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There are many ways to access Distributed File System. For us the most favorite way is through native clients – does not matter whether it is Linux, Mac or Windows. But what when you cannot install third party software on your client? Or you need storage for systems that there is no client for? NFS […]
CHUNKSERVER AS A SERVICE 1. Prepare another mfschunkserver.cfg file for the new chunkserver in a different path, let’s call it /etc/chunkserver2.cfg 2. Prepare another mfshdd.cfg file for the new chunkserver in a different path, let’s call it /etc/hdd2.cfg 3. Set HDD_CONF_FILENAME in chunkserver2.cfg file to the path of newly prepared mfshdd.cfg file, in this example […]
You can install LizardFS Storage on any Linux machine. Currently, you can download LizardFS on Debian, Ubuntu, and Fedora directly from your distribution’s official package repository. You can also use MacOS or Windows machines as clients to access files stored on the LizardFS cluster. […]
If you want to have access to files stored on the LizardFS cluster from a Windows machine, you will need to install our Windows client. It is currently on the proprietary license, we do however offer an unlimited number of licenses with every level of our Technical Support. If you are interested in the Windows […]
The simplest way is to create a new metadata file. Go to your metadata directory on your current master server (look at the DATA_PATH in the mfsmaster.cfg file), then stop the master and create a new empty metadata file by executing: echo -n “MFSM NEW” > metadata.mfs Start the master and your cluster will be […]
Copy your data directory somewhere safe (default path: /var/lib/mfs). Files you should be interested in keeping are primarily: • metadata.mfs – your metadata set in binary form. This file is updated hourly + on master server shutdown. You can also trigger a metadata dump with lizardfs-admin save-metadata HOST PORT, but an admin password needs to […]
This depends largely on your policies. Since LizardFS does round robin between chunkservers if using goals, rr would probably gain the best results. If you use erasure coding, advanced balancing in LACP would be probably the most optimal way to do it. […]
With the help of multiple chunkservers and good goals, files can be stored multiple times. Therefore, a certain level of high availability on a file-level can be achieved easily. In addition, it is important to know that per default, the master service only can be active in a master role on one node at the […]
There are multiple ways of keeping the master highly available. One would be to demote and promote manually if you need to. The better way would be to delegate that task to a mechanism that knows the current state of all (possible) master nodes and can perform the failover procedure automatically. Known methods, when only […]
