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-   -   dm error: return error for discards too (http://www.linux-archive.org/device-mapper-development/403426-dm-error-return-error-discards-too.html)

Mike Snitzer 07-23-2010 11:23 PM

dm error: return error for discards too
 
Have the error target respond to a discard request with a hard -EIO
rather than fail the request with -EOPNOTSUPP.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-target.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 11dea11..98c31b0 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -113,6 +113,9 @@ void dm_unregister_target(struct target_type *tt)
*/
static int io_err_ctr(struct dm_target *tt, unsigned int argc, char **args)
{
+ /* return error for discards (rather than -EOPNOTSUPP) */
+ tt->num_discard_requests = 1;
+
return 0;
}

--
1.6.6.1

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Mike Snitzer 07-24-2010 04:09 PM

dm error: return error for discards too
 
Have the error target respond to a discard request with a hard -EIO
rather than fail the request with -EOPNOTSUPP.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-target.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c
index 11dea11..98c31b0 100644
--- a/drivers/md/dm-target.c
+++ b/drivers/md/dm-target.c
@@ -113,6 +113,9 @@ void dm_unregister_target(struct target_type *tt)
*/
static int io_err_ctr(struct dm_target *tt, unsigned int argc, char **args)
{
+ /* return error for discards (rather than -EOPNOTSUPP) */
+ tt->num_discard_requests = 1;
+
return 0;
}

--
1.6.6.1

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