Re: librados - Atomic Write

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Hello Noah,

In may case the ordering is importante and I seen that librados have an lock implementation which I’ll use that on my implementation. Thanks for your help.

Regards.

Italo Santos
http://italosantos.com.br/

On Tuesday, February 24, 2015 at 12:52, Noah Watkins wrote:

I'll take a shot at answering this:

Operations are atomic in the sense that there are no partial failures. Additionally, access to an object should appear to be serialized. So, two in-flight operations A and B will be applied in either A,B or B,A order. If ordering is important (e.g. the operations are dependent) then the application should enforce ordering.

----- Original Message -----
From: "Italo Santos" <okdokk@xxxxxxxxx>
Sent: Monday, February 23, 2015 12:01:15 PM
Subject: [ceph-users] librados - Atomic Write

Hello,

The librados write ops are atomic? I mean what happens if two different clients try to write the same object with the same content?

Regards.

Italo Santos


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