Re: How to cut a large file into small objects

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

------------------ 原始邮件 ------------------
发送时间: 2017年4月12日(星期三) 1:16
收件人: "冥王星" <945019856@xxxxxx>;
抄送: "ceph-users" <ceph-users@xxxxxxxxxxxxxx>;
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 <945019856@xxxxxx> 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 <kjetil@xxxxxxxxxxxx>
SRE, Medallia Inc
Phone: +1 (650) 739-6580
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