[Bug 1843085] [NEW] Need backport of 0-length gc chain fixes to Luminous

[Kellen Renshaw]

Public bug reported:

This issue in the Ceph tracker has been encountered repeatedly with significant adverse effects on Ceph 12.2.11/12 in Bionic:
https://tracker.ceph.com/issues/38454

This PR is the likely candidate for backporting to correct the issue:
https://github.com/ceph/ceph/pull/26601

** Affects: ceph (Ubuntu)
     Importance: Undecided
         Status: New

** Bug watch added: tracker.ceph.com/issues #38714
   http://tracker.ceph.com/issues/38714

** Bug watch added: tracker.ceph.com/issues #23223
   http://tracker.ceph.com/issues/23223

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https://bugs.launchpad.net/bugs/1843085

Title:
  Need backport of 0-length gc chain fixes to Luminous

Status in ceph package in Ubuntu:
  New

Bug description:
  This issue in the Ceph tracker has been encountered repeatedly with significant adverse effects on Ceph 12.2.11/12 in Bionic:
  https://tracker.ceph.com/issues/38454

  This PR is the likely candidate for backporting to correct the issue:
  https://github.com/ceph/ceph/pull/26601

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