nik/FreedomBox
1
0
Fork 0
mirror of https://github.com/freedombox/FreedomBox.git synced 2026-06-17 11:10:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

snapshot: Use augeas for modifying fstab

Browse Source
This commit is contained in:
Sunil Mohan Adapa 2016-08-08 19:10:27 +05:30
parent d615709b8a
commit 395155d306
No known key found for this signature in database
GPG Key ID: 36C361440C9BC971
1 changed files with 30 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
actions/snapshot
View File

@ -20,11 +20,14 @@
Configuration helper for filesystem snapshots.
"""
import augeas
import argparse
import json
import os
import subprocess
FSTAB = '/etc/fstab'
AUG_FSTAB = '/files/etc/fstab'
def parse_arguments():
@ -57,20 +60,38 @@ def subcommand_setup(_):
command = ['snapper', 'create-config', '/']
subprocess.run(command, check=True)
# Add mountpoint for subvolumes.
with open(FSTAB, 'r') as fstab:
lines = fstab.readlines()
_add_fstab_entry('/')
def _add_fstab_entry(mount_point):
"""Add mountpoint for subvolumes."""
snapshots_mount_point = os.path.join(mount_point, '.snapshots')
aug = augeas.Augeas(flags=augeas.Augeas.NO_LOAD +
augeas.Augeas.NO_MODL_AUTOLOAD)
aug.set('/augeas/load/Fstab/lens', 'Fstab.lns')
aug.set('/augeas/load/Fstab/incl[last() + 1]', FSTAB)
aug.load()
spec = None
for line in lines:
if '.snapshots' in line:
for entry in aug.match(AUG_FSTAB + '/*'):
entry_mount_point = aug.get(entry + '/file')
if entry_mount_point == snapshots_mount_point:
return
if 'btrfs' in line:
spec = line.split(' ')[0]
if entry_mount_point == mount_point and \
aug.get(entry + '/vfstype') == 'btrfs':
spec = aug.get(entry + '/spec')
if spec:
with open(FSTAB, 'a') as fstab:
fstab.write(spec + ' /.snapshots btrfs subvol=.snapshots 0 1\n')
aug.set(AUG_FSTAB + '/01/spec', spec)
aug.set(AUG_FSTAB + '/01/file', snapshots_mount_point)
aug.set(AUG_FSTAB + '/01/vfstype', 'btrfs')
aug.set(AUG_FSTAB + '/01/opt', 'subvol')
aug.set(AUG_FSTAB + '/01/opt/value', '.snapshots')
aug.set(AUG_FSTAB + '/01/dump', '0')
aug.set(AUG_FSTAB + '/01/passno', '1')
aug.save()
def subcommand_list(_):