https://tracker.ceph.com/https://tracker.ceph.com/favicon.ico2015-03-31T04:36:50ZCeph Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=501962015-03-31T04:36:50ZSage Weilsage@newdream.net
<ul><li><strong>Description</strong> updated (<a title="View differences" href="/journals/50196/diff?detail_id=49254">diff</a>)</li></ul> Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=506372015-04-14T20:10:08ZSage Weilsage@newdream.net
<ul><li><strong>Target version</strong> changed from <i>v0.95</i> to <i>v9.0.2</i></li></ul> Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=514302015-05-06T21:55:52ZSamuel Justsjust@redhat.com
<ul><li><strong>File</strong> <a href="/attachments/download/1695/strawtest.tgz">strawtest.tgz</a> added</li></ul><p>I see a significant amount of movement for 3 hosts each of which with 4 osds with weights 1 2 3 4. Attaching a tarball with the test maps and a script for doing the comparison. Update make_maps.sh to point at the right crushtool.</p> Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=514312015-05-06T21:56:28ZSamuel Justsjust@redhat.com
<ul><li><strong>Assignee</strong> set to <i>Sage Weil</i></li></ul> Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=514342015-05-06T22:11:09ZSage Weilsage@newdream.net
<ul></ul><p>Samuel Just wrote:</p>
<blockquote>
<p>I see a significant amount of movement for 3 hosts each of which with 4 osds with weights 1 2 3 4. Attaching a tarball with the test maps and a script for doing the comparison. Update make_maps.sh to point at the right crushtool.</p>
</blockquote>
<p>The mapping changes look about right to me. It'll depend on how much the weights within any given bucket vary. And good to see that mappings when weights are equal do not change at all.</p> Ceph - Feature #11269: crush: quantify data movement for common straw -> straw2 migration scenarioshttps://tracker.ceph.com/issues/11269?journal_id=514352015-05-06T22:21:35ZSamuel Justsjust@redhat.com
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>Resolved</i></li></ul>