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From: Nikolay Borisov <nborisov@suse.com>
To: Christoph Hellwig <hch@lst.de>, fstests@vger.kernel.org
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 1/9] btrfs: add a helpers for read repair testing
Date: Fri, 27 May 2022 14:22:28 +0300	[thread overview]
Message-ID: <ed54f57f-4547-8b04-b59f-85c78da4b36f@suse.com> (raw)
In-Reply-To: <20220524071838.715013-2-hch@lst.de>



On 24.05.22 г. 10:18 ч., Christoph Hellwig wrote:
> Add a few helpers to consolidate code for btrfs read repair testing:
> 
>   - _btrfs_get_first_logical() gets the btrfs logical address for the
>     first extent in a file
>   - _btrfs_get_device_path and _btrfs_get_physical use the
>     btrfs-map-logical tool to find the device path and physical address
>     for btrfs logical address for a specific mirror
>   - _btrfs_direct_read_on_mirror and _btrfs_buffered_read_on_mirror
>     read the data from a specific mirror
> 
> These will be used to consolidate the read repair tests and avoid
> duplication for new tests.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>   common/btrfs  | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++
>   common/config |  1 +
>   2 files changed, 76 insertions(+)
> 
> diff --git a/common/btrfs b/common/btrfs
> index ac597ca4..129a83f7 100644
> --- a/common/btrfs
> +++ b/common/btrfs
> @@ -505,3 +505,78 @@ _btrfs_metadump()
>   	$BTRFS_IMAGE_PROG "$device" "$dumpfile"
>   	[ -n "$DUMP_COMPRESSOR" ] && $DUMP_COMPRESSOR -f "$dumpfile" &> /dev/null
>   }
> +
> +# Return the btrfs logical address for the first block in a file
> +_btrfs_get_first_logical()
> +{
> +	local file=$1
> +	_require_command "$FILEFRAG_PROG" filefrag
> +
> +	${FILEFRAG_PROG} -v $SCRATCH_MNT/foobar >> $seqres.full

Likely you want to print the logical layout of the file for reference 
purposes? Then use $file instead of $SCRATCH_MNT/foobar

<snip>

  parent reply	other threads:[~2022-05-27 11:22 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-24  7:18 two more btrfs read repair tests v2 Christoph Hellwig
2022-05-24  7:18 ` [PATCH 1/9] btrfs: add a helpers for read repair testing Christoph Hellwig
2022-05-24 13:18   ` Qu Wenruo
2022-05-27 11:22   ` Nikolay Borisov [this message]
2022-05-27 13:33     ` Christoph Hellwig
2022-05-24  7:18 ` [PATCH 2/9] btrfs/140: use common read repair helpers Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 3/9] btrfs/141: " Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 4/9] btrfs/142: " Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 5/9] btrfs/143: " Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 6/9] btrfs/157: use _btrfs_get_first_logical Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 7/9] btrfs/215: " Christoph Hellwig
2022-05-24 13:21   ` Qu Wenruo
2022-05-24  7:18 ` [PATCH 8/9] btrfs: test repair with sectors corrupted in multiple mirrors Christoph Hellwig
2022-05-24 13:28   ` Qu Wenruo
2022-06-02 11:30   ` Filipe Manana
2022-06-02 12:07     ` Christoph Hellwig
2022-05-24  7:18 ` [PATCH 9/9] btrfs: test repair with corrupted sectors interleaved over " Christoph Hellwig
2022-05-24 13:30   ` Qu Wenruo

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