mirror of https://github.com/ceph/ceph
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <string.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include "../../src/os/btrfs_ioctl.h"
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struct btrfs_ioctl_vol_args_v2 va;
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struct btrfs_ioctl_vol_args vold;
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int max = 4;
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void check_return(int r)
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{
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if (r < 0) {
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printf("********* failed with %d %s ********\n", errno, strerror(errno));
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exit(1);
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}
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}
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int main(int argc, char **argv)
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{
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int num = 100;
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if (argc > 1)
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num = atoi(argv[1]);
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printf("will do %d iterations\n", num);
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int cwd = open(".", O_RDONLY);
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printf("cwd = %d\n", cwd);
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while (1) {
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if (rand() % 10 == 0) {
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__u64 transid;
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int r;
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printf("sync starting\n");
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r = ioctl(cwd, BTRFS_IOC_START_SYNC, &transid);
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check_return(r);
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printf("sync started, transid %lld, waiting\n", transid);
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r = ioctl(cwd, BTRFS_IOC_WAIT_SYNC, &transid);
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check_return(r);
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printf("sync finished\n");
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}
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int i = rand() % max;
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struct stat st;
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va.fd = cwd;
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sprintf(va.name, "test.%d", i);
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va.transid = 0;
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int r = stat(va.name, &st);
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if (r < 0) {
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if (rand() % 3 == 0) {
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printf("snap create (sync) %s\n", va.name);
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va.flags = 0;
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r = ioctl(cwd, BTRFS_IOC_SNAP_CREATE_V2, &va);
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check_return(r);
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} else {
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printf("snap create (async) %s\n", va.name);
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va.flags = BTRFS_SUBVOL_CREATE_ASYNC;
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r = ioctl(cwd, BTRFS_IOC_SNAP_CREATE_V2, &va);
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check_return(r);
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printf("snap created, transid %lld\n", va.transid);
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if (rand() % 2 == 0) {
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printf("waiting for async snap create\n");
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r = ioctl(cwd, BTRFS_IOC_WAIT_SYNC, &va.transid);
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check_return(r);
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}
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}
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} else {
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printf("snap remove %s\n", va.name);
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vold.fd = va.fd;
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strcpy(vold.name, va.name);
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r = ioctl(cwd, BTRFS_IOC_SNAP_DESTROY, &vold);
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check_return(r);
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}
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}
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}
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