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In 1992 the Extended File System or ext was launched specifically for the Linux operating system. It manages the file name, file size, creation date, and much more information about a file. It controls how data is stored and retrieved.
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Linux file system is generally a built-in layer of a Linux operating system used to handle the data management of the storage. Like the rest of an operating system’s kernel, they’re largely invisible in everyday use. For example, the operating system itself, compilers, application programs, shared libraries, configuration files, log files, media mount points, and so on.įile systems operate in the background. How Does Copy-on-Write Work and Why Would You Want itĪlmost every bit of data and programming that is needed to boot a Linux system and keep it working is saved in the file system.Restart the Storage Daemon to apply the changes.
#File deduplication software linux install
You need to install the Algined Drivers package, available through ’s personal package repository (Bacula Binary Package Download, requires registration). Restart machine to make sure ddumbfs is always mounted at boot time. In this example a 999G volume is created, so change it to the desired size that fits your disk: mkddumbfs -B 128k -s 999G /mnt/ddumbfs.dataĭdumbfs $TARGET -o parent=/mnt/ddumbfs.mntĪdd a new line like this to /etc/fstab, to make ddumbfs persistent after boot: -oparent=/mnt/ddumbfs.data /mnt/ddumbfs.mnt fuse.ddumbfs defaults 0 0 Second one should be a mounting point where your Bacula Storage Volumes will be written, typically a large disk array. First one should be a SSD mounting point to host the ddumbfs index engine. Yum -y install fuse fuse-libs mhash fuse-devel mhash-devel pkgconfig gcc make automake b) Debian/Ubuntu Packages: sudo -iĪpt-get -y install fuse libfuse2 libmhash2 libfuse-dev libmhash-dev pkg-config build-essential autotools-dev 2.2 Building Ddumbfs from source wget -qO- | tar -xzvf -C /usr/srcĬreate two directories.
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Here are the corresponding package for RedHat and Debian based distributions (some of them need to be built from source): To compile ddumbfs you need as usual: make and gcc, the headers for fuse and mhash library and pkg-config. sudo zpool create -f zfs /dev/sdbĭdumbfs was chosen for this laboratory for being both open source and focused on faster operations thanks to its very simple index design, which is very important for shorter backup windows. In the example bellow, /zfs/mnt should be the configured nf path on ArchiveDevice directives. The ZFS initialization will require one or more physical disks. Modprobe zfs b) Debian/Ubuntu Install: sudo -iĪpt-get -y install zfsutils-linux Initializing the ZFS Gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux" > /etc//zfs.repo a) RedHat/CentOS Install ( ): yum install Here, we are deploying ZFS, and then Ddumbfs as an alternative. ZFS FileSystemĬurrently, there are several deduplication file systems nowadays, such as lessfs, opendedup, ZFS and others.Hardware with deduplication capabilities can also be used with Bacula new Aligned Format. More than ever, disk backups are becoming a feasible replacement for tape libraries, since deduplication is not a feature that can currently be efficiently deployed on the sequential magnetic tapes. It is becoming an essential backup system component because it reduces storage space requirements and also lso a critical one, since the performance of all the backup operation depends on storage throughput.Īccording to Figure 1, the new Aligned Format proves to be a good storage cost reducing new Bacula Community feature, and to be much more efficient than ZBackup (alternate tar dedup software) in terms of backup and restore speeds. There is a minor impact in backup and restore duration, but it is an acceptable trade-off.įigure1 – Old Community version without Aligned Volumes versus New Aligned format (AUTORSHIP OF THIS PICTURE IS FROM HEITOR FARIA).
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In this method or Bacula will create distinct volumes to contain the metadata of the files copied from the backup and another one to the data itself.ĭata deduplication is a dictionary based data reduction approach, due to its ability to effectively reduce backup storage or archiving datasets size by a factor of 4-40X.You will need a small SSD area to store the dedup index engine.Bacula software compression should not be enabled with Aligned format, resulting in poor dedup performance.This feature is available now for both Bacula Community (9.0.8 or greater) and Enterprise.