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NetBSD from version 6.0 supports its own re-implementation of Linux LVM. Re-implementation is based on a BSD licensed device-mapper driver and uses a port of Linux lvm tools as the userspace part of LVM. There is no need to support RAID5 in LVM because of NetBSD superior RAIDFrame subsystem. NetBSD: ZFS: Yes Yes Yes Yes Yes Yes Yes
The device mapper is a framework provided by the Linux kernel for mapping physical block devices onto higher-level virtual block devices.It forms the foundation of the logical volume manager (LVM), software RAIDs and dm-crypt disk encryption, and offers additional features such as file system snapshots.
The hope was due to Stratis configuration daemon being in userland, it would more quickly reach maturity versus the years of kernel level development of file systems ZFS and Btrfs. [ 2 ] [ 3 ] It is built upon enterprise-tested components LVM and XFS with over a decade of enterprise deployments and the lessons learned from System Storage ...
On most LVM setups, only one copy of the LVM head is saved to each PV, which can make the volumes more susceptible to failed disk sectors. This behavior can be overridden using vgconvert --pvmetadatacopies. If the LVM can not read a proper header using the first copy, it will check the end of the volume for a backup header.
zFS – z/OS File System; not to be confused with other file systems named zFS or ZFS. zFS - an IBM research project to develop a distributed, decentralized file system; not to be confused with other file systems named zFS or ZFS. ZFS – a combined file system and logical volume manager designed by Sun Microsystems
2005: ZFS source code was released as part of the OpenSolaris project. 2006: Development of a ZFS port to FUSE for Linux started. 2007: Apple began a project to port ZFS to Mac OS X. 2008: A port to FreeBSD was released as part of FreeBSD 7.0. 2008: Development of a native ZFS Linux port started, known as ZFS on Linux.
ZFS (previously Zettabyte File System) is a file system with volume management capabilities. It began as part of the Sun Microsystems Solaris operating system in 2001. Large parts of Solaris, including ZFS, were published under an open source license as OpenSolaris for around 5 years from 2005 before being placed under a closed source license when Oracle Corporation acquired Sun in 2009–2010.
However, the ZFS-Linux port of Lustre will be running ZFS's DMU (Data Management Unit) in userspace. [12] MinFS: MinFS is a fuse driver for Amazon S3 compatible object storage server. MinFS [13] lets you mount a remote bucket (from a S3 compatible object store), as if it were a local directory.