Re: librados/librbd compatibility issue with v0.56

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Quick update/reminder:

If you are running v0.56, please upgrade to v0.56.1.  Make sure you 
upgrade both the daemons and the client-side libraries.  v0.56 is protocol 
incompatible with both older and newer versions and should be avoided.

Also, we fixed a potentially data-loss causing bug in v0.56.1 (triggered 
by power loss or kernel panic).  The same fix is going into argonaut as 
well; v0.48.3 should be out tomorrow.

Thanks!
sage


On Fri, 4 Jan 2013, Sage Weil wrote:

> We identified a problem with the version of librbd/librados in v0.56.  
> There will be a v0.56.1 update in a few days that fixes it.  In the 
> meantime, be aware that v0.56 ceph-osds may not interact properly with 
> non-v0.56 radosgw or librbd clients, and v0.56 radosgw and librbd clients 
> will not interact properly with non-v0.56 OSDs.
> 
> If you are using v0.56, we recommend moving to the current testing branch, 
> which includes fixes queued up for v0.56.1.  You can get debs from e.g.
> 
>   http://gitbuilder.ceph.com/ceph-deb-precise-x86_64-basic/ref/testing/
> 
> or for other many other distros; see 
> 
>   http://ceph.com/docs/master/install/debian/#add-development-testing-packages
> 
> The fix is commit d3abd0fe0bb402ff403259d4b1a718a56331fc39 
> (921e06decebccc913c0e4f61916d00e62e7e1635 in testing branch).
> 
> Thanks!
> sage
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