Re: how does ceph handle object writes?

[Gregory Farnum <greg@xxxxxxxxxxx>]

Almost! The primary OSD sends out the data to its replicas simultaneously with putting it into the journal.

-Greg

On Monday, January 20, 2014, Tim Zhang <cofol1986@xxxxxxxxx> wrote:

Hi guys,

I wonder how does store objects. Consider the writing obj process,  IMO, osd first get obj data from client, then the primary osd get the data, store the data in journal(with sync) , after that the primary osd spray the obj to other replica osd simultaneously, and each replica osd will write the journal with sync and then reply to the primary osd. After recieving all the replies from replica osd,  primary osd will report the write op is finished. Is there anything wrong?

-- 
Software Engineer #42 @ http://inktank.com | http://ceph.com
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