Hi all, I'd like to propose the introduction of a new TS API, TSHttpTxnCacheDiskPathGet. The function signature is as follows:
tsapi TSReturnCode TSHttpTxnCacheDiskPathGet(TSHttpTxn txnp, const char **path); The intent of this API is to expose the underlying disk used to service a request, regardless of whether the request is a cache hit or miss. This is necessary because, as far as I know, there has historically been no way to easily obtain this information on a running system. This makes troubleshooting storage problems arduous because unless there's a major outlier, it's very difficult to determine which disk holds a particular object. In terms of the API itself, it relies on `const char **` to ensure the underlying path doesn't get modified and to avoid unnecessary copying since this is a read-only value. The API and all dependent changes can be seen in this PR: https://github.com/apache/trafficserver/pull/7783 These changes are being introduced to support an enhancement to the xdebug plugin that can be found here: https://github.com/apache/trafficserver/pull/7784 Feedback welcome! -- Thanks, Jeff
