The patch titled
dm log: report fault status
has been added to the -mm tree. Its filename is
dm-log-report-fault-status.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: dm log: report fault status
From: Jonathan E Brassow <jbrassow@xxxxxxxxxx>
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 <jbrassow@xxxxxxxxxx>
Signed-off-by: Alasdair G Kergon <agk@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-log.c | 7 ++++---
drivers/md/dm-raid1.c | 11 +++++++----
2 files changed, 11 insertions(+), 7 deletions(-)
diff -puN drivers/md/dm-log.c~dm-log-report-fault-status drivers/md/dm-log.c
--- a/drivers/md/dm-log.c~dm-log-report-fault-status
+++ a/drivers/md/dm-log.c
@@ -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;
}
diff -puN drivers/md/dm-raid1.c~dm-log-report-fault-status drivers/md/dm-raid1.c
--- a/drivers/md/dm-raid1.c~dm-log-report-fault-status
+++ a/drivers/md/dm-raid1.c
@@ -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,
_
Patches currently in -mm which might be from jbrassow@xxxxxxxxxx are
dm-log-fault-detection.patch
dm-log-report-fault-status.patch
dm-raid1-add-handle_errors-feature-flag.patch
dm-raid1-fix-to-commit-pending-clear-region-requests.patch
dm-raid1-switch-rh_in_sync-to-blocking-in-do_reads.patch
dm-log-fix-resume-failed-log-device.patch
-
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