Yi Zou 37d7b34f05 block: rate-limit the error message from failing commands ...

When performing a cable pull test w/ active stress I/O using fio over
a dual port Intel 82599 FCoE CNA, w/ 256LUNs on one port and about 32LUNs
on the other, it is observed that the system becomes not usable due to
scsi-ml being busy printing the error messages for all the failing commands.
I don't believe this problem is specific to FCoE and these commands are
anyway failing due to link being down (DID_NO_CONNECT), just rate-limit
the messages here to solve this issue.

v2->v1: use __ratelimit() as Tomas Henzl mentioned as the proper way for
rate-limit per function. However, in this case, the failed i/o gets to
blk_end_request_err() and then blk_update_request(), which also has to
be rate-limited, as added in the v2 of this patch.

v3-v2: resolved conflict to apply on current 3.6-rc3 upstream tip.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Cc: www.Open-FCoE.org <devel@open-fcoe.org>
Cc: Tomas Henzl <thenzl@redhat.com>
Cc: <linux-scsi@vger.kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2012-08-30 16:26:25 -07:00

..

partitions

s390/dasd: re-prioritize partition detection message

2012-05-16 14:42:51 +02:00

blk-cgroup.c

blkcg: implement per-blkg request allocation

2012-06-26 18:42:49 -04:00

blk-cgroup.h

blkcg: implement per-blkg request allocation

2012-06-26 18:42:49 -04:00

blk-core.c

block: rate-limit the error message from failing commands

2012-08-30 16:26:25 -07:00

blk-exec.c

[SCSI] block: Fix blk_execute_rq_nowait() dead queue handling

2012-07-20 08:58:39 +01:00

blk-flush.c

blk-flush: move the queue kick into

2011-10-24 16:24:31 +02:00

blk-integrity.c

block: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros

2011-10-31 19:31:12 -04:00

blk-ioc.c

block: uninitialized ioc->nr_tasks triggers WARN_ON

2012-08-01 12:17:27 +02:00

blk-iopoll.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

blk-lib.c

block: split discard into aligned requests

2012-08-02 09:48:50 +02:00

blk-map.c

block: re-use existing 'reading' variable instead of checking direction again

2011-12-21 15:27:24 +01:00

blk-merge.c

block: Add blk_bio_map_sg() helper

2012-08-02 23:42:04 +02:00

blk-settings.c

block: do not artificially constrain max_sectors for stacking drivers

2012-08-01 10:44:28 +02:00

blk-softirq.c

sched, block: Unify cache detection

2012-01-27 13:28:48 +01:00

blk-sysfs.c

blkcg: implement per-blkg request allocation

2012-06-26 18:42:49 -04:00

blk-tag.c

block: fix blk_queue_end_tag()

2011-12-29 09:16:28 +01:00

blk-throttle.c

block: allocate io_context upfront

2012-06-25 11:53:50 +02:00

blk-timeout.c

block: Drop dead function blk_abort_queue()

2012-06-15 08:46:23 +02:00

blk.h

block: remove dead func declaration

2012-08-01 12:25:54 +02:00

bsg-lib.c

block: drop custom queue draining used by scsi_transport_{iscsi|fc}

2012-06-25 11:53:48 +02:00

bsg.c

bsg: fix sysfs link remove warning

2012-02-08 20:02:03 +01:00

cfq-iosched.c

block: blkcg_policy_cfq shouldn't be used if !CONFIG_CFQ_GROUP_IOSCHED

2012-06-04 10:02:29 +02:00

compat_ioctl.c

block: Add BLKROTATIONAL ioctl

2012-01-11 16:29:31 +01:00

deadline-iosched.c

elevator: make elevator_init_fn() return 0/-errno

2012-03-06 21:27:21 +01:00

elevator.c

blkcg: implement per-queue policy activation

2012-04-20 10:06:06 +02:00

genhd.c

block: Don't use static to define "void *p" in show_partition_start()

2012-08-03 10:42:00 +02:00

ioctl.c

block: add partition resize function to blkpg ioctl

2012-08-01 12:24:18 +02:00

Kconfig

move fs/partitions to block/

2012-01-03 22:54:06 -05:00

Kconfig.iosched

blkcg: make CONFIG_BLK_CGROUP bool

2012-03-06 21:27:21 +01:00

Makefile

separate partition format handling from generic code

2012-01-03 22:54:06 -05:00

noop-iosched.c

elevator: make elevator_init_fn() return 0/-errno

2012-03-06 21:27:21 +01:00

partition-generic.c

block: add partition resize function to blkpg ioctl

2012-08-01 12:24:18 +02:00

scsi_ioctl.c

scsi: Silence unnecessary warnings about ioctl to partition

2012-06-15 12:52:46 +02:00