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authorGuoqing Jiang <gqjiang@suse.com>2016-05-02 11:33:13 -0400
committerShaohua Li <shli@fb.com>2016-05-04 12:39:35 -0700
commitab5a98b132fd1a08ca35e95498fb45f4a8f3b0c4 (patch)
tree727c304bc6cffb0efcfab886411beac01ae65c8e /drivers/md
parent1535212c542285e430d44a75bfc0a99df610f598 (diff)
downloadlinux-ab5a98b132fd1a08ca35e95498fb45f4a8f3b0c4.tar.bz2
md-cluster: change array_sectors and update size are not supported
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/md.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index dd83a50d892c..8cc4bbcf9bf8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -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