zrepl/endpoint
Christian Schwarz fb6a9be954 fix encrypt-on-receive with placeholders
fixes https://github.com/zrepl/zrepl/issues/504

Problem:
  plain send + recv with root_fs encrypted + placeholders causes plain recvs
  whereas user would expect encrypt-on-recv
Reason:
  We create placeholder filesytems with -o encryption=off.
  Thus, children received below those placeholders won't inherit
  encryption of root_fs.
Fix:
  We'll have three values for `recv.placeholders.encryption: unspecified (default) | off | inherit`.
  When we create a placeholder, we will fail the operation if  `recv.placeholders.encryption = unspecified`.
  The exception is if the placeholder filesystem is to encode the client identity ($root_fs/$client_identity) in a pull job.
  Those are created in `inherit` mode if the config field is `unspecified` so that users who don't need
  placeholders are not bothered by these details.

Future Work:
  Automatically warn existing users of encrypt-on-recv about the problem
  if they are affected.
  The problem that I hit during implementation of this is that the
  `encryption` prop's `source` doesn't quite behave like other props:
  `source` is `default` for `encryption=off` and `-` when `encryption=on`.
  Hence, we can't use `source` to distinguish the following 2x2 cases:
  (1) placeholder created with explicit -o encryption=off
  (2) placeholder created without specifying -o encryption
  with
  (A) an encrypted parent at creation time
  (B) an unencrypted parent at creation time
2021-12-18 15:12:47 +01:00
..
context.go [#307] add package trace, integrate it with logging, and adopt it throughout zrepl 2020-05-19 11:30:02 +02:00
endpoint_abstractions_cache.go Reformat all files with make format. 2020-08-31 23:57:45 +02:00
endpoint_guarantees.go Reformat all files with make format. 2020-08-31 23:57:45 +02:00
endpoint_metrics.go replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 2020-07-26 20:32:35 +02:00
endpoint_zfs_abstraction_last_received_hold.go Reformat all files with make format. 2020-08-31 23:57:45 +02:00
endpoint_zfs_abstraction_replication_cursor.go Reformat all files with make format. 2020-08-31 23:57:45 +02:00
endpoint_zfs_abstraction_step_hold.go replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 2020-07-26 20:32:35 +02:00
endpoint_zfs_abstraction_test.go zfs.NilBool: document its purpose and move it to its own package 'nodefault' 2021-02-20 17:04:57 +01:00
endpoint_zfs_abstraction.go zfs.NilBool: document its purpose and move it to its own package 'nodefault' 2021-02-20 17:04:57 +01:00
endpoint_zfs_helpers_repr_test.go endpoint: refactor, fix stale holds on initial replication failure, zfs-abstractions subcmd, more efficient ZFS queries 2020-04-18 12:26:03 +02:00
endpoint_zfs_helpers_repr.go endpoint: refactor, fix stale holds on initial replication failure, zfs-abstractions subcmd, more efficient ZFS queries 2020-04-18 12:26:03 +02:00
endpoint_zfs_helpers_types.go endpoint: refactor, fix stale holds on initial replication failure, zfs-abstractions subcmd, more efficient ZFS queries 2020-04-18 12:26:03 +02:00
endpoint.go fix encrypt-on-receive with placeholders 2021-12-18 15:12:47 +01:00
jobid.go replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 2020-07-26 20:32:35 +02:00
placeholdercreationencryptionproperty_enumer.go fix encrypt-on-receive with placeholders 2021-12-18 15:12:47 +01:00
replicationguaranteekind_enumer.go replication + endpoint: replication guarantees: guarantee_{resumability,incremental,nothing} 2020-07-26 20:32:35 +02:00