Commit ee7289bf authored by Committed by Sage Weil
ceph: allow sync_read/write return partial successed size of read/write.
For sync_read/write, it may do multi stripe operations.If one of those met erro, we return the former successed size rather than a error value. There is a exception for write-operation met -EOLDSNAPC.If this occur,we retry the whole write again. Signed-off-by: Jianpeng Ma <firstname.lastname@example.org>
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