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diff --git a/topics/octopus/moosefs/moosefs-maintenance.gmi b/topics/octopus/moosefs/moosefs-maintenance.gmi new file mode 100644 index 0000000..1032cde --- /dev/null +++ b/topics/octopus/moosefs/moosefs-maintenance.gmi @@ -0,0 +1,252 @@ +# Moosefs + +We use moosefs as a network distributed storage system with redundancy. The setup is to use SSDs for fast access and spinning storage for redundancy/backups (in turn these are in RAID5 configuration). In addition we'll experiment with a non-redundant fast storage access using the fastest drives and network connections. + +# Configuration + +## Ports + +We should use different ports than lizard. Lizard uses 9419-24 by default. So let's use +9519- ports. + +* 9519 for moose meta logger +* 9520 for chunk server connections +* 9521 for mount connections +* 9522 for slow HDD chunks (HDD) +* 9523 for replicating SSD chunks (SSD) +* 9524 for fast non-redundant SSD chunks (FAST) + +## Topology + +Moosefs uses topology to decide where to fetch data. We can host the slow spinning HDD drives in a 'distant' location, so that data is fetched last. + +## Disks + +Some disks are slower than others. To test we can do: + +``` +root@octopus03:/export# dd if=/dev/zero of=test1.img bs=1G count=1 +1+0 records in +1+0 records out +1073741824 bytes (1.1 GB, 1.0 GiB) copied, 2.20529 s, 487 MB/s +/sbin/sysctl -w vm.drop_caches=3 +root@octopus03:/export# dd if=test1.img of=/dev/null bs=1G count=1 +1+0 records in +1+0 records out +1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.649035 s, 1.7 GB/s +rm test1.img +``` + +Above is on a RAID5 setup. Typical values are: + +``` + Write Read +Octopus Dell NVME 1.2 GB/s 2.0 GB/s +Octopus03 RAID5 487 MB/s 1.7 GB/s +Octopus01 RAID5 127 MB/s 163 MB/s +Samsung SSD 870 408 MB/s 565 MB/s +``` + +``` +mfs#octopus03:9521 3.7T 4.0G 3.7T 1% /moosefs-fast +``` + +## Command line + +``` +. /usr/local/guix-profiles/moosefs/etc/profile +mfscli -H octopus03 -P 9521 -SCS +``` + +## Config + +``` +root@octopus03:/etc/mfs# diff example/mfsexports.cfg.sample mfsexports.cfg +2c2,4 +< * / rw,alldirs,admin,maproot=0:0 +--- +> 172.23.21.0/24 / rw,alldirs,maproot=0,ignoregid +> 172.23.22.0/24 / rw,alldirs,maproot=0,ignoregid +> 172.23.17.0/24 / rw,alldirs,maproot=0,ignoregid +``` + +``` +root@octopus03:/etc/mfs# diff example/mfsmaster.cfg.sample mfsmaster.cfg +4a5,10 +> ## Only one metadata server in LizardFS shall have 'master' personality. +> PERSONALITY = master +> +> ## Password for administrative connections and commands. +> ADMIN_PASSWORD = nolizard +> +6c12 +< # WORKING_USER = nobody +--- +> WORKING_USER = mfs +9c15 +< # WORKING_GROUP = +--- +> WORKING_GROUP = mfs +27c33 +< # DATA_PATH = /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/var/mfs +--- +> DATA_PATH = /export/var/lib/mfs +34c40 +< # EXPORTS_FILENAME = /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/etc/mfs/mfsexports.cfg +--- +> EXPORTS_FILENAME = /etc/mfs/mfsexports.cfg +87c93 +< # MATOML_LISTEN_PORT = 9419 +--- +> MATOML_LISTEN_PORT = 9519 +103c109 +< # MATOCS_LISTEN_PORT = 9420 +--- +> MATOCS_LISTEN_PORT = 9520 +219c225 +< # MATOCL_LISTEN_PORT = 9421 +--- +> MATOCL_LISTEN_PORT = 9521 +``` + +``` +root@octopus03:/etc/mfs# cat mfsgoals.cfg +# safe - 2 copies, 1 on slow disk, 1 on fast disk +11 slow: HDD SSD + +# Fast storage - 1 copy on fast disks, no redundancy +12 fast: FAST +``` + +``` ++++ b/mfs/mfschunkserver-fast.cfg + # user to run daemon as (default is nobody) +-# WORKING_USER = nobody ++WORKING_USER = mfs + + # group to run daemon as (optional - if empty then default user group will be used) +-# WORKING_GROUP = ++WORKING_GROUP = mfs + + # name of process to place in syslog messages (default is mfschunkserver) + # SYSLOG_IDENT = mfschunkserver +@@ -28,6 +28,7 @@ + + # where to store daemon lock file (default is /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/var/mfs) + # DATA_PATH = /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/var/mfs ++DATA_PATH=/var/lib/mfs + + # when set to one chunkserver will not abort start even when incorrect entries are found in 'mfshdd.cfg' file + # ALLOW_STARTING_WITH_INVALID_DISKS = 0 +@@ -41,6 +42,7 @@ + + # alternate location/name of mfshdd.cfg file (default is /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/etc/mfs/mfshdd.cfg); this +file will be re-read on each process reload, regardless if the path was changed + # HDD_CONF_FILENAME = /gnu/store/yg0xb1g9mls04h4085kmfbbg8z36a7c2-moosefs-4.58.3/etc/mfs/mfshdd.cfg ++HDD_CONF_FILENAME = /etc/mfs/mfsdisk-fast.cfg + + # speed of background chunk tests in MB/s per disk (formally entry defined in mfshdd.cfg). Value can be given as a decimal number (default is +1.0) + # deprecates: HDD_TEST_FREQ (if HDD_TEST_SPEED is not defined, but there is redefined HDD_TEST_FREQ, then HDD_TEST_SPEED = 10 / HDD_TEST_FREQ) +@@ -109,10 +111,10 @@ + # BIND_HOST = * + + # MooseFS master host, IP is allowed only in single-master installations (default is mfsmaster) +-# MASTER_HOST = mfsmaster ++MASTER_HOST = octopus03 + + # MooseFS master command port (default is 9420) +-# MASTER_PORT = 9420 ++MASTER_PORT = 9520 + + # timeout in seconds for master connections. Value >0 forces given timeout, but when value is 0 then CS asks master for timeout (default is 0 +- ask master) + # MASTER_TIMEOUT = 0 +@@ -134,5 +136,5 @@ + # CSSERV_LISTEN_HOST = * + + # port to listen for client (mount) connections (default is 9422) +-# CSSERV_LISTEN_PORT = 9422 ++CSSERV_LISTEN_PORT = 9524 +``` + +``` ++++ b/mfs/mfsmount.cfg +mfsmaster=octopus03,nosuid,nodev,noatime,nosuid,mfscachemode=AUTO,mfstimeout=30,mfswritecachesize=2048,mfsreadaheadsize=2048,mfsport=9521 +/moosefs-fast +``` + +## systemd + + +``` +root@octopus03:/etc# cat systemd/system/moosefs-master.service +Description=MooseFS master server daemon +Documentation=man:mfsmaster +After=network.target +Wants=network-online.target + +[Service] +Type=forking +TimeoutSec=0 +ExecStart=/usr/local/guix-profiles/moosefs/sbin/mfsmaster -d start -c /etc/mfs/mfsmaster.cfg -x +ExecStop=/usr/local/guix-profiles/moosefs/sbin/mfsmaster -c /etc/mfs/mfsmaster.cfg stop +ExecStop=/usr/local/guix-profiles/moosefs/sbin/mfsmaster -c /etc/mfs/mfsmaster.cfg reload +ExecReload=/bin/kill -HUP $MAINPID +User=mfs +Group=mfs +Restart=on-failure +RestartSec=60 +OOMScoreAdjust=-999 + +[Install] +WantedBy=multi-user.target +``` + +``` + cat systemd/system/moosefs-mount.service +[Unit] +Description=Moosefs mounts +After=syslog.target network.target + +[Service] +Type=forking +TimeoutSec=600 +ExecStart=/usr/local/guix-profiles/moosefs/bin/mfsmount -c /etc/mfs/mfsmount.cfg +ExecStop=/usr/bin/umount /moosefs-fast + +[Install] +WantedBy=multi-user.target +root@octopus04:/etc# cat systemd/system/moosefs-chunkserver-fast.service +[Unit] +Description=MooseFS Chunkserver (Fast) +After=network.target + +[Service] +Type=simple +ExecStart=/usr/local/guix-profiles/moosefs/sbin/mfschunkserver -f -c /etc/mfs/mfschunkserver-fast.cfg +User=mfs +Group=mfs +Restart=on-failure +RestartSec=5 +LimitNOFILE=65535 + +[Install] +WantedBy=multi-user.target +``` + +``` +cat systemd/system/moosefs-mount.service +[Unit] +Description=Moosefs mounts +After=syslog.target network.target + +[Service] +Type=forking +TimeoutSec=600 +ExecStart=/usr/local/guix-profiles/moosefs/bin/mfsmount -c /etc/mfs/mfsmount.cfg +ExecStop=/usr/bin/umount /moosefs-fast + +[Install] +WantedBy=multi-user.target +``` |