ATTENTION. This change moves the
Ewan code to free the larger CDB into sd_unprep_fn instead, which is
Ewan invoked after the request is complete.
The 32-byte CDB support predates unprep. This fix is obviously the
correct approach.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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from? At
Doug least somebody who cares when they see that comment might contact
Doug Martin Petersen and ask why he chose that value.
And the answer is that WRITE SAME(10) takes a two-byte block count.
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of them?
Stefan Hence let's remove the no_report_opcodes and no_write_same
Stefan blacklist flags so that these commands can be used on
Stefan respectively capable targets.
I just erred on the side of caution. If you are happy without belt and
suspenders that's perfectly ok with me :)
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is a really rare corner case.
So while I agree we should handle the UA scenario correctly, I'm not
sure I agree with the fix. Why are you messing with Type 2 devices in
the first place? These should really only be used inside disk arrays.
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that we need.
Also shouldn't be a problem.
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, please also send that to:
lsf...@lists.linux-foundation.org
Thank you on behalf of the program committee:
Storage:
Martin K. Petersen
Jens Axboe
James Bottomley
Filesystems:
Ric Wheeler
Christoph Hellwig
Jaegeuk Kim
Jeffrey Layton
or the HBA hardware do the remapping.
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a few
IOCB fields than it is to rewrite how an application does I/O.
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is really only good for disk drives. Most array
vendors use it internally. And going forward we're going to use it for
access control instead of opaque storage. So exposing the application
tag space to userland applications is of very limited use at this point.
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Dan == Dan Carpenter dan.carpen...@oracle.com writes:
Dan This patch wasn't applied.
Nope, but it hasn't been forgotten. I have it in my resubmit queue with
a couple of other stable fixes.
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Darrick == Darrick J Wong darrick.w...@oracle.com writes:
Darrick Is there a newer one than this?
Darrick https://oss.oracle.com/projects/oracleasm/files/sources/
UEK2 git.
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patches in the pipeline that fixes this. They also add
support for protection intervals different from the logical block size.
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reorganization of this code in question
fixed the warning.
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Doug == Douglas Gilbert dgilb...@interlog.com writes:
Doug This is Martin's area of expertise so I hope he also acks it.
Doug Acked-by: Douglas Gilbert dgilb...@interlog.com
I believe I already did, but:
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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, just 100 times worse :(
Anyway. Excited to see nab posting the patches! My copy offload code
from the spring has been getting stale both in the T10 and the kernel
sense. But at least we know what I'll be working on next week :)
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in function
Sumit megasas_init_fw()(inside file: megaraid_sas_base.c),
Patches welcome!
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of the driver...
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to trigger a restacking of the queue limits I think
it's inevitable. We see more and more devices that change properties
after a firmware upgrade. I think we'll just have to bite the bullet and
work on that...
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to prot_sglist.
Akinobu This factors out the portion of copying protection info into a
Akinobu separate function. It will also be reused in the next change
Akinobu after supporting the opposite direction (copying prot_sglist to
Akinobu dif_storep).
Acked-by: Martin K. Petersen martin.peter
int' instead of adding extra check for a negative
Akinobu value.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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Akinobu == Akinobu Mita akinobu.m...@gmail.com writes:
Akinobu Each member in data integrity field tuple is big-endian. But
Akinobu the endianness of the values being compared with these members
Akinobu are not annotated. So this fixes these sparse warnings.
Acked-by: Martin K. Petersen
Keith == Keith Busch keith.bu...@intel.com writes:
Keith The ref tag should be the device's physical LBA rather than the
Keith 512 byte bio sector.
The bip sector is just a seed value set by the application. It is not
correct to scale it based on sector size or PI interval.
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.
Akinobu Reusing dif_copy_prot() with supporting the opposite direction
Akinobu simplifies this fix.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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Seagate drive. However, skip_vpd_pages
is also set by USB.
I'm still completely in favor of your patch to reduce the VPD buffer
size. Please resubmit and feel free to add my Acked-by:.
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the matching at discovery time instead of
once a WRITE SAME is issued.
This would also permit HBA drivers to toggle the feature on a per
instance basis. I.e. if RAID controller firmware rev is lower than XYZ,
do not support WRITE SAME.
I'll do a PoC later today...
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that can't be handled.
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there's an off-by-one bug in the UNMAP translation.
Sumit, is this something you guys can look into?
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David The resetting of sdkp-medium_access_timed_out should occur
David before the check for sense data.
David Signed-off-by: David Jeffery djeff...@redhat.com
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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Not at this time, no.
However, you can fork a child process to execute the ioctl and wait for
that to complete.
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that such a device doesn't exist,
of course, but the patch was originally done to handle the irreparably
broken error case.
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-by: Martin K. Petersen martin.peter...@oracle.com
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I was torn between using the existing emulated flag or introducing a
new one. I ended up doing the latter but I'm also OK with setting
emulated for drivers that don't already and keying off of that. Comments
welcome...
diff --git a/drivers/ata
TRIM support in
Christoph libata entirely.
The flag effectively disables advertising REQ_WRITE_SAME support to the
block layer (max_write_same_sectors). It doesn't prevent anyone from
issuing write same commands in general. Such as the sd discard prep_fn
and users of sg/bsg.
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.
Looks good to me, Andy.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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/?l=linux-scsim=138252394614920w=2
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, thank you! This patch is over a month old, do you know
Justin if is currently in mainline?
Nope. - James?
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.
James has it queued in scsi/fixes. It'll make it to Linus on the next
pull and it has been tagged for inclusion in stable.
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of complaints about WRITE SAME failed. Manually
zeroing. But I guess I can only blame myself for not making it clear
that that's a warning and not an error...
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that needs to be done in this area
I'll be happy to do so...
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passthrough interface?
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the current bio-bi_idx value after bio_advance().
That breaks partial completion, though. I'll take a look at Kent's
changes...
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enough to deserve logging at ERR severity?
I guess we could extend the first_scan logic to cover the error case
scenarios. But it is quite unusual for a device to not implement the
caching mode page...
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Martin == Martin K Petersen martin.peter...@oracle.com writes:
Martin I guess we could extend the first_scan logic to cover the error
Martin case scenarios.
[SCSI] sd: Quiesce mode sense error messages
Messages about discovered disk properties are only printed once unless
they are found
++
2 files changed, 44 insertions(+), 93 deletions(-)
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More
From: Martin K. Petersen martin.peter...@oracle.com
On systems with a non power-of-two CPU count the existing MSI-X grouping
code failed to distribute interrupts correctly. Rework the code to
handle arbitrary processor counts.
Also remove the hardcoded upper limit on the number of processors so
From: Martin K. Petersen martin.peter...@oracle.com
On systems with a non power-of-two CPU count the existing MSI-X grouping
code failed to distribute interrupts correctly. Rework the code to
handle arbitrary processor counts.
Also remove the hardcoded upper limit on the number of processors so
K. Petersen Oracle Linux Engineering
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handling in the iscsi layer for it. I
Mike can make a patch if you have not already.
It would be awfully nice to get it turned into an ILLEGAL
REQUEST/0x20/0x0.
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that. Doesn't in any way preclude LID4 being supported as well.
Hannes As said, Doug and me are working on putting this into sg3_utils,
Hannes then we'll have a better idea on the actual workings.
Cool! That'll save me some headaches when we start seeing LID4 devices.
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with this?
I'll start reviewing the pieces tomorrow.
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own tree.
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OK. It doesn't make much
sense to create a PI LUN and then not have PI enabled.
Reviewed-by: Martin K. Petersen martin.peter...@oracle.com
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nab == Nicholas A Bellinger n...@daterainc.com writes:
nab This patch updates spc_emulate_evpd_86() (extended INQUIRY) to
nab report GRD_CHK (Guard Check) and REF_CHK (Reference Check) bits
nab when DIF emulation is enabled by the backend device.
Reviewed-by: Martin K. Petersen martin.peter
nab == Nicholas A Bellinger n...@daterainc.com writes:
nab This patch updates sbc_emulate_readcapacity_16() to set P_TYPE and
nab PROT_EN bits when DIF emulation is enabled by the backend device.
Reviewed-by: Martin K. Petersen martin.peter...@oracle.com
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using the array management
interface.
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are following what scsi_debug is
nab currently exposing minus FORMAT_UNIT support..?
PROT_EN and P_TYPE should be fine for now.
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Andy -- requiring offset calculations, non-aligned read-modify-write,
Andy and all that unpleasantness to be handled?
I only think interleaved makes sense if you're passing the PI through
instead of emulating.
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nab == Nicholas A Bellinger n...@daterainc.com writes:
nab This patch updates spc_modesense_control() to set the Application
nab Tag Owner (ATO) bit when when DIF emulation is enabled by the
nab backend device.
Reviewed-by: Martin K. Petersen martin.peter...@oracle.com
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-accelerated T10 CRC I don't think it's a big deal.
(scsi_debug supports IP checksum because it's both initiator and
target).
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should turn off
Sagi the backstore DIF verify emulation to sustain performance.
Yeah, for SAS and FC it would be nice to leverage DIX and let the ASIC
do the actual checking and splitting. I assume the same is true for your
hw.
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. And ideally you'd have a way to choose between IP and
T10 CRC for the guard type.
Otherwise OK.
Reviewed-by: Martin K. Petersen martin.peter...@oracle.com
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: reduce duplication between prot_verify_read and
Akinobu prot_verify_write)
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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unwritten sector is skipped.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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target and
initiator from performing PI-verification when that block is read.
If a block is subsequently written and no PI is sent from the host
(WRPROTECT=0), the target must generate valid PI for each block.
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read. But it
makes no sense to do that given that you will have to do the T10 CRC
calculation regardless. Even if the backing store is DIX-capable and
supports the IP checksum.
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the blocks are unwritten or not.
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nab == Nicholas A Bellinger n...@linux-iscsi.org writes:
nab Sure, this can be exposed at a tcm_loop configfs attribute that is
nab accessible after scsi_add_host() has been called, which I assume is
nab OK to do..
As long as it's set before we discover devices.
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). So we revived our original Type 4
proposal which is 16 bytes of protection information per interval
(CRC32C, 48-bit LBA and 6 bytes of app tag). The proposal has been
sitting around for a while waiting for SBC-4 to open.
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of the T10
spec that doesn't mandate block sizes or accompanying PI types).
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() of protection information in
nab the bio_endio READ completion path.
Only if the submit_bio() caller hasn't attached protection information
already. If you submit a bio with a bip already attached the block layer
will not generate/verify.
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the protection type
nab by looking at struct blk_integrity, but it would be helpful to make
nab this explicit with bi-prot_type.
You need to match on the integrity profile string. T10-DIF-TYPE1-IP
means it's DIF Type 1 format with IP checksum.
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. The latter requires a bit of massaging that
interferes with other pending changes.
Given that your patch does address a valid issue I'm OK with Jens
putting it in as is. I'll build upon it for my changes.
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of an HBA-enforced global).
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nab prototyping, and is not supported by any real backend storage
nab hardware.
We are shipping several products with support for the IP checksum. But
it's between application and initiator only. From there on it's all T10
CRC as required by the spec.
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that this is something we'll need to address sooner
rather than later.
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for enterprise drives. The vendors appear to be
divided between 4Kn and 512e with RMW mitigation.
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. Ensure that we check
against BIP_INLINE_VECS in that case.
Reported-by: David Milburn dmilb...@redhat.com
Signed-off-by: Martin K. Petersen martin.peter...@oracle.com
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index fc60b31453ee..6dea2b90b4d5 100644
--- a/fs/bio-integrity.c
+++ b/fs
Doug == Douglas Gilbert dgilb...@interlog.com writes:
Doug The parts of this patch that I understand look fine. Perhaps
Doug Martin should ack it, if he sees fit.
Just had another look at the updated pieces. Patch series looks good to
me.
Reviewed-by: Martin K. Petersen martin.peter
to /sbin/scsi_id.
I'll take a look at your patch later today...
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that in udev rules I guess
that's OK with me.
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# sg_vpd -p lbpv /dev/sdc
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losetup, rather than using module
Phillip parameters.
The question is how much sense it makes to invest in scsi_debug now that
we have the LIO target in the kernel?
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.
Kurtprovisioning: lbpme=0, lbprz=0 Last logical block
^^^
This indicates the SAT on the mpt2sas board didn't enable discard
support for the drive.
Please provide the full output of hdparm -I. Maybe we can get some clues
as to why that is...
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whether
to support logical block provisioning (in addition to support for the
DSM TRIM command).
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Toralf == Toralf Förster toralf.foers...@gmx.de writes:
Toralf I'm just wondering why it happens 3 times in a row :
http://marc.info/?l=linux-scsim=138879119205889
James: Ping on this patch.
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+ pickup..?
Please remove total as suggested by Akinobu.
Acked-by: Martin K. Petersen martin.peter...@oracle.com
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More
branch
Hannes scsi-logging.v3
I like the printk cleanups and the more sensible sense printing. But why
perpetuate the crufty old SCSI logging stuff when we have SCSI tracing?
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with a GUARD or REFERENCE TAG
nab failure.
nab MKP..?
Yeah, that should be OK.
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page query for every command (~32 megs of
data)?
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.
Why don't you just set the prot_mask module parameter to 0?
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contiguous block of memory pool.
Please also consider these patches that fix MSI-X issues on large
systems:
http://marc.info/?l=linux-scsim=138879464506586
http://marc.info/?l=linux-scsim=138879465206588
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protection scheme
internally. And then synthesize PI on the host-facing side. Some even do
T10 PI to an internal protection scheme and then back to T10 PI when
talking to the disk drives in the back end.
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Martin K. Petersen Oracle Linux Engineering
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From: Martin K. Petersen martin.peter...@oracle.com
We'd occasionally attempt to generate protection information for flushes
and other requests with a zero payload. Make sure we only attempt to
enable integrity for reads and writes.
Signed-off-by: Martin K. Petersen martin.peter...@oracle.com
Martin == Martin K Petersen martin.peter...@oracle.com writes:
Martin Commit bf36f9cfa6d3d caused a regression by effectively
Martin reverting Nic's fix from 5837c80e870b that ensures we traverse
Martin the full bio_vec list upon completion.
Btw. I have a much better fix for this in the next
From: Martin K. Petersen martin.peter...@oracle.com
cmd_flags in struct request is now 64 bits wide but the scsi_execute
functions truncated arguments passed to int leading to errors. Make sure
the flags parameters are u64.
Signed-off-by: Martin K. Petersen martin.peter...@oracle.com
Cc: Jens
objections.
FWIW, the reason my patch didn't handle the recovery scenario is that
the devices I originally wrote it for never came back (irreversibly
stuck head assembly or dead FTL).
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Martin K. Petersen Oracle Linux Engineering
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Bernd == Bernd Schubert bernd.schub...@itwm.fraunhofer.de writes:
Bernd Any other suggestions for ~240GB SSDs supporting DRAT and DZAT or
Bernd trim-on-lsi-sas in general?
intel drives (other than the 510 which was a one-off) are generally
very well-behaved.
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Martin K. Petersen Oracle
not entirely
sure it worth the hassle to do the same for target and virtio. The
memory savings aren't that big to begin with.
And besides, the bip pointer field in struct bio is about to become
generic with my impending copy offload patches anyway,
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Martin K. Petersen Oracle Linux Engineering
|7
lib/Makefile |2
lib/t10-pi.c | 164
23 files changed, 627 insertions(+), 644 deletions(-)
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bdev_integrity_enabled() is only used by bio_integrity_enabled().
Combine these two functions.
Signed-off-by: Martin K. Petersen martin.peter...@oracle.com
---
Documentation/block/data-integrity.txt | 10 -
block/bio-integrity.c | 39
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