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filesystem: fix implem of available_for_partitions 

The available_for_partitions function wrongly assumed that the
underlying disk had a GPT partition table. Updated the implementation to
use the alignment data as expected.

Signed-off-by: Olivier Gayot <olivier.gayot@canonical.com>
This commit is contained in:
Olivier Gayot 2022-10-05 18:59:14 +02:00
parent dd2553723f
commit 06f5e24904
1 changed files with 7 additions and 1 deletions
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8
subiquity/models/filesystem.py
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@ -552,7 +552,7 @@ class _Device(_Formattable, ABC):
@property
def available_for_partitions(self):
return align_down(self.size, 1 << 20) - GPT_OVERHEAD
raise NotImplementedError
def available(self):
# A _Device is available if:
@ -605,6 +605,12 @@ class Disk(_Device):
_info = attr.ib(default=None)
@property
def available_for_partitions(self):
margin_before = self.alignment_data().min_start_offset
margin_after = self.alignment_data().min_end_offset
return align_down(self.size, 1 << 20) - margin_before - margin_after
def alignment_data(self):
ptable = self.ptable_for_new_partition()
return self._m._partition_alignment_data[ptable]