If you are seeing a LUN go online-offline over and over in your DMP log and you are using NetApp for your back end storage it might be due to Veritas' idle LUN probing feature.
The idle LUN probing sub-module of VXFS feature is designed to allow volume manager to establish state information for
paths that are not current receiving any IO activity. However it does not work
with NetApp arrays; to turn this option off on a system with NetApp LUNs issue
the following command that is not system impacting. See the following URL
for details:
# vxdmpadm settune
dmp_probe_idle_lun=off
No comments:
Post a Comment