DISK OPERATION ERROR in AIX
Article Number: 520 | Rating: 5/5 from 1 votes | Last Updated: Thu, Feb 21, 2019 8:24 PM
Last month, we noted errpt showing an error:
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[root@aix:/] errpt -aIDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTIONDCB47997 1122091816 T H hdisk29 DISK OPERATION ERRORF31FFAC3 1122091816 I H hdisk29 PATH HAS RECOVEREDDE3B8540 1122091816 P H hdisk29 PATH HAS FAILEDDCB47997 1122075216 T H hdisk26 DISK OPERATION ERRORF31FFAC3 1122075216 I H hdisk26 PATH HAS RECOVEREDDE3B8540 1122075216 P H hdisk26 PATH HAS FAILEDDCB47997 1122070516 T H hdisk31 DISK OPERATION ERRORF31FFAC3 1122070516 I H hdisk31 PATH HAS RECOVEREDDE3B8540 1122070516 P H hdisk31 PATH HAS FAILED |
A way to find what’s causing this error is using ‘lsmpio’ command to display detailed device statistics for the hdisks devices.
NOTE: lsmpio command was introduce in AIX 7.1 TL3 and 6.1 TL9.
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[root@aix:/] lsmpio -Sdl hdisk29Disk: hdisk29 Path statistics since Fri Dec 09 12:56:32 CET 2016 Path 0: (fscsi0:500a09829af63ecf,7000000000000) Path Selections: 1282755 Adapter Errors: 0 Software: 0 Hardware: 0 Transport Dead: 0 Transport Busy: 0 Transport Fault: 0 No Device Response: 0 Target Port ID Changed: 0 Command Timeouts: 0 Reservation Conflicts: 0 SCSI Queue Full: 0 SCSI Busy: 0 SCSI ACA Active: 0 SCSI Task Aborted: 0 SCSI Aborted Command: 0 SCSI Check Condition: 0 Medium Error: 0 Hardware Error: 0 Not Ready: 0 Other: 0 Last Error: N/A Last Error Time: N/A Path Failure Count: 0 Due to Adapter Error: 0 Due to I/O Error: 0 Due to Health Check: 0 Due to SCSI Sense: 0 Due to Qualifier Bit: 0 Due to Opening Error: 0 Last Path Failure: N/A Last Path Failure Time: N/ADisk: hdisk29 Path statistics since Fri Dec 09 12:56:31 CET 2016 Path 1: (fscsi1:500a09828af63ecf,7000000000000) Path Selections: 1254441 Adapter Errors: 3 Software: 0 Hardware: 0 Transport Dead: 0 Transport Busy: 0 Transport Fault: 0 No Device Response: 0 Target Port ID Changed: 0 Command Timeouts: 3 Reservation Conflicts: 0 SCSI Queue Full: 0 SCSI Busy: 0 SCSI ACA Active: 0 SCSI Task Aborted: 0 SCSI Aborted Command: 0 SCSI Check Condition: 0 Medium Error: 0 Hardware Error: 0 Not Ready: 0 Other: 0 Last Error: SCSI Command Timeout Last Error Time: Mon Dec 12 09:12:08 CET 2016 Path Failure Count: 0 Due to Adapter Error: 0 Due to I/O Error: 0 Due to Health Check: 0 Due to SCSI Sense: 0 Due to Qualifier Bit: 0 Due to Opening Error: 0 Last Path Failure: N/A Last Path Failure Time: N/A |
As you can see in the output, the cause of the issue is “SCSI Command Timeout” on FC adapter.
Please, check FC network (VIOS, NPIV, SAN zonning).
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