On Mon, 2007-10-29 at 13:00 +0530, gurudas pai wrote: > Hi, > > While running olt kit on 2.6.24-rc1 over nfs , Oracle reported I/O > errors. I debugged little more and found that readv/writev are failing > with O_DIRECT on nfs ( netapp's filer). > > I am able to re-produce same error using ltp/diotest5. > > ./diotest5 -f /storage/nas/testfile -v 5 > > diotest05 1953719669 FAIL : readv failed: Invalid argument > diotest05 1953719670 FAIL : Read with Direct IO, Write without > diotest05 1953719671 FAIL : writev failed: Invalid argument > diotest05 1953719672 FAIL : Write with Direct IO, Read without > diotest05 1953719673 FAIL : writev failed: Invalid argument > diotest05 1953719674 FAIL : Read, Write with Direct IO > diotest05 0 INFO : 3/3 testblocks failed > > >strace -e readv,writev ./diotest5 -f /storage/nas/testfile -v 5 > writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}], 5) = 20480 > readv(4, 0x8051000, 5) = -1 EINVAL (Invalid argument) > diotest05 1953719669 FAIL : readv failed: Invalid argument > diotest05 1953719670 FAIL : Read with Direct IO, Write without > writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}], 5) = -1 EINVAL(Invalid argument) > diotest05 1953719671 FAIL : writev failed: Invalid argument > diotest05 1953719672 FAIL : Write with Direct IO, Read without > writev(3, [{"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}, {"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., > 4096}], 5) = -1 EINVAL(Invalid argument) > diotest05 1953719673 FAIL : writev failed: Invalid argument > diotest05 1953719674 FAIL : Read, Write with Direct IO > diotest05 0 INFO : 3/3 testblocks failed > Process 4749 detached > > > mount options: > rw,bg,nointr,hard,timeo=600,wsize=32768,rsize=32768,nfsvers=3,tcp,actimeo=0 > > > Please let me know if I have to try test/debug patch.
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