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From: Josef Bacik <josef@toxicpanda.com>
To: Naohiro Aota <naohiro.aota@wdc.com>,
	linux-btrfs@vger.kernel.org, dsterba@suse.com
Cc: hare@suse.com, linux-fsdevel@vger.kernel.org,
	Jens Axboe <axboe@kernel.dk>,
	Christoph Hellwig <hch@infradead.org>,
	"Darrick J. Wong" <darrick.wong@oracle.com>,
	Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: Re: [PATCH v11 38/40] btrfs: extend zoned allocator to use dedicated tree-log block group
Date: Tue, 12 Jan 2021 14:48:18 -0500	[thread overview]
Message-ID: <824b1581-973c-42aa-7ff6-0d36cb4e5249@toxicpanda.com> (raw)
In-Reply-To: <920bc20e9b4b1bed3802c3dca6f9fa3c72850804.1608608848.git.naohiro.aota@wdc.com>

On 12/21/20 10:49 PM, Naohiro Aota wrote:
> This is the 1/3 patch to enable tree log on ZONED mode.
> 
> The tree-log feature does not work on ZONED mode as is. Blocks for a
> tree-log tree are allocated mixed with other metadata blocks, and btrfs
> writes and syncs the tree-log blocks to devices at the time of fsync(),
> which is different timing from a global transaction commit. As a result,
> both writing tree-log blocks and writing other metadata blocks become
> non-sequential writes that ZONED mode must avoid.
> 
> We can introduce a dedicated block group for tree-log blocks so that
> tree-log blocks and other metadata blocks can be separated write streams.
> As a result, each write stream can now be written to devices separately.
> "fs_info->treelog_bg" tracks the dedicated block group and btrfs assign
> "treelog_bg" on-demand on tree-log block allocation time.
> 
> This commit extends the zoned block allocator to use the block group.
> 
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Tho if you have to touch this thing again I'd like to see a helper for clearing 
the fs_info->treelog_bg, since that code snippet is duplicated, but it's not a 
big deal.  Thanks,

Josef

  reply	other threads:[~2021-01-12 19:49 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-22  3:48 [PATCH v11 00/40] btrfs: zoned block device support Naohiro Aota
2020-12-22  3:48 ` [PATCH v11 01/40] block: add bio_add_zone_append_page Naohiro Aota
2020-12-22  3:48   ` [PATCH v11 02/40] iomap: support REQ_OP_ZONE_APPEND Naohiro Aota
2021-01-04 22:30     ` Darrick J. Wong
2021-01-13  9:34       ` Johannes Thumshirn
2020-12-22  3:48   ` [PATCH v11 03/40] btrfs: defer loading zone info after opening trees Naohiro Aota
2021-01-11 19:16     ` Josef Bacik
2020-12-22  3:48   ` [PATCH v11 04/40] btrfs: change superblock location on conventional zone Naohiro Aota
2021-01-11 19:47     ` Josef Bacik
2021-01-14 15:10       ` Naohiro Aota
2020-12-22  3:48   ` [PATCH v11 05/40] btrfs: release path before calling into btrfs_load_block_group_zone_info Naohiro Aota
2021-01-11 20:01     ` Josef Bacik
2021-01-12  8:05       ` Johannes Thumshirn
2020-12-22  3:48   ` [PATCH v11 06/40] btrfs: do not load fs_info->zoned from incompat flag Naohiro Aota
2021-01-11 20:08     ` Josef Bacik
2021-01-12  8:00       ` Johannes Thumshirn
2020-12-22  3:49   ` [PATCH v11 07/40] btrfs: disallow fitrim in ZONED mode Naohiro Aota
2021-01-11 20:12     ` Josef Bacik
2021-01-12 10:19       ` Johannes Thumshirn
2020-12-22  3:49   ` [PATCH v11 08/40] btrfs: emulated zoned mode on non-zoned devices Naohiro Aota
2021-01-11 20:54     ` Josef Bacik
2021-01-13 17:58     ` David Sterba
2021-01-13 18:23       ` Johannes Thumshirn
2020-12-22  3:49   ` [PATCH v11 09/40] btrfs: implement zoned chunk allocator Naohiro Aota
2021-01-11 21:24     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 10/40] btrfs: verify device extent is aligned to zone Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 11/40] btrfs: load zone's allocation offset Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 12/40] btrfs: calculate allocation offset for conventional zones Naohiro Aota
2021-01-12 15:12     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 13/40] btrfs: track unusable bytes for zones Naohiro Aota
2021-01-12 15:45     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 14/40] btrfs: do sequential extent allocation in ZONED mode Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 15/40] btrfs: redirty released extent buffers " Naohiro Aota
2021-01-12 15:51     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 16/40] btrfs: advance allocation pointer after tree log node Naohiro Aota
2021-01-12 15:52     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 17/40] btrfs: enable to mount ZONED incompat flag Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 18/40] btrfs: reset zones of unused block groups Naohiro Aota
2021-01-12 15:54     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 19/40] btrfs: extract page adding function Naohiro Aota
2021-01-11 16:22     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 20/40] btrfs: use bio_add_zone_append_page for zoned btrfs Naohiro Aota
2021-01-12 15:55     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 21/40] btrfs: handle REQ_OP_ZONE_APPEND as writing Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 22/40] btrfs: split ordered extent when bio is sent Naohiro Aota
2021-01-12 15:59     ` Josef Bacik
2021-01-13 10:05       ` Johannes Thumshirn
2021-01-15  7:08     ` Su Yue
2020-12-22  3:49   ` [PATCH v11 23/40] btrfs: extend btrfs_rmap_block for specifying a device Naohiro Aota
2021-01-12 16:00     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 24/40] btrfs: cache if block-group is on a sequential zone Naohiro Aota
2021-01-12 16:01     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 25/40] btrfs: use ZONE_APPEND write for ZONED btrfs Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 26/40] btrfs: enable zone append writing for direct IO Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 27/40] btrfs: introduce dedicated data write path for ZONED mode Naohiro Aota
2021-01-12 19:24     ` Josef Bacik
2021-01-13 10:41       ` Naohiro Aota
2021-01-12 19:28     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 28/40] btrfs: serialize meta IOs on " Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 29/40] btrfs: wait existing extents before truncating Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 30/40] btrfs: avoid async metadata checksum on ZONED mode Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 31/40] btrfs: mark block groups to copy for device-replace Naohiro Aota
2021-01-12 19:30     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 32/40] btrfs: implement cloning for ZONED device-replace Naohiro Aota
2021-01-12 19:36     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 33/40] btrfs: implement copying " Naohiro Aota
2021-01-12 19:37     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 34/40] btrfs: support dev-replace in ZONED mode Naohiro Aota
2021-01-12 19:37     ` Josef Bacik
2021-01-12 19:40     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 35/40] btrfs: enable relocation " Naohiro Aota
2021-01-12 19:43     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 36/40] btrfs: relocate block group to repair IO failure in ZONED Naohiro Aota
2020-12-22  3:49   ` [PATCH v11 37/40] btrfs: split alloc_log_tree() Naohiro Aota
2021-01-12 19:44     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 38/40] btrfs: extend zoned allocator to use dedicated tree-log block group Naohiro Aota
2021-01-12 19:48     ` Josef Bacik [this message]
2020-12-22  3:49   ` [PATCH v11 39/40] btrfs: serialize log transaction on ZONED mode Naohiro Aota
2021-01-12 19:50     ` Josef Bacik
2020-12-22  3:49   ` [PATCH v11 40/40] btrfs: reorder log node allocation Naohiro Aota
2020-12-22 13:35   ` [PATCH v11 01/40] block: add bio_add_zone_append_page Christoph Hellwig
2021-01-12 13:48     ` Johannes Thumshirn
2020-12-22 13:38 ` [PATCH v11 00/40] btrfs: zoned block device support Christoph Hellwig
2021-01-11 10:17   ` Johannes Thumshirn
2021-01-12 10:23     ` hch
2021-01-12 10:26       ` Johannes Thumshirn

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