When using DataCore “Virtual Disk”products recently, i got a problem. Dm device
could not be created
in path_discover as get_prio() was not able to get priority in alua prio mode.
The default_hw is below:
{
.vendor = "DataCore",
.product = "Virtual Disk",
.features = DEFAULT_FEATURES,
.hwhandler = DEFAULT_HWHANDLER,
.pgpolicy = GROUP_BY_PRIO,
.pgfailback = -FAILBACK_IMMEDIATE,
.rr_weight = RR_WEIGHT_NONE,
.checker_name = TUR,
.prio_name = PRIO_ALUA,
.prio_args = NULL,
}
But if a new path is added when the dm device was already created, it will be
added to the dm device
successfully just because ev_add_path() will not care the path prio while
coalesce_paths() will check
the path priority and set the mpp action to ACT_REJECT. Is there any solution
to solve this problem？
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