fssync - 1.7-1 main

fssync is a 1-way file-synchronization tool that tracks inodes and maintains a
local database of files that are on the remote side, making it able to:
- handle efficiently a huge number of dirs/files
- detect renames/moves and hard-links
.
It aims at minimizing network traffic and synchronizing every detail of a file
system:
- all types of inode: file, dir, block/character/fifo, socket, symlink
- preserve hard links
- modification time, ownership/permission/ACL, extended attributes
- sparse files
.
Other features:
- it can be configured to exclude files from synchronization
- fssync can be interrupted and resumed at any time, making it tolerant to
random failures (e.g. network error)
- algorithm to synchronize file content is designed to handle big files
like VM images efficiently, by updating fixed-size modified blocks in-place
.
Main usage of fssync is to prevent data loss in case of hardware failure,
where RAID1 is not possible (e.g. in laptops).
.
On Btrfs file systems, fssync is an useful alternative to `btrfs send` (and
`receive`) commands, thanks to filtering capabilities. This can be combined
with Btrfs snapshotting at destination side for a full backup solution.