hello, loic:
I had a cluster build with hammer 0.94.10, then I used the following
commands to change the algorithm from "straw" to "straw2".
1. ceph osd crush tunables hammer
2. ceph osd getcrushmap -o /tmp/cmap
3. crushtool -d /tmp/cmap -o /tmp/cmap.txt
4. vim /tmp/cmap.txt and change the algorithm of each bucket from
"straw" to "straw2"
5. crushtool -c /tmp/cmap.txt -o /tmp/cmap
6. ceph osd setcrushmap -i /tmp/cmap
7. ceph osd crush reweight-all
after that, I used "python crush" to optimize the cluster, the version
of "python crush" is 1.0.32
1. ceph report > report.json
2. crush optimize --crushmap report.json --out-path optimized.crush
Unfortunately, there was an error in the output:
2017-05-30 18:48:01,803 42.1 map to [4, 9] instead of [4, 8]
2017-05-30 18:48:01,838 49.3af map to [9, 2] instead of [9, 3]
2017-05-30 18:48:01,838 49.e3 map to [6, 4] instead of [6, 5]
2017-05-30 18:48:01,838 49.e1 map to [7, 2] instead of [7, 3]
2017-05-30 18:48:01,838 49.e0 map to [5, 1] instead of [5, 0]
2017-05-30 18:48:01,838 49.20d map to [3, 1] instead of [3, 0]
2017-05-30 18:48:01,838 49.20c map to [2, 9] instead of [2, 8]
2017-05-30 18:48:01,838 49.36e map to [6, 1] instead of [6, 0]
......
Traceback (most recent call last):
File "/usr/bin/crush", line 25, in <module>
sys.exit(Ceph().main(sys.argv[1:]))
File "/usr/lib64/python2.7/site-packages/crush/main.py", line 136, in main
return self.constructor(argv).run()
File "/usr/lib64/python2.7/site-packages/crush/optimize.py", line 373, in run
crushmap = self.main.convert_to_crushmap(self.args.crushmap)
File "/usr/lib64/python2.7/site-packages/crush/ceph/__init__.py",
line 690, in convert_to_crushmap
c.parse(crushmap)
File "/usr/lib64/python2.7/site-packages/crush/__init__.py", line 138, in parse
return self.parse_crushmap(self._convert_to_crushmap(something))
File "/usr/lib64/python2.7/site-packages/crush/ceph/__init__.py",
line 416, in _convert_to_crushmap
crushmap = CephReport().parse_report(something)
File "/usr/lib64/python2.7/site-packages/crush/ceph/__init__.py",
line 137, in parse_report
raise MappingError("some mapping failed, please file a bug at "
crush.ceph.MappingError: some mapping failed, please file a bug at
http://libcrush.org/main/python-crush/issues/new
Do you know what the problem is? can you help me? I would be very
grateful to you.
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