Multi-mfs Enablement

For DB workloads on high-end servers, MapR has made several performance enhancements. For MapR-DB deployments on clusters with SSDs, two fileserver instances are configured on nodes with at least two SPs.
On servers with SSDs, this feature is automatically enabled with a fresh install or upgrade.

List of SP's

[root@VM202 ~]# /opt/mapr/server/mrconfig  sp list
ListSPs resp: status 0:2
No. of SPs (2), totalsize 47539 MB, totalfree 46644 MB

SP 0: name SP1, Online, size 24179 MB, free 23686 MB, path /dev/sdb
SP 1: name SP2, Online, size 23360 MB, free 22958 MB, path /dev/sdd

Currently Running mfs instances

[root@VM202 ~]# /opt/mapr/server/mrconfig  info instances
1
5660

For now, I have 2 SP's ,for each SP, I am enabling 1 mfs instance. So for 1 SP , one dedicated mfs process(5660) and for  another SP, another dedicated mfs process (5661) will be assigning.

Here are the way to enable multi-mfs.
[root@VM202 ~]#   maprcli config save -values {multimfs.numinstances.pernode:2}
[root@VM202 ~]#   maprcli config save -values {multimfs.numsps.perinstance:1}

Restart the warden after  changing process.
[root@VM202 ~]# service mapr-warden restart

After Resatrt the warden , check the mfs instances.
[root@VM202 ~]# /opt/mapr/server/mrconfig  info instances
2
5660 5661
here we are able to see 2 mfs processes are running with id's 5660,5661

And in logs directory , we can see two logs generated for each one.
[root@VM202 ~]# ll /opt/mapr/logs/
mfs.log-0
mfs.log.1-0

mfs.log-1
mfs.log.1-1

mfs.log.1-2
mfs.log-2

mfs.log-3
mfs.log.1-3

mfs.log-4
mfs.log.1-4