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Allow passing negative numbers to specify partition boundary relative to disk end

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Fixes: https://github.com/ansible/ansible/issues/43369
This commit is contained in:
Robert Osowiecki 2020-04-07 22:13:24 +02:00
commit 41a51d88f9
2 changed files with 16 additions and 5 deletions
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2
changelogs/fragments/parted_negative_numbers.yml Normal file
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@ -0,0 +1,2 @@
minor_changes:
- "parted - accept negative numbers in ``part_start`` and ``part_end``"

19
plugins/modules/system/parted.py
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@ -68,15 +68,17 @@ options:
part_start: part_start:
description: description:
- Where the partition will start as offset from the beginning of the disk, - Where the partition will start as offset from the beginning of the disk,
that is, the "distance" from the start of the disk. that is, the "distance" from the start of the disk. Negative numbers
specify distance from the end of the disk.
- The distance can be specified with all the units supported by parted - The distance can be specified with all the units supported by parted
(except compat) and it is case sensitive, e.g. C(10GiB), C(15%). (except compat) and it is case sensitive, e.g. C(10GiB), C(15%).
type: str type: str
default: 0% default: 0%
part_end : part_end:
description: description:
- Where the partition will end as offset from the beginning of the disk, - Where the partition will end as offset from the beginning of the disk,
that is, the "distance" from the start of the disk. that is, the "distance" from the start of the disk. Negative numbers
specify distance from the end of the disk.
- The distance can be specified with all the units supported by parted - The distance can be specified with all the units supported by parted
(except compat) and it is case sensitive, e.g. C(10GiB), C(15%). (except compat) and it is case sensitive, e.g. C(10GiB), C(15%).
type: str type: str
@ -178,6 +180,13 @@ EXAMPLES = r'''
state: present state: present
part_start: 1GiB part_start: 1GiB
- name: Create a new primary partition with a size of 1GiB at disk's end
parted:
device: /dev/sdb
number: 3
state: present
part_start: -1GiB
# Example on how to read info and reuse it in subsequent task # Example on how to read info and reuse it in subsequent task
- name: Read device information (always use unit when probing) - name: Read device information (always use unit when probing)
parted: device=/dev/sdb unit=MiB parted: device=/dev/sdb unit=MiB
@ -206,9 +215,9 @@ parted_units = units_si + units_iec + ['s', '%', 'cyl', 'chs', 'compact']
def parse_unit(size_str, unit=''): def parse_unit(size_str, unit=''):
""" """
Parses a string containing a size of information Parses a string containing a size or boundary information
""" """
matches = re.search(r'^([\d.]+)([\w%]+)?$', size_str) matches = re.search(r'^(-?[\d.]+)([\w%]+)?$', size_str)
if matches is None: if matches is None:
# "<cylinder>,<head>,<sector>" format # "<cylinder>,<head>,<sector>" format
matches = re.search(r'^(\d+),(\d+),(\d+)$', size_str) matches = re.search(r'^(\d+),(\d+),(\d+)$', size_str)