From 79775567e0439ca47eb9f501e52c4b713d44cf89 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 18 Jan 2011 10:13:13 +0100 Subject: [SCSI] block: improve detail in I/O error messages Classify severity of I/O errors for target, nexus, and transport errors. Signed-off-by: Mike Snitzer Signed-off-by: Hannes Reinecke Acked-by: Jens Axboe Signed-off-by: James Bottomley --- block/blk-core.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'block') diff --git a/block/blk-core.c b/block/blk-core.c index 2f4002f79a24..b3cf121f1de9 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -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); -- cgit v1.2.3