new util: 'btrfs'

This commit introduces a new command called 'btrfs' for managing
a btrfs filesystem. 'btrfs' handles:
- snapshot/subvolume creation
- adding/removal of volume (ie: disk)
- defragment of a tree
- scan of a device searching a btrfs filesystem
- re-balancing of the chunk on the disks
- listing subvolumes and snapshots

This has also been updated to include the new defrag range ioctl.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 112 deletions

diff --git a/btrfs-defrag.c b/btrfs-defrag.c
index 9aab3ba4..8f1525a3 100644
--- a/btrfs-defrag.c
+++ b/btrfs-defrag.c
@@ -37,115 +37,3 @@
 #include "utils.h"
 #include "version.h"
 
-static u64 parse_size(char *s)
-{
-	int len = strlen(s);
-	char c;
-	u64 mult = 1;
-
-	if (!isdigit(s[len - 1])) {
-		c = tolower(s[len - 1]);
-		switch (c) {
-		case 'g':
-			mult *= 1024;
-		case 'm':
-			mult *= 1024;
-		case 'k':
-			mult *= 1024;
-		case 'b':
-			break;
-		default:
-			fprintf(stderr, "Unknown size descriptor %c\n", c);
-			exit(1);
-		}
-		s[len - 1] = '\0';
-	}
-	return atoll(s) * mult;
-}
-
-static void print_usage(void)
-{
-	printf("usage: btrfs-defrag [-c] [-f] [-s start] [-l len] "
-	       "[-t threshold] file ...\n");
-	exit(1);
-}
-
-int main(int ac, char **av)
-{
-	int fd;
-	int compress = 0;
-	int flush = 0;
-	u64 start = 0;
-	u64 len = (u64)-1;
-	u32 thresh = 0;
-	int i;
-	int errors = 0;
-	int ret = 0;
-	int verbose = 0;
-	struct btrfs_ioctl_defrag_range_args range;
-
-	while(1) {
-		int c = getopt(ac, av, "vcfs:l:t:");
-		if (c < 0)
-			break;
-		switch(c) {
-		case 'c':
-			compress = 1;
-			break;
-		case 'f':
-			flush = 1;
-			break;
-		case 'v':
-			verbose = 1;
-			break;
-		case 's':
-			start = parse_size(optarg);
-			break;
-		case 'l':
-			len = parse_size(optarg);
-			break;
-		case 't':
-			thresh = parse_size(optarg);
-			break;
-		default:
-			print_usage();
-			return 1;
-		}
-	}
-	if (ac - optind == 0)
-		print_usage();
-
-	memset(&range, 0, sizeof(range));
-	range.start = start;
-	range.len = len;
-	range.extent_thresh = thresh;
-	if (compress)
-		range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
-	if (flush)
-		range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
-
-	for (i = optind; i < ac; i++) {
-		fd = open(av[i], O_RDWR);
-		if (fd < 0) {
-			fprintf(stderr, "failed to open %s\n", av[i]);
-			perror("open:");
-			errors++;
-			continue;
-		}
-		ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
-		if (ret) {
-			fprintf(stderr, "ioctl failed on %s ret %d\n",
-				av[i], ret);
-			errors++;
-		}
-		close(fd);
-	}
-	if (verbose)
-		printf("%s\n", BTRFS_BUILD_VERSION);
-	if (errors) {
-		fprintf(stderr, "total %d failures\n", errors);
-		exit(1);
-	}
-	return 0;
-}
-