From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Snitzer Subject: [RFC PATCH 3/3] block: improve detail in I/O error messages Date: Tue, 7 Dec 2010 18:16:42 -0500 Message-ID: <1291763802-8251-4-git-send-email-snitzer@redhat.com> References: <1291763802-8251-1-git-send-email-snitzer@redhat.com> Return-path: In-Reply-To: <1291763802-8251-1-git-send-email-snitzer@redhat.com> Sender: linux-ide-owner@vger.kernel.org To: Hannes Reinecke Cc: k-ueda@ct.jp.nec.com, michaelc@cs.wisc.edu, tytso@mit.edu, sshtylyov@mvista.com, linux-scsi@vger.kernel.org, jaxboe@fusionio.com, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, swhiteho@redhat.com, linux-raid@vger.kernel.org, linux-ide@vger.kernel.org, dm-devel@redhat.com, James.Bottomley@suse.de, konishi.ryusuke@lab.ntt.co.jp, j-nomura@ce.jp.nec.com, vst@vlnb.net, rwheeler@redhat.com, hch@lst.de, chris.mason@oracle.com, tj@kernel.org List-Id: linux-raid.ids Classify severity of I/O errors for target and transport errors. Signed-off-by: Mike Snitzer --- block/blk-core.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 4ce953f..ab8c776 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2028,9 +2028,15 @@ 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 = "I/O"; + + if (error == -ENOLINK) + error_type = "recoverable transport"; + else if (error == -EREMOTEIO) + error_type = "critical target"; + 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); -- 1.7.2.3