erasure-code: store and compare encoded contents (firefly) #2480
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ghost
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November 25, 2014 16:57
Introduce ceph_erasure_code_non_regression to check and compare how an
erasure code plugin encodes and decodes content with a given set of
parameters. For instance:
./ceph_erasure_code_non_regression \
--plugin jerasure \
--parameter technique=reed_sol_van \
--parameter k=2 \
--parameter m=2 \
--stripe-width 3181 \
--create \
--check
Will create an encoded object (--create) and store it into a directory
along with the chunks, one chunk per file. The directory name is derived
from the parameters. The content of the object is a random pattern of 31
bytes repeated to fill the object size specified with --stripe-width.
The check function (--check) reads the object back from the file,
encodes it and compares the result with the content of the chunks read
from the files. It also attempts recover from one or two erasures.
Chunks encoded by a given version of Ceph are expected to be encoded
exactly in the same way by all Ceph versions going forward.
http://tracker.ceph.com/issues/9420 Refs: #9420
Signed-off-by: Loic Dachary <loic-201408@dachary.org>
Clone the archive of encoded objects and decode all archived objects, up to and including the current ceph version. http://tracker.ceph.com/issues/9420 Refs: #9420 Signed-off-by: Loic Dachary <loic-201408@dachary.org>
Signed-off-by: Loic Dachary <loic-201408@dachary.org>
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…ssion-firefly erasure-code: store and compare encoded contents (firefly)
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http://tracker.ceph.com/issues/9420 Refs: #9420
Signed-off-by: Loic Dachary loic-201408@dachary.org
(cherry picked from commit 497a82b)