[Bug 2082030] Re: rgw could not reset user stats: Value too large for defined data type

[Dave Jones]

Channelling the SRU team, I predict the following questions may arise:

The patch contains several copies of the added patch file. This appears
to be because src/test/{debian-jessie,ubuntu-16.04,ubuntu-18.04}
contains symlinks to debian/ which has caused the debdiff to include
erroneous changes. It may be preferable to use git to generate the diff.

The test case, while doubtless accurate, assumes a fair amount of
knowledge on the part of the tester. Does "Deploy a 15.2.17 ceph
cluster" expand to a few commands, or is it more like a morning's work?
If it's horribly complex, then I can see the case for keeping the test-
case as it is and relying on experienced testers, but if it's possible
to expand it into something I (or others) could follow blindly, that
would be preferable.

The regression potential is minimal and definitely needs expanding.
Expanding the size of a field can have any number of knock-on side
effects in various contexts (e.g. ABI or network protocol
compatibility). I'm guessing those aren't applicable here, but the SRU
team aren't going to guess: they'll want to know explicitly why
modifying this (default) field size won't / can't impact existing
deployments and / or any packages that depend on this one.

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https://bugs.launchpad.net/bugs/2082030

Title:
  rgw could not reset user stats: Value too large for defined data type

Status in ceph package in Ubuntu:
  New
Status in ceph source package in Focal:
  New

Bug description:
  [Impact]

  reset-stats is designed to fix the user stat inconsistency which could happen due to rgw bugs
  But it failed on octopus:
  # radosgw-admin user stats --uid taodd --reset-stats
  ERROR: could not reset user stats: (75) Value too large for defined data type

  This issue caused users unable to create new objects on buckets that
  ran out of quota because of the inconsistent user stats.

  [Test Case]

  1. Deploy a 15.2.17 ceph cluster

  2. Create a bucket and put some objects to this bucket

  3. Run the command "radosgw-admin user stats --uid taodd --reset-
  stats", you will see the same error

  4. Apply the patched package, the same command will reset the headers
  successfully

  
  [Potential Regression]
  Requires 32 extra bytes to store the return value, not a concern

  [Other Info]
  Upstream has the fix https://github.com/ceph/ceph/pull/41809, but only backported down to Pacific.

  We need to backport this to Ubuntu octopus ceph package.

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