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// Copyright 2019 The Prometheus Authors
// 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.
package btrfs
import "testing"
type testVector struct {
uuid, label string
devices, features int
data, meta, system alloc
commitstats commit
}
type alloc struct {
layout string
size uint64
ratio float64
}
type commit struct {
commits uint64
lastCommitMs uint64
maxCommitMs uint64
totalCommitMs uint64
}
func TestFSBtrfsStats(t *testing.T) {
btrfs, err := NewFS("testdata/fixtures/sys")
if err != nil {
t.Fatalf("failed to access Btrfs filesystem: %v", err)
}
stats, err := btrfs.Stats()
if err != nil {
t.Fatalf("failed to parse Btrfs stats: %v", err)
}
tests := []testVector{
{
uuid: "0abb23a9-579b-43e6-ad30-227ef47fcb9d",
label: "fixture",
devices: 2,
features: 4,
data: alloc{"raid0", 2147483648, 1},
meta: alloc{"raid1", 1073741824, 2},
system: alloc{"raid1", 8388608, 2},
commitstats: commit{258051, 1000, 51462, 47836090},
},
{
uuid: "7f07c59f-6136-449c-ab87-e1cf2328731b",
label: "",
devices: 4,
features: 5,
data: alloc{"raid5", 644087808, 4. / 3.},
meta: alloc{"raid6", 429391872, 4. / 2.},
system: alloc{"raid6", 16777216, 4. / 2.},
commitstats: commit{0, 0, 0, 0},
},
}
if l := len(stats); l != len(tests) {
t.Fatalf("unexpected number of btrfs stats: %d", l)
}
for i, tt := range tests {
if want, got := tt.uuid, stats[i].UUID; want != got {
t.Errorf("fs %q unexpected stats name:\nwant: %q\nhave: %q", tt.uuid, want, got)
}
if want, got := tt.devices, len(stats[i].Devices); want != got {
t.Errorf("fs %q unexpected number of devices:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.features, len(stats[i].Features); want != got {
t.Errorf("fs %q unexpected number of features:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.data.size, stats[i].Allocation.Data.TotalBytes; want != got {
t.Errorf("fs %q unexpected data size:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.meta.size, stats[i].Allocation.Metadata.TotalBytes; want != got {
t.Errorf("fs %q unexpected metadata size:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.system.size, stats[i].Allocation.System.TotalBytes; want != got {
t.Errorf("fs %q unexpected system size:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.data.ratio, stats[i].Allocation.Data.Layouts[tt.data.layout].Ratio; want != got {
t.Errorf("fs %q unexpected data ratio:\nwant: %f\nhave: %f", tt.uuid, want, got)
}
if want, got := tt.meta.ratio, stats[i].Allocation.Metadata.Layouts[tt.meta.layout].Ratio; want != got {
t.Errorf("fs %q unexpected metadata ratio:\nwant: %f\nhave: %f", tt.uuid, want, got)
}
if want, got := tt.system.ratio, stats[i].Allocation.System.Layouts[tt.system.layout].Ratio; want != got {
t.Errorf("fs %q unexpected system ratio:\nwant: %f\nhave: %f", tt.uuid, want, got)
}
if want, got := tt.commitstats.commits, stats[i].CommitStats.Commits; want != got {
t.Errorf("fs %q unexpected commit stats commits:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.commitstats.lastCommitMs, stats[i].CommitStats.LastCommitMs; want != got {
t.Errorf("fs %q unexpected commit stats last_commit_ms:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.commitstats.maxCommitMs, stats[i].CommitStats.MaxCommitMs; want != got {
t.Errorf("fs %q unexpected commit stats max_commit_ms:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
if want, got := tt.commitstats.totalCommitMs, stats[i].CommitStats.TotalCommitMs; want != got {
t.Errorf("fs %q unexpected commit stats total_commit_ms:\nwant: %d\nhave: %d", tt.uuid, want, got)
}
}
}