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Support #675
closedhot to adjust replicate level,disk not the same size
Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
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Reviewed:
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Pull request ID:
Description
some disk is 3T,while some disks less 50G,
who can tell me the meaning of crush file.
who can tell me the meaning of crush file.
- types
type 0 device
type 1 domain
type 2 pool
- buckets
domain root {
id -1 # do not change unnecessarily
alg straw
hash 0 # rjenkins1
item device0 weight 1.000
item device1 weight 1.000
item device2 weight 1.000
}
- rules
rule data {
ruleset 0
type replicated
min_size 1
max_size 10
step take root
step choose firstn 0 type device
step emit
}
Updated by Sage Weil over 13 years ago
- Status changed from New to Closed
The crush weight should be proportional to the disk size, or node throughput, whichever you prefer. It depends on if your goal is to fill the disks or to maximize throughput. Either way, the weight controls the amount of data (and thus IO) each osd gets.
Updated by longguang yue over 13 years ago
wo do not know what you mean,can you take above as example, 50G,and 3T,how to adjust device weight????
i try several times,but it does not work,
i adjust one device 0,but it still store data,
i adjust 1:1000,but the proportion is not 1:1000, so .......i do not know how.
----
2. meanwhile i do not know how to debug ceph,
http://ceph.newdream.net/wiki/Debugging,
i want to open all-all debug options,how to configure cepg.conf?????
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