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md-cluster: change array_sectors and update size are not supported

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Currently, some features are not supported yet,
such as change array_sectors and update size, so
return EINVAL for them and listed it in document.

Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
Guoqing Jiang
2016-05-02 11:33:13 -04:00
committed by Shaohua Li
parent 1535212c54
commit ab5a98b132
2 changed files with 14 additions and 0 deletions
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8
drivers/md/md.c
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@@ -4817,6 +4817,10 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
if (err)
return err;
/* cluster raid doesn't support change array_sectors */
if (mddev_is_clustered(mddev))
return -EINVAL;
if (strncmp(buf, "default", 7) == 0) {
if (mddev->pers)
sectors = mddev->pers->size(mddev, 0, 0);
@@ -6438,6 +6442,10 @@ static int update_size(struct mddev *mddev, sector_t num_sectors)
int rv;
int fit = (num_sectors == 0);
/* cluster raid doesn't support update size */
if (mddev_is_clustered(mddev))
return -EINVAL;
if (mddev->pers->resize == NULL)
return -EINVAL;
/* The "num_sectors" is the number of sectors of each device that