[pbs-devel] [PATCH proxmox-backup 0/3] rework GC-related locks

[Fabian Grünbichler]

this series reworks some of the locking behaviour surrounding GC.

the first patch removes a potentially problematic combination of
std::sync::Mutex and async S3 code (this should be the last such code
path), by storing the ProcessLocker guard inside the mutex while holding
it just for storing/querying/dropping that guard, instead of for the
duration of GC.

the second and third patches get rid of racy interactions between
pre-reload backup sessions and post-reload GC tasks. while this race
doesn't lead to data loss, it breaks the expected priority of such
tasks.

Fabian Grünbichler (3):
  GC: rework locking logic
  backup env: keep a shared chunk store lock for duration of backup
  index writers: remove chunk store lock

 pbs-datastore/src/datastore.rs     | 544 +++++++++++++++--------------
 pbs-datastore/src/dynamic_index.rs |   6 +-
 pbs-datastore/src/fixed_index.rs   |   6 +-
 src/api2/backup/environment.rs     |   5 +
 src/api2/backup/mod.rs             |   4 +-
 5 files changed, 295 insertions(+), 270 deletions(-)

-- 
2.47.3