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#!/usr/bin/ruby
#
# Program to create a snapshot and/or rotate a directory of backup snapshots
# using btrfs subvolume commands.
$LOAD_PATH.unshift("/usr/lib/byteback")
require 'trollop'
require 'byteback'
include Byteback
include Byteback::Log
opts = Trollop::options do
opt :root, "Backups directory (must be a btrfs subvolume)",
:type => :string
opt :snapshot, "(ignored for compatibility)"
opt :verbose, "Print diagnostics"
end
@root = opts[:root]
@verbose = opts[:verbose]
fatal("--root not readable") unless File.directory?("#{@root}")
@backups = BackupDirectory.new(@root)
snapshots = @backups.snapshots
if !snapshots.empty?
last_snapshot_time = snapshots.last.time
fatal("Last snapshot was less than six hours ago") unless
!last_snapshot_time ||
Time.now - last_snapshot_time >= 6*60*60 # FIXME: make configurable
end
info "Making new snapshot"
@backups.new_snapshot!
info "Finished"
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