mount two littlefs filesystems, one on extern flash and one on nvs

Question

Hej

Im trying to mount two littlefs filesystems. One on externl flash and one on the nvs.

Up until now I have been using littlefs on my external flash without any problems.

I have made a small test cmd to mount the new filesystem as I have found i cannot just add it to the fstab as that will just mount to the existing externel flash:

FS_LITTLEFS_DECLARE_DEFAULT_CONFIG(nvs_storage_data);
static struct fs_mount_t littlefs_mnt = {
    .type = FS_LITTLEFS,
    .fs_data = &nvs_storage_data,
    .storage_dev = (void *)FIXED_PARTITION_ID(nvs_storage),
    .mnt_point = "/nvs",
};

void cmd_test(const struct shell *shell, size_t argc, char **argv) {
    shell_print(shell, "Test command");

    int rc = fs_mount(&littlefs_mnt);

    if (rc != 0) {
        shell_error(shell, "Error mounting as littlefs: %d", rc);
        return;
    }
}

I have defined the partition in my dts:

&flash0 {
	partitions {
		compatible = "fixed-partitions";
		#address-cells = <1>;
		#size-cells = <1>;

		boot_partition: partition@0 {
			label = "mcuboot";
			reg = <0x0 0x20000>;
		};
		slot0_partition: partition@20000 {
			label = "image-0";
			reg = <0x20000 0xc0000>;
		};
		nvs_storage: partition@e0000 {
			label = "nvs_storage";
			reg = <0xe0000 0x20000>;
		};
	};
};

When i run my test command the code errors out in:

lfs_dir_fetchmatch

Please help me understand what im missing.

/Peter