Support parse raid type for mdstat #505
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Signed-off-by: Singee <git@singee.me>
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This needs a DCO sign-off. You can use |
Signed-off-by: Singee <git@singee.me>
Signed-off-by: Singee <git@singee.me>
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@SuperQ Sorry that I forgot the sign-off in later commits😂. And now it's added. |
mdstat.go
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| @@ -165,6 +175,10 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) { | |||
| return mdStats, nil | |||
| } | |||
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| func isRaidType(mdType string) bool { | |||
| return strings.HasPrefix(mdType, "raid") || mdType == "linear" | |||
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No, I don't think this is going to work. Like I said, there are a whole bunch of other types other than raid.... Since this can change depending on the kernel/mdadm version. We can't support an exhaustive list here.
mdstat.go
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| @@ -95,6 +97,13 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) { | |||
| mdName := deviceFields[0] // mdx | |||
| state := deviceFields[2] // active or inactive | |||
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| mdType := "unknown" | |||
| if len(deviceFields) > 3 && isRaidType(deviceFields[3]) { | |||
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If you move this to after if len(lines) <= i+3 { you can reduce the word checking to just the check for (...).
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Actually, maybe this whole piece should be moved to the evalStatusLine() function.
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len(lines) <= i+3 is the guard for lines not the fields in first line, so the move won't be helpful
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@SuperQ There's a case that I cannot check If we only check parentheses, the type will be But maybe we can assume the type does not contain any special characters? |
Signed-off-by: Singee <git@singee.me>
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@SuperQ I changed the code for type checking. It passes all current tests, and I hope it can work forever. |
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@SuperQ I considered this before. But there is another case... We can ignore the type for this, but it's here anyway and it may be useful in some case. |
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Ahh, crap, yea, that's a problem. |
| // check if a string's format is like the mdType | ||
| // Rule 1: mdType should not be like (...) | ||
| // Rule 2: mdType should not be like sda[0] | ||
| func isRaidType(mdType string) bool { |
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Ewww hah..
There must be a better way. Is there an explicit way to query the md type? E.g by reasing another procfs file?
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@SuperQ @discordianfish Because of the lack of some knowledge, let's keep this open and see if anyone can help. |
For something like
We can also get the raid type from /proc/mdstat