[PATCH 24/34] imsm: Update metadata for second array
From: Adam Kwolek <hidden>
Date: 2011-01-04 14:38:47
Subsystem:
the rest · Maintainer:
Linus Torvalds
When second array reshape is about to start metadata should be update by mdmon in imsm_set_array_state(). Signed-off-by: Adam Kwolek <redacted> --- super-intel.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 77 insertions(+), 0 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index 72b6cf5..0f10e32 100644
--- a/super-intel.c
+++ b/super-intel.c@@ -5002,6 +5002,83 @@ static int imsm_set_array_state(struct active_array *a, int consistent) for (mdi = a->info.devs; mdi; mdi = mdi->next) imsm_set_disk(a, mdi->disk.raid_disk, mdi->curr_state); + } else if (dev->vol.migr_state == 0) { + /* check here if this is container action + * and next metadata should be prepared + */ + struct active_array *aa = a->container->arrays; + int arrays_under_reshape = 0; + + /* check if no other arrays is under reshape + */ + while (aa) { + if (aa->container) { + int inst = aa->info.container_member; + struct intel_super *super = aa->container->sb; + struct imsm_dev *dev = + get_imsm_dev(super, inst); + struct imsm_map *map2 = get_imsm_map(dev, 1); + + if (map2) + arrays_under_reshape++; + } + aa = aa->next; + } + if (arrays_under_reshape == 0) { + struct imsm_map *map = get_imsm_map(dev, 0); + struct dl *dl = NULL; + int disks_count = 0; + + /* check if this array should be reshaped + */ + for (dl = super->disks; dl; dl = dl->next) + if (dl->index >= 0) + disks_count++; + if (disks_count > map->num_members) { + /* manage changes in volume + */ + struct imsm_map *map, *map2; + int prev_num_members; + int used_disks; + int i; + + map = get_imsm_map(dev, 0); + prev_num_members = map->num_members; + map->num_members = disks_count; + dev->vol.migr_state = 1; + dev->vol.curr_migr_unit = 0; + dev->vol.migr_type = MIGR_GEN_MIGR; + for (i = prev_num_members; + i < map->num_members; i++) + set_imsm_ord_tbl_ent(map, i, i); + map2 = get_imsm_map(dev, 1); + /* Copy the current map */ + memcpy(map2, map, sizeof_imsm_map(map)); + map2->num_members = prev_num_members; + + /* calculate new size + */ + used_disks = imsm_num_data_members(dev, 0); + if (used_disks) { + unsigned long long array_blocks; + + array_blocks = + map->blocks_per_member + * used_disks; + /* round array size down to closest MB + */ + array_blocks = (array_blocks + >> SECT_PER_MB_SHIFT) + << SECT_PER_MB_SHIFT; + dev->size_low = + __cpu_to_le32((__u32)array_blocks); + dev->size_high = + __cpu_to_le32( + (__u32)(array_blocks >> 32)); + } + super->updates_pending++; + } + } } return consistent;