qa/btrfs/create_async_snap

Stupid tool to call the async snap ioctl.  Until the btrfs tool does it.

Signed-off-by: Sage Weil <sage@newdream.net>

2 files changed, 35 insertions, 1 deletions

diff --git a/qa/btrfs/Makefile b/qa/btrfs/Makefile
index 354948c16bc..be95ecfd3cd 100644
--- a/qa/btrfs/Makefile
+++ b/qa/btrfs/Makefile
@@ -1,6 +1,6 @@
 CFLAGS = -Wall -Wextra -D_GNU_SOURCE
 
-TARGETS = clone_range test_async_snap
+TARGETS = clone_range test_async_snap create_async_snap
 
 .c:
 	$(CC) $(CFLAGS) $@.c -o $@
diff --git a/qa/btrfs/create_async_snap.c b/qa/btrfs/create_async_snap.c
new file mode 100644
index 00000000000..2ef22af7b45
--- /dev/null
+++ b/qa/btrfs/create_async_snap.c
@@ -0,0 +1,34 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <string.h>
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include "../../src/os/btrfs_ioctl.h"
+
+struct btrfs_ioctl_vol_args_v2 va;
+
+int main(int argc, char **argv)
+{
+	int fd;
+	int r;
+
+	if (argc != 3) {
+		printf("usage: %s <source subvol> <name>\n", argv[0]);
+		return 1;
+	}
+	printf("creating snap ./%s from %s\n", argv[2], argv[1]);
+	fd = open(".", O_RDONLY);
+	va.fd = open(argv[1], O_RDONLY);
+	va.flags = BTRFS_SUBVOL_CREATE_ASYNC;
+	strcpy(va.name, argv[2]);
+	r = ioctl(fd, BTRFS_IOC_SNAP_CREATE_V2, (unsigned long long)&va);
+	printf("result %d\n", r ? -errno:0);
+	return r;
+}