition['mountpoint']).name}loop"
+					# to be able to generate an unique name in case the partition will not be mounted
+					if partition.get('mountpoint',None):
+						ppath = partition['mountpoint']
+					else:
+						ppath = partition['device_instance'].path
+					loopdev = f"{storage.get('ENC_IDENTIFIER', 'ai')}{pathlib.Path(ppath).name}loop"
 
 					partition['device_instance'].encrypt(password=partition['!password'])
 
@@ -207,9 +211,9 @@ class Filesystem:
 			SysCommand(f'bash -c "umount {device}?"')
 		except:
 			pass
-		
+
 		self.partprobe()
 		worked = self.raw_parted(f'{device} mklabel {disk_label}').exit_code == 0
 		self.partprobe()
-		
+
 		return worked