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fix(mdstat): parse (W), (J) and (R) component device flags #842

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fix(mdstat): parse (W), (J) and (R) component device flags #842

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2 changes: 1 addition & 1 deletion mdstat.go
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ var (
recoveryLinePctRE = regexp.MustCompile(`= (.+)%`)
recoveryLineFinishRE = regexp.MustCompile(`finish=(.+)min`)
recoveryLineSpeedRE = regexp.MustCompile(`speed=(.+)[A-Z]`)
componentDeviceRE = regexp.MustCompile(`(.*)\[(\d+)\](\([SF]+\))?`)
componentDeviceRE = regexp.MustCompile(`(.*)\[(\d+)\]((?:\([FJRSW]\))+)?`)
personalitiesPrefix = "Personalities : "
)

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28 changes: 28 additions & 0 deletions mdstat_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -369,3 +369,31 @@ md127 : active raid1 sdi2[0] sdj2[X]
}
}
}
func TestEvalComponentDevicesFlags(t *testing.T) {
// Flags as printed by the kernel, one per parenthesis group:
// https://github.com/torvalds/linux/blob/7ec462100ef9142344ddbf86f2c3008b97acddbe/drivers/md/md.c#L8376-L8392
devices, err := evalComponentDevices([]string{
"sda1[0](F)",
"sdb1[1](W)",
"sdc1[2](J)",
"sdd1[3](R)",
"sde1[4](W)(F)",
"sdg1[6](S)",
"sdf1[5]",
})
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
want := []MDStatComponent{
{Name: "sda1", DescriptorIndex: 0, Faulty: true},
{Name: "sdb1", DescriptorIndex: 1, WriteMostly: true},
{Name: "sdc1", DescriptorIndex: 2, Journal: true},
{Name: "sdd1", DescriptorIndex: 3, Replacement: true},
{Name: "sde1", DescriptorIndex: 4, WriteMostly: true, Faulty: true},
{Name: "sdg1", DescriptorIndex: 6, Spare: true},
{Name: "sdf1", DescriptorIndex: 5},
}
if diff := cmp.Diff(want, devices); diff != "" {
t.Errorf("unexpected component devices (-want +got):\n%s", diff)
}
}