If cache support is enabled, don't allow resize/reshape in current
stage. In the future, we can flush all data from cache to raid before
resize/reshape and then allow resize/reshape.
Signed-off-by: Shaohua Li <shli@xxxxxx>
---
drivers/md/raid5.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 14bc5fd..1365316 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7173,6 +7173,10 @@ static int raid5_resize(struct mddev *mddev, sector_t sectors)
* worth it.
*/
sector_t newsize;
+ struct r5conf *conf = mddev->private;
+
+ if (conf->cache)
+ return -EINVAL;
sectors &= ~((sector_t)mddev->chunk_sectors - 1);
newsize = raid5_size(mddev, sectors, mddev->raid_disks);
if (mddev->external_size &&
@@ -7224,6 +7228,8 @@ static int check_reshape(struct mddev *mddev)
{
struct r5conf *conf = mddev->private;
+ if (conf->cache)
+ return -EINVAL;
if (mddev->delta_disks == 0 &&
mddev->new_layout == mddev->layout &&
mddev->new_chunk_sectors == mddev->chunk_sectors)
--
1.8.1
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