osd: Remove redundant incompat feature

We can remove this CompatSet bit without worry because the only
way it could have been set is if an erasure coded pool was create.
This isn't supported as of yet.

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Config OSD when CEPH_FEATURE_OSD_ERASURE_CODES feature first seen

Set the OSD superblock CEPH_OSD_FEATURE_INCOMPAT_SHARDS and
notify the filestore through set_allow_sharded_objects() in that order.

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Determine if compatibility is required due to back level OSDs

fixes: #7039

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Fix problems in ReplicatedPG::do_op() logic

Fix assert(is_degraded_object(soid)) in ReplicatedPG::wait_for_degraded_object()
  Use last_backfill_started as the backfill line
  Handle uncommon case of multi op source after backfill line and target before
  backfill line and !is_degraded_object().
  Include backfill line itself for before_backfill (<= instead of <)

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Return false for func that returns bool

Signed-off-by: David Zafman <david.zafman@inktank.com>
messages, os, osd: Clean-up g/hobject_t MAX handling

Add check of is_max() before updating an unset pool
Use efficient is_max() instead of compare with hobject::get_max()

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Recovery reservations need to include backfill peers

Caused by 86e4fd4f7a9848511e1bf9ae433fcd3a35a0818f

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Interim working version with backfill reserve state changes

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Change waiting_on_backfill to a set<int>

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Interim backfill changes

Make peer_backfill_info a map which holds a
BackfillInterval for all backfill targets.
Initially see if recover_backfill() can just backfill
the first one and mark them all finished.

Signed-off-by: David Zafman <david.zafman@inktank.com>
osd: Implement multiple backfill target handling

Fixes: #5858

Signed-off-by: David Zafman <david.zafman@inktank.com>