Normally the size is chosen as a multiple of the chunk size,
but if the size is explicitly chosen, it might not be.
So we force it.
Signed-off-by: Neil Brown <neilb@xxxxxxxxxxxxxxx>
----------- Diffstat output ------------
./drivers/md/raid5.c | 3 +++
./drivers/md/raid6main.c | 3 +++
2 files changed, 6 insertions(+)
diff ./drivers/md/raid5.c~current~ ./drivers/md/raid5.c
--- ./drivers/md/raid5.c~current~ 2004-05-28 15:48:33.000000000 +1000
+++ ./drivers/md/raid5.c 2004-05-28 15:48:55.000000000 +1000
@@ -1611,6 +1611,9 @@ static int run (mddev_t *mddev)
conf->algorithm = mddev->layout;
conf->max_nr_stripes = NR_STRIPES;
+ /* device size must be a multiple of chunk size */
+ mddev->size &= ~(mddev->chunk_size/1024 -1);
+
if (!conf->chunk_size || conf->chunk_size % 4) {
printk(KERN_ERR "raid5: invalid chunk size %d for %s\n",
conf->chunk_size, mdname(mddev));
diff ./drivers/md/raid6main.c~current~ ./drivers/md/raid6main.c
--- ./drivers/md/raid6main.c~current~ 2004-05-28 15:48:33.000000000 +1000
+++ ./drivers/md/raid6main.c 2004-05-28 15:48:55.000000000 +1000
@@ -1775,6 +1775,9 @@ static int run (mddev_t *mddev)
conf->algorithm = mddev->layout;
conf->max_nr_stripes = NR_STRIPES;
+ /* device size must be a multiple of chunk size */
+ mddev->size &= ~(mddev->chunk_size/1024 -1);
+
if (conf->raid_disks < 4) {
printk(KERN_ERR "raid6: not enough configured devices for %s (%d, minimum 4)\n",
mdname(mddev), conf->raid_disks);
-
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