available options for log level is not correct.

[qiaoxinke]

File: /release-6.5/tiflash/tiflash-configuration.md

for the following settings of tiflash.toml. the available options is not correct. such as if I config the level to 「information」, it reported a error. the correct value should be "info" with double quotation.

[logger]
## log level (available options: trace, debug, information, warning, error). The default value is debug.
level = debug

[Oreoxmt]

@hongyunyan Could you please help confirm the value options of logger.level?

It seems that log_level can accept both "info" and "information" as an input and the normalize() function will convert "info" to "information" internally.

https://github.com/pingcap/tiflash/blob/5e205105f52048934d18ccace1b70a86a0ed08a5/libs/libdaemon/src/BaseDaemon.cpp#L762

https://github.com/pingcap/tiflash/blob/5e205105f52048934d18ccace1b70a86a0ed08a5/libs/libdaemon/src/BaseDaemon.cpp#L681-L693

auto log_level = normalize(config.getString("logger.level", "debug"));
...
static std::string normalize(const std::string & log_level)
{
    std::string norm = Poco::toLower(log_level);
    // normalize
    // info -> information
    // warn -> warning
    if (norm == "info")
        return "information";
    else if (norm == "warn")
        return "warning";
    else
        return norm;
}