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md: fix update super 1.0 on rdev size change

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commit 55df1ce0d4e086e05a8ab20619c73c729350f965 upstream.

The superblock of version 1.0 doesn't get moved to the new position on a
device size change. This leads to a rdev without a superblock on a known
position, the raid can't be re-assembled.

The line was removed by mistake and is re-added by this patch.

Fixes: d9c0fa509e ("md: fix max sectors calculation for super 1.0")
Cc: stable@vger.kernel.org
Signed-off-by: Markus Hochholdinger <markus@hochholdinger.net>
Reviewed-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Markus Hochholdinger
2021-11-16 10:21:35 +00:00
committed by Greg Kroah-Hartman
parent caf9b352dc
commit 8b4264c27b
1 changed files with 1 additions and 0 deletions
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drivers/md/md.c
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@@ -2252,6 +2252,7 @@ super_1_rdev_size_change(struct md_rdev *rdev, sector_t num_sectors)
if (!num_sectors || num_sectors > max_sectors) if (!num_sectors || num_sectors > max_sectors)
num_sectors = max_sectors; num_sectors = max_sectors;
rdev->sb_start = sb_start;
} }
sb = page_address(rdev->sb_page); sb = page_address(rdev->sb_page);
sb->data_size = cpu_to_le64(num_sectors); sb->data_size = cpu_to_le64(num_sectors);