> "Sreekanth" == Sreekanth Reddy writes:
Sreekanth> Also coming to first point i.e. the usage of scsi_get_lba()
Sreekanth> API instead of parsing the CDB. During an experiment I
Sreekanth> observe that when I use the 'sg_dd if=/dev/sg0 of=/dev/null
Sreekanth> count=1' command for read operati
> "Sreekanth" == Sreekanth Reddy writes:
Sreekanth> I have tried with this diff. And I still observe the invalid
Sreekanth> LBA (i.e. 0x) with scsi_get_lba() API when I used
Sreekanth> the sg_dd with input file specified as /dev/sg0.
Yeah, I now remember that scsi_get_lba() fails fo
Despite supporting modern SCSI features some storage devices continue to
claim conformance to an older version of the SPC spec. This is done for
compatibility with legacy operating systems.
Linux by default will not attempt to read VPD pages on devices that
claim SPC-2 or older. Introduce a b
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Bump mpt2sas driver version to 18.100.00.00.
Reviewed-by: Martin K. Petersen
--
Martin K. Petersen Oracle Linux Engineering
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the body of a message to major
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Below is the change set in MPI2.5 Rev G specification and
Sreekanth> 2.00.31 header files
Sreekanth> 1) Added SCSIStatusQualifier to SCSI IO Error Reply message.
Sreekanth> 2) Added ATA Security Freeze Lock to IO Unit Page 1 Flags
Sreekanth
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Added code to send an SEP message that turns off the
Sreekanth> Predictive Failure LED when a drive is removed (if Predictive
Sreekanth> Failure LED was turned on).
Sreekanth> Added a new flag 'pfa_led_on' per device that tracks the
Sreeka
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Copyright in driver sources is updated for year the 2014.
Reviewed-by: Martin K. Petersen
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the body of a mess
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Added following branding Strings for Intel custom HBAs
Sreekanth> support
Reviewed-by: Martin K. Petersen
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th
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Below is the change set in MPI2.5 Rev H specification and
Sreekanth> 2.00.32 header files
[...]
Reviewed-by: Martin K. Petersen
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> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Bump mpt3sas driver version to 03.100.00.00.
Reviewed-by: Martin K. Petersen
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> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> Bump mpt3sas driver version to 04.100.00.00.
Reviewed-by: Martin K. Petersen
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> "Sreekanth" == Sreekanth Reddy writes:
Sreekanth> But still I observe the invalid LBA when we send IOs using
Sreekanth> sg_dd with input file specified as /dev/sg0 as shown below
In the latest patch I get the LBA from CDB32 in the MPI request so that
shouldn't happen.
--
Martin K. Peters
> "Rob" == Elliott, Robert (Server Storage) writes:
Rob,
Rob> When resp_unmap is the caller, though, there is no guarantee that
Rob> the data will change.
Rob> Maybe another modparam should be included to cause the driver to
Rob> purposely ignore unmap requests? That might help more people
> "Sreekanth" == Reddy, Sreekanth writes:
Sreekanth> The driver would send IOC facts only if HBA is in operational
Sreekanth> or ready state. If it is in fault state, a diagnostic reset
Sreekanth> would be issued. It would wait for 10 seconds to exit out of
Sreekanth> reset state. If the HBA
Hi
I annouce that I released the first version of a patch set that makes it
possible to use SCSI XCOPY offload for the block layer and device mapper.
The patchset is at
http://people.redhat.com/~mpatocka/patches/kernel/xcopy/series.html It
requires kernel version at least 3.16-rc4. It was test
On Tue, Jul 15, 2014 at 02:33:13PM -0400, Mikulas Patocka wrote:
> Hi
>
> I annouce that I released the first version of a patch set that makes it
> possible to use SCSI XCOPY offload for the block layer and device mapper.
>
> The patchset is at
> http://people.redhat.com/~mpatocka/patches/kern
On Tue, 15 Jul 2014, Christoph Hellwig wrote:
> On Tue, Jul 15, 2014 at 02:33:13PM -0400, Mikulas Patocka wrote:
> > Hi
> >
> > I annouce that I released the first version of a patch set that makes it
> > possible to use SCSI XCOPY offload for the block layer and device mapper.
> >
> > The pa
This patch series makes it possible to use SCSI XCOPY offload for the
block layer and device mapper.
It is based on Martin Petersen's work
https://git.kernel.org/cgit/linux/kernel/git/mkp/linux.git/commit/?h=xcopy&id=0bdeed274e16b3038a851552188512071974eea8,
but it is changed significantly so tha
This patch changes the architecture of xcopy so that two bios are used.
There used to be just one bio that held pointers to both source and
destination block device. However a bio with two block devices cannot
really be passed though block midlayer drivers (dm and md).
When we need to send the XC
This is Martin Petersen's xcopy patch
(https://git.kernel.org/cgit/linux/kernel/git/mkp/linux.git/commit/?h=xcopy&id=0bdeed274e16b3038a851552188512071974eea8)
with some bug fixes, ported to the current kernel.
This patch makes it possible to use the SCSI XCOPY command.
We create a bio that has RE
The block layer creates two bios for each copy operation. The bios travel
independently through the storage stack and they are paired at the block
device.
There is a theoretical problem with this - the block device stack only
guarantees forward progress for a single bio. When two bios are sent, it
This patch changes blkdev_issue_copy so that it returns the number of
copied sectors in the variable "copied".
The kernel makes best effort to copy as much data as possible, but because
of device mapper mapping, it may be possible that copying fails at some
stage. If we just returned the error num
We use merge_bvec_fn to make sure that copies do not split internal
boundaries of device mapper devices.
There is no possibility to split a copy bio (splitting would complicate
the design significantly), so we must use merge_bvec_fn to make sure that
the bios have appropriate size for the device m
block copy: use asynchronous notification
In dm-snapshot target there may be large number of copy requests in
progress. If every pending copy request consumed a process context, it
would put too much load on the system.
To avoid this load, we need asynchronous notification when copy finishes -
we
[ this isn't connected to XCOPY, but it is requires for the following
device mapper patches to apply cleanly ]
This function can be used if the target needs to receive another duplicate
of the current bio.
Signed-off-by: Mikulas Patocka
---
drivers/md/dm.c | 24
[ this isn't connected to XCOPY, but it is requires for the following
device mapper patches to apply cleanly ]
The target can set the function num_write_bios - dm will issue this
callback to ask the target how many bios does it want to receive.
This was intended for the dm-cache target, but it i
This patch implements basic copy support for device mapper core.
Individual targets can enable copy support by setting ti->copy_supported.
Device mapper device advertises copy support if at least one target
supports copy and for this target, at least one underlying device supports
copy.
Signed-of
Support copy operation in the linear target.
Signed-off-by: Mikulas Patocka
---
drivers/md/dm-linear.c |1 +
1 file changed, 1 insertion(+)
Index: linux-3.16-rc4/drivers/md/dm-linear.c
===
--- linux-3.16-rc4.orig/drivers/md/dm
Support the copy operation for the stripe target.
In stripe_merge, we verify that the underlying device supports copy. If it
doesn't, we can fail fast without any bio being contructed.
Signed-off-by: Mikulas Patocka
---
drivers/md/dm-stripe.c | 11 ++-
1 file changed, 10 insertions(+
This patch adds copy offload support to dm-kcopyd. If copy offload fails,
copying is performed using dm-io, just like before.
There is a module parameter "copy_offload" that can be set to enable or
disable this feature. It can be used to test performance of copy offload.
Signed-off-by: Mikulas Pa
job->lock is only taken for a finite amount of time and the process
doesn't block while holding it, so change it from mutex to spinlock.
This change is needed for the next patch that makes it possible to call
segment_complete from an interrupt. Taking mutexes inside an interrupt is
not allowed.
S
We move some code to a function submit_job. It is needed for the next
patch that calls submit_job from another place.
Signed-off-by: Mikulas Patocka
---
drivers/md/dm-kcopyd.c | 19 ---
1 file changed, 12 insertions(+), 7 deletions(-)
Index: linux-3.16-rc5/drivers/md/dm-kcopy
Change dm kcopyd so that it calls blkdev_issue_copy with an asynchronous
callback. There can be large number of pending kcopyd requests and holding
a process context for each of them may put too much load on the workqueue
subsystem.
This patch changes it so that blkdev_issue_copy returns after it
Signed-off-by: Anish Bhatt
Signed-off-by: Karen Xie
Signed-off-by: Manoj Malviya
---
drivers/scsi/cxgbi/libcxgbi.c | 237 ++
drivers/scsi/cxgbi/libcxgbi.h | 37 ++-
2 files changed, 253 insertions(+), 21 deletions(-)
diff --git a/drivers/scsi/cxgbi/
This define is used by cxgb4i and iw_cxgb4, moving to avoid code duplication
Signed-off-by: Anish Bhatt
Acked-by: Steve Wise
---
drivers/infiniband/hw/cxgb4/t4fw_ri_api.h | 1 -
drivers/net/ethernet/chelsio/cxgb4/t4_msg.h | 1 +
2 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/dri
Hi,
The following patchset add ipv6 support for the cxgb4i(iscsi) driver.
Patch 1 moves a define from the iw_cxgb4 to cxgb4 to prevent code duplication,
as it is used by cxgb4i and iw_cxgb4 both.
Patch 2 exports symbols needed by cxgb4i for ipv6 support from cxgb4.
Patch 3 & 4 deal with actual
Signed-off-by: Anish Bhatt
Signed-off-by: Karen Xie
Signed-off-by: Manoj Malviya
---
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 353 +
1 file changed, 314 insertions(+), 39 deletions(-)
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
b/drivers/scsi/cxgbi/cxgb4i/c
Signed-off-by: Anish Bhatt
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 10 ++
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h | 4
drivers/net/ethernet/chelsio/cxgb4/t4_msg.h | 2 ++
3 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/
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