[pve-devel] [PATCH-SERIES v3] fix #3111: fix interaction of snapshot operations with replication

[Fabian Ebner]

Any feedback for this?

Am 12.08.21 um 13:00 schrieb Fabian Ebner:
> For more context, see also:
> https://lists.proxmox.com/pipermail/pve-devel/2021-August/049694.html
> 
> Changes from v2:
>      * Many new patches, as the approach is different:
>        For one, only replication snapshots that are blocking rollback
>        are removed. Second, consider more snapshot candidates when
>        probing for an incremental replication base. Last, instead of
>        directly running replication after rollback, prevent snapshot
>        deletion if it might be the current incremental replication
>        base.
> 
> Many thanks to Fabian G. for discussing those ideas with me!
> 
> All patches are new in v3, except guest-common patch #1, which
> hasn't changed much, and would fix some issues already by itself.
> 
> I think nothing requires an explicit dependency bump, but some things,
> like "remove only the real blockers", will only start working when all
> the pieces are in place.
> 
> 
> storage:
> 
> Fabian Ebner (3):
>    zfspool: add zfs_get_sorted_snapshot_list helper
>    zfspool: add blockers parameter to volume_snapshot_is_possible
>    test: zfspool: extend some rollback is possible tests with new
>      blockers parameter
> 
>   PVE/Storage.pm                 |  4 +--
>   PVE/Storage/BTRFSPlugin.pm     |  2 +-
>   PVE/Storage/Plugin.pm          |  5 ++-
>   PVE/Storage/ZFSPoolPlugin.pm   | 65 +++++++++++++++-------------------
>   test/run_test_zfspoolplugin.pl | 65 +++++++++++++++++++++++++---------
>   5 files changed, 85 insertions(+), 56 deletions(-)
> 
> 
> container:
> 
> Fabian Ebner (1):
>    config: rollback is possible: add blockers parameter
> 
>   src/PVE/LXC/Config.pm | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
> 
> 
> qemu-server:
> 
> Fabian Ebner (1):
>    config: rollback is possible: add blockers parameter
> 
>   PVE/QemuConfig.pm | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> 
> guest-common:
> 
> Fabian Ebner (7):
>    partially fix #3111: snapshot rollback: improve removing replication
>      snapshots
>    config: rollback: factor out helper for removing replication snapshots
>    partially fix #3111: further improve removing replication snapshots
>    replication: remove unused variable and style fixes
>    replication: pass guest config to find_common_replication_snapshot
>    partially fix #3111: replication: be less picky when selecting
>      incremental base
>    fix #3111 config: snapshot delete: check if replication still needs it
> 
>   src/PVE/AbstractConfig.pm    | 120 +++++++++++++++++++++++++++++++----
>   src/PVE/Replication.pm       |  66 ++++++++++++++++----
>   src/PVE/ReplicationConfig.pm |  14 +++++
>   3 files changed, 177 insertions(+), 23 deletions(-)
>