thank you, the  answer  give me the confidence  to use ceph well

------------------ 原始邮件 ------------------
发件人: "Kjetil J��rgensen" <[email protected]>;
发送时间: 2017年4月12日(星期三) 1:16
收件人: "冥王星" <[email protected]>;
抄送: "ceph-users" <[email protected]>;
主题: Re: [ceph-users] How to cut a large file into small objects



Hi,

rados - Does not shard your object (as far as I know, there may be a striping 
API, although it may not do quite what you want)
cephfs - implemented on top of rados - does it's own object sharding (I'm fuzzy 
on the details)
rbd - implemented on top of rados - does shard into 2^order sized objects. 
(there's striping support in librbd as well).
radosgw - implemented on top of rados - I'd imagine this does shard into 
smaller objects as well


Cheers,
KJ


On Tue, Apr 11, 2017 at 7:42 AM, 冥王星 <[email protected]> wrote:
In the ceph, a large file will be cut into small objects(2MB ~4MB), then�� the 
process Pool ---(crush)----> PG -----> OSD
Here,I have a question.�� How to cut a large file into small objects??�� 
it'done by the ceph itself or some other way ?
I try this command:�� rados put test-object xxx.iso�� --pool=data������ but the 
large file xxx.iso seem not be cut into small objects.
I feel confused. I wish some one can help me solve the question.

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-- 
Kjetil Joergensen <[email protected]>

SRE, Medallia Inc
Phone: +1 (650) 739-6580
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