- Increasing queue depth gives ~100% performance improvement for
randwrite fio test in Azure.
- New channel selection, which takes LUN id and the current cpuid
into consideration, gives additional ~20% performance improvement
for ranwrite fio test in Azure.
Submitted by: Hongzhang Jiang <honzhan microsoft com>
Modified by: sephe
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7622
SRB status is set to 0x20 by the hypervisor, if the specified LUN is
unaccessible, and even worse the INQUIRY response will not be set by
the hypervisor at all under this situation. Additionally, SRB status
is 0x20 too, for TUR on an unaccessible LUN.
Deliver CAM_SEL_TIMEOUT to CAM upon SRB status errors as suggested by
Scott Long, other values seems improper.
This commit fixes the Hyper-V disk hotplug support.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7521
The Hyper-V on pre-win10 systems will only report SPC-2 conformance,
but it actually conforms to SPC-3. The INQUIRY response is adjusted
to propagate the SPC-3 version information to CAM.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7405
Just make sure that the total channel packet size does not exceed 1/2
data size of the TX bufring.
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7359
The prepares to kill device private fields in channel struct, which
are not flexible and extensible.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7243
And create cpu to channel map at device attach time for storvsc(4).
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7229
This paves way for the further cleanup/disentangle.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7092
This paves way to nuke the hv_device, which is actually an unncessary
indirection.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7027
Instead of global variable, vmbus version is accessed through
a vmbus DEVMETHOD now.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6953
Pin the channel to cpu0 by default. Drivers having special channel-cpu
mapping requirement should call vmbus_channel_cpu_{set,rr}() themselves.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6918
The current command response handling discards status and xfer
length unconditionally, so that all of the commands would be
considered successful, even if errors happened. When errors
really happens, this causes all kinds of wiredness, since the
buffer will not be filled on the host side and sense data will
be ignored.
Most of the time, errors do not happen, however, error does
happen for the request sent immediately after the disk resizing.
Discarding the SCSI status (SCSI_STATUS_CHECK_COND) and sense
data (capacity changes) prevents the disk resizing from working
properly.
This commit saves the response status and xfer length properly
for later use.
Submitted by: Dexuan Cui <decui microsoft com>
Noticed by: sephe
MFC after: 3 days
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7181
On WIN8 like host systems, when rescan happens, the already installed
disks seem to return random invalid results for INQUIRY.
More investigation is under way to figure out why random invalid INQUIRY
results are delivered to VM on WIN8 like host systems.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: sephe
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6316
Since the sub-channel offers are synchronized, we can do our own
channel setup without using the sub-channel creation callback.
This paves the way to whack the sub-channel creation callback.
MFC after: 1 week
Sponsored by: Microsoft OSTC
This fixes the sub-channel offer race after Hyper-V device probe/attach
is moved to vmbus SYSINIT/attach.
MFC after: 1 week
Sponsored by: Microsoft OSTC
And unregister hv_device only for primary channels, who own the hv_device.
MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D5451
Windows 10 and Window 2016 will return all zero inquiry data for
non-existing slots. If we dispatched them, then a lot of useless
(0 sized) disks would be created. So we verify the returned inquiry
data (valid type, non-empty vendor/product/revision etc.), before
further dispatching.
Minor white space cleanup and wording fix.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: adrian, sephe, Jun Su <junsu microsoft com>
Approved by: adrian (mentor)
Modified by: sephe
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D4928
years for head. However, it is continuously misused as the mpsafe argument
for callout_init(9). Deprecate the flag and clean up callout_init() calls
to make them more consistent.
Differential Revision: https://reviews.freebsd.org/D2613
Reviewed by: jhb
MFC after: 2 weeks
- Vmbus multi channel support.
- Vector interrupt support.
- Signal optimization.
- Storvsc driver performance improvement.
- Scatter and gather support for storvsc driver.
- Minor bug fix for KVP driver.
Thanks royger, jhb and delphij from FreeBSD community for the reviews
and comments. Also thanks Hovy Xu from NetApp for the contributions to
the storvsc driver.
PR: 195238
Submitted by: whu
Reviewed by: royger, jhb, delphij
Approved by: royger
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Microsoft OSTC
Previously, any timeout value for which (timeout * hz) will overflow the
signed integer, will give weird results, since callout(9) routines will
convert negative values of ticks to '1'. For unsigned integer overflow we
will get sufficiently smaller timeout values than expected.
Switch from callout_reset, which requires conversion to int based ticks
to callout_reset_sbt to avoid this.
Also correct isci to correctly resolve ccb timeout.
This was based on the original work done by Eygene Ryabinkin
<rea@freebsd.org> back in 5 Aug 2011 which used a macro to help avoid
the overlow.
Differential Revision: https://reviews.freebsd.org/D1157
Reviewed by: mav, davide
MFC after: 1 month
Sponsored by: Multiplay
