Which version of veritas? Version 4/2MP2 and version 5.x introduced a
feature called DMP fast recovery. It was probably supposed to be
called DMP fast fail but recovery sounds better. It is supposed to
fail suspect paths more aggressively to speed up failover. But when
you only have one vxvm DMP
Sebastien,
I found the following in my notes:
Ø See http://seer.entsupport.symantec.com/docs/288497.htm and
http://support.veritas.com/docs/276602
Ø If MPxIO is enabled on a host, the Veritas DMP tunable “dmp_fast_recovery”
must be set to off, after SF is installed.
vxdmpadm gettune
Thank you Victor and William, it seems to be a very good lead.
Unfortunately, this tunable seems not to be supported in the VxVM
version installed on my system :
vxdmpadm gettune dmp_fast_recovery
VxVM vxdmpadm ERROR V-5-1-12015 Incorrect tunable
vxdmpadm gettune [tunable name]
Note -
dmp_fast_recovery is a mechanism by which we bypass the sd/scsi stack and send
path inquiry/status CDBs directly from the HBA in order to bypass long SCSI
queues and recover paths faster. With a TPD (third-party driver) such as MPxIO,
bypassing the stack means we bypass the TPD completely, and
