"V-5-0-607 Reached DMP threshold I/O time-out" reported in the messages file

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Article ID: 100018710

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Resolution

When one of the fiber channel links went down, vxdmp did not failover the I/Os and started reporting vxio errors and vxfs errors in /var/log/messages file:
 
May 29 16:37:49 db01 kernel: lpfc0:0250:Die:EXPIRED nodev timer Data: x55009e x1x5
May 29 16:37:50 db01 kernel: SCSI disk error : host 0 channel 0 id 0 lun 76 return code= 10000
May 29 16:37:50 db01 kernel: I/O error: dev 08:76, sector 30964
May 29 16:37:50 db01 kernel: VxVM vxdmp V-5-0-607 Reached DMP threshold I/O time-out for dev 201/0xa6 SCSI
disk error :host 0 channel 0 id 0 lun 76 return code = 10000
May 29 16:37:50 db01 kernel: I/O error: dev 08:76, sector 3235328
May 29 16:37:50 db01 kernel: SCSI disk error : host 0 channel 0 id 0 lun 63 return code= 10000
 
The "kernel: VxVM vxdmp V-5-0-607 Reached DMP threshold I/O time-out for dev" message is reported by vxdmp when it hits DMP_MAX_FAILED_IO_THRESHOLD. This value is the time that vxdmp would wait for an i/o to complete after it is sent down to the scsi layer. 
 
 

 

Issue/Introduction

"V-5-0-607 Reached DMP threshold I/O time-out" reported in the messages file

Additional Information

ETrack: 542141