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errors in syslog

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Can anyone explain the errors in the syslog I am seeing?

Now sdg looks to be an unused controller.

 

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:17:22 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:17:22 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:17:22 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:17:22 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:18:25 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:18:25 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:18:25 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:19:29 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:19:29 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:19:29 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:20:32 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:20:32 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:20:32 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:21:35 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:21:35 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:21:35 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: __ratelimit: 124 callbacks suppressed

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 0

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 1

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 2

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 3

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 4

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 5

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 6

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 7

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 8

Aug 12 22:22:38 Tower kernel: Buffer I/O error on device sdg, logical block 9

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 16777208

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:22:38 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:22:38 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:23:41 Tower kernel: sd 7:0:0:0: [sdg] Unhandled error code

Aug 12 22:23:41 Tower kernel: sd 7:0:0:0: [sdg] Result: hostbyte=0x04 driverbyte=0x00

Aug 12 22:23:41 Tower kernel: end_request: I/O error, dev sdg, sector 0

Aug 12 22:23:41 Tower kernel: __ratelimit: 124 callbacks suppressed

  • 2 weeks later...

These kinds of error sections in the syslog are usually not helpful, as they usually occur well after the real problem with the drive.  All I can tell here, is that the drive with ID of sdg is not responding, was probably disabled earlier.  Once a drive stops responding, there can be thousands of error lines associated with it, but the type of errors and the quantity of errors are no longer important.  What we need to see is the first indications of problems with sdg.  It would really be best if you could attach the entire syslog, zipped if necessary.

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