From: Anand Jain <anand.jain@oracle.com>
To: Naohiro Aota <naohiro.aota@wdc.com>
Cc: linux-btrfs@vger.kernel.org, dsterba@suse.com, 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>
Subject: Re: [PATCH v10 12/41] btrfs: implement zoned chunk allocator
Date: Wed, 25 Nov 2020 15:17:42 +0800 [thread overview]
Message-ID: <c4e78093-0518-49b2-5728-79d68dc87dc5@oracle.com> (raw)
In-Reply-To: <20201125015740.conrettvmrgwebus@naota.dhcp.fujisawa.hgst.com>
On 25/11/20 9:57 am, Naohiro Aota wrote:
> On Tue, Nov 24, 2020 at 07:36:18PM +0800, Anand Jain wrote:
>> On 10/11/20 7:26 pm, Naohiro Aota wrote:
>>> This commit implements a zoned chunk/dev_extent allocator. The zoned
>>> allocator aligns the device extents to zone boundaries, so that a zone
>>> reset affects only the device extent and does not change the state of
>>> blocks in the neighbor device extents.
>>>
>>> Also, it checks that a region allocation is not overlapping any of the
>>> super block zones, and ensures the region is empty.
>>>
>>> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
>>
>> Looks good.
>>
>> Chunks and stripes are aligned to the zone_size. I guess zone_size won't
>> change after the block device has been formatted with it? For testing,
>> what if the device image is dumped onto another zoned device with a
>> different zone_size?
>
> Zone size is a drive characteristic, so it never change on the same device.
>
> Dump/restore on another device with a different zone_size should be banned,
> because we cannot ensure device extents are aligned to zone boundaries.
Fair enough. Do we have any checks to fail such mount? Sorry if I have
missed it somewhere in the patch?
Thanks.
next prev parent reply other threads:[~2020-11-25 7:20 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 11:26 [PATCH v10 00/41] btrfs: zoned block device support Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 01/41] block: add bio_add_zone_append_page Naohiro Aota
2020-11-10 17:20 ` Christoph Hellwig
2020-11-11 7:20 ` Johannes Thumshirn
2020-11-10 11:26 ` [PATCH v10 02/41] iomap: support REQ_OP_ZONE_APPEND Naohiro Aota
2020-11-10 17:25 ` Christoph Hellwig
2020-11-10 18:55 ` Darrick J. Wong
2020-11-10 19:01 ` Darrick J. Wong
2020-11-24 11:29 ` Christoph Hellwig
2020-11-30 18:11 ` Darrick J. Wong
2020-12-01 10:16 ` Johannes Thumshirn
2020-12-09 9:31 ` Christoph Hellwig
2020-12-09 10:08 ` Johannes Thumshirn
2020-12-09 10:10 ` hch
2020-12-09 10:16 ` Johannes Thumshirn
2020-12-09 13:38 ` Johannes Thumshirn
2020-12-11 7:26 ` Johannes Thumshirn
2020-12-11 21:24 ` Chaitanya Kulkarni
2020-12-12 10:22 ` Johannes Thumshirn
2020-11-10 11:26 ` [PATCH v10 03/41] btrfs: introduce ZONED feature flag Naohiro Aota
2020-11-19 21:31 ` David Sterba
2020-11-10 11:26 ` [PATCH v10 04/41] btrfs: get zone information of zoned block devices Naohiro Aota
2020-11-12 6:57 ` Anand Jain
2020-11-12 7:35 ` Johannes Thumshirn
2020-11-12 7:44 ` Damien Le Moal
2020-11-12 9:44 ` Anand Jain
2020-11-13 21:34 ` David Sterba
2020-11-12 9:39 ` Johannes Thumshirn
2020-11-12 12:57 ` Naohiro Aota
2020-11-18 11:17 ` Anand Jain
2020-11-30 11:16 ` Anand Jain
2020-11-25 21:47 ` David Sterba
2020-11-25 22:07 ` David Sterba
2020-11-25 23:50 ` Damien Le Moal
2020-11-26 14:11 ` David Sterba
2020-11-25 22:16 ` David Sterba
2020-11-10 11:26 ` [PATCH v10 05/41] btrfs: check and enable ZONED mode Naohiro Aota
2020-11-18 11:29 ` Anand Jain
2020-11-27 18:44 ` David Sterba
2020-11-30 12:12 ` Anand Jain
2020-11-30 13:15 ` Damien Le Moal
2020-12-01 2:19 ` Anand Jain
2020-12-01 2:29 ` Damien Le Moal
2020-12-01 5:53 ` Anand Jain
2020-12-01 6:09 ` Damien Le Moal
2020-12-01 7:12 ` Anand Jain
2020-12-01 10:45 ` Graham Cobb
2020-12-01 11:03 ` Damien Le Moal
2020-12-01 11:11 ` hch
2020-12-01 11:27 ` Damien Le Moal
2020-11-10 11:26 ` [PATCH v10 06/41] btrfs: introduce max_zone_append_size Naohiro Aota
2020-11-19 9:23 ` Anand Jain
2020-11-27 18:47 ` David Sterba
2020-11-10 11:26 ` [PATCH v10 07/41] btrfs: disallow space_cache in ZONED mode Naohiro Aota
2020-11-19 10:42 ` Anand Jain
2020-11-20 4:08 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 08/41] btrfs: disallow NODATACOW " Naohiro Aota
2020-11-20 4:17 ` Anand Jain
2020-11-23 17:21 ` David Sterba
2020-11-24 3:29 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 09/41] btrfs: disable fallocate " Naohiro Aota
2020-11-20 4:28 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 10/41] btrfs: disallow mixed-bg " Naohiro Aota
2020-11-20 4:32 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 11/41] btrfs: implement log-structured superblock for " Naohiro Aota
2020-11-23 17:46 ` David Sterba
2020-11-24 9:30 ` Johannes Thumshirn
2020-11-24 6:46 ` Anand Jain
2020-11-24 7:16 ` Hannes Reinecke
2020-11-10 11:26 ` [PATCH v10 12/41] btrfs: implement zoned chunk allocator Naohiro Aota
2020-11-24 11:36 ` Anand Jain
2020-11-25 1:57 ` Naohiro Aota
2020-11-25 7:17 ` Anand Jain [this message]
2020-11-25 11:48 ` Naohiro Aota
2020-11-25 9:59 ` Graham Cobb
2020-11-25 11:50 ` Naohiro Aota
2020-12-09 5:27 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 13/41] btrfs: verify device extent is aligned to zone Naohiro Aota
2020-11-27 6:27 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 14/41] btrfs: load zone's alloction offset Naohiro Aota
2020-12-08 9:54 ` Anand Jain
2020-11-10 11:26 ` [PATCH v10 15/41] btrfs: emulate write pointer for conventional zones Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 16/41] btrfs: track unusable bytes for zones Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 17/41] btrfs: do sequential extent allocation in ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 18/41] btrfs: reset zones of unused block groups Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 19/41] btrfs: redirty released extent buffers in ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 20/41] btrfs: extract page adding function Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 21/41] btrfs: use bio_add_zone_append_page for zoned btrfs Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 22/41] btrfs: handle REQ_OP_ZONE_APPEND as writing Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 23/41] btrfs: split ordered extent when bio is sent Naohiro Aota
2020-11-11 2:01 ` kernel test robot
2020-11-11 2:26 ` kernel test robot
2020-11-11 3:46 ` kernel test robot
2020-11-11 3:46 ` [RFC PATCH] btrfs: extract_ordered_extent() can be static kernel test robot
2020-11-11 4:12 ` [PATCH v10.1 23/41] btrfs: split ordered extent when bio is sent Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 24/41] btrfs: extend btrfs_rmap_block for specifying a device Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 25/41] btrfs: use ZONE_APPEND write for ZONED btrfs Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 26/41] btrfs: enable zone append writing for direct IO Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 27/41] btrfs: introduce dedicated data write path for ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 28/41] btrfs: serialize meta IOs on " Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 29/41] btrfs: wait existing extents before truncating Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 30/41] btrfs: avoid async metadata checksum on ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 31/41] btrfs: mark block groups to copy for device-replace Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 32/41] btrfs: implement cloning for ZONED device-replace Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 33/41] btrfs: implement copying " Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 34/41] btrfs: support dev-replace in ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 35/41] btrfs: enable relocation " Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 36/41] btrfs: relocate block group to repair IO failure in ZONED Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 37/41] btrfs: split alloc_log_tree() Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 38/41] btrfs: extend zoned allocator to use dedicated tree-log block group Naohiro Aota
2020-11-11 4:58 ` [PATCH v10.1 " Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 39/41] btrfs: serialize log transaction on ZONED mode Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 40/41] btrfs: reorder log node allocation Naohiro Aota
2020-11-10 11:26 ` [PATCH v10 41/41] btrfs: enable to mount ZONED incompat flag Naohiro Aota
2020-11-10 14:00 ` [PATCH v10 00/41] btrfs: zoned block device support Anand Jain
2020-11-11 5:07 ` Naohiro Aota
2020-11-27 19:28 ` David Sterba
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