Hi All,
I'm testing erasure coded pools. Is there any protection from bit-rot
errors on object read? If I modify one bit in object part (directly on
OSD) I'm getting *broken*object:
mon-01:~ # rados --pool ecpool get `hostname -f`_16 - | md5sum
bb2d82bbb95be6b9a039d135cc7a5d0d -
# modify one bit directly on OSD
mon-01:~ # rados --pool ecpool get `hostname -f`_16 - | md5sum
02f04f590010b4b0e6af4741c4097b4f -
# restore bit to original value
mon-01:~ # rados --pool ecpool get `hostname -f`_16 - | md5sum
bb2d82bbb95be6b9a039d135cc7a5d0d -
If I run deep-scrub on modified bit I'm getting inconsistent PG which is
correct in this case. After restoring bit and running deep-scrub again
all PGs are clean.
[ceph version 0.94.1 (e4bfad3a3c51054df7e537a724c8d0bf9be972ff)]
--
PS
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