When writing stream objects to MSEED, the network, station, location, channel code, each string can be up to 11 bytes long. With fields > 11 bytes raising an appropriate ValueError.

Then reading the same stream back in, these fields are then cut to the first 2, 5, 2, and 3 characters for the network, station, location, channel respectively. Whilst this point has been raised previously (#2588), should an appropriate warning should be logged to the user from obspy when they try to write metadata fields > required length?

As a bit of background, this is something we are encountering when attempting to write out probabilistic CFs as stream objects, with the label information encoded in the channel string see here.