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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
unless 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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