On Mon, Feb 14 2022 at 9:02P -0500,
Christoph Hellwig wrote:
> On Fri, Feb 11, 2022 at 04:40:53PM -0500, Mike Snitzer wrote:
> > DM needs the ability to account a clone bio's IO to the original
> > block_device. So add @orig_bdev argument to bio_start_io_acct_time.
> >
> > Rename
On Mon, Feb 14, 2022 at 01:29:50PM +0530, Nitesh Shetty wrote:
> The patch series covers the points discussed in November 2021 virtual call
> [LSF/MM/BFP TOPIC] Storage: Copy Offload[0].
> We have covered the Initial agreed requirements in this patchset.
> Patchset borrows Mikulas's token based
Complements v0.6.0 commit
01ab2a468ea2 ("libmultipath: Add additional path wildcards") as well as
("libmultipath: support host adapter name lookup for s390x ccw bus").
With that we can easily get the full FCP addressing triplet
(HBA, WWPN, FCPLUN) from multipath tools without additional tools
and
There are also (FCP) HBAs that appear on a bus different from PCI.
Complements v0.6.0 commit
01ab2a468ea2 ("libmultipath: Add additional path wildcards").
With that we can easily get the full FCP addressing triplet
(HBA, WWPN, LUN) from multipath tools without additional tools
and correlation:
It is quicker and easier than writing some script to correlate
multipath output with other query tooling for FCP addressing.
For patch set version ChangeLog, see indidivual patches.
Steffen Maier (2):
libmultipath: support host adapter name lookup for s390x ccw bus
libmultipath: add %L path
Setting marginal_pathgroups to fpin causes two new threads to be created
when multipathd starts. Turning it on after multipathd starts up won't
cause the theads to start, and turing it off won't keep the threads from
working. So disallow changing marginal_pathgroups to/from "fpin" on
reconfigure.
On Fri, Feb 11, 2022 at 04:40:53PM -0500, Mike Snitzer wrote:
> DM needs the ability to account a clone bio's IO to the original
> block_device. So add @orig_bdev argument to bio_start_io_acct_time.
>
> Rename bio_start_io_acct_time to bio_start_io_acct_remapped.
>
> Also, follow bio_end_io_acct
Looks good,
Reviewed-by: Christoph Hellwig
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For the devices which does not support copy, copy emulation is
added. Copy-emulation is implemented by reading from source ranges
into memory and writing to the corresponding destination synchronously.
Signed-off-by: Nitesh Shetty
Signed-off-by: Vincent Fu
---
block/blk-lib.c | 119
>>On Thu, Feb 10, 2022 at 06:30:23PM -0800, Qing Wang wrote:
>> From: Wang Qing
>>
>> It is better to use time_is_xxx() directly instead of jiffies judgment
>> for understanding.
>
>Hi Wang,
>
>"judgement" doesn't really make sense as a description to an English
>speaker. The following a
From: SelvaKumar S
Make bio_map_kern() non static
Signed-off-by: SelvaKumar S
Signed-off-by: Nitesh Shetty
---
block/blk-map.c| 2 +-
include/linux/blkdev.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/blk-map.c b/block/blk-map.c
index
Setting copy_supported flag to enable offload.
Signed-off-by: Nitesh Shetty
---
drivers/md/dm-linear.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c
index 1b97a11d7151..8910728bc8df 100644
--- a/drivers/md/dm-linear.c
+++
Add new BLKCOPY ioctl that offloads copying of one or more sources ranges
to one or more destination in a device. COPY ioctl accepts a 'copy_range'
structure that contains no of range, a reserved field , followed by an
array of ranges. Each source range is represented by 'range_entry' that
From: SelvaKumar S
For device supporting native copy, nvme driver receives read and
write request with BLK_COPY op flags.
For read request the nvme driver populates the payload with source
information.
For write request the driver converts it to nvme copy command using the
source information in
From: Arnav Dawn
Add support for handling target command on target.
For bdev-ns we call into blkdev_issue_copy, which the block layer
completes by a offloaded copy request to backend bdev or by emulating the
request.
For file-ns we call vfs_copy_file_range to service our request.
Currently
From: SelvaKumar S
Introduce copy_jobs to use copy-offload, if supported by underlying devices
otherwise fall back to existing method.
run_copy_jobs() calls block layer copy offload API, if both source and
destination request queue are same and support copy offload.
On successful completion,
Add device limits as sysfs entries,
- copy_offload (RW)
- copy_max_bytes (RW)
- copy_max_hw_bytes (RO)
- copy_max_range_bytes (RW)
- copy_max_range_hw_bytes (RO)
- copy_max_nr_ranges (RW)
- copy_max_nr_ranges_hw (RO)
Above limits help to
The patch series covers the points discussed in November 2021 virtual call
[LSF/MM/BFP TOPIC] Storage: Copy Offload[0].
We have covered the Initial agreed requirements in this patchset.
Patchset borrows Mikulas's token based approach for 2 bdev
implementation.
Overall series supports –
1. Driver
Before enabling copy for dm target, check if underlying devices and
dm target support copy. Avoid split happening inside dm target.
Fail early if the request needs split, currently splitting copy
request is not supported.
Signed-off-by: Nitesh Shetty
---
drivers/md/dm-table.c | 45
On Thu, 2022-02-10 at 18:30 -0800, Qing Wang wrote:
> From: Wang Qing
>
> It is better to use time_xxx() directly instead of jiffies judgment
> for understanding.
>
> Signed-off-by: Wang Qing
Acked-by: Srinivas Pandruvada
> ---
> drivers/hid/intel-ish-hid/ipc/ipc.c | 2 +-
> 1 file changed,
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