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dm raid: move _get_reshape_sectors() as prerequisite to fixing reshape size issues

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rs_set_dev_and_array_sectors() needs this function to
calculate device and array size properly in case leg data
devices have out-of-place reshape space allocated.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
This commit is contained in:
Heinz Mauelshagen 2024-07-09 13:56:12 +02:00 committed by Mikulas Patocka
parent 6a6c56130a
commit 453496b899
1 changed files with 17 additions and 17 deletions
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34
drivers/md/dm-raid.c
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@ -1626,6 +1626,23 @@ static int _check_data_dev_sectors(struct raid_set *rs)
return 0;
}
/* Get reshape sectors from data_offsets or raid set */
static sector_t _get_reshape_sectors(struct raid_set *rs)
{
struct md_rdev *rdev;
sector_t reshape_sectors = 0;
rdev_for_each(rdev, &rs->md)
if (!test_bit(Journal, &rdev->flags)) {
reshape_sectors = (rdev->data_offset > rdev->new_data_offset) ?
rdev->data_offset - rdev->new_data_offset :
rdev->new_data_offset - rdev->data_offset;
break;
}
return max(reshape_sectors, (sector_t) rs->data_offset);
}
/* Calculate the sectors per device and per array used for @rs */
static int rs_set_dev_and_array_sectors(struct raid_set *rs, sector_t sectors, bool use_mddev)
{
@ -2811,23 +2828,6 @@ static int rs_prepare_reshape(struct raid_set *rs)
return 0;
}
/* Get reshape sectors from data_offsets or raid set */
static sector_t _get_reshape_sectors(struct raid_set *rs)
{
struct md_rdev *rdev;
sector_t reshape_sectors = 0;
rdev_for_each(rdev, &rs->md)
if (!test_bit(Journal, &rdev->flags)) {
reshape_sectors = (rdev->data_offset > rdev->new_data_offset) ?
rdev->data_offset - rdev->new_data_offset :
rdev->new_data_offset - rdev->data_offset;
break;
}
return max(reshape_sectors, (sector_t) rs->data_offset);
}
/*
* Reshape:
* - change raid layout