linux/drivers/scsi/libsas
Dan Williams 3af74a3c07 [SCSI] libsas: introduce scmd_dbg() to quiet false positive "timeout" messages
libsas sometimes short circuits timeouts to force commands into error
recovery.  It is misleading to log that the command timed-out in
sas_scsi_timed_out() when in fact it was just queued for error handling.
It's also redundant in the case of a true timeout as libata eh will
detect and report timeouts via it's AC_ERR_TIMEOUT facility.

Given that some environments consider "timeout" errors to be indicative
of impending device failure demote the sas_scsi_timed_out() timeout
message to be disabled by default.  This parallels ata_scsi_timed_out().

[jejb: checkpatch fix]
Reported-by: Xun Ni <xun.ni@intel.com>
Tested-by: Nelson Cheng <nelson.cheng@intel.com>
Acked-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-03-15 10:18:53 -07:00
..
Kconfig [SCSI] libsas: convert to standard kernel debugging 2011-01-24 12:05:38 -06:00
Makefile Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-03-20 18:14:55 -07:00
sas_ata.c [SCSI] libsas: fix usage of ata_tf_to_fis 2013-11-27 11:01:07 +04:00
sas_discover.c [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type 2013-05-10 07:47:52 -07:00
sas_dump.c [SCSI] libsas: suspend / resume support 2012-08-24 13:10:23 +04:00
sas_dump.h [SCSI] libsas: convert to standard kernel debugging 2011-01-24 12:05:38 -06:00
sas_event.c [SCSI] libsas: suspend / resume support 2012-08-24 13:10:23 +04:00
sas_expander.c block: Kill bio_segments()/bi_vcnt usage 2013-11-23 22:33:51 -08:00
sas_host_smp.c SCSI updates on 20120319 2012-03-22 12:55:29 -07:00
sas_init.c [SCSI] libsas: suspend / resume support 2012-08-24 13:10:23 +04:00
sas_internal.h [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type 2013-05-10 07:47:52 -07:00
sas_phy.c [SCSI] libsas: suspend / resume support 2012-08-24 13:10:23 +04:00
sas_port.c [SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type 2013-05-10 07:47:52 -07:00
sas_scsi_host.c [SCSI] libsas: introduce scmd_dbg() to quiet false positive "timeout" messages 2014-03-15 10:18:53 -07:00
sas_task.c scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:31:23 -04:00