Changes in multipath fibre channel config. Prox 4 -> 5

[deangreen4]

Hi,
we have several clusters and use a HPE 3PAR SAN.
On versions below 5 the paths are setup without issue when I run rescan-scsi-bus etc but on version 5 this doesnt work and the 3PAR virtual volumes can be seen but wont be mounted via mapper.

Two questions,
1 - Did anything change in the way these multipath disks are configured in the change from prox 4 to 5
2 - Is there a way for me to get the running config of multipathd on a prox 4 server and translate this to multipathd.conf on the prox 5 server?

Thanks

 

[aasami]

Hi,
we have several clusters and use a HPE 3PAR SAN.

I have the same question. Have you found an answer?

 

[deangreen4]

Hi,
i made a multipath config file in the end and that seems to work nicely. I couldnt get it to pick it up automagically like the previous versions.
If you are using a 3PAR, Il happily share the conf file

 

[deangreen4]

defaults {

polling_interval 2

path_selector "round-robin 0"

path_grouping_policy multibus

uid_attribute ID_SERIAL

rr_min_io 100

failback immediate

no_path_retry queue

user_friendly_names yes

}


devices {

device {

vendor "3PARdata"

product "VV"

path_grouping_policy "multibus"

path_checker "directio"

features "0"

hardware_handler "0"

prio "const"

rr_weight "uniform"

}

}