search for: 2804cba

...can_zero && cmd == NBD_CMD_WRITE_ZEROES) { + nbdkit_error ("invalid request: write zeroes operation not supported"); + *error = EINVAL; + return false; + } + return true; /* Command validates. */ } diff --git a/src/filters.c b/src/filters.c index 2804cba..87c6e97 100644 --- a/src/filters.c +++ b/src/filters.c @@ -297,6 +297,20 @@ next_can_trim (void *nxdata) return b_conn->b->can_trim (b_conn->b, b_conn->conn); } +static int +next_can_zero (void *nxdata) +{ + struct b_conn *b_conn = nxdata; + return b_conn->b->can_zero (b_c...

I still need to add testsuite coverage. Perhaps it might be easier if I create a new '--filter=log logfile=foo' filter that produces a log of which commands a client sent, then compare the log using a known client that uses write_zeroes (qemu-io works well) both with and without --filter=nozero to prove that the change in advertisement changes the commands sent over the wire (that would