[MooseFS-Users] Best way to restart mfsmaster

[Jay L. <jl...@sl...>]

Hi,

Every now and then, I need to restart the mfsmaster service for reasons
such as upgrading MooseFS or perhaps a reboot on the MFS node stemming from
a kernel upgrade.  My system only has one mfsmaster instance and so failing
over is not an option.  This is in a home environment and so the traffic on
my MooseFS instance is low; however, I want to be sure that I restart
MooseFS in the safest way.  I have tried the following:

1. Stop all chunskservers (cgiservers and metaloggers) and then the
master.  Start the master service and then start all the slaves.  (I have
automated this with Ansible, but it is still a bit bothersome.)

2. Just bounce the mfsmaster processes (mfsmaster, mfscgi
and mfschunkerser) and leaving all chunkservers up. This worked, but I
worry that doing so could cause corruption issues.  (It did not seem to
when I tried it.)

Anyway, I am trying to get the perspectives of the experts here and
understand how you folks handle this.

TIA

JL