verify: add --trim_verify_errror to mask trimmed error

For example, in io_uring_cmd with nvme cmd_type, trimmed offset might
return NVMe status code to represent the given offsets are unmapped.  In
this case, failure might be expected.  This patch added a new option
just like the other trim_verify_* series to maskd the expected error
value from the ioengine.

Signed-off-by: Minwoo Im <minwoo.im@samsung.com>

Author: minwooim

options.c

@@ -3529,6 +3529,16 @@ struct fio_option fio_options[FIO_MAX_OPTS] = {
 		.category = FIO_OPT_C_IO,
 		.group	= FIO_OPT_G_TRIM,
 	},
+	{
+		.name	= "trim_verify_error",
+		.lname	= "Trim verify error",
+		.type	= FIO_OPT_INT,
+		.off1	= offsetof(struct thread_options, trim_error),
+		.help	= "Error value for trim verification",
+		.def	= "0",
+		.category = FIO_OPT_C_IO,
+		.group	= FIO_OPT_G_TRIM,
+	},
 	{
 		.name	= "trim_backlog",
 		.lname	= "Trim backlog",
@@ -3566,6 +3576,12 @@ struct fio_option fio_options[FIO_MAX_OPTS] = {
 		.type	= FIO_OPT_UNSUPPORTED,
 		.help	= "Fio does not support TRIM on your platform",
 	},
+	{
+		.name	= "trim_verify_error",
+		.lname	= "Trim verify error",
+		.type	= FIO_OPT_UNSUPPORTED,
+		.help	= "Fio does not support TRIM on your platform",
+	},
 	{
 		.name	= "trim_backlog",
 		.lname	= "Trim backlog",

thread_options.h

@@ -287,6 +287,7 @@ struct thread_options {
 	unsigned int trim_percentage;
 	unsigned int trim_batch;
 	unsigned int trim_zero;
+	unsigned int trim_error;
 	unsigned long long trim_backlog;
 	unsigned int clat_percentiles;
 	unsigned int slat_percentiles;
@@ -620,12 +621,14 @@ struct thread_options_pack {
 	uint32_t trim_percentage;
 	uint32_t trim_batch;
 	uint32_t trim_zero;
+	uint32_t trim_error;
 	uint64_t trim_backlog;
 	uint32_t clat_percentiles;
 	uint32_t lat_percentiles;
 	uint32_t slat_percentiles;
 	uint32_t percentile_precision;
 	uint32_t pad;
+	uint32_t pad2;
 	fio_fp64_t percentile_list[FIO_IO_U_LIST_MAX_LEN];
 
 	uint8_t read_iolog_file[FIO_TOP_STR_MAX];

verify.c

@@ -910,6 +910,12 @@ static int verify_zero(struct io_u *io_u)
 
 static int verify_trimmed_io_u(struct thread_data *td, struct io_u *io_u)
 {
+	if (td->o.trim_error) {
+		if (td->o.trim_error == io_u->error)
+			return 0;
+		return EILSEQ;
+	}
+
 	if (!td->o.trim_zero)
 		return 0;