From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: Christoph Hellwig <hch@infradead.org>, Qu Wenruo <wqu@suse.com>
Cc: linux-btrfs@vger.kernel.org, David Sterba <dsterba@suse.com>
Subject: Re: [PATCH v7 03/13] btrfs: introduce a new helper to submit read bio for scrub
Date: Thu, 30 Mar 2023 14:43:02 +0800 [thread overview]
Message-ID: <152b4cb0-db59-24d5-b7ee-4ecc57480fbc@gmx.com> (raw)
In-Reply-To: <ZCTKvcEccAreV+6g@infradead.org>
On 2023/3/30 07:33, Christoph Hellwig wrote:
> On Wed, Mar 29, 2023 at 07:56:10AM +0800, Qu Wenruo wrote:
>> The new helper, btrfs_submit_scrub_read(), would be mostly a subset of
>> btrfs_submit_bio(), with the following limitations:
>>
>> - Only supports read
>> - @mirror_num must be > 0
>> - No read-time repair nor checksum verification
>> - The @bbio must not cross stripe boundary
>>
>> This would provide the basis for unified read repair for scrub, as we no
>> longer needs to handle RAID56 recovery all by scrub, and RAID56 data
>> stripes scrub can share the same code of read and repair.
>>
>> The repair part would be the same as non-RAID56, as we only need to try
>> the next mirror.
>
> Didn't we just agree that we do not need another magic helper?
I have changed the code in github repo so the read path just goes
btrfs_submit_bio().
The patch adding bbio::fs_info and adds all the extra skips if
bbio->inode is NULL:
https://github.com/adam900710/linux/commit/23c5a1bf8ce98f205de574a15a0eb0518e56e80c
Mind to give it a preview?
Thanks,
Qu
next prev parent reply other threads:[~2023-03-30 6:43 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-28 23:56 [PATCH v7 00/13] btrfs: scrub: use a more reader friendly code to implement scrub_simple_mirror() Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 01/13] btrfs: scrub: use dedicated super block verification function to scrub one super block Qu Wenruo
2023-03-29 0:29 ` Anand Jain
2023-03-29 9:20 ` Johannes Thumshirn
2023-03-29 9:53 ` Qu Wenruo
2023-03-29 23:25 ` Christoph Hellwig
2023-03-28 23:56 ` [PATCH v7 02/13] btrfs: introduce a new allocator for scrub specific btrfs_bio Qu Wenruo
2023-03-29 23:32 ` Christoph Hellwig
2023-03-29 23:39 ` Qu Wenruo
2023-03-29 23:47 ` Christoph Hellwig
2023-03-29 23:51 ` Qu Wenruo
2023-03-29 23:54 ` Christoph Hellwig
2023-03-28 23:56 ` [PATCH v7 03/13] btrfs: introduce a new helper to submit read bio for scrub Qu Wenruo
2023-03-29 23:33 ` Christoph Hellwig
2023-03-29 23:41 ` Qu Wenruo
2023-03-30 6:43 ` Qu Wenruo [this message]
2023-03-30 21:50 ` Christoph Hellwig
2023-03-28 23:56 ` [PATCH v7 04/13] btrfs: introduce a new helper to submit write " Qu Wenruo
2023-03-29 23:33 ` Christoph Hellwig
2023-03-30 6:47 ` Qu Wenruo
2023-03-30 22:13 ` Christoph Hellwig
2023-03-31 0:48 ` Qu Wenruo
2023-03-31 0:56 ` Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 05/13] btrfs: scrub: introduce the structure for new BTRFS_STRIPE_LEN based interface Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 06/13] btrfs: scrub: introduce a helper to find and fill the sector info for a scrub_stripe Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 07/13] btrfs: scrub: introduce a helper to verify one metadata Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 08/13] btrfs: scrub: introduce a helper to verify one scrub_stripe Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 09/13] btrfs: scrub: introduce the main read repair worker for scrub_stripe Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 10/13] btrfs: scrub: introduce a writeback helper " Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 11/13] btrfs: scrub: introduce error reporting functionality " Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 12/13] btrfs: scrub: introduce the helper to queue a stripe for scrub Qu Wenruo
2023-03-28 23:56 ` [PATCH v7 13/13] btrfs: scrub: switch scrub_simple_mirror() to scrub_stripe infrastructure Qu Wenruo
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