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COMPARE_AND_WRITE: miscompare at offset 0

Hi,

we have since today this  messages on all nodes (simulare at same time)  in syslog  do we have to worry about it?

 

Feb 26 00:00:01 node04 kernel: [543377.915762] Process accounting resumed
Feb 26 12:56:32 node04 kernel: [589970.799647] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.108393] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.108546] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.116928] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.126038] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.207050] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.337000] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.409789] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.421773] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.422024] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.516504] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.524943] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.525053] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.545273] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.612857] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.720535] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.816221] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.828181] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:33 node04 kernel: [589971.952759] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.128513] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.128537] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.147724] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.147846] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.157317] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.229045] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.360137] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.432149] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.554727] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.640708] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.641001] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.737762] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.737869] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.772956] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.841197] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.843331] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589972.976323] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:34 node04 kernel: [589973.046378] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:35 node04 kernel: [589973.067993] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:35 node04 kernel: [589973.271791] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:35 node04 kernel: [589973.475188] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:35 node04 kernel: [589973.678902] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:36 node04 kernel: [589974.085471] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:36 node04 kernel: [589974.288782] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:36 node04 kernel: [589974.694427] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:36 node04 kernel: [589974.897682] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 12:56:37 node04 kernel: [589975.100255] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:44 node04 kernel: [592502.673592] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:44 node04 kernel: [592502.879037] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:44 node04 kernel: [592502.881498] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:44 node04 kernel: [592503.082584] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.162837] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.164397] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.285128] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.305323] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.509881] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.573480] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.703671] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592503.713293] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592504.000820] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592504.017413] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592504.115702] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:45 node04 kernel: [592504.134047] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.319824] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.352043] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.556395] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.630172] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.630267] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 13:38:46 node04 kernel: [592504.731833] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 14:45:12 node04 kernel: [596491.135320] MODE SENSE: unimplemented page/subpage: 0x1c/0x02
Feb 26 15:05:56 node04 kernel: [597734.944902] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:56 node04 kernel: [597735.147823] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:56 node04 kernel: [597735.350696] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:57 node04 kernel: [597735.757393] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:57 node04 kernel: [597735.964563] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:58 node04 kernel: [597736.393859] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 15:05:58 node04 kernel: [597736.605249] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:43 node04 kernel: [605042.408482] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605042.643105] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605042.993115] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605043.055654] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605043.055836] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605043.472569] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:44 node04 kernel: [605043.477016] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:45 node04 kernel: [605043.848318] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:45 node04 kernel: [605044.192284] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:45 node04 kernel: [605044.513739] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:45 node04 kernel: [605044.597941] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 17:07:45 node04 kernel: [605044.598019] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:49 node04 kernel: [615788.860227] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.063211] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.063818] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.300516] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.303087] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.503674] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.503755] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.504012] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.706957] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.711135] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.728375] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.929438] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:50 node04 kernel: [615789.930945] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.132240] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.134322] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.135345] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.135449] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.337143] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.539616] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.541447] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.740344] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.740674] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.762489] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:51 node04 kernel: [615790.965406] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:52 node04 kernel: [615791.183914] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:52 node04 kernel: [615791.493212] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:52 node04 kernel: [615791.898921] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:53 node04 kernel: [615792.331100] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:53 node04 kernel: [615792.331317] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:53 node04 kernel: [615792.738539] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:53 node04 kernel: [615792.943277] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:53 node04 kernel: [615792.950700] COMPARE_AND_WRITE: miscompare at offset 0
Feb 26 20:06:54 node04 kernel: [615793.361896] COMPARE_AND_WRITE: miscompare at offset 0

Should not worry about them.

The MODE SENSE: unimplemented page/subpage: 0x1c/0x02 is an optional function not implemented in Linux LIO target, it is mainly for reporting thin provision status, can be ignored.

The COMPARE_AND_WRITE is a locking mechanism used  by ESX hosts to co-ordinate concurrent access to the same disk, it is ok to get mis compares, it will prevent writing to a locked area.

thank´s a lot..... now i can sleep much better 😉