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#
# Author:: Tim Smith <tsmith@limelight.com>
# Copyright:: Copyright (c) 2014 Limelight Networks, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require "spec_helper"
describe Ohai::System, "Linux Mdadm Plugin" do
before do
@md0 = <<~MD
/dev/md0:
Version : 1.2
Creation Time : Thu Jan 30 03:11:40 2014
Raid Level : raid10
Array Size : 2929893888 (2794.16 GiB 3000.21 GB)
Used Dev Size : 976631296 (931.39 GiB 1000.07 GB)
Raid Devices : 6
Total Devices : 6
Persistence : Superblock is persistent
Update Time : Tue May 6 23:30:32 2014
State : clean
Active Devices : 6
Working Devices : 6
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 256K
Name : host.therealtimsmith.com:3 (local to host host.therealtimsmith.com)
UUID : 5ed74d5b:70bfe21d:8cd57792:c1e13d65
Events : 155
Number Major Minor RaidDevice State
0 8 32 0 active sync /dev/sdc
1 8 48 1 active sync /dev/sdd
2 8 64 2 active sync /dev/sde
3 8 80 3 active sync /dev/sdf
4 8 96 4 active sync /dev/sdg
5 8 112 5 active sync /dev/sdh
MD
@plugin = get_plugin("linux/mdadm")
allow(@plugin).to receive(:collect_os).and_return(:linux)
@double_file = double("/proc/mdstat")
allow(@double_file).to receive(:each)
.and_yield("Personalities : [raid1] [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid10]")
.and_yield("md0 : active raid10 sdh[5] sdg[4] sdf[3] sde[2] sdd[1] sdc[0]")
.and_yield(" 2929893888 blocks super 1.2 256K chunks 2 near-copies [6/6] [UUUUUU]")
allow(File).to receive(:open).with("/proc/mdstat").and_return(@double_file)
allow(File).to receive(:exist?).with("/proc/mdstat").and_return(true)
allow(@plugin).to receive(:shell_out).with("mdadm --detail /dev/md0").and_return(mock_shell_out(0, @md0, ""))
end
describe "gathering Mdadm information via /proc/mdstat and mdadm" do
it "does not raise an error" do
expect { @plugin.run }.not_to raise_error
end
it "detects raid level" do
@plugin.run
expect(@plugin[:mdadm][:md0][:level]).to eq(10)
end
it "detects raid state" do
@plugin.run
expect(@plugin[:mdadm][:md0][:state]).to eq("clean")
end
it "detects raid size" do
@plugin.run
expect(@plugin[:mdadm][:md0][:size]).to eq(2794.16)
end
it "detects raid metadata level" do
@plugin.run
expect(@plugin[:mdadm][:md0][:version]).to eq(1.2)
end
device_counts = { raid: 6, total: 6, active: 6, working: 6, failed: 0, spare: 0 }
device_counts.each_pair do |item, expected_value|
it "detects device count of \"#{item}\"" do
@plugin.run
expect(@plugin[:mdadm][:md0][:device_counts][item]).to eq(expected_value)
end
end
it "detects member devices" do
@plugin.run
expect(@plugin[:mdadm][:md0][:members].sort).to eq(
%w{sdc sdd sde sdf sdg sdh}
)
end
it "detects member devices even if there are multi-digit numbers" do
new_mdstat = double("/proc/mdstat2")
allow(new_mdstat).to receive(:each)
.and_yield("Personalities : [raid1] [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid10]")
.and_yield("md0 : active raid10 sdj[2010] sdi[99] sdh[5] sdg[4] sdf[3] sde[2] sdd[1] sdc[0]")
.and_yield(" 2929893888 blocks super 1.2 256K chunks 2 near-copies [6/6] [UUUUUU]")
allow(File).to receive(:open).with("/proc/mdstat").and_return(new_mdstat)
@plugin.run
expect(@plugin[:mdadm][:md0][:members].sort).to eq(
%w{sdc sdd sde sdf sdg sdh sdi sdj}
)
end
it "detects member devices even if mdstat has extra entries" do
new_mdstat = double("/proc/mdstat2")
allow(new_mdstat).to receive(:each)
.and_yield("Personalities : [raid1] [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid10]")
.and_yield("md0 : active (somecraphere) <morestuff> raid10 sdh[5] sdg[4] sdf[3] sde[2] sdd[1] sdc[0]")
.and_yield(" 2929893888 blocks super 1.2 256K chunks 2 near-copies [6/6] [UUUUUU]")
allow(File).to receive(:open).with("/proc/mdstat").and_return(new_mdstat)
@plugin.run
expect(@plugin[:mdadm][:md0][:members].sort).to eq(
%w{sdc sdd sde sdf sdg sdh}
)
end
it "accuratelies report inactive arrays" do
new_mdstat = double("/proc/mdstat_inactive")
allow(new_mdstat).to receive(:each)
.and_yield("Personalities :")
.and_yield("md0 : inactive nvme2n1p3[2](S)")
allow(File).to receive(:open).with("/proc/mdstat").and_return(new_mdstat)
@plugin.run
expect(@plugin[:mdadm][:md0][:spares]).to eq(%w{nvme2n1p3})
end
it "reports journal devices" do
new_mdstat = double("/proc/mdstat_journal")
allow(new_mdstat).to receive(:each)
.and_yield("Personalies : [raid6]")
.and_yield("md0 : active (somecraphere) <morestuff raid6 sdbc1[7] sdd1[6] sde1[5] sdd1[4] sde1[3] sdf1[2] sdg1[1] nvme2n1p3[0](J)")
allow(File).to receive(:open).with("/proc/mdstat").and_return(new_mdstat)
@plugin.run
expect(@plugin[:mdadm][:md0][:journal]).to eq("nvme2n1p3")
end
it "reports spare devices" do
new_mdstat = double("/proc/mdstat_spare")
allow(new_mdstat).to receive(:each)
.and_yield("Personalies : [raid6]")
.and_yield("md0 : active (somecraphere) <morestuff raid6 sdbc1[7] sdd1[6] sde1[5] sdd1[4] sde1[3] sdf1[2] sdg1[1] sdh1[0](S)")
allow(File).to receive(:open).with("/proc/mdstat").and_return(new_mdstat)
@plugin.run
expect(@plugin[:mdadm][:md0][:spares]).to eq(%w{sdh1})
end
end
end
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