Fix header_interval minimum value

[fio.git] / options.c

diff --git a/options.c b/options.c
index 8c27d46183379cd0f1fb9e5691f7d48436525fb8..01d23865a968952606006e3a57dd3e3a21d323d5 100644 (file)
--- a/options.c
+++ b/options.c
@@ -203,6 +203,17 @@ static int str_opendir_cb(void *data, const char fio_unused *str)
        return add_dir_files(td, td->o.opendir);
 }
 
+static int str_header_offset_cb(void *data, unsigned int *off)
+{
+       struct thread_data *td = data;
+       if (*off && *off < sizeof(struct verify_header)) {
+               log_err("fio: header_offset too small\n");
+               return 1;
+       }
+       td->o.header_offset = *off;
+       return 0;
+}
+
 
 #define __stringify_1(x)       #x
 #define __stringify(x)         __stringify_1(x)
@@ -569,6 +580,10 @@ static struct fio_option options[] = {
                            .oval = VERIFY_NONE,
                            .help = "Don't do IO verification",
                          },
+                         { .ival = "md5",
+                           .oval = VERIFY_MD5,
+                           .help = "Use md5 checksums for verification",
+                         },
                          { .ival = "crc64",
                            .oval = VERIFY_CRC64,
                            .help = "Use crc64 checksums for verification",
@@ -585,10 +600,6 @@ static struct fio_option options[] = {
                            .oval = VERIFY_CRC7,
                            .help = "Use crc7 checksums for verification",
                          },
-                         { .ival = "md5",
-                           .oval = VERIFY_MD5,
-                           .help = "Use md5 checksums for verification",
-                         },
                          {
                            .ival = "null",
                            .oval = VERIFY_NULL,
@@ -603,6 +614,20 @@ static struct fio_option options[] = {
                .help   = "Sort written verify blocks for read back",
                .def    = "1",
        },
+       {
+               .name   = "header_interval",
+               .type   = FIO_OPT_STR_VAL_INT,
+               .off1   = td_var_offset(header_interval),
+               .minval = 2 * sizeof(struct verify_header),
+               .help   = "Store buffer header every N bytes",
+       },
+       {
+               .name   = "header_offset",
+               .type   = FIO_OPT_STR_VAL_INT,
+               .help   = "Offset header location by N bytes",
+               .def    = "0",
+               .cb     = str_header_offset_cb, 
+       },
        {
                .name   = "write_iolog",
                .type   = FIO_OPT_STR_STORE,