| Message ID | 1628269970-87876-1-git-send-email-mikelley@microsoft.com |
|---|---|
| State | New |
| Headers | show |
| Series | [1/1] scsi: storvsc: Log TEST_UNIT_READY errors as warnings | expand |
On Fri, 6 Aug 2021 10:12:50 -0700, Michael Kelley wrote: > Commit 08f76547f08d ("scsi: storvsc: Update error logging") > added more robust logging of errors, particularly those reported > as Hyper-V errors. But this change produces extra logging noise > in that TEST_UNIT_READY may report errors during the normal > course of detecting device adds and removes. > > Fix this by logging TEST_UNIT_READY errors as warnings, so that > log lines are produced only if the storvsc log level is changed > to WARN level on the kernel boot line. > > [...] Applied to 5.14/scsi-fixes, thanks! [1/1] scsi: storvsc: Log TEST_UNIT_READY errors as warnings https://git.kernel.org/mkp/scsi/c/dbe7633c394b -- Martin K. Petersen Oracle Linux Engineering
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 328bb96..37506b3 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -1199,14 +1199,24 @@ static void storvsc_on_io_completion(struct storvsc_device *stor_device, vstor_packet->vm_srb.sense_info_length); if (vstor_packet->vm_srb.scsi_status != 0 || - vstor_packet->vm_srb.srb_status != SRB_STATUS_SUCCESS) - storvsc_log(device, STORVSC_LOGGING_ERROR, + vstor_packet->vm_srb.srb_status != SRB_STATUS_SUCCESS) { + + /* + * Log TEST_UNIT_READY errors only as warnings. Hyper-V can + * return errors when detecting devices using TEST_UNIT_READY, + * and logging these as errors produces unhelpful noise. + */ + int loglevel = (stor_pkt->vm_srb.cdb[0] == TEST_UNIT_READY) ? + STORVSC_LOGGING_WARN : STORVSC_LOGGING_ERROR; + + storvsc_log(device, loglevel, "tag#%d cmd 0x%x status: scsi 0x%x srb 0x%x hv 0x%x\n", request->cmd->request->tag, stor_pkt->vm_srb.cdb[0], vstor_packet->vm_srb.scsi_status, vstor_packet->vm_srb.srb_status, vstor_packet->status); + } if (vstor_packet->vm_srb.scsi_status == SAM_STAT_CHECK_CONDITION && (vstor_packet->vm_srb.srb_status & SRB_STATUS_AUTOSENSE_VALID))
Commit 08f76547f08d ("scsi: storvsc: Update error logging") added more robust logging of errors, particularly those reported as Hyper-V errors. But this change produces extra logging noise in that TEST_UNIT_READY may report errors during the normal course of detecting device adds and removes. Fix this by logging TEST_UNIT_READY errors as warnings, so that log lines are produced only if the storvsc log level is changed to WARN level on the kernel boot line. Fixes: 08f76547f08d ("scsi: storvsc: Update error logging") Signed-off-by: Michael Kelley <mikelley@microsoft.com> --- drivers/scsi/storvsc_drv.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)