Re: [PATCH 0/30] mds: lookup-by-ino & fixes

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On 05/28/2013 03:21 AM, Sage Weil wrote:
> On Fri, 24 May 2013, Yan, Zheng wrote:
>> On 05/24/2013 02:22 AM, Sage Weil wrote:
>>> On Thu, 23 May 2013, Yan, Zheng wrote:
>>>> From: "Yan, Zheng" <zheng.z.yan@xxxxxxxxx>
>>>>
>>>> Patch 1~21 are random fixes for MDS cluster. Patch 22~28 rework
>>>> the backtrace handling. Patch 29 introduces lookup-by-ino helper.
>>>> Path 30 uses the lookup-by-ino helper to fix issue #4850.
>>>>
>>>> This patch series are also in:
>>>>   git://github.com/ukernel/ceph.git wip-mds
>>>
>>> Awesome!  I pushed this to wip-mds in ceph.git for now.  Note that 
>>> gitbuilders are picking up a failure due to the encoding changes.  For the 
>>> types and messages that change, can you mark them in the 
>>> ceph-object-corpus.git tree?  Look for the forward_incompat/ dirs and 
>>> follow that example.
>>>
>> Could you be more specific. Change in patch 14 should only affect MExportDir
>> and MExportCaps, object-corpus does not contain objects for these two messages.
>> Patch 27 looks suspicious, does the incompatible change you mentioned cause the
>> failure?
> 
> http://gitbuilder.sepia.ceph.com/gitbuilder-oneiric-amd64/log.cgi?log=f8499e07035fbff063b50b13ac295432884c7e27
> 
> is the one I saw, but there are likely others; run 'make check-local' to 
> run the encoding checks.
> 

It turned out to be a bug in path "mds: journal backtrace update in EMetaBlob::fullbit"
I forgot to initialize 'state' when decoding old format.

Regards
Yan, Zheng
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