IO failure is seen during controller giveback operations on Netapp Arrays in ALUA mode.
Article ID: 100015513
Updated On:
Description
Error Message
[Date]: I/O error occured on Path[Date]: I/O analysis done as DMP_PATH_BUSY on Path
[Date]: I/O analysis done as DMP_IOTIMEOUT on Path
Cause
During the asymmetric access state transition, DMP puts the buffer pointer in the delay queue based on the flags observed in the logs. This delay resulted in timeout and thereby filesystem went into disabled state.Solution
DMP code is modified to perform immediate retries instead of putting the buffer pointer in the delay queue for transition in progress case.HF's are avialable for the following releases. Please contact technical support to obtain the HF.
5.1SP1RP4HF14
6.0.5.008
6.1.1.003
Cause
During the asymmetric access state transition, DMP puts the buffer pointer in the delay queue based on the flags observed in the logs. This delay resulted in timeout and thereby filesystem went into disabled state.
Resolution
DMP code is modified to perform immediate retries instead of putting the buffer pointer in the delay queue for transition in progress case.
HF's are avialable for the following releases. Please contact technical support to obtain the HF.
5.1SP1RP4HF14
6.0.5.008
6.1.1.003
HF's are avialable for the following releases. Please contact technical support to obtain the HF.
5.1SP1RP4HF14
6.0.5.008
6.1.1.003
Issue/Introduction
While performing controller giveback operations on NetApp ALUA arrays, the
below messages are observed in /etc/vx/dmpevents.log
below messages are observed in /etc/vx/dmpevents.log
Additional Information
ETrack: 3774137
JIRA: null
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