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https://issues.apache.org/jira/browse/HDDS-1771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang updated HDDS-1771:
----------------------------
Description:
In fault injection test, one possible simulation is to create slow disk IO.
This test can assist in 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.
was:
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.
> 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
> Priority: Major
>
> In fault injection test, one possible simulation is to create slow disk IO.
> This test can assist in 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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