Eric Yang created HDDS-1771:
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Summary: Add slow IO disk test to fault injection test
Key: HDDS-1771
URL: https://issues.apache.org/jira/browse/HDDS-1771
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Reporter: Eric Yang
In fault injection test, one possible simulation to run is to create slow disk
IO to assist developing a set of timing profiles that works for Ozone cluster.
When we write to a file, the data travels across a bunch of buffers and caches
before it is effectively written to the disk. By controlling cgroup blkio rate
in Linux Kernel, we can simulate slow disk read, write. Docker provides the
following parameters to control cgroup:
{code}
--device-read-bps=""
--device-write-bps=""
--device-read-iops=""
--device-write-iops=""
{code}
The test will be added to read/write test with docker compose file as
parameters to test the timing profiles.
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