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bundles/backup-server: support raid0-ing multiple raidz

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This commit is contained in:
Franzi 2025-02-14 19:32:13 +01:00
parent 59596c08ae
commit 18b8c963ab
Signed by: kunsi
GPG key ID: 12E3D2136B818350
1 changed files with 45 additions and 18 deletions
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63
bundles/backup-server/metadata.py
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@ -1,3 +1,5 @@
from bundlewrap.exceptions import BundleError
defaults = {
'backup-server': {
'my_ssh_port': 22,
@ -69,25 +71,51 @@ def zfs_pool(metadata):
return {}
crypt_devices = {}
pool_devices = set()
unlock_actions = set()
for number, (device, passphrase) in enumerate(sorted(metadata.get('backup-server/encrypted-devices', {}).items())):
crypt_devices[device] = {
'dm-name': f'backup{number}',
'passphrase': passphrase,
}
pool_devices.add(f'/dev/mapper/backup{number}')
unlock_actions.add(f'action:dm-crypt_open_backup{number}')
devices = metadata.get('backup-server/encrypted-devices')
pool_opts = {
'devices': pool_devices,
}
# TODO remove this once we have migrated all systems
if isinstance(devices, dict):
pool_devices = set()
if len(pool_devices) > 2:
pool_opts['type'] = 'raidz'
elif len(pool_devices) > 1:
pool_opts['type'] = 'mirror'
for number, (device, passphrase) in enumerate(sorted(devices.items())):
crypt_devices[device] = {
'dm-name': f'backup{number}',
'passphrase': passphrase,
}
pool_devices.add(f'/dev/mapper/backup{number}')
unlock_actions.add(f'action:dm-crypt_open_backup{number}')
pool_config = [{
'devices': pool_devices,
}]
if len(pool_devices) > 2:
pool_config[0]['type'] = 'raidz'
elif len(pool_devices) > 1:
pool_config[0]['type'] = 'mirror'
elif isinstance(devices, list):
pool_config = []
for idx, intended_pool in enumerate(devices):
pool_devices = set()
for number, (device, passphrase) in enumerate(sorted(intended_pool.items())):
crypt_devices[device] = {
'dm-name': f'backup{idx}-{number}',
'passphrase': passphrase,
}
pool_devices.add(f'/dev/mapper/backup{idx}-{number}')
unlock_actions.add(f'action:dm-crypt_open_backup{idx}-{number}')
pool_config.append({
'devices': pool_devices,
'type': 'raidz',
})
else:
raise BundleError(f'{node.name}: unsupported configuration for backup-server/encrypted-devices')
return {
'backup-server': {
@ -100,9 +128,8 @@ def zfs_pool(metadata):
'pools': {
'backups': {
'when_creating': {
'config': [
pool_opts,
],
'config': pool_config,
**metadata.get('backup-server/zpool_create_options', {}),
},
'needs': unlock_actions,
# That's a bit hacky. We do it this way to auto-import