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md: raid0/linear: ensure device sizes are rounded to chunk size.

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This is currently ensured by common code, but it is more reliable to
ensure it where it is needed in personality code.
All the other personalities that care already round the size to
the chunk_size.  raid0 and linear are the only hold-outs.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-06-18 08:48:55 +10:00
parent 1b57f13223
commit 13f2682b72
2 changed files with 12 additions and 0 deletions
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6
drivers/md/linear.c
View file

@ -135,6 +135,7 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
list_for_each_entry(rdev, &mddev->disks, same_set) {
int j = rdev->raid_disk;
dev_info_t *disk = conf->disks + j;
sector_t sectors;
if (j < 0 || j >= raid_disks || disk->rdev) {
printk("linear: disk numbering problem. Aborting!\n");
@ -142,6 +143,11 @@ static linear_conf_t *linear_conf(mddev_t *mddev, int raid_disks)
}
disk->rdev = rdev;
if (mddev->chunk_sectors) {
sectors = rdev->sectors;
sector_div(sectors, mddev->chunk_sectors);
rdev->sectors = sectors * mddev->chunk_sectors;
}
blk_queue_stack_limits(mddev->queue,
rdev->bdev->bd_disk->queue);

6
drivers/md/raid0.c
View file

@ -100,6 +100,12 @@ static int create_strip_zones(mddev_t *mddev)
printk(KERN_INFO "raid0: looking at %s\n",
bdevname(rdev1->bdev,b));
c = 0;
/* round size to chunk_size */
sectors = rdev1->sectors;
sector_div(sectors, mddev->chunk_sectors);
rdev1->sectors = sectors * mddev->chunk_sectors;
list_for_each_entry(rdev2, &mddev->disks, same_set) {
printk(KERN_INFO "raid0: comparing %s(%llu)",
bdevname(rdev1->bdev,b),