[MooseFS-Users] Minimum setup, local servers, remove VM as a master

[Nicolas E. <nb...@te...>]

Hi, I am testing Moosefs on FreeBSD 11 so far using only 2 instances one
behaving like master and chunkserver and other only as a chunkserver, so
far all pretty good but while testing I notice that if the master goes down
all the chunks become unresponsive, In my try to make a more redundant
setup I am thinking of using a tiny VM (1GB ram 20GB disk) only to keep the
master up and allow the 2 chunks to be operable, but I have some doubts.

If I understand properly the metadata is stored in the master and the
chunckservers just store the raw data, therefore the master doesn’t need to
be huge in storage as the chunservers , also when writing to data on one
chunk server, only the metadata is sent to the master and the raw data is
synced only between the chunks, and if I am understanding correctly the
more intense use of network/bandwidth is between chunks and not the master,
is this correct?  ( thinking on this to have a basic setup in where I could
have 2 in home servers in the same network, but only the master in a remote
tiny VM "always online" )

Now regarding the master, if it is down, I can’t access /read the files in
the chunkservers, is there a way to configure the chunkservers to work in
an online mode or being available to continue using what they have to until
the master comes back and then just re-sync.

regards.