Have the zero target silently drop a discard rather than fail the request with -EOPNOTSUPP. Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> --- drivers/md/dm-zero.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/md/dm-zero.c b/drivers/md/dm-zero.c index bbc9703..8bd76e0 100644 --- a/drivers/md/dm-zero.c +++ b/drivers/md/dm-zero.c @@ -22,6 +22,9 @@ static int zero_ctr(struct dm_target *ti, unsigned int argc, char **argv) return -EINVAL; } + /* silently drop discards (this avoids -EOPNOTSUPP) */ + ti->num_discard_requests = 1; + return 0; } -- 1.6.6.1 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
