brassow
Reset sync_search on resume. The effect of this patch is to check
over the log bitmap when a mirror is resumed - providing a "second
chance" at resync'ing regions which may have failed to resync in
the original pass due to an I/O error.
Index: linux-2.6.18.1/drivers/md/dm-log.c
===================================================================
--- linux-2.6.18.1.orig/drivers/md/dm-log.c 2006-10-25 11:36:14.000000000 -0500
+++ linux-2.6.18.1/drivers/md/dm-log.c 2006-10-25 11:36:17.000000000 -0500
@@ -466,6 +466,7 @@ static int disk_resume(struct dirty_log
/* copy clean across to sync */
memcpy(lc->sync_bits, lc->clean_bits, size);
lc->sync_count = count_bits32(lc->clean_bits, lc->bitset_uint32_count);
+ lc->sync_search = 0;
/* set the correct number of regions in the header */
lc->header.nr_regions = lc->region_count;
@@ -480,6 +481,13 @@ static uint32_t core_get_region_size(str
return lc->region_size;
}
+static int core_resume(struct dirty_log *log)
+{
+ struct log_c *lc = (struct log_c *) log->context;
+ lc->sync_search = 0;
+ return 0;
+}
+
static int core_is_clean(struct dirty_log *log, region_t region)
{
struct log_c *lc = (struct log_c *) log->context;
@@ -621,6 +629,7 @@ static struct dirty_log_type _core_type
.module = THIS_MODULE,
.ctr = core_ctr,
.dtr = core_dtr,
+ .resume = core_resume,
.get_region_size = core_get_region_size,
.is_clean = core_is_clean,
.in_sync = core_in_sync,
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
