[DRBD-user] Version Confusion

Paul Court pc at matrixonline.co.uk
Thu Dec 6 17:40:08 CET 2007

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Philipp Reisner wrote:
> On Thursday 06 December 2007 14:05:56 Paul Court wrote:
>> Can someone clarify the versioning system of DRBD. After reading
>> Florians blog I am confident that 8.1 is the branch that is being preped
>> for inclusion into Linux, but should I be using the 8.0.x branch or the
>> 8.2.x branch on my systems?
>> I am currently setting up and testing a new rollout so I have no issues
>> with backwards compatibility. This is the first of our clusters that
>> will be using DRBD.
>> We are using it with MySQL so I was particularly focused on the fact
>> that MySQL had helped a lot with the development of the new network
>> checksum feature in 8.2, but I thought that 8.2 was the development
>> branch and 8.0 the stable branch.
>> Can someone clarify this for me?
> Hi,
> I just updated http://www.drbd.org/releases.html .
> 8.x.y runs only on Linux-2.6.x. 
> 8.0.y 
> Is frozen an only receives bug fixes. The wire protocol is frozen as well. 
> 8.1 
> Is functional equivalent to 8.0.y, but closer to Linux's coding style and without 
> our compatibility layers to run on older 2.6.x kernels. This is what we suggest for 
> Linux-mainline inclusion. 
> 8.2.y 
> Receives new features, and all bugfixes of 8.0. The protocol might get extended with 
> new releases. The idea is to have here the same development model as is used for the 
> Linux-2.6 kernel. We include new features, and try to get have it stable at the same 
> time. 
> All 8.x.y releases are protocol compatible
> It is up to you if you got with the deeply frozen drbd-8.0.x or with the
> feature enriched drbd-8.2.x. They are protocol compatible, so up and down
> grading is always possible, as "roling upgrade". 
> drbd-8.2.2 (which will be released RSN) will have the online verify
> feature...
> -Phil

Perfect, thanks Phil

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