AzureCerulean @ AzureCerulean @alien.top

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trapexit/mergerfs: a featureful union filesystem

mergerfs is a union filesystem geared towards simplifying storage and management of files across numerous commodity storage devices. It is similar to mhddfs, unionfs, and aufs.

FEATURES

• Configurable behaviors / file placement
• Ability to add or remove filesystems at will
• Resistance to individual filesystem failure
• Support for extended attributes (xattrs)
• Support for file attributes (chattr)
• Runtime configurable (via xattrs)
• Works with heterogeneous filesystem types
• Moving of file when filesystem runs out of space while writing
• Ignore read-only filesystems when creating files
• Turn read-only files into symlinks to underlying file
• Hard link copy-on-write / CoW
• Support for POSIX ACLs
• Misc other things

HOW IT WORKS mergerfs logically merges multiple paths together. Think a union of sets. The file/s or directory/s acted on or presented through mergerfs are based on the policy chosen for that particular action.

https://github.com/trapexit/mergerfs

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