Re: [MooseFS-Users] Multiple CRC failures

[Jakub Kruszona-Z. <jak...@ge...>]

> 
>> If there is lot of other things to do (replication of other undergoal chunks for example) then yes. Such chunk should be treated in the same way as any other undergoal chunk. Did you check the GOAL/VC table on the Info tab in mfs.cgi? Did you have "yellow" chunks? If not then maybe system created valid copy, but didn't remove damaged chunk.
> 
> Honestly, i've not looked at CGI page because I was seeing in the log
> multipe "chunk_readcrc", thus, CRC mismatch was still detected.
> If CRC is detected, I think that MooseFS still haven't replicated
> (fixing the CRC) the chunk.

I see that you have goal equal to number of servers. This is rare situation - MFS is usually used in big installation.

For such case I usually need special conditions in the code.

In general such problems are resolved in a way that first I create another copy and only then delete "broken" one. When goal is equal to number of servers than there is no place for creating such valid copy, so first I need to delete "broken" copy and then create valid one on the same server. Maybe this is why system didn't fix it. I'll check it.

> 
> This is a test cluster, no other operations where running.

Great !!!.

BTW. I've noticed another small issue. file '.metaid' on disks is not created when metaid is not known during initialization of chunkserver (case of first run). When metaid is received from the master it is stored only in 'chunkserverid.mfs', but disks are left unchanged. This is not serious, but still needs to be fixed.

> 
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-- 
Regards,
Jakub Kruszona-Zawadzki
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