From: Naohiro Aota <Naohiro.Aota@wdc.com> To: "dsterba@suse.cz" <dsterba@suse.cz> Cc: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>, "David Sterba" <dsterba@suse.com>, "Chris Mason" <clm@fb.com>, "Josef Bacik" <josef@toxicpanda.com>, "Qu Wenruo" <wqu@suse.com>, "Nikolay Borisov" <nborisov@suse.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "Hannes Reinecke" <hare@suse.com>, "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>, "Damien Le Moal" <Damien.LeMoal@wdc.com>, "Matias Bjørling" <mb@lightnvm.io>, "Johannes Thumshirn" <jthumshirn@suse.de>, "Bart Van Assche" <bvanassche@acm.org> Subject: Re: [PATCH v2 00/19] btrfs zoned block device support Date: Thu, 13 Jun 2019 04:59:23 +0000 Message-ID: <SN6PR04MB5231E2F482B8D794950058FF8CEF0@SN6PR04MB5231.namprd04.prod.outlook.com> (raw) In-Reply-To: <20190612175138.GT3563@twin.jikos.cz> On 2019/06/13 2:50, David Sterba wrote: > On Fri, Jun 07, 2019 at 10:10:06PM +0900, Naohiro Aota wrote: >> btrfs zoned block device support >> >> This series adds zoned block device support to btrfs. > > The overall design sounds ok. > > I skimmed through the patches and the biggest task I see is how to make > the hmzoned adjustments and branches less visible, ie. there are too > many if (hmzoned) { do something } standing out. But that's merely a > matter of wrappers and maybe an abstraction here and there. Sure. I'll add some more abstractions in the next version. > How can I test the zoned devices backed by files (or regular disks)? I > searched for some concrete example eg. for qemu or dm-zoned, but closest > match was a text description in libzbc README that it's possible to > implement. All other howtos expect a real zoned device. You can use tcmu-runer [1] to create an emulated zoned device backed by a regular file. Here is a setup how-to: http://zonedstorage.io/projects/tcmu-runner/#compilation-and-installation [1] https://github.com/open-iscsi/tcmu-runner > Merge target is 5.3 or later, we'll see how things will go. I'm > expecting that we might need some time to get feedback about the > usability as there's no previous work widely used that we can build on > top of. >
next prev parent reply index Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-07 13:10 Naohiro Aota 2019-06-07 13:10 ` [PATCH 01/19] btrfs: introduce HMZONED feature flag Naohiro Aota 2019-06-07 13:10 ` [PATCH 02/19] btrfs: Get zone information of zoned block devices Naohiro Aota 2019-06-13 13:58 ` Josef Bacik 2019-06-18 6:04 ` Naohiro Aota 2019-06-13 13:58 ` Josef Bacik 2019-06-17 18:57 ` David Sterba 2019-06-18 6:42 ` Naohiro Aota 2019-06-27 15:11 ` David Sterba 2019-06-07 13:10 ` [PATCH 03/19] btrfs: Check and enable HMZONED mode Naohiro Aota 2019-06-13 13:57 ` Josef Bacik 2019-06-18 6:43 ` Naohiro Aota 2019-06-07 13:10 ` [PATCH 04/19] btrfs: disable fallocate in " Naohiro Aota 2019-06-07 13:10 ` [PATCH 05/19] btrfs: disable direct IO " Naohiro Aota 2019-06-13 14:00 ` Josef Bacik 2019-06-18 8:17 ` Naohiro Aota 2019-06-07 13:10 ` [PATCH 06/19] btrfs: align dev extent allocation to zone boundary Naohiro Aota 2019-06-07 13:10 ` [PATCH 07/19] btrfs: do sequential extent allocation in HMZONED mode Naohiro Aota 2019-06-13 14:07 ` Josef Bacik 2019-06-18 8:28 ` Naohiro Aota 2019-06-18 13:37 ` Josef Bacik 2019-06-17 22:30 ` David Sterba 2019-06-18 8:49 ` Naohiro Aota 2019-06-27 15:28 ` David Sterba 2019-06-07 13:10 ` [PATCH 08/19] btrfs: make unmirroed BGs readonly only if we have at least one writable BG Naohiro Aota 2019-06-13 14:09 ` Josef Bacik 2019-06-18 7:42 ` Naohiro Aota 2019-06-18 13:35 ` Josef Bacik 2019-06-07 13:10 ` [PATCH 09/19] btrfs: limit super block locations in HMZONED mode Naohiro Aota 2019-06-13 14:12 ` Josef Bacik 2019-06-18 8:51 ` Naohiro Aota 2019-06-17 22:53 ` David Sterba 2019-06-18 9:01 ` Naohiro Aota 2019-06-27 15:35 ` David Sterba 2019-06-28 3:55 ` Anand Jain 2019-06-28 6:39 ` Naohiro Aota 2019-06-28 6:52 ` Anand Jain 2019-06-07 13:10 ` [PATCH 10/19] btrfs: rename btrfs_map_bio() Naohiro Aota 2019-06-07 13:10 ` [PATCH 11/19] btrfs: introduce submit buffer Naohiro Aota 2019-06-13 14:14 ` Josef Bacik 2019-06-17 3:16 ` Damien Le Moal 2019-06-18 0:00 ` David Sterba 2019-06-18 4:04 ` Damien Le Moal 2019-06-18 13:33 ` Josef Bacik 2019-06-19 10:32 ` Damien Le Moal 2019-06-07 13:10 ` [PATCH 12/19] btrfs: expire submit buffer on timeout Naohiro Aota 2019-06-13 14:15 ` Josef Bacik 2019-06-17 3:19 ` Damien Le Moal 2019-06-07 13:10 ` [PATCH 13/19] btrfs: avoid sync IO prioritization on checksum in HMZONED mode Naohiro Aota 2019-06-13 14:17 ` Josef Bacik 2019-06-07 13:10 ` [PATCH 14/19] btrfs: redirty released extent buffers in sequential BGs Naohiro Aota 2019-06-13 14:24 ` Josef Bacik 2019-06-18 9:09 ` Naohiro Aota 2019-06-07 13:10 ` [PATCH 15/19] btrfs: reset zones of unused block groups Naohiro Aota 2019-06-07 13:10 ` [PATCH 16/19] btrfs: wait existing extents before truncating Naohiro Aota 2019-06-13 14:25 ` Josef Bacik 2019-06-07 13:10 ` [PATCH 17/19] btrfs: shrink delayed allocation size in HMZONED mode Naohiro Aota 2019-06-13 14:27 ` Josef Bacik 2019-06-07 13:10 ` [PATCH 18/19] btrfs: support dev-replace " Naohiro Aota 2019-06-13 14:33 ` Josef Bacik 2019-06-18 9:14 ` Naohiro Aota 2019-06-07 13:10 ` [PATCH 19/19] btrfs: enable to mount HMZONED incompat flag Naohiro Aota 2019-06-07 13:17 ` [PATCH 01/12] btrfs-progs: build: Check zoned block device support Naohiro Aota 2019-06-07 13:17 ` [PATCH 02/12] btrfs-progs: utils: Introduce queue_param Naohiro Aota 2019-06-07 13:17 ` [PATCH 03/12] btrfs-progs: add new HMZONED feature flag Naohiro Aota 2019-06-07 13:17 ` [PATCH 04/12] btrfs-progs: Introduce zone block device helper functions Naohiro Aota 2019-06-07 13:17 ` [PATCH 05/12] btrfs-progs: load and check zone information Naohiro Aota 2019-06-07 13:17 ` [PATCH 06/12] btrfs-progs: avoid writing super block to sequential zones Naohiro Aota 2019-06-07 13:17 ` [PATCH 07/12] btrfs-progs: support discarding zoned device Naohiro Aota 2019-06-07 13:17 ` [PATCH 08/12] btrfs-progs: volume: align chunk allocation to zones Naohiro Aota 2019-06-07 13:17 ` [PATCH 09/12] btrfs-progs: do sequential allocation Naohiro Aota 2019-06-07 13:17 ` [PATCH 10/12] btrfs-progs: mkfs: Zoned block device support Naohiro Aota 2019-06-07 13:17 ` [PATCH 11/12] btrfs-progs: device-add: support HMZONED device Naohiro Aota 2019-06-07 13:17 ` [PATCH 12/12] btrfs-progs: introduce support for dev-place " Naohiro Aota 2019-06-12 17:51 ` [PATCH v2 00/19] btrfs zoned block device support David Sterba 2019-06-13 4:59 ` Naohiro Aota [this message] 2019-06-13 13:46 ` David Sterba 2019-06-14 2:07 ` Naohiro Aota 2019-06-17 2:44 ` Damien Le Moal
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