ore: Enable RAID5 mounts

44231e68 · Boaz Harrosh <[email protected]> · 2010-11-21 20:03:24 +02:00

Now that we support raid5 Enable it at mount. Raid6 will come next
raid4 is not demanded for so it will probably not be enabled.
(Until some one wants it)

NOTE: That mkfs.exofs had support for raid5/6 since long time
ago. (Making an empty raidX FS is just as easy as raid0 ;-} )

Signed-off-by: Boaz Harrosh <[email protected]>

Commit: 44231e686b2ba3b5702db867bb84e6d76b7cf2c7
Parents: dd296619

Changes

1 files changed · +11 −3

File	Status	Add	Del	Content
fs/exofs/ore.c	modified	+11	−3	View file

fs/exofs/ore.c

View file

diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index 08ee454..fcfa86a 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -49,9 +49,17 @@ int ore_verify_layout(unsigned total_comps, struct ore_layout *layout)
 {
 	u64 stripe_length;
 
-/* FIXME: Only raid0 is supported for now. */
-	if (layout->raid_algorithm != PNFS_OSD_RAID_0) {
-		ORE_ERR("Only RAID_0 for now\n");
+	switch (layout->raid_algorithm) {
+	case PNFS_OSD_RAID_0:
+		layout->parity = 0;
+		break;
+	case PNFS_OSD_RAID_5:
+		layout->parity = 1;
+		break;
+	case PNFS_OSD_RAID_PQ:
+	case PNFS_OSD_RAID_4:
+	default:
+		ORE_ERR("Only RAID_0/5 for now\n");
 		return -EINVAL;
 	}
 	if (0 != (layout->stripe_unit & ~PAGE_MASK)) {