From: Hannes Reinecke <hare@suse.de>
To: James Bottomley <jbottomley@parallels.com>
Cc: Christoph Hellwig <hch@infradead.org>,
linux-scsi@vger.kernel.org, Robert Elliott <elliott@hp.com>,
Hannes Reinecke <hare@suse.de>
Subject: [PATCH 27/27] scsi: ratelimit I/O error messages
Date: Mon, 20 Oct 2014 08:52:30 +0200 [thread overview]
Message-ID: <1413787950-14659-28-git-send-email-hare@suse.de> (raw)
In-Reply-To: <1413787950-14659-1-git-send-email-hare@suse.de>
There can be quite a lot of I/O error messages, even on smaller
machines. So we need to ratelimit them to not overwhelm logging.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/scsi/scsi_lib.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2df485f..9d248d2 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -22,6 +22,7 @@
#include <linux/hardirq.h>
#include <linux/scatterlist.h>
#include <linux/blk-mq.h>
+#include <linux/ratelimit.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
@@ -1037,18 +1038,23 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
switch (action) {
case ACTION_FAIL:
/* Give up and fail the remainder of the request */
- if (unlikely(scsi_logging_level))
- level = SCSI_LOG_LEVEL(SCSI_LOG_MLQUEUE_SHIFT,
- SCSI_LOG_MLQUEUE_BITS);
- /*
- * if logging is enabled the failure will be printed
- * in scsi_log_completion(), so avoid duplicate messages
- */
- if (!level && !(req->cmd_flags & REQ_QUIET)) {
- scsi_print_result(cmd, NULL, FAILED);
- if (driver_byte(result) & DRIVER_SENSE)
- scsi_print_sense(cmd);
- scsi_print_command(cmd);
+ if (unlikely(scsi_logging_level)) {
+ static DEFINE_RATELIMIT_STATE(_rs,
+ DEFAULT_RATELIMIT_INTERVAL,
+ DEFAULT_RATELIMIT_BURST);
+ level = SCSI_LOG_LEVEL(SCSI_LOG_MLCOMPLETE_SHIFT,
+ SCSI_LOG_MLCOMPLETE_BITS);
+ /*
+ * if logging is enabled the failure will be printed
+ * in scsi_log_completion(), so avoid duplicate messages
+ */
+ if (__ratelimit(&_rs) && !level &&
+ !(req->cmd_flags & REQ_QUIET)) {
+ scsi_print_result(cmd, NULL, FAILED);
+ if (driver_byte(result) & DRIVER_SENSE)
+ scsi_print_sense(cmd);
+ scsi_print_command(cmd);
+ }
}
if (!scsi_end_request(req, error, blk_rq_err_bytes(req), 0))
return;
--
1.8.5.2
next prev parent reply other threads:[~2014-10-20 6:52 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-20 6:52 [PATCHv7 00/27] scsi logging update (the boring part) Hannes Reinecke
2014-10-20 6:52 ` [PATCH 01/27] Remove scsi_cmd_print_sense_hdr() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 02/27] sd: Remove scsi_print_sense() in sd_done() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 03/27] aha152x: Debug output update and whitespace cleanup Hannes Reinecke
2014-10-20 6:52 ` [PATCH 04/27] scsi: introduce sdev_prefix_printk() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 05/27] scsi: Use sdev as argument for sense code printing Hannes Reinecke
2014-10-20 6:52 ` [PATCH 06/27] acornscsi: use scsi_print_command() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 07/27] fas216: Return DID_ERROR for incomplete data transfer Hannes Reinecke
2014-10-20 6:52 ` [PATCH 08/27] fas216: Update logging messages Hannes Reinecke
2014-10-20 6:52 ` [PATCH 09/27] 53c700: remove scsi_print_sense() usage Hannes Reinecke
2014-10-20 6:52 ` [PATCH 10/27] scsi: stop decoding if scsi_normalize_sense() fails Hannes Reinecke
2014-10-20 6:52 ` [PATCH 11/27] scsi: do not decode sense extras Hannes Reinecke
2014-10-20 6:52 ` [PATCH 12/27] scsi: use 'bool' as return value for scsi_normalize_sense() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 13/27] scsi: remove scsi_print_status() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 14/27] Implement scsi_opcode_sa_name Hannes Reinecke
2014-10-20 6:52 ` [PATCH 15/27] scsi: merge print_opcode_name() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 16/27] scsi: consolidate opcode lookup in scsi_opcode_sa_name() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 17/27] scsi: repurpose the last argument from print_opcode_name() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 18/27] scsi: Remove scsi_print_command when calling abort Hannes Reinecke
2014-10-20 6:52 ` [PATCH 19/27] scsi: separate out scsi_(host|driver)byte_string() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 20/27] sd: Cleanup logging Hannes Reinecke
2014-10-20 6:52 ` [PATCH 21/27] scsi: simplify scsi_log_(send|completion) Hannes Reinecke
2014-10-20 6:52 ` [PATCH 22/27] scsi: fixup logging messages in scsi_error.c Hannes Reinecke
2014-10-20 6:52 ` [PATCH 23/27] scsi: use shost argument in scsi_eh_prt_fail_stats Hannes Reinecke
2014-10-20 6:52 ` [PATCH 24/27] scsi_error: document scsi_try_to_abort_cmd Hannes Reinecke
2014-10-20 6:52 ` [PATCH 25/27] scsi: check for correct return code in scsi_eh_abort_cmds() Hannes Reinecke
2014-10-20 6:52 ` [PATCH 26/27] scsi: correct return values for .eh_abort_handler implementations Hannes Reinecke
2014-10-20 6:52 ` Hannes Reinecke [this message]
2014-10-21 16:10 ` [PATCH 27/27] scsi: ratelimit I/O error messages Elliott, Robert (Server Storage)
2014-10-21 17:53 ` Elliott, Robert (Server Storage)
2014-10-21 10:55 ` [PATCHv7 00/27] scsi logging update (the boring part) Christoph Hellwig
2014-10-21 11:02 ` Hannes Reinecke
2014-10-21 11:04 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2014-10-24 12:26 [PATCHv8 " Hannes Reinecke
2014-10-24 12:27 ` [PATCH 27/27] scsi: ratelimit I/O error messages Hannes Reinecke
2014-10-24 21:00 ` Elliott, Robert (Server Storage)
2014-10-28 17:33 ` Christoph Hellwig
2014-10-28 17:44 ` Hannes Reinecke
2014-10-28 17:57 ` Christoph Hellwig
2014-10-28 18:36 ` Elliott, Robert (Server Storage)
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