#include <getopt.h>
#include "ctree.h"
+#include "volumes.h"
#include "transaction.h"
#include "disk-io.h"
#include "commands.h"
#include "utils.h"
+#include "help.h"
static const char * const rescue_cmd_group_usage[] = {
"btrfs rescue <command> [options] <path>",
} else if (ret) {
error("%s is currently mounted", devname);
ret = -EBUSY;
+ goto out;
}
root = open_ctree(devname, 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
(unsigned long long)btrfs_super_log_root(sb),
(unsigned)btrfs_super_log_root_level(sb));
trans = btrfs_start_transaction(root, 1);
+ BUG_ON(IS_ERR(trans));
btrfs_set_super_log_root(sb, 0);
btrfs_set_super_log_root_level(sb, 0);
btrfs_commit_transaction(trans, root);
return !!ret;
}
+static const char * const cmd_rescue_fix_device_size_usage[] = {
+ "btrfs rescue fix-device-size <device>",
+ "Re-align device and super block sizes. Usable if newer kernel refuse to mount it due to mismatch super size",
+ "",
+ NULL
+};
+
+static int cmd_rescue_fix_device_size(int argc, char **argv)
+{
+ struct btrfs_fs_info *fs_info;
+ char *devname;
+ int ret;
+
+ clean_args_no_options(argc, argv, cmd_rescue_fix_device_size_usage);
+
+ if (check_argc_exact(argc, 2))
+ usage(cmd_rescue_fix_device_size_usage);
+
+ devname = argv[optind];
+ ret = check_mounted(devname);
+ if (ret < 0) {
+ error("could not check mount status: %s", strerror(-ret));
+ goto out;
+ } else if (ret) {
+ error("%s is currently mounted", devname);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ fs_info = open_ctree_fs_info(devname, 0, 0, 0, OPEN_CTREE_WRITES |
+ OPEN_CTREE_PARTIAL);
+ if (!fs_info) {
+ error("could not open btrfs");
+ ret = -EIO;
+ goto out;
+ }
+
+ ret = btrfs_fix_device_and_super_size(fs_info);
+ if (ret > 0)
+ ret = 0;
+ close_ctree(fs_info->tree_root);
+out:
+ return !!ret;
+}
+
static const char rescue_cmd_group_info[] =
"toolbox for specific rescue operations";
{ "super-recover", cmd_rescue_super_recover,
cmd_rescue_super_recover_usage, NULL, 0},
{ "zero-log", cmd_rescue_zero_log, cmd_rescue_zero_log_usage, NULL, 0},
+ { "fix-device-size", cmd_rescue_fix_device_size,
+ cmd_rescue_fix_device_size_usage, NULL, 0},
NULL_CMD_STRUCT
}
};