On Azure, we have seen instances of unbounded I/O latencies. To deal with
this issue, implement handler that can reset the timeout. Note that the
host gaurantees that it will respond to each command that has been issued.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta
this.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 17 ++---
1 files changed, 10 insertions(+), 7 deletions(-)
diff --git
Set cmd_per_lun to reflect value supported by the Host.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1
In this patch set I have fixed a few bugs and implemented some enhancements.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
K. Y. Srinivasan (8):
Drivers: scsi: storvsc: Change the limits to reflect the values on
the host
Drivers: scsi
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 12 +---
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 47 +---
1 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
this.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 17 ++---
1 files changed, 10 insertions(+), 7 deletions(-)
diff --git
On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi
Implement a simple abort handler. The host does not support Abort; just
ensure that all inflight I/Os have been accounted for.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/scsi
).
Make command filtering depend on the host version.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 16 +---
1 files changed
SRB status can have additional information. Mask these out before processing
SRB status.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c
Set cmd_per_lun to reflect value supported by the Host.
In this version of the patch I have addressed comments from
Christoph Hellwig h...@infradead.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1
In this patch set I have fixed a few bugs and implemented some enhancements.
K. Y. Srinivasan (8):
Drivers: scsi: storvsc: Change the limits to reflect the values on
the host
Drivers: scsi: storvsc: Filter commands based on the storage protocol
version
Drivers: scsi: storvsc: Fix
Going forward it is possible that some of the commands that are not currently
implemented will be implemented on future Windows hosts. Make command filtering
depend on the host version.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c
On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |7 +++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git
Hyper-V hosts can support multiple targets and multiple channels and larger
number of
LUNs per target. Update the code to reflect this. With this patch we can
correctly
enumerate all the paths in a multi-path storage environment.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta
SRB status can have additional information. Mask these out before processing
SRB status.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi
this.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 14 +++---
1 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 759853c..d9d8051 100644
--- a/drivers/scsi
Implement a simple abort handler. The host does not support Abort; just
ensure that all inflight I/Os have been accounted for.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 22 ++
1 files changed, 22 insertions(+), 0 deletions(-)
diff
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c | 12 +---
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git
Host does not handle WRITE_SAME_16; filter this command out. This patch
is required to handle large devices (greater than 2 TB disks).
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0
Commit ID: 7e660100d85af860e7ad763202fff717adcdaacd added code to derive the
FLUSH_TIMEOUT from the basic I/O timeout. However, this patch did not use the
basic I/O timeout of the device. Fix this bug.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/scsi/sd.c |4 +++-
1 files
Hyper-V hosts can support multiple targets and multiple channels and larger
number of
LUNs per target. Update the code to reflect this. With this patch we can
correctly
enumerate all the paths in a multi-path storage environment.
MS-TFS: 173725
Signed-off-by: K. Y. Srinivasan k
.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/scsi/sd.c |5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e62d17d..8aff306 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -829,7 +829,7 @@ static int
The SD_FLUSH_TIMEOUT value is currently hardcoded. On our cloud, we
sometimes hit this timeout. I was wondering if we could make this
a module parameter. If this is acceptable, I can send you a patch for
this.
Regards,
K. Y
--
To unsubscribe from this list: send the line unsubscribe linux-scsi
Increase the value of STORVSC_MAX_IO_REQUESTS to 200 requests. The current
ringbuffer size can support this higher value.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions
Add support for synthetic Fibre Channel devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
Implement multi-channel support for the storage devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 131 ++-
1 files changed, 127 insertions(+), 4 deletions
Update the storage protocol to the win8 level.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 203
1 files changed, 168 insertions(+), 35 deletions(-)
diff --git
since (a) the host is already
implementing a variety of recovery strategies and (b) implementing a recovery
strategy at the VM level may be more appropriate in cases where storage
latencies
exceed a certain threshold.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang
related changes. I have since separated the VMBUS chages and these have already
been
checked in.
K. Y. Srinivasan (5):
Drivers: scsi: storvsc: Make the scsi timeout a module parameter
Drivers: scsi: storvsc: Update the storage protocol to win8 level
Drivers: scsi: storvsc: Implement multi
Add support for synthetic Fiber Channel devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
Increase the value of STORVSC_MAX_IO_REQUESTS to 200 requests. The current
ringbuffer size can support this higher value.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions
Implement multi-channel support for the storage devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 131 ++-
1 files changed, 127 insertions(+), 4 deletions
Update the storage protocol to the win8 level.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 203
1 files changed, 168 insertions(+), 35 deletions(-)
diff --git
the scsi
patches.
In this version, based on Greg's comments, I have fixed the names of the
exported symbols from the vmbus driver.
K. Y. Srinivasan (7):
Drivers: hv: vmbus: Implement multi-channel support
Drivers: hv: Add the GUID fot synthetic fiber channel device
Drivers: scsi: storvsc: Make
In preparation for supporting synthetic Fiber Channel device, add the GUID for
this service.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
include/linux/hyperv.h | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff
of a given device across all available CPUs.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/hv/channel.c | 41 ++--
drivers/hv/channel_mgmt.c | 116 +++--
include/linux
The standard scsi timeout is not appropriate in some of the environments where
Hyper-V is deployed. Set this timeout appropriately for all devices managed
by this driver. Further make this a module parameter.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya
Implement multi-channel support for the storage devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 124 ++--
1 files changed, 120 insertions(+), 4 deletions
Add support for synthetic Fiber Channel devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
Increase the value of STORVSC_MAX_IO_REQUESTS to 200 requests. The current
ringbuffer size can support this higher value.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |2 +-
1 files changed, 1 insertions
Update the storage protocol to the win8 level.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 203
1 files changed, 168 insertions(+), 35 deletions(-)
diff --git
Add support for synthetic Fiber Channel devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c |6 ++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers
patches.
K. Y. Srinivasan (6):
Drivers: hv: vmbus: Implement multi-channel support
Drivers: hv: Add the GUID fot synthetic fiber channel device
Drivers: scsi: storvsc: Make the scsi timeout a module parameter
Drivers: scsi: storvsc: Update the storage protocol to win8 level
Drivers: scsi
of a given device across all available CPUs.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/hv/channel.c | 41 ++--
drivers/hv/channel_mgmt.c | 117 +++--
include/linux
Implement multi-channel support for the storage devices.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 124 ++--
1 files changed, 120 insertions(+), 4 deletions
In preparation for supporting synthetic Fiber Channel device, add the GUID for
this service.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
include/linux/hyperv.h | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff
The standard scsi timeout is not appropriate in some of the environments where
Hyper-V is deployed. Set this timeout appropriately for all devices managed
by this driver. Further make this a module parameter.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya
Here is the code snippet for scanning LUNS (drivers/scsi/scsi_scan.c in
function
__scsi_scan_target()):
/*
* Scan LUN 0, if there is some response, scan further. Ideally, we
* would not configure LUN 0 until all LUNs are scanned.
*/
res =
This patch set (two of the patches are being resent) fixes and enhances
the functionality of the Hyper-V storage driver
K. Y. Srinivasan (3):
Drivers: scsi: storvsc: Initialize the sglist
Drivers: scsi: storvsc: Restructure error handling code on command
completion
Drivers: scsi
In preparation for handling additional sense codes, restructure and cleanup
the error handling code in the command completion code path.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 101
Initialize sglist before using it.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 270b3cf..5ada1d0
Handle LUN size changes by re-scanning the device.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Reviewed-by: Haiyang Zhang haiya...@microsoft.com
---
drivers/scsi/storvsc_drv.c | 31 +++
1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/drivers
. WRITE_SAME isnt really
supported by both versions, so disable the command usage globally.
Signed-off-by: Olaf Hering o...@aepfle.de
Cc: KY Srinivasan k...@microsoft.com
Cc: linux-scsi@vger.kernel.org
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/scsi/storvsc_drv.c |4
1 files
Properly initialize scatterlist before using it.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index
The host expects that the pressure report includes the pressure due to the
pages that have been ballooned. Make necessary adjustments to reflect that.
Also, include the free memory information in the pressure report.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/hv/hv_balloon.c
The host expects that the pressure report includes the pressure due to the
pages that have been ballooned. Make necessary adjustments to reflect that.
Also, include the free memory information in the pressure report.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
---
drivers/hv/hv_balloon.c
Properly initialize scatterlist before using it.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index
Properly initialize scatterlist before using it.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: Stable sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
.
Currently, the host does not do anything with the RESET command.
Signed-off-by: K. Y. Srinivasan k...@microsoft.com
Cc: sta...@vger.kernel.org
---
drivers/scsi/storvsc_drv.c |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi
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