thin-provisioning-tools/features/support/world_extensions.rb

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Before do
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@aruba_timeout_seconds = 120
end
module ThinpWorld
def tools_version
version = ''
File.open('VERSION', 'r') do |f|
version = f.readline
version.chomp!
end
version
end
def xml_file
'metadata.xml'
end
def dev_file
'metadata.bin'
end
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def dump_files
@dump_files ||= [xml_file]
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end
def new_dump_file
fn = "dump_#{dump_files.size}.xml"
@dump_files << fn
fn
end
def corrupt_block(n)
write_block(n, change_random_byte(read_block(n)))
end
# FIXME: we should really break out the xml stuff from
# thinp-test-suite and put in a gem in this repo.
def write_valid_xml(path)
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`thinp_xml create --nr-thins uniform[4..9] --nr-mappings uniform[1000.5000] > #{path}`
end
private
def read_block(n)
b = nil
File.open(dev_file, "r") do |f|
f.seek(n * 4096)
b = f.read(4096)
end
b
end
def write_block(n, b)
File.open(dev_file, "w") do |f|
f.seek(n * 4096)
f.write(b)
end
end
def change_random_byte(b)
i = rand(b.size)
puts "changing byte #{i}"
b.setbyte(i, (b.getbyte(i) + 1) % 256)
b
end
end
World(ThinpWorld)