program

use moosefs

Master server installation

  • Installation

    groupadd mfs
useradd -g mfs mfs
cd /usr/src
tar -zxvf mfs-1.6.15.tar.gz
cd mfs-1.6.15
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var/lib 
--with-default-user=mfs --with-default-group=mfs --disable-mfschunkserver 
--disable-mfsmount
make
make install

  • Configuration

  1. Copy config

    cd /etc
cp mfsmaster.cfg.dist mfsmaster.cfg
cp mfsmetalogger.cfg.dist mfsmetalogger.cfg
cp mfsexports.cfg.dist mfsexports.cfg

# modify mfsexports.cfg 
# 192.168.2.0/24 / rw,alldirs,maproot=0

  2. Copy meta data file

    cd /var/lib/mfs
cp metadata.mfs.empty metadata.mfs

  3. Config host name

    echo 192.168.1.1 mfsmaster>> /etc/hosts

  • Run server

    /usr/sbin/mfsmaster start

# Run CGI monitor server, and view info under <http://192.168.1.1:9425>
/usr/sbin/mfscgiserv

Install Backup Server (metalogger)

Metalogger installation is very similar to that of the master server.
We issue the following commands:

groupadd mfs
useradd -g mfs mfs
cd /usr/src
tar -zxvf mfs-1.6.15.tar.gz
cd mfs-1.6.15
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var/lib 
--with-default-user=mfs --with-default-group=mfs --disable-mfschunkserver 
--disable-mfsmount
make
make install

cd /etc
cp mfsmetalogger.cfg.dist mfsmetalogger.cfg

Similarly, in /etc/hosts we add:

192.168.1.1 mfsmaster

Now we are ready to start the backup server process :

/usr/sbin/mfsmetalogger start

In a production environment you should set up automatic start of mfsmetalogger.

Chunk servers installation

We issue the following commands on the machines which are to be chunks servers:

groupadd mfs
useradd -g mfs mfs
cd /usr/src
tar -zxvf mfs-1.6.15.tar.gz
cd mfs-1.6.15
./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var/lib 
--with-default-user=mfs --with-default-group=mfs --disable-mfsmaster
make
make install

Now we similarly prepare configuration files of the chunk server:

cd /etc/
cp mfschunkserver.cfg.dist mfschunkserver.cfg
cp mfshdd.cfg.dist mfshdd.cfg

use /mnt/mfschunks1 and /mnt/mfschunks2 locations , so we add these two
lines to mfshdd.cfg file:

/mnt/mfschunks1
/mnt/mfschunks2

Create a .lock file to make user mfs has rights to write the mounted partitions.

chown -R mfs:mfs /mnt/mfschunks1
chown -R mfs:mfs /mnt/mfschunks2

Similarly we add the following line in /etc/hosts file:

192.168.1.1 mfsmaster

Now we are ready to start the chunk server:

/usr/sbin/mfschunkserver start

Users’ computers installation

Install FUSE

cd /usr/src
tar -zxvf fuse-2.8.3.tar.gz
cd fuse-2.8.3
./configure
make
make install

In order to install mfsmount package we do the following steps:

tar -zxvf mfs-1.6.15.tar.gz
cd mfs-1.6.15
./configure --prefix=/usr --sysconfdir=/etc
--localstatedir=/var/lib --with-default-user=mfs
--with-default-group=mfs --disable-mfsmaster
--disable-mfschunkserver
make
make install

In a /etc/hosts file we add this line:

192.168.1.1 mfsmaster

Let’s assume that we will mount the system in a /mnt/mfs folder on a client’s
machine. We issue the following commands:

mkdir -p /mnt/mfs
/usr/bin/mfsmount /mnt/mfs -H mfsmaster

Now after issuing the df -h | grep mfs command we should get information
similar to this:

/storage/mfschunks/mfschunks1
    2.0G 69M 1.9G 4% /mnt/mfschunks1
/storage/mfschunks/mfschunks2
    2.0G 69M 1.9G 4% /mnt/mfschunks2
mfs#mfsmaster:9421 3.2G 0 3.2G 0% /mnt/mfs

Installing MooseFS on one server

  • Install FUSE
  • Install Moosefs

Basic MooseFS Usage

The number of copies for the folder is set with the mfssetgoal –r command: 

mfssetgoal -r 1 /mnt/mfs/folder1
/mnt/mfs/folder1:
inodes with goal changed: 0
inodes with goal not changed: 1
inodes with permission denied: 0
mfssetgoal -r 2 /mnt/mfs/folder2
/mnt/mfs/folder2:
inodes with goal changed: 0
inodes with goal not changed: 1
inodes with permission denied: 0

The command mfscheckfile is used for checking in how many copies the given
file is stored.

Reference