[pbs-devel] [PATCH v4 proxmox-backup 0/2] fix rare race in garbage collection

[Christian Ebner]

Fixes a rare race in phase 1 of garbage collection, as described in
more detail in the commit message of patch 2.
This patches are intended as stop gap for the time being, until a
different approach to guarantee the presence of index files also
after pruning has been explored and implemented, as suggested by
Thomas [0].

Changes since version 3:
- Refactor open_index_reader to allow distinction between missing index
  file and ignored archive type blob.
- Iterate snapshots from newest to oldest to further reduce race window
  and simplify accounting logic.

[0] https://lore.proxmox.com/pbs-devel/7bac779b-e564-4f24-b58c-a4411c2a59aa@proxmox.com/

Christian Ebner (2):
  garbage collection: distinguish variants for failed open index reader
  garbage collection: fix rare race in chunk marking phase

 pbs-datastore/src/datastore.rs | 141 ++++++++++++++++++++++-----------
 1 file changed, 96 insertions(+), 45 deletions(-)

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2.39.5