[PATCH 23/31] mdadm: second_map enhancement for imsm_get_map()
am 09.11.2010 18:01:22 von adam.kwolekAllow map related operations for the given map: first of second.
For reshape specific functionality it is required to have an access
Until now, the active map was chosen according to the current volume status.
Signed-off-by: Maciej Trela
Signed-off-by: Adam Kwolek
---
mdadm/mdadm/super-intel.c | 64 ++++++++++++++++++++++++++-------------------
1 files changed, 37 insertions(+), 27 deletions(-)
diff --git a/mdadm/mdadm/super-intel.c b/mdadm/mdadm/super-intel.c index 98799a5..549f252 100644
--- a/mdadm/mdadm/super-intel.c
+++ b/mdadm/mdadm/super-intel.c
@@ -519,23 +519,33 @@ static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index)
return NULL;
}
-static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot)
+/*
+ * for second_map:
+ * == 0 get first map
+ * == 1 get second map
+ * == -1 than get map according to the current migr_state */ static
+__u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot, int
+second_map)
{
struct imsm_map *map;
- if (dev->vol.migr_state)
- map = get_imsm_map(dev, 1);
- else
- map = get_imsm_map(dev, 0);
+ if (second_map == -1) {
+ if (dev->vol.migr_state)
+ map = get_imsm_map(dev, 1);
+ else
+ map = get_imsm_map(dev, 0);
+ } else {
+ map = get_imsm_map(dev, second_map);
+ }
/* top byte identifies disk under rebuild */
return __le32_to_cpu(map->disk_ord_tbl[slot]);
}
#define ord_to_idx(ord) (((ord) << 8) >> 8) -static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot)
+static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot, int
+second_map)
{
- __u32 ord = get_imsm_ord_tbl_ent(dev, slot);
+ __u32 ord = get_imsm_ord_tbl_ent(dev, slot, second_map);
return ord_to_idx(ord);
}
@@ -712,13 +722,13 @@ static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx)
printf(" Members : %d\n", map->num_members);
printf(" Slots : [");
for (i = 0; i < map->num_members; i++) {
- ord = get_imsm_ord_tbl_ent(dev, i);
+ ord = get_imsm_ord_tbl_ent(dev, i, -1);
printf("%s", ord & IMSM_ORD_REBUILD ? "_" : "U");
}
printf("]\n");
slot = get_imsm_disk_slot(map, disk_idx);
if (slot >= 0) {
- ord = get_imsm_ord_tbl_ent(dev, slot);
+ ord = get_imsm_ord_tbl_ent(dev, slot, -1);
printf(" This Slot : %d%s\n", slot,
ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : "");
} else
@@ -1356,12 +1366,12 @@ static __u32 num_stripes_per_unit_rebuild(struct imsm_dev *dev)
return num_stripes_per_unit_resync(dev); }
-static __u8 imsm_num_data_members(struct imsm_dev *dev)
+static __u8 imsm_num_data_members(struct imsm_dev *dev, int second_map)
{
/* named 'imsm_' because raid0, raid1 and raid10
* counter-intuitively have the same number of data disks
*/
- struct imsm_map *map = get_imsm_map(dev, 0);
+ struct imsm_map *map = get_imsm_map(dev, second_map);
switch (get_imsm_raid_level(map)) {
case 0:
@@ -1444,7 +1454,7 @@ static __u64 blocks_per_migr_unit(struct imsm_dev *dev)
*/
stripes_per_unit = num_stripes_per_unit_resync(dev);
migr_chunk = migr_strip_blocks_resync(dev);
- disks = imsm_num_data_members(dev);
+ disks = imsm_num_data_members(dev, 0);
blocks_per_unit = stripes_per_unit * migr_chunk * disks;
stripe = __le32_to_cpu(map->blocks_per_strip) * disks;
segment = blocks_per_unit / stripe;
@@ -1675,7 +1685,7 @@ static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
* (catches single-degraded vs double-degraded)
*/
for (j = 0; j < map->num_members; j++) {
- __u32 ord = get_imsm_ord_tbl_ent(dev, i);
+ __u32 ord = get_imsm_ord_tbl_ent(dev, i, -1);
__u32 idx = ord_to_idx(ord);
if (!(ord & IMSM_ORD_REBUILD) &&
@@ -3383,7 +3393,7 @@ static int add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
/* Check the device has not already been added */
slot = get_imsm_disk_slot(map, dl->index);
if (slot >= 0 &&
- (get_imsm_ord_tbl_ent(dev, slot) & IMSM_ORD_REBUILD) == 0) {
+ (get_imsm_ord_tbl_ent(dev, slot, -1) & IMSM_ORD_REBUILD) == 0) {
fprintf(stderr, Name ": %s has been included in this array twice\n",
devname);
return 1;
@@ -3629,7 +3639,7 @@ static int create_array(struct supertype *st, int dev_idx)
imsm_copy_dev(&u->dev, dev);
inf = get_disk_info(u);
for (i = 0; i < map->num_members; i++) {
- int idx = get_imsm_disk_idx(dev, i);
+ int idx = get_imsm_disk_idx(dev, i, -1);
disk = get_imsm_disk(super, idx);
serialcpy(inf[i].serial, disk->serial); @@ -4503,8 +4513,8 @@ static struct mdinfo *container_content_imsm(struct supertype *st)
__u32 ord;
skip = 0;
- idx = get_imsm_disk_idx(dev, slot);
- ord = get_imsm_ord_tbl_ent(dev, slot);
+ idx = get_imsm_disk_idx(dev, slot, 0);
+ ord = get_imsm_ord_tbl_ent(dev, slot, 0);
for (d = super->disks; d ; d = d->next)
if (d->index == idx)
break;
@@ -4599,7 +4609,7 @@ static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev,
int insync = insync;
for (i = 0; i < map->num_members; i++) {
- __u32 ord = get_imsm_ord_tbl_ent(dev, i);
+ __u32 ord = get_imsm_ord_tbl_ent(dev, i, -1);
int idx = ord_to_idx(ord);
struct imsm_disk *disk;
@@ -4885,7 +4895,7 @@ static void imsm_set_disk(struct active_array *a, int n, int state)
dprintf("imsm: set_disk %d:%x\n", n, state);
- ord = get_imsm_ord_tbl_ent(dev, n);
+ ord = get_imsm_ord_tbl_ent(dev, n, -1);
disk = get_imsm_disk(super, ord_to_idx(ord));
/* check for new failures */
@@ -4992,7 +5002,7 @@ static void imsm_sync_metadata(struct supertype *container) static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a) {
struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
- int i = get_imsm_disk_idx(dev, idx);
+ int i = get_imsm_disk_idx(dev, idx, -1);
struct dl *dl;
for (dl = super->disks; dl; dl = dl->next) @@ -5013,7 +5023,7 @@ static struct dl *imsm_add_spare(struct intel_super *super, int slot,
struct mdinfo *additional_test_list) {
struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
- int idx = get_imsm_disk_idx(dev, slot);
+ int idx = get_imsm_disk_idx(dev, slot, -1);
struct imsm_super *mpb = super->anchor;
struct imsm_map *map;
unsigned long long pos;
@@ -5278,7 +5288,7 @@ static int disks_overlap(struct intel_super *super, int idx, struct imsm_update_
int j;
for (i = 0; i < map->num_members; i++) {
- disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
+ disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, -1));
for (j = 0; j < new_map->num_members; j++)
if (serialcmp(disk->serial, inf[j].serial) == 0)
return 1;
@@ -5571,7 +5581,7 @@ update_reshape_exit:
struct dl *dl;
unsigned int found;
int failed;
- int victim = get_imsm_disk_idx(dev, u->slot);
+ int victim = get_imsm_disk_idx(dev, u->slot, -1);
int i;
for (dl = super->disks; dl; dl = dl->next) @@ -5594,7 +5604,7 @@ update_reshape_exit:
for (i = 0; i < map->num_members; i++) {
if (i == u->slot)
continue;
- disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
+ disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i, -1));
if (!disk || is_failed(disk))
failed++;
}
@@ -6059,7 +6069,7 @@ static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned ind
/* update ord entries being careful not to propagate
* ord-flags to the first map
*/
- ord = get_imsm_ord_tbl_ent(dev, j);
+ ord = get_imsm_ord_tbl_ent(dev, j, -1);
if (ord_to_idx(ord) <= index)
continue;
@@ -6150,7 +6160,7 @@ static int update_level_imsm(struct supertype *st, struct mdinfo *info,
(dl->minor != newdi->disk.minor))
continue;
slot = get_imsm_disk_slot(map, dl->index);
- idx = get_imsm_ord_tbl_ent(dev_new, slot);
+ idx = get_imsm_ord_tbl_ent(dev_new, slot, 0);
tmp_ord_tbl[newdi->disk.raid_disk] = idx;
break;
}
@@ -6554,7 +6564,7 @@ calculate_size_only:
/* calculate new size
*/
if (new_map != NULL) {
- used_disks = imsm_num_data_members(upd_devs);
+ used_disks = imsm_num_data_members(upd_devs, 0);
array_blocks = new_map->blocks_per_member * used_disks;
/* round array size down to closest MB
*/
--
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