From: Adam Kwolek <adam.kwolek@xxxxxxxxx>
mdadm has to prepare checkpoint information update and send it to mdmon.
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
---
super-intel.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/super-intel.c b/super-intel.c
index 2a11879..fa4e15d 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -1953,6 +1953,51 @@ out:
}
/*******************************************************************************
+ * function: imsm_create_metadata_checkpoint_update
+ * Description: It creates update for checkpoint change.
+ * Parameters:
+ * super : imsm internal array info
+ * u : pointer to prepared update
+ * Returns:
+ * Uptate length.
+ * If length is equal to 0, input pointer u contains no update
+ ******************************************************************************/
+static int imsm_create_metadata_checkpoint_update(
+ struct intel_super *super,
+ struct imsm_update_general_migration_checkpoint **u)
+{
+
+ int update_memory_size = 0;
+
+ dprintf("imsm_create_metadata_checkpoint_update(enter)\n");
+
+ if (u == NULL)
+ return 0;
+ *u = NULL;
+
+ /* size of all update data without anchor */
+ update_memory_size =
+ sizeof(struct imsm_update_general_migration_checkpoint);
+
+ *u = calloc(1, update_memory_size);
+ if (*u == NULL) {
+ dprintf("error: cannot get memory for "
+ "imsm_create_metadata_checkpoint_update update\n");
+ return 0;
+ }
+ (*u)->type = update_general_migration_checkpoint;
+ (*u)->curr_migr_unit = __le32_to_cpu(super->migr_rec->curr_migr_unit);
+ dprintf("imsm_create_metadata_checkpoint_update: prepared for %u\n",
+ (*u)->curr_migr_unit);
+
+ return update_memory_size;
+}
+
+
+static void imsm_update_metadata_locally(struct supertype *st,
+ void *buf, int len);
+
+/*******************************************************************************
* Function: write_imsm_migr_rec
* Description: Function writes imsm migration record
* (at the last sector of disk)
@@ -1970,6 +2015,8 @@ static int write_imsm_migr_rec(struct supertype *st)
int fd = -1;
int retval = -1;
struct dl *sd;
+ int len;
+ struct imsm_update_general_migration_checkpoint *u;
for (sd = super->disks ; sd ; sd = sd->next) {
/* write to 2 first slots only */
@@ -1995,6 +2042,26 @@ static int write_imsm_migr_rec(struct supertype *st)
close(fd);
fd = -1;
}
+ /* update checkpoint information in metadata */
+ len = imsm_create_metadata_checkpoint_update(super, &u);
+
+ if (len <= 0) {
+ dprintf("imsm: Cannot prepare update\n");
+ goto out;
+ }
+ /* update metadata locally */
+ imsm_update_metadata_locally(st, u, len);
+ /* and possibly remotely */
+ if (st->update_tail) {
+ append_metadata_update(st, u, len);
+ /* during reshape we do all work inside metadata handler
+ * manage_reshape(), so metadata update has to be triggered
+ * insida it
+ */
+ flush_metadata_updates(st);
+ st->update_tail = &st->updates;
+ } else
+ free(u);
retval = 0;
out:
--
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