initial code repo

[stor4nfv.git] / src / ceph / qa / btrfs / test_async_snap.c

diff --git a/src/ceph/qa/btrfs/test_async_snap.c b/src/ceph/qa/btrfs/test_async_snap.c
new file mode 100644 (file)
index 0000000..211be95
--- /dev/null
+++ b/src/ceph/qa/btrfs/test_async_snap.c
@@ -0,0 +1,83 @@
+#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;
+struct btrfs_ioctl_vol_args vold;
+int max = 4;
+
+void check_return(int r)
+{
+       if (r < 0) {
+               printf("********* failed with %d %s ********\n", errno, strerror(errno));
+               exit(1);
+       }
+}
+
+int main(int argc, char **argv)
+{
+       int num = 1000;
+
+       if (argc > 1)
+               num = atoi(argv[1]);
+       printf("will do %d iterations\n", num);
+
+        int cwd = open(".", O_RDONLY);
+        printf("cwd = %d\n", cwd);
+        while (num-- > 0) {
+               if (rand() % 10 == 0) {
+                       __u64 transid;
+                       int r;
+                       printf("sync starting\n");
+                       r = ioctl(cwd, BTRFS_IOC_START_SYNC, &transid);
+                       check_return(r);
+                       printf("sync started, transid %lld, waiting\n", transid);
+                       r = ioctl(cwd, BTRFS_IOC_WAIT_SYNC, &transid);
+                       check_return(r);
+                       printf("sync finished\n");      
+               }
+
+                int i = rand() % max;
+                struct stat st;
+                va.fd = cwd;
+                sprintf(va.name, "test.%d", i);
+                va.transid = 0;
+                int r = stat(va.name, &st);
+                if (r < 0) {
+                       if (rand() % 3 == 0) {
+                               printf("snap create (sync) %s\n", va.name);
+                               va.flags = 0;
+                               r = ioctl(cwd, BTRFS_IOC_SNAP_CREATE_V2, &va);
+                               check_return(r);
+                       } else {
+                               printf("snap create (async) %s\n", va.name);
+                               va.flags = BTRFS_SUBVOL_CREATE_ASYNC;
+                               r = ioctl(cwd, BTRFS_IOC_SNAP_CREATE_V2, &va);
+                               check_return(r);
+                               printf("snap created, transid %lld\n", va.transid);
+                               if (rand() % 2 == 0) {
+                                       printf("waiting for async snap create\n");
+                                       r = ioctl(cwd, BTRFS_IOC_WAIT_SYNC, &va.transid);
+                                       check_return(r);
+                               }
+                        }
+                } else {
+                        printf("snap remove %s\n", va.name);
+                       vold.fd = va.fd;
+                       strcpy(vold.name, va.name);
+                        r = ioctl(cwd, BTRFS_IOC_SNAP_DESTROY, &vold);
+                       check_return(r);
+                }
+        }
+       return 0;
+}