logging: Add subsystem to log API (#19002)

Create new code paths for multiple subsystems in the code. This will
make maintaing this easier later.

Also introduce bugLogIf() for errors that should not happen in the first
place.

cmd/xl-storage-meta-inline.go

@@ -21,7 +21,6 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/minio/minio/internal/logger"
 	"github.com/tinylib/msgp/msgp"
 )
 
@@ -390,13 +389,13 @@ func xlMetaV2TrimData(buf []byte) []byte {
 	// Skip header
 	_, metaBuf, err = msgp.ReadBytesZC(metaBuf)
 	if err != nil {
-		logger.LogIf(GlobalContext, err)
+		storageLogIf(GlobalContext, err)
 		return buf
 	}
 	// Skip CRC
 	if maj > 1 || min >= 2 {
 		_, metaBuf, err = msgp.ReadUint32Bytes(metaBuf)
-		logger.LogIf(GlobalContext, err)
+		storageLogIf(GlobalContext, err)
 	}
 	//   =  input - current pos
 	ends := len(buf) - len(metaBuf)