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    Subject[PATCH 4.19 118/321] btrfs: fix ncopies raid_attr for RAID56
    Date
    From: Hans van Kranenburg <hans.van.kranenburg@mendix.com>

    [ Upstream commit da612e31aee51bd13231c78a47c714b543bd3ad8 ]

    RAID5 and RAID6 profile store one copy of the data, not 2 or 3. These
    values are not yet used anywhere so there's no change.

    Reviewed-by: Nikolay Borisov <nborisov@suse.com>
    Signed-off-by: Hans van Kranenburg <hans.van.kranenburg@mendix.com>
    Signed-off-by: David Sterba <dsterba@suse.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    fs/btrfs/volumes.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
    index f84c18e86c816..5bbcdcff68a9e 100644
    --- a/fs/btrfs/volumes.c
    +++ b/fs/btrfs/volumes.c
    @@ -96,7 +96,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
    .devs_min = 2,
    .tolerated_failures = 1,
    .devs_increment = 1,
    - .ncopies = 2,
    + .ncopies = 1,
    .raid_name = "raid5",
    .bg_flag = BTRFS_BLOCK_GROUP_RAID5,
    .mindev_error = BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
    @@ -108,7 +108,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
    .devs_min = 3,
    .tolerated_failures = 2,
    .devs_increment = 1,
    - .ncopies = 3,
    + .ncopies = 1,
    .raid_name = "raid6",
    .bg_flag = BTRFS_BLOCK_GROUP_RAID6,
    .mindev_error = BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
    --
    2.20.1


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