Hide Forgot
IO-cache needs to disable caching when it receives file opens with the GF_OPEN_NOWB. Filing as a separate bug to help keep track for committing soon. See comments 7 and 8 in bz 902 for more info.
PATCH: http://patches.gluster.com/patch/3991 in master (performance/io-cache: Disable caching when files are opened with GF_OPEN_NOWB)