[SCSI] block: improve detail in I/O error messages
[linux-2.6.git] / block / blk-core.c
index 2f4002f..b3cf121 100644 (file)
@@ -2044,9 +2044,26 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes)
 
        if (error && req->cmd_type == REQ_TYPE_FS &&
            !(req->cmd_flags & REQ_QUIET)) {
-               printk(KERN_ERR "end_request: I/O error, dev %s, sector %llu\n",
-                               req->rq_disk ? req->rq_disk->disk_name : "?",
-                               (unsigned long long)blk_rq_pos(req));
+               char *error_type;
+
+               switch (error) {
+               case -ENOLINK:
+                       error_type = "recoverable transport";
+                       break;
+               case -EREMOTEIO:
+                       error_type = "critical target";
+                       break;
+               case -EBADE:
+                       error_type = "critical nexus";
+                       break;
+               case -EIO:
+               default:
+                       error_type = "I/O";
+                       break;
+               }
+               printk(KERN_ERR "end_request: %s error, dev %s, sector %llu\n",
+                      error_type, req->rq_disk ? req->rq_disk->disk_name : "?",
+                      (unsigned long long)blk_rq_pos(req));
        }
 
        blk_account_io_completion(req, nr_bytes);