nv puts metatdata at the end of a device, so it's important that
dmraid and BIOS agree where the end of the device is. Later kernel
exports the BIOS as via sysfs and it's available as di->alt_sectors.
Use it if available.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
lib/format/ataraid/nv.c | 15 +++++++++++----
lib/format/ataraid/nv.h | 2 +-
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/lib/format/ataraid/nv.c b/lib/format/ataraid/nv.c
index 893cc3a..bd4589c 100644
--- a/lib/format/ataraid/nv.c
+++ b/lib/format/ataraid/nv.c
@@ -216,9 +216,16 @@ static int setup_rd(struct lib_context *lc, struct raid_dev *rd,
static struct raid_dev *
nv_read(struct lib_context *lc, struct dev_info *di)
{
- return read_raid_dev(lc, di, NULL,
- sizeof(struct nv), NV_CONFIGOFFSET,
- to_cpu, is_nv, NULL, setup_rd, handler);
+ uint64_t sectors = di->alt_sectors ? di->alt_sectors : di->sectors;
+ struct raid_dev *rd;
+
+ rd = read_raid_dev(lc, di, NULL, sizeof(struct nv),
+ NV_CONFIGOFFSET(sectors),
+ to_cpu, is_nv, NULL, setup_rd, handler);
+ if (rd && di->alt_sectors)
+ log_notice(lc, "%s: using BIOS sectors %"PRIu64,
+ di->path, di->alt_sectors);
+ return rd;
}
/* Write private RAID metadata to device */
@@ -427,7 +434,7 @@ setup_rd(struct lib_context *lc, struct raid_dev *rd,
if (!(rd->meta_areas = alloc_meta_areas(lc, rd, handler, 1)))
return 0;
- rd->meta_areas->offset = NV_CONFIGOFFSET >> 9;
+ rd->meta_areas->offset = info->u64 >> 9;
rd->meta_areas->size = sizeof(*nv);
rd->meta_areas->area = (void *) nv;
diff --git a/lib/format/ataraid/nv.h b/lib/format/ataraid/nv.h
index 020900c..cca32da 100644
--- a/lib/format/ataraid/nv.h
+++ b/lib/format/ataraid/nv.h
@@ -23,7 +23,7 @@
#include <stdint.h>
-#define NV_CONFIGOFFSET ((di->sectors - 2) << 9)
+#define NV_CONFIGOFFSET(sects) (((sects) - 2) << 9)
#define NV_DATAOFFSET 0
#define NV_ID_LENGTH 8
--
1.6.0.2
--
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