In attempting to troubleshoot other issues, we've run into this race with 4.1.4 (both client and server) with a few cherry-picked patches from upstream. This is my attempt at a redacted packet-capture. These all affect the same fh/stateid: 116 -> OPEN (will be an upgrade / for write) 117 -> OPEN_DOWNGRADE (to read for the existing stateid / seqid = 0x6 121 -> OPEN_DOWNGRADE (completed last / seqid = 0x8) 122 -> OPEN (completed first / seqid = 0x7) Attempts to write using that stateid fail because the stateid doesn't have write access. Any thoughts? I can share more data from the capture if needed. ========== 116 Sep 3, 2015 15:07:04.163242000 EDT V4 Call SEQUENCE | PUTFH | OPEN DH: 0x8b975243/ | ACCESS FH: 0x8b975243, [Check: RD MD XT XE] | GETATTR FH: 0x8b975243 117 Sep 3, 2015 15:07:04.163289000 EDT V4 Call SEQUENCE | PUTFH | OPEN_DOWNGRADE | GETATTR FH: 0x8b975243 ... 121 Sep 3, 2015 15:07:04.163426000 EDT V4 Reply (Call In 117) SEQUENCE | PUTFH | OPEN_DOWNGRADE | GETATTR 122 Sep 3, 2015 15:07:04.163443000 EDT V4 Reply (Call In 116) SEQUENCE | PUTFH | OPEN StateID: 0x1f68 | ACCESS, [Allowed: RD MD XT XE] | GETATTR ... 155 Sep 3, 2015 15:07:04.165286000 EDT V4 Call SEQUENCE | TEST_STATEID 156 Sep 3, 2015 15:07:04.165417000 EDT V4 Reply (Call In 155) SEQUENCE | TEST_STATEID 157 Sep 3, 2015 15:07:04.165469000 EDT V4 Call SEQUENCE | PUTFH | WRITE StateID: 0x072b Offset: 0 Len: 289 | GETATTR FH: 0x8b975243 158 Sep 3, 2015 15:07:04.165597000 EDT V4 Reply (Call In 157) SEQUENCE | PUTFH | WRITE Status: NFS4ERR_OPENMODE 159 Sep 3, 2015 15:07:04.165713000 EDT V4 Call SEQUENCE | TEST_STATEID 160 Sep 3, 2015 15:07:04.165839000 EDT V4 Reply (Call In 159) SEQUENCE | TEST_STATEID 161 Sep 3, 2015 15:07:04.165913000 EDT V4 Call SEQUENCE | PUTFH | WRITE StateID: 0x072b Offset: 0 Len: 289 | GETATTR FH: 0x8b975243 162 Sep 3, 2015 15:07:04.166040000 EDT V4 Reply (Call In 161) SEQUENCE | PUTFH | WRITE Status: NFS4ERR_OPENMODE 163 Sep 3, 2015 15:07:04.166153000 EDT V4 Call SEQUENCE | TEST_STATEID 164 Sep 3, 2015 15:07:04.166284000 EDT V4 Reply (Call In 163) SEQUENCE | TEST_STATEID 165 Sep 3, 2015 15:07:04.166335000 EDT V4 Call SEQUENCE | PUTFH | WRITE StateID: 0x072b Offset: 0 Len: 289 | GETATTR FH: 0x8b975243 166 Sep 3, 2015 15:07:04.166463000 EDT V4 Reply (Call In 165) SEQUENCE | PUTFH | WRITE Status: NFS4ERR_OPENMODE Thanks, Andy -- Andrew W. Elble aweits@xxxxxxxxxxxxxxxxxx Infrastructure Engineer, Communications Technical Lead Rochester Institute of Technology PGP: BFAD 8461 4CCF DC95 DA2C B0EB 965B 082E 863E C912 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
