Many VxVM vxio V-5-3-1285 messages may occur when ServiceGroup switch or failover on VMware environment

Many VxVM vxio V-5-3-1285 messages may occur when ServiceGroup switch or failover on VMware environment

Article: 100023571
Last Published: 2015-09-14
Ratings: 0 1
Product(s): InfoScale & Storage Foundation

Problem

On VMware environment, DMP has only one path by VMware limitation. DMP outputs this message when this path is disabled.

Error Message

VxVM vxio V-5-3-1285 voldmp_errbuf_sio_start: Failed to flush the error buffer *** on device *** to DMP

Cause

In this VMware scenario, dmpnodes are actually vmdk disks, there is only one path per dmpnode. When the disks are removed, triggering the udev event,
DMP disables the only path of these dmpnodes. After that, DMP will do the I/O error analysis by calling dmp_flush_errbuf() which in turn calls dmp_process_errbuf().
In dmp_process_errbuf() we return error if the number of active paths of dmpnode is zero. Hence we see this warning messages.

Solution

This is current Vxdmp design and SFHA limitation on VMware environment. Please ignore this vxio messages when ServiceGroup switch or failover.
It won’t cause any IO losing.
 

 

Applies To

 

 

VCS on VMware environment
VMDK disk setting

 

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