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From: Chaitanya Kulkarni <chaitanyak@nvidia.com>
To: Nikos Tsironis <ntsironis@arrikto.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"dm-devel@redhat.com" <dm-devel@redhat.com>,
	"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Jens Axboe <axboe@kernel.dk>,
	"msnitzer@redhat.com >> msnitzer@redhat.com"
	<msnitzer@redhat.com>, Bart Van Assche <bvanassche@acm.org>,
	"martin.petersen@oracle.com >> Martin K. Petersen" 
	<martin.petersen@oracle.com>,
	"roland@purestorage.com" <roland@purestorage.com>,
	"mpatocka@redhat.com" <mpatocka@redhat.com>,
	Hannes Reinecke <hare@suse.de>,
	"kbus >> Keith Busch" <kbusch@kernel.org>,
	Christoph Hellwig <hch@lst.de>,
	"Frederick.Knight@netapp.com" <Frederick.Knight@netapp.com>,
	"zach.brown@ni.com" <zach.brown@ni.com>,
	"osandov@fb.com" <osandov@fb.com>,
	"lsf-pc@lists.linux-foundation.org" 
	<lsf-pc@lists.linux-foundation.org>,
	"djwong@kernel.org" <djwong@kernel.org>,
	"josef@toxicpanda.com" <josef@toxicpanda.com>,
	"clm@fb.com" <clm@fb.com>, "dsterba@suse.com" <dsterba@suse.com>,
	"tytso@mit.edu" <tytso@mit.edu>, "jack@suse.com" <jack@suse.com>
Subject: Re: [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload
Date: Tue, 1 Mar 2022 21:32:23 +0000	[thread overview]
Message-ID: <c4124f39-1ee9-8f34-e731-42315fee15f9@nvidia.com> (raw)
In-Reply-To: <012723a9-2e9c-c638-4944-fa560e1b0df0@arrikto.com>

Nikos,

>> [8] https://kernel.dk/io_uring.pdf
> 
> I would like to participate in the discussion too.
> 
> The dm-clone target would also benefit from copy offload, as it heavily
> employs dm-kcopyd. I have been exploring redesigning kcopyd in order to
> achieve increased IOPS in dm-clone and dm-snapshot for small copies over
> NVMe devices, but copy offload sounds even more promising, especially
> for larger copies happening in the background (as is the case with
> dm-clone's background hydration).
> 
> Thanks,
> Nikos

If you can document your findings here it will be great for me to
add it to the agenda.

-ck



  reply	other threads:[~2022-03-01 21:32 UTC|newest]

Thread overview: 133+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20220127071544uscas1p2f70f4d2509f3ebd574b7ed746d3fa551@uscas1p2.samsung.com>
2022-01-27  7:14 ` [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Chaitanya Kulkarni
2022-01-28 19:59   ` Adam Manzanares
2022-01-31 11:49     ` Johannes Thumshirn
2022-01-31 19:03   ` Bart Van Assche
2022-02-01  1:54   ` Luis Chamberlain
2022-02-01 10:21   ` Javier González
2022-02-01 18:31     ` [RFC PATCH 0/3] NVMe copy offload patches Mikulas Patocka
2022-02-01 18:32       ` [RFC PATCH 1/3] block: add copy offload support Mikulas Patocka
2022-02-01 19:18         ` Bart Van Assche
2022-02-03 18:50           ` Mikulas Patocka
2022-02-03 20:11             ` Keith Busch
2022-02-03 22:49             ` Bart Van Assche
2022-02-04 12:09               ` Mikulas Patocka
2022-02-04 13:34                 ` Jens Axboe
2022-02-02 16:21         ` Keith Busch
2022-02-02 16:40           ` Mikulas Patocka
2022-02-02 18:40           ` Knight, Frederick
2022-02-01 18:33       ` [RFC PATCH 2/3] nvme: " Mikulas Patocka
2022-02-01 19:18         ` Bart Van Assche
2022-02-01 19:25           ` Mikulas Patocka
2022-02-01 18:33       ` [RFC PATCH 3/3] nvme: add the "debug" host driver Mikulas Patocka
2022-02-02  6:01         ` Adam Manzanares
2022-02-03 16:06           ` Luis Chamberlain
2022-02-03 16:15             ` Christoph Hellwig
2022-02-03 19:34               ` Luis Chamberlain
2022-02-03 19:46                 ` Adam Manzanares
2022-02-03 20:57                 ` Mikulas Patocka
2022-02-03 22:52                   ` Adam Manzanares
2022-02-04  3:00                   ` Chaitanya Kulkarni
2022-02-04  3:05             ` Chaitanya Kulkarni
2022-02-02  8:00         ` Chaitanya Kulkarni
2022-02-02 12:38           ` Klaus Jensen
2022-02-03 15:38           ` Luis Chamberlain
2022-02-03 16:52             ` Keith Busch
2022-02-03 19:50               ` Adam Manzanares
2022-02-04  3:12                 ` Chaitanya Kulkarni
2022-02-04  6:28                   ` Damien Le Moal
2022-02-04  7:58                     ` Chaitanya Kulkarni
2022-02-04  8:24                       ` Javier González
2022-02-04  9:58                         ` Chaitanya Kulkarni
2022-02-04 11:34                           ` Javier González
2022-02-04 14:15                           ` Hannes Reinecke
2022-02-04 14:24                             ` Keith Busch
2022-02-04 16:01                             ` Christoph Hellwig
2022-02-04 19:41       ` [RFC PATCH 0/3] NVMe copy offload patches Nitesh Shetty
     [not found]         ` <CGME20220207141901epcas5p162ec2387815be7a1fd67ce0ab7082119@epcas5p1.samsung.com>
2022-02-07 14:13           ` [PATCH v2 00/10] Add Copy offload support Nitesh Shetty
     [not found]             ` <CGME20220207141908epcas5p4f270c89fc32434ea8b525fa973098231@epcas5p4.samsung.com>
2022-02-07 14:13               ` [PATCH v2 01/10] block: make bio_map_kern() non static Nitesh Shetty
     [not found]             ` <CGME20220207141913epcas5p4d41cb549b7cca1ede5c7a66bbd110da0@epcas5p4.samsung.com>
2022-02-07 14:13               ` [PATCH v2 02/10] block: Introduce queue limits for copy-offload support Nitesh Shetty
2022-02-08  7:01                 ` Damien Le Moal
2022-02-08 18:43                   ` Nitesh Shetty
     [not found]             ` <CGME20220207141918epcas5p4f9badc0c3f3f0913f091c850d2d3bd81@epcas5p4.samsung.com>
2022-02-07 14:13               ` [PATCH v2 03/10] block: Add copy offload support infrastructure Nitesh Shetty
2022-02-07 22:45                 ` kernel test robot
2022-02-07 23:26                 ` kernel test robot
2022-02-08  7:21                 ` Damien Le Moal
2022-02-09 10:22                   ` Nitesh Shetty
2022-02-09  7:48                 ` Dan Carpenter
2022-02-09 10:32                   ` Nitesh Shetty
     [not found]             ` <CGME20220207141924epcas5p26ad9cf5de732224f408aded12ed0a577@epcas5p2.samsung.com>
2022-02-07 14:13               ` [PATCH v2 04/10] block: Introduce a new ioctl for copy Nitesh Shetty
2022-02-09  3:39                 ` kernel test robot
     [not found]             ` <CGME20220207141930epcas5p2bcbff65f78ad1dede64648d73ddb3770@epcas5p2.samsung.com>
2022-02-07 14:13               ` [PATCH v2 05/10] block: add emulation " Nitesh Shetty
2022-02-08  3:20                 ` kernel test robot
2022-02-16 13:32                 ` Mikulas Patocka
2022-02-17 13:18                   ` Nitesh Shetty
     [not found]             ` <CGME20220207141937epcas5p2bd57ae35056c69b3e2f9ee2348d6af19@epcas5p2.samsung.com>
2022-02-07 14:13               ` [PATCH v2 06/10] nvme: add copy support Nitesh Shetty
2022-02-10  7:08                 ` kernel test robot
     [not found]             ` <CGME20220207141942epcas5p4bda894a5833513c9211dcecc7928a951@epcas5p4.samsung.com>
2022-02-07 14:13               ` [PATCH v2 07/10] nvmet: add copy command support for bdev and file ns Nitesh Shetty
2022-02-07 18:10                 ` kernel test robot
2022-02-07 20:12                 ` kernel test robot
2022-02-10  8:31                 ` kernel test robot
2022-02-11  7:52                 ` Dan Carpenter
     [not found]             ` <CGME20220207141948epcas5p4534f6bdc5a1e2e676d7d09c04f8b4a5b@epcas5p4.samsung.com>
2022-02-07 14:13               ` [PATCH v2 08/10] dm: Add support for copy offload Nitesh Shetty
2022-02-16 13:51                 ` Mikulas Patocka
2022-02-24 12:42                   ` Nitesh Shetty
2022-02-25  9:12                     ` Mikulas Patocka
     [not found]             ` <CGME20220207141953epcas5p32ccc3c0bbe642cea074edefcc32302a5@epcas5p3.samsung.com>
2022-02-07 14:13               ` [PATCH v2 09/10] dm: Enable copy offload for dm-linear target Nitesh Shetty
     [not found]             ` <CGME20220207141958epcas5p25f1cd06726217696d13c2dfbea010565@epcas5p2.samsung.com>
2022-02-07 14:13               ` [PATCH v2 10/10] dm kcopyd: use copy offload support Nitesh Shetty
2022-02-07  9:57     ` [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Nitesh Shetty
2022-02-02  5:57   ` Kanchan Joshi
2022-02-07 10:45   ` David Disseldorp
2022-03-01 17:34   ` Nikos Tsironis
2022-03-01 21:32     ` Chaitanya Kulkarni [this message]
2022-03-03 18:36       ` Nikos Tsironis
2022-03-08 20:48       ` Nikos Tsironis
2022-03-09  8:51         ` Mikulas Patocka
2022-03-09 15:49           ` Nikos Tsironis
     [not found] <CGME20230113094723epcas5p2f6f81ca1ad85f4b26829b87f8ec301ce@epcas5p2.samsung.com>
2023-01-13  9:46 ` Nitesh Shetty
2021-05-11  0:15 Chaitanya Kulkarni
2021-05-11 21:15 ` Knight, Frederick
2021-05-12  2:21 ` Bart Van Assche
     [not found] ` <CGME20210512071321eucas1p2ca2253e90449108b9f3e4689bf8e0512@eucas1p2.samsung.com>
2021-05-12  7:13   ` Javier González
2021-05-12  7:30 ` Johannes Thumshirn
     [not found]   ` <CGME20210928191342eucas1p23448dcd51b23495fa67cdc017e77435c@eucas1p2.samsung.com>
2021-09-28 19:13     ` Javier González
2021-09-29  6:44       ` Johannes Thumshirn
2021-09-30  9:43       ` Chaitanya Kulkarni
2021-09-30  9:53         ` Javier González
2021-10-06 10:01         ` Javier González
2021-10-13  8:35           ` Javier González
2021-09-30 16:20       ` Bart Van Assche
2021-10-06 10:05         ` Javier González
2021-10-06 17:33           ` Bart Van Assche
2021-10-08  6:49             ` Javier González
2021-10-29  0:21               ` Chaitanya Kulkarni
2021-10-29  5:51                 ` Hannes Reinecke
2021-10-29  8:16                   ` Javier González
2021-10-29 16:15                   ` Bart Van Assche
2021-11-01 17:54                     ` Keith Busch
2021-10-29  8:14                 ` Javier González
2021-11-03 19:27                   ` Javier González
2021-11-16 13:43                     ` Javier González
2021-11-16 17:59                       ` Bart Van Assche
2021-11-17 12:53                         ` Javier González
2021-11-17 15:52                           ` Bart Van Assche
2021-11-19  7:38                             ` Javier González
2021-11-19 10:47                       ` Kanchan Joshi
2021-11-19 15:51                         ` Keith Busch
2021-11-19 16:21                         ` Bart Van Assche
2021-11-22  7:39                       ` Kanchan Joshi
2021-05-12 15:23 ` Hannes Reinecke
2021-05-12 15:45 ` Himanshu Madhani
2021-05-17 16:39 ` Kanchan Joshi
2021-05-18  0:15 ` Bart Van Assche
2021-06-11  6:03 ` Chaitanya Kulkarni
2021-06-11 15:35 ` Nikos Tsironis
     [not found] <CGME20200107181551epcas5p4f47eeafd807c28a26b4024245c4e00ab@epcas5p4.samsung.com>
2020-01-07 18:14 ` Chaitanya Kulkarni
2020-01-08 10:17   ` Javier González
2020-01-09  0:51     ` Logan Gunthorpe
2020-01-09  3:18   ` Bart Van Assche
2020-01-09  4:01     ` Chaitanya Kulkarni
2020-01-09  5:56     ` Damien Le Moal
2020-01-10  5:33     ` Martin K. Petersen
2020-01-24 14:23   ` Nikos Tsironis
2020-02-13  5:11   ` joshi.k
2020-02-13 13:09     ` Knight, Frederick

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