diff options
| author | Hannes Reinecke <hare@suse.de> | 2011-01-18 10:13:13 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-02-12 10:33:37 -0600 |
| commit | 79775567e0439ca47eb9f501e52c4b713d44cf89 (patch) | |
| tree | 1cb890e0a061b007ae10bd281a60ada60a6d2bb1 /block | |
| parent | 751b2a7d623ead9e55f751a6087efeab454b5659 (diff) | |
| download | lwn-79775567e0439ca47eb9f501e52c4b713d44cf89.tar.gz lwn-79775567e0439ca47eb9f501e52c4b713d44cf89.zip | |
[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 <snitzer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 23 |
1 files changed, 20 insertions, 3 deletions
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); |