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Fix problem with 1 MiB too large volume when combining gpt and grub

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This commit is contained in:
Anders Ingemann 2015-04-08 23:28:41 +02:00
parent 736852a959
commit 50297d790c
1 changed files with 10 additions and 8 deletions
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18
bootstrapvz/base/fs/partitionmaps/gpt.py
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@ -27,7 +27,7 @@ class GPTPartitionMap(AbstractPartitionMap):
# If we are using the grub bootloader we need to create an unformatted partition
# at the beginning of the map. Its size is 1007kb, which seems to be chosen so that
# primary gpt + grub = 1024KiB
# The 34 sectors for the primary gpt will be subtracted later on
# The 1 MiB will be subtracted later on, once we know what the subsequent partition is
from ..partitions.unformatted import UnformattedPartition
self.grub_boot = UnformattedPartition(Sectors('1MiB', sector_size), last_partition())
self.partitions.append(self.grub_boot)
@ -63,6 +63,15 @@ class GPTPartitionMap(AbstractPartitionMap):
self.root.size -= partition_gap
self.partitions.append(self.root)
if hasattr(self, 'grub_boot'):
# Mark the grub partition as a bios_grub partition
self.grub_boot.flags.append('bios_grub')
# Subtract the grub partition size from the subsequent partition
self.partitions[1].size -= self.grub_boot.size
else:
# Not using grub, mark the boot partition or root as bootable
getattr(self, 'boot', self.root).flags.append('legacy_boot')
# The first and last 34 sectors are reserved for the primary/secondary GPT
primary_gpt_size = Sectors(34, sector_size)
self.partitions[0].pad_start += primary_gpt_size
@ -72,13 +81,6 @@ class GPTPartitionMap(AbstractPartitionMap):
self.partitions[-1].pad_end += secondary_gpt_size
self.partitions[-1].size -= secondary_gpt_size
if hasattr(self, 'grub_boot'):
# Mark the grub partition as a bios_grub partition
self.grub_boot.flags.append('bios_grub')
else:
# Not using grub, mark the boot partition or root as bootable
getattr(self, 'boot', self.root).flags.append('legacy_boot')
super(GPTPartitionMap, self).__init__(bootloader)
def _before_create(self, event):