Hi,
I have four storage machines to build a ceph storage cluster as storage nodes. Each of them is attached a 120 GB HDD and a 1 TB HDD. Is it OK to think that those storage devices are same when write a ceph.conf?
For example, when setting osd pool default pg num , I thought: osd pool default pg num = (100 * 8 ) / 3 = 266, where osd pool default size = 3 and the number of OSDs is 8 (one Daemon per device).
And, when Add the OSD to the CRUSH map so that it can begin receiving data. You may also decompile the CRUSH map, add the OSD to the device list, add the host as a bucket (if it’s not already in the CRUSH map), add the device as an item in the host, assign it a weight, recompile it and set it.
ceph [--cluster {cluster-name}] osd crush add {id-or-name} {weight} [{bucket-type}={bucket-name} ...]
What is the meaning of weight? How should I set it to satisfy my hardware condition ?
--
Zhen Wang
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