diff options
Diffstat (limited to 'cmds-rescue.c')
| -rw-r--r-- | cmds-rescue.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/cmds-rescue.c b/cmds-rescue.c index 4bc798d2..c40088ad 100644 --- a/cmds-rescue.c +++ b/cmds-rescue.c @@ -20,6 +20,7 @@ #include <getopt.h> #include "ctree.h" +#include "volumes.h" #include "transaction.h" #include "disk-io.h" #include "commands.h" @@ -202,6 +203,51 @@ out: 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"; @@ -212,6 +258,8 @@ const struct cmd_group rescue_cmd_group = { { "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 } }; |