[Pvfs2-developers] msgpair error

[Sam Lang]

On Jun 168, at 1:28PM, Sam Lang wrote:

>
> On Jun 16, 2006, at 6:44 PM, Pete Wyckoff wrote:
>
>> slang at mcs.anl.gov wrote on Fri, 16 Jun 2006 17:05 -0500:
>>> I haven't been able to reproduce this specific error or get  
>>> dbench to
>>> fail for me, but Murali just committed a bunch of fixes to bugs in
>>> the keyval changes I made recently that I could imagine causing a  
>>> lot
>>> of weird behaviors.  If you find that these commits fix the dbench
>>> errors you were seeing, let me know.  I'd prefer to wait to cleanup
>>> the error handling on the server (db->err and the weird EIO case) as
>>> well as the msgpairarray problems until after the release.
>>
>> That does change things, but it's still a bit funky.
>>
>> My configure line looks like (straight tcp, no ib):
>>
>> CFLAGS=-g ../pvfs2/configure \
>>         --prefix=/usr/local/pvfs2-test \
>> 	--enable-shared \
>> 	--enable-segv-backtrace \
>> 	--enable-epoll \
>> 	--with-kernel=/usr/src/kernel/linux-2.6.16
>>
>> Then I start 1 server with this config:
>>
>> <Defaults>
>>         UnexpectedRequests 50
>>         LogFile /tmp/pbstmp.1225/pvfs2.log
>>         EventLogging none
>>         LogStamp usec
>>         BMIModules bmi_tcp
>>         FlowModules flowproto_multiqueue
>>         PerfUpdateInterval 1000
>>         ServerJobBMITimeoutSecs 30
>>         ServerJobFlowTimeoutSecs 30
>>         ClientJobBMITimeoutSecs 300
>>         ClientJobFlowTimeoutSecs 300
>>         ClientRetryLimit 5
>>         ClientRetryDelayMilliSecs 2000
>> </Defaults>
>>
>> <Aliases>
>>         Alias ib14 tcp://ib14:3334
>> </Aliases>
>>
>> <Filesystem>
>>         Name pvfs2-fs
>>         ID 1990198648
>>         RootHandle 1048576
>>         <MetaHandleRanges>
>>                 Range ib14 4-4294967297
>>         </MetaHandleRanges>
>>         <DataHandleRanges>
>>                 Range ib14 4294967298-8589934591
>>         </DataHandleRanges>
>>         <StorageHints>
>>                 TroveSyncMeta no
>>                 TroveSyncData no
>>                 CoalescingHighWatermark infinity
>>                 CoalescingLowWatermark 1
>>         </StorageHints>
>> </Filesystem>
>>
>> I'm using dbench-3.03 from the robl io tests distribution, with
>> command line, from a different machine, single client:
>>
>>     ./dbench -D /pvfs -t 20 -c ./client.txt 10
>>
>> Everything finishes now, but all the threads complain.  They had
>> not previously done this in the past:
>>
>> /bin/rm: cannot remove directory `/pvfs/clients/client0': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client5': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client8': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client1': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client3': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client6': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client7': No such  
>> file or directory
>> /bin/rm: cannot remove directory `/pvfs/clients/client9': No such  
>> file or directory
>>
>> Hope this helps; at least it does not lock up my machines anymore.
>> I'm only picking on you since I saw some dbpf checkins that seem to
>> have been related (the -EIO issue).
>>
>
> I'm able to get something similar with dbench now after that  
> commit, so I'll look into that.  I'm not sure about the EIO thing,  
> it doesn't seem like we should return EIO if the get of a dspace  
> object fails, but I think that may be code left over from Neill's  
> first implementation, so he may have done it for some reason that  
> I've missed.
>

Just committed a (painfully simple) fix for this.  dbench seems to be  
working again.

-sam


> -sam
>
>
>> 		-- Pete
>>
>
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