On 26/03/2016 11:58 PM, Pranith Kumar Karampuri wrote:
I don't think it is heal info that is blocking I/O. I think it is client triggering heal and block the fop until heal completes that results in this pattern. This data-heal disabling should get you out of this problem.
I'm not sure this is the case. Disabling data-heal didn't help. And I wasn't observing slow i/o, it was blocked altogether for over an hour. While this was happening cpu and iowait were under 5%. The moment I cancelled the "gluster volume heal <ds> info" call i/o resumed.
Unfortunately I can't resume testing right now as the cluster is being backed up, takes around 18 hours.
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