openstack/swift
Code Issues Proposed changes

Merge "Require that known-bad EC schemes be deprecated"

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2017-06-22 01:11:03 +00:00
committed by Gerrit Code Review
parent 2cb74b1b84 2c3ac543f4
commit 169d1d8ab8
4 changed files with 25 additions and 16 deletions
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9
doc/source/overview_erasure_code.rst
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@@ -255,6 +255,15 @@ with the specified policy name and interacting as usual.
case a change in the configuration is desired, you must create a new policy
and migrate the data to a new container.
.. warning::
Using ``isa_l_rs_vand`` with more than 4 parity fragments creates fragments
which may in some circumstances fail to reconstruct properly or (with
liberasurecode < 1.3.1) reconstruct corrupted data. New policies that need
large numbers of parity fragments should consider using ``isa_l_rs_cauchy``.
Any existing affected policies must be marked deprecated, and data in
containers with that policy should be migrated to a new policy.
Migrating Between Policies
==========================