starlingx/metal
Code Issues Proposed changes

Persistent backup partition

Browse Source 
Add a backup partition that has
the following characteristics:
- It will never be deleted
  (not at install, reinstall, upgrade nor B&R)
- The partition will have 10G
- It will be resizable at upgrades

Story: 2007403
Task: 39548
Change-Id: I2ec9f70d00a38568fc00063cdaa54ec3be48dc47
Signed-off-by: Mihnea Saracin <Mihnea.Saracin@windriver.com>
This commit is contained in:
Mihnea Saracin
2020-04-15 20:25:22 +03:00
parent 718a68ff90
commit ece0dd0ce5
7 changed files with 254 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
mtce/src/scripts/wipedisk
View File

@@ -94,18 +94,51 @@ then
fi
fi
# Note that the BA5EBA11-0000-1111-2222- is the prefix used by STX and it's defined in sysinv constants.py.
# Since the 000000000001 suffix is used by custom stx LVM partitions,
# the next suffix is used for the persistent backup partition (000000000002)
BACKUP_PART_GUID="BA5EBA11-0000-1111-2222-000000000002"
part_type_guid_str="Partition GUID code"
for dev in $WIPE_HDD
do
if [[ -e $dev ]]
then
echo "Wiping $dev..."
wipefs -f -a $dev
if [ "$dev" == "$rootfs" ]
then
part_numbers=( $(parted -s $dev print | awk '$1 == "Number" {i=1; next}; i {print $1}') )
for part_number in "${part_numbers[@]}"; do
part=$dev$part_number
case $part in
*"nvme"*)
part=${dev}p${part_number}
;;
esac
sgdisk_part_info=$(flock $dev sgdisk -i $part_number $dev)
part_type_guid=$(echo "$sgdisk_part_info" | grep "$part_type_guid_str" | awk '{print $4;}')
if [ "$part_type_guid" == $BACKUP_PART_GUID ]; then
echo "Skipping wipe backup partition $part..."
continue
fi
echo "Wiping partition $part..."
wipefs -f -a $part
# Clearing previous GPT tables or LVM data
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
dd if=/dev/zero of=$dev bs=512 count=34
dd if=/dev/zero of=$dev bs=512 count=34 seek=$((`blockdev --getsz $dev` - 34))
# Clearing previous GPT tables or LVM data
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
dd if=/dev/zero of=$part bs=512 count=34
dd if=/dev/zero of=$part bs=512 count=34 seek=$((`blockdev --getsz $part` - 34))
done
else
echo "Wiping $dev..."
wipefs -f -a $dev
# Clearing previous GPT tables or LVM data
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
dd if=/dev/zero of=$dev bs=512 count=34
dd if=/dev/zero of=$dev bs=512 count=34 seek=$((`blockdev --getsz $dev` - 34))
fi
fi
done