On Thu, 4 Jul 2024, Li Dong wrote:
> For zone block devices, device_area_is_invalid may return an incorrect
> value.
>
> Failure log:
> [ 19.337657]: device-mapper: table: 254:56: len=836960256 not aligned to
> h/w zone size 3244032 of sde
> [ 19.337665]: device-mapper: core: Cannot calculate initial queue limits
> [ 19.337667]: device-mapper: ioctl: unable to set up device queue for
> new table.
>
> Actually, the device's zone length is aligned to the zonesize.
>
> Fixes: 5dea271b6d87 ("dm table: pass correct dev area size to device_area_is_valid")
> Signed-off-by: Li Dong <lidong@xxxxxxxx>
> ---
> drivers/md/dm-table.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
> index 33b7a1844ed4..0bddae0bee3c 100644
> --- a/drivers/md/dm-table.c
> +++ b/drivers/md/dm-table.c
> @@ -257,7 +257,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
> if (bdev_is_zoned(bdev)) {
> unsigned int zone_sectors = bdev_zone_sectors(bdev);
>
> - if (start & (zone_sectors - 1)) {
> + if (start % zone_sectors) {
> DMERR("%s: start=%llu not aligned to h/w zone size %u of %pg",
> dm_device_name(ti->table->md),
> (unsigned long long)start,
> @@ -274,7 +274,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
> * devices do not end up with a smaller zone in the middle of
> * the sector range.
> */
> - if (len & (zone_sectors - 1)) {
> + if (len % zone_sectors) {
> DMERR("%s: len=%llu not aligned to h/w zone size %u of %pg",
> dm_device_name(ti->table->md),
> (unsigned long long)len,
> --
> 2.31.1.windows.1
Hi
This probably won't compile on 32-bit architectures because the operators
for 64-bit divide and modulo don't work there.
Please, rework the patch using dm_sector_div64.
Mikulas
