From: Jonathan E Brassow This patch reports the status of the log device so that userspace can detect the error and take appropriate action. Signed-off-by: Jonathan E Brassow Signed-off-by: Alasdair G Kergon --- drivers/md/dm-log.c | 7 ++++--- drivers/md/dm-raid1.c | 11 +++++++---- 2 files changed, 11 insertions(+), 7 deletions(-) Index: linux-2.6.21/drivers/md/dm-log.c =================================================================== --- linux-2.6.21.orig/drivers/md/dm-log.c 2007-05-01 17:40:51.000000000 +0100 +++ linux-2.6.21/drivers/md/dm-log.c 2007-05-01 17:40:51.000000000 +0100 @@ -615,6 +615,7 @@ static int core_status(struct dirty_log switch(status) { case STATUSTYPE_INFO: + DMEMIT("1 %s", log->type->name); break; case STATUSTYPE_TABLE: @@ -630,17 +631,17 @@ static int disk_status(struct dirty_log char *result, unsigned int maxlen) { int sz = 0; - char buffer[16]; struct log_c *lc = log->context; switch(status) { case STATUSTYPE_INFO: + DMEMIT("3 %s %s %c", log->type->name, lc->log_dev->name, + lc->log_dev_failed ? 'D' : 'A'); break; case STATUSTYPE_TABLE: - format_dev_t(buffer, lc->log_dev->bdev->bd_dev); DMEMIT("%s %u %s %u ", log->type->name, - lc->sync == DEFAULTSYNC ? 2 : 3, buffer, + lc->sync == DEFAULTSYNC ? 2 : 3, lc->log_dev->name, lc->region_size); DMEMIT_SYNC; } Index: linux-2.6.21/drivers/md/dm-raid1.c =================================================================== --- linux-2.6.21.orig/drivers/md/dm-raid1.c 2007-05-01 17:40:46.000000000 +0100 +++ linux-2.6.21/drivers/md/dm-raid1.c 2007-05-01 17:40:51.000000000 +0100 @@ -1205,11 +1205,9 @@ static void mirror_resume(struct dm_targ static int mirror_status(struct dm_target *ti, status_type_t type, char *result, unsigned int maxlen) { - unsigned int m, sz; + unsigned int m, sz = 0; struct mirror_set *ms = (struct mirror_set *) ti->private; - sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); - switch (type) { case STATUSTYPE_INFO: DMEMIT("%d ", ms->nr_mirrors); @@ -1220,9 +1218,14 @@ static int mirror_status(struct dm_targe (unsigned long long)ms->rh.log->type-> get_sync_count(ms->rh.log), (unsigned long long)ms->nr_regions); + + sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); + break; case STATUSTYPE_TABLE: + sz = ms->rh.log->type->status(ms->rh.log, type, result, maxlen); + DMEMIT("%d", ms->nr_mirrors); for (m = 0; m < ms->nr_mirrors; m++) DMEMIT(" %s %llu", ms->mirror[m].dev->name, @@ -1234,7 +1237,7 @@ static int mirror_status(struct dm_targe static struct target_type mirror_target = { .name = "mirror", - .version = {1, 0, 2}, + .version = {1, 0, 3}, .module = THIS_MODULE, .ctr = mirror_ctr, .dtr = mirror_dtr,