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btrfs-progs: convert: update default output

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The messages printed by convert are incomplete regarding the source and
target filesystems and can be improved and unified with the style we
already have eg. in mkfs:

  $ btrfs-convert image
  btrfs-convert from btrfs-progs v5.13.1

  Source filesystem:
    Type:           ext2
    Label:
    Blocksize:      4096
    UUID:           b9bb96e0-7b2f-44a1-9670-1b6da27b26b0
  Target filesystem:
    Label:          NEWLABEL
    Blocksize:      4096
    Nodesize:       16384
    UUID:           c7dd7532-7e17-41b0-bf7c-12d695bbf6d0
    Checksum:       crc32c
    Features:       extref, skinny-metadata (default)
      Data csum:    yes
      Inline data:  yes
      Copy xattr:   yes
  Reported stats:
    Total space:      1073741824
    Free space:        805240832 (74.99%)
    Inode count:           65536
    Free inodes:           65525
    Block count:          262144
  Create initial btrfs filesystem
  Create ext2 image file
  Create btrfs metadata
  Copy inodes [o] [         0/        11]
  Set label to 'NEWLABEL'
  Conversion complete

  $ btrfs-convert -r image
  btrfs-convert from btrfs-progs v5.13.1

  Open filesystem for rollback:
    Label:
    UUID:            c7dd7532-7e17-41b0-bf7c-12d695bbf6d0
    Restoring from:  ext2_saved/image

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2021-08-19 22:48:22 +02:00
parent 33543eb2b1
commit dc29a5c51d
1 changed files with 53 additions and 18 deletions
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71
convert/main.c
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@ -130,7 +130,7 @@ static void *print_copied_inodes(void *p)
while (1) {
count++;
pthread_mutex_lock(&priv->mutex);
printf("copy inodes [%c] [%10llu/%10llu]\r",
printf("Copy inodes [%c] [%10llu/%10llu]\r",
work_indicator[count % 4],
(unsigned long long)priv->cur_copy_inodes,
(unsigned long long)priv->max_copy_inodes);
@ -1197,18 +1197,30 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
memcpy(mkfs_cfg.fs_uuid, fsid, BTRFS_UUID_UNPARSED_SIZE);
}
printf("create btrfs filesystem:\n");
printf("\tblocksize: %u\n", blocksize);
printf("\tnodesize: %u\n", nodesize);
printf("\tfeatures: %s\n", features_buf);
printf("\tchecksum: %s\n", btrfs_super_csum_name(csum_type));
printf("Source filesystem:\n");
printf(" Type: %s\n", cctx.convert_ops->name);
printf(" Label: %s\n", cctx.label);
printf(" Blocksize: %u\n", blocksize);
uuid_unparse(cctx.fs_uuid, fsid_str);
printf("\told UUID: %s\n", fsid_str);
printf("\tnew UUID: %s\n", mkfs_cfg.fs_uuid);
printf("free space report:\n");
printf("\ttotal: %llu\n",cctx.total_bytes);
printf("\tfree: %llu (%.2f%%)\n", cctx.free_bytes_initial,
printf(" UUID: %s\n", fsid_str);
printf("Target filesystem:\n");
printf(" Label: %s\n", fslabel);
printf(" Blocksize: %u\n", blocksize);
printf(" Nodesize: %u\n", nodesize);
printf(" UUID: %s\n", mkfs_cfg.fs_uuid);
printf(" Checksum: %s\n", btrfs_super_csum_name(csum_type));
printf(" Features: %s\n", features_buf);
printf(" Data csum: %s\n", (convert_flags & CONVERT_FLAG_DATACSUM) ? "yes" : "no");
printf(" Inline data: %s\n", (convert_flags & CONVERT_FLAG_INLINE_DATA) ? "yes" : "no");
printf(" Copy xattr: %s\n", (convert_flags & CONVERT_FLAG_XATTR) ? "yes" : "no");
printf("Reported stats:\n");
printf(" Total space: %12llu\n", cctx.total_bytes);
printf(" Free space: %12llu (%.2f%%)\n", cctx.free_bytes_initial,
100.0 * cctx.free_bytes_initial / cctx.total_bytes);
printf(" Inode count: %12llu\n", cctx.inodes_count);
printf(" Free inodes: %12llu\n", cctx.free_inodes_count);
printf(" Block count: %12llu\n", cctx.block_count);
mkfs_cfg.csum_type = csum_type;
mkfs_cfg.label = cctx.label;
mkfs_cfg.num_bytes = total_bytes;
@ -1217,6 +1229,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
mkfs_cfg.stripesize = blocksize;
mkfs_cfg.features = features;
printf("Create initial btrfs filesystem\n");
ret = make_convert_btrfs(fd, &mkfs_cfg, &cctx);
if (ret) {
errno = -ret;
@ -1236,7 +1249,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
goto fail;
}
printf("creating %s image file\n", cctx.convert_ops->name);
printf("Create %s image file\n", cctx.convert_ops->name);
snprintf(subvol_name, sizeof(subvol_name), "%s_saved",
cctx.convert_ops->name);
key.objectid = CONV_IMAGE_SUBVOL_OBJECTID;
@ -1255,7 +1268,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
goto fail;
}
printf("creating btrfs metadata\n");
printf("Create btrfs metadata\n");
ret = pthread_mutex_init(&ctx.mutex, NULL);
if (ret) {
error("failed to initialize mutex: %d", ret);
@ -1290,10 +1303,10 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
if (convert_flags & CONVERT_FLAG_COPY_LABEL) {
__strncpy_null(root->fs_info->super_copy->label,
cctx.label, BTRFS_LABEL_SIZE - 1);
printf("copy label '%s'\n", root->fs_info->super_copy->label);
printf("Copy label '%s'\n", root->fs_info->super_copy->label);
} else if (convert_flags & CONVERT_FLAG_SET_LABEL) {
strcpy(root->fs_info->super_copy->label, fslabel);
printf("set label to '%s'\n", fslabel);
printf("Set label to '%s'\n", fslabel);
}
ret = close_ctree(root);
@ -1325,7 +1338,7 @@ static int do_convert(const char *devname, u32 convert_flags, u32 nodesize,
close_ctree(root);
close(fd);
printf("conversion complete\n");
printf("Conversion complete\n");
return 0;
fail:
clean_convert_context(&cctx);
@ -1593,7 +1606,11 @@ static int do_rollback(const char *devname)
struct btrfs_path path;
struct btrfs_dir_item *dir;
struct btrfs_inode_item *inode_item;
struct btrfs_root_ref *root_ref_item;
char *image_name = "image";
char dir_name[PATH_MAX];
int name_len;
char fsid_str[BTRFS_UUID_UNPARSED_SIZE];
char *reserved_ranges[ARRAY_SIZE(btrfs_reserved_ranges)] = { NULL };
u64 total_bytes;
u64 fsize;
@ -1603,6 +1620,8 @@ static int do_rollback(const char *devname)
int ret;
int i;
printf("Open filesystem for rollback:\n");
for (i = 0; i < ARRAY_SIZE(btrfs_reserved_ranges); i++) {
const struct simple_range *range = &btrfs_reserved_ranges[i];
@ -1633,6 +1652,10 @@ static int do_rollback(const char *devname)
}
fs_info = root->fs_info;
printf(" Label: %s\n", fs_info->super_copy->label);
uuid_unparse(fs_info->super_copy->fsid, fsid_str);
printf(" UUID: %s\n", fsid_str);
/*
* Search root backref first, or after subvolume deletion (orphan),
* we can still rollback the image.
@ -1642,7 +1665,6 @@ static int do_rollback(const char *devname)
key.offset = BTRFS_FS_TREE_OBJECTID;
btrfs_init_path(&path);
ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, &path, 0, 0);
btrfs_release_path(&path);
if (ret > 0) {
error("unable to find source fs image subvolume, is it deleted?");
ret = -ENOENT;
@ -1652,6 +1674,18 @@ static int do_rollback(const char *devname)
error("failed to find source fs image subvolume: %m");
goto close_fs;
}
/* (256 ROOT_BACKREF 5) */
/* root backref key dirid 256 sequence 3 name ext2_saved */
root_ref_item = btrfs_item_ptr(path.nodes[0], path.slots[0], struct btrfs_root_ref);
name_len = btrfs_root_ref_name_len(path.nodes[0], root_ref_item);
if (name_len > sizeof(dir_name))
name_len = sizeof(dir_name) - 1;
read_extent_buffer(path.nodes[0], dir_name, (unsigned long)(root_ref_item + 1), name_len);
dir_name[sizeof(dir_name) - 1] = 0;
printf(" Restoring from: %s/%s\n", dir_name, image_name);
btrfs_release_path(&path);
/* Search convert subvolume */
key.objectid = CONV_IMAGE_SUBVOL_OBJECTID;
@ -1747,7 +1781,7 @@ free_mem:
if (ret)
error("rollback failed");
else
printf("rollback succeeded\n");
printf("Rollback succeeded\n");
return ret;
}
@ -1794,6 +1828,7 @@ int BOX_MAIN(convert)(int argc, char *argv[])
char fsid[BTRFS_UUID_UNPARSED_SIZE] = {0};
crc32c_optimization_init();
printf("btrfs-convert from %s\n\n", PACKAGE_STRING);
while(1) {
enum { GETOPT_VAL_NO_PROGRESS = 256, GETOPT_VAL_CHECKSUM,