Hyper-V synthetic SCSI devices do not support the MAINTENANCE_IN SCSI
command, so scsi_report_opcode() always fails, resulting in messages
like this:
hv_storvsc <guid>: tag#205 cmd 0xa3 status: scsi 0x2 srb 0x86 hv 0xc0000001
The recently added support for command duration limits calls
scsi_report_opcode() four times as each device comes online, which
significantly increases the number of messages logged in a system with
many disks.
Fix the problem by always marking Hyper-V synthetic SCSI devices as
not supporting scsi_report_opcode(). With this setting, the
MAINTENANCE_IN SCSI command is not issued and no messages are logged.
Signed-off-by: Michael Kelley <[email protected]>
---
drivers/scsi/storvsc_drv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index e6bc622..659196a 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1567,6 +1567,8 @@ static int storvsc_device_configure(struct scsi_device *sdevice)
{
blk_queue_rq_timeout(sdevice->request_queue, (storvsc_timeout * HZ));
+ /* storvsc devices don't support MAINTENANCE_IN SCSI cmd */
+ sdevice->no_report_opcodes = 1;
sdevice->no_write_same = 1;
/*
--
1.8.3.1
On Fri, 09 Jun 2023 13:38:21 -0700, Michael Kelley wrote:
> Hyper-V synthetic SCSI devices do not support the MAINTENANCE_IN SCSI
> command, so scsi_report_opcode() always fails, resulting in messages
> like this:
>
> hv_storvsc <guid>: tag#205 cmd 0xa3 status: scsi 0x2 srb 0x86 hv 0xc0000001
>
> The recently added support for command duration limits calls
> scsi_report_opcode() four times as each device comes online, which
> significantly increases the number of messages logged in a system with
> many disks.
>
> [...]
Applied to 6.4/scsi-fixes, thanks!
[1/1] scsi: storvsc: Always set no_report_opcodes
https://git.kernel.org/mkp/scsi/c/31d16e712bdc
--
Martin K. Petersen Oracle Linux Engineering