#include <sys/ioctl.h>
#include <errno.h>
#include <sys/stat.h>
+#include <getopt.h>
#include "kerncompat.h"
#include "ctree.h"
#include "ioctl.h"
#include "utils.h"
+#include "volumes.h"
+#include "cmds-fi-usage.h"
#include "commands.h"
-/* FIXME - imported cruft, fix sparse errors and warnings */
-#ifdef __CHECKER__
-#define BLKGETSIZE64 0
-#define BTRFS_IOC_SNAP_CREATE_V2 0
-#define BTRFS_VOL_NAME_MAX 255
-struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
-static inline int ioctl(int fd, int define, void *arg) { return 0; }
-#endif
-
static const char * const device_cmd_group_usage[] = {
"btrfs device <command> [<args>]",
NULL
};
-static const char * const cmd_add_dev_usage[] = {
- "btrfs device add <device> [<device>...] <path>",
+static const char * const cmd_device_add_usage[] = {
+ "btrfs device add [options] <device> [<device>...] <path>",
"Add a device to a filesystem",
+ "-K|--nodiscard do not perform whole device TRIM",
+ "-f|--force force overwrite existing filesystem on the disk",
NULL
};
-static int cmd_add_dev(int argc, char **argv)
+static int cmd_device_add(int argc, char **argv)
{
char *mntpnt;
- int i, fdmnt, ret=0, e;
+ int i, fdmnt, ret = 0;
+ DIR *dirstream = NULL;
+ int discard = 1;
+ int force = 0;
+ int last_dev;
+
+ while (1) {
+ int c;
+ static const struct option long_options[] = {
+ { "nodiscard", optional_argument, NULL, 'K'},
+ { "force", no_argument, NULL, 'f'},
+ { NULL, 0, NULL, 0}
+ };
+
+ c = getopt_long(argc, argv, "Kf", long_options, NULL);
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'K':
+ discard = 0;
+ break;
+ case 'f':
+ force = 1;
+ break;
+ default:
+ usage(cmd_device_add_usage);
+ }
+ }
- if (check_argc_min(argc, 3))
- usage(cmd_add_dev_usage);
+ if (check_argc_min(argc - optind, 2))
+ usage(cmd_device_add_usage);
- mntpnt = argv[argc - 1];
+ last_dev = argc - 1;
+ mntpnt = argv[last_dev];
- fdmnt = open_file_or_dir(mntpnt);
- if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
- return 12;
- }
+ fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
+ if (fdmnt < 0)
+ return 1;
- for (i = 1; i < argc - 1; i++ ){
+ for (i = optind; i < last_dev; i++){
struct btrfs_ioctl_vol_args ioctl_args;
int devfd, res;
u64 dev_block_count = 0;
- struct stat st;
- int mixed = 0;
+ char *path;
- res = check_mounted(argv[i]);
- if (res < 0) {
- fprintf(stderr, "error checking %s mount status\n",
- argv[i]);
- ret++;
- continue;
- }
- if (res == 1) {
- fprintf(stderr, "%s is mounted\n", argv[i]);
+ res = test_dev_for_mkfs(argv[i], force);
+ if (res) {
ret++;
continue;
}
devfd = open(argv[i], O_RDWR);
- if (!devfd) {
- fprintf(stderr, "ERROR: Unable to open device '%s'\n", argv[i]);
- close(devfd);
+ if (devfd < 0) {
+ error("unable to open device '%s'", argv[i]);
ret++;
continue;
}
- res = fstat(devfd, &st);
+
+ res = btrfs_prepare_device(devfd, argv[i], &dev_block_count, 0,
+ PREP_DEVICE_ZERO_END | PREP_DEVICE_VERBOSE |
+ (discard ? PREP_DEVICE_DISCARD : 0));
+ close(devfd);
if (res) {
- fprintf(stderr, "ERROR: Unable to stat '%s'\n", argv[i]);
- close(devfd);
ret++;
- continue;
- }
- if (!S_ISBLK(st.st_mode)) {
- fprintf(stderr, "ERROR: '%s' is not a block device\n", argv[i]);
- close(devfd);
- ret++;
- continue;
+ goto error_out;
}
- res = btrfs_prepare_device(devfd, argv[i], 1, &dev_block_count, &mixed);
- if (res) {
- fprintf(stderr, "ERROR: Unable to init '%s'\n", argv[i]);
- close(devfd);
+ path = canonicalize_path(argv[i]);
+ if (!path) {
+ error("could not canonicalize pathname '%s': %s",
+ argv[i], strerror(errno));
ret++;
- continue;
+ goto error_out;
}
- close(devfd);
- strncpy(ioctl_args.name, argv[i], BTRFS_PATH_NAME_MAX);
- ioctl_args.name[BTRFS_PATH_NAME_MAX-1] = 0;
+ memset(&ioctl_args, 0, sizeof(ioctl_args));
+ strncpy_null(ioctl_args.name, path);
res = ioctl(fdmnt, BTRFS_IOC_ADD_DEV, &ioctl_args);
- e = errno;
- if(res<0){
- fprintf(stderr, "ERROR: error adding the device '%s' - %s\n",
- argv[i], strerror(e));
+ if (res < 0) {
+ error("error adding device '%s': %s",
+ path, strerror(errno));
ret++;
}
-
+ free(path);
}
- close(fdmnt);
- if (ret)
- return ret+20;
- else
- return 0;
+error_out:
+ close_file_or_dir(fdmnt, dirstream);
+ return !!ret;
}
-static const char * const cmd_rm_dev_usage[] = {
- "btrfs device delete <device> [<device>...] <path>",
- "Remove a device from a filesystem",
- NULL
-};
-
-static int cmd_rm_dev(int argc, char **argv)
+static int _cmd_device_remove(int argc, char **argv,
+ const char * const *usagestr)
{
char *mntpnt;
- int i, fdmnt, ret=0, e;
+ int i, fdmnt, ret = 0;
+ DIR *dirstream = NULL;
- if (check_argc_min(argc, 3))
- usage(cmd_rm_dev_usage);
+ clean_args_no_options(argc, argv, usagestr);
+
+ if (check_argc_min(argc - optind, 2))
+ usage(usagestr);
mntpnt = argv[argc - 1];
- fdmnt = open_file_or_dir(mntpnt);
- if (fdmnt < 0) {
- fprintf(stderr, "ERROR: can't access to '%s'\n", mntpnt);
- return 12;
- }
+ fdmnt = btrfs_open_dir(mntpnt, &dirstream, 1);
+ if (fdmnt < 0)
+ return 1;
- for(i=1 ; i < argc - 1; i++ ){
+ for(i = optind; i < argc - 1; i++) {
struct btrfs_ioctl_vol_args arg;
+ struct btrfs_ioctl_vol_args_v2 argv2 = {0};
+ int is_devid = 0;
int res;
- strncpy(arg.name, argv[i], BTRFS_PATH_NAME_MAX);
- arg.name[BTRFS_PATH_NAME_MAX-1] = 0;
- res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
- e = errno;
- if(res<0){
- fprintf(stderr, "ERROR: error removing the device '%s' - %s\n",
- argv[i], strerror(e));
+ if (string_is_numerical(argv[i])) {
+ argv2.devid = arg_strtou64(argv[i]);
+ argv2.flags = BTRFS_DEVICE_SPEC_BY_ID;
+ is_devid = 1;
+ } else if (is_block_device(argv[i]) == 1 ||
+ strcmp(argv[i], "missing") == 0) {
+ strncpy_null(argv2.name, argv[i]);
+ } else {
+ error("not a block device: %s", argv[i]);
+ ret++;
+ continue;
+ }
+
+ /*
+ * Positive values are from BTRFS_ERROR_DEV_*,
+ * otherwise it's a generic error, one of errnos
+ */
+ res = ioctl(fdmnt, BTRFS_IOC_RM_DEV_V2, &argv2);
+
+ /*
+ * If BTRFS_IOC_RM_DEV_V2 is not supported we get ENOTTY and if
+ * argv2.flags includes a flag which kernel doesn't understand then
+ * we shall get EOPNOTSUPP
+ */
+ if (res < 0 && (errno == ENOTTY || errno == EOPNOTSUPP)) {
+ if (is_devid) {
+ error("device delete by id failed: %s",
+ strerror(errno));
+ ret++;
+ continue;
+ }
+ memset(&arg, 0, sizeof(arg));
+ strncpy_null(arg.name, argv[i]);
+ res = ioctl(fdmnt, BTRFS_IOC_RM_DEV, &arg);
+ }
+
+ if (res) {
+ const char *msg;
+
+ if (res > 0)
+ msg = btrfs_err_str(res);
+ else
+ msg = strerror(errno);
+ if (is_devid) {
+ error("error removing devid %llu: %s",
+ (unsigned long long)argv2.devid, msg);
+ } else {
+ error("error removing device '%s': %s",
+ argv[i], msg);
+ }
ret++;
}
}
- close(fdmnt);
- if( ret)
- return ret+20;
- else
- return 0;
+ close_file_or_dir(fdmnt, dirstream);
+ return !!ret;
}
-static const char * const cmd_scan_dev_usage[] = {
- "btrfs device scan [<device>...]",
- "Scan devices for a btrfs filesystem",
+static const char * const cmd_device_remove_usage[] = {
+ "btrfs device remove <device>|<devid> [<device>|<devid>...] <path>",
+ "Remove a device from a filesystem",
+ NULL
+};
+
+static int cmd_device_remove(int argc, char **argv)
+{
+ return _cmd_device_remove(argc, argv, cmd_device_remove_usage);
+}
+
+static const char * const cmd_device_delete_usage[] = {
+ "btrfs device delete <device>|<devid> [<device>|<devid>...] <path>",
+ "Remove a device from a filesystem",
NULL
};
-static int cmd_scan_dev(int argc, char **argv)
+static int cmd_device_delete(int argc, char **argv)
{
- int i, fd, e;
- int checklist = 1;
- int devstart = 1;
+ return _cmd_device_remove(argc, argv, cmd_device_delete_usage);
+}
- if( argc > 1 && !strcmp(argv[1],"--all-devices")){
- if (check_argc_max(argc, 2))
- usage(cmd_scan_dev_usage);
+static const char * const cmd_device_scan_usage[] = {
+ "btrfs device scan [(-d|--all-devices)|<device> [<device>...]]",
+ "Scan devices for a btrfs filesystem",
+ " -d|--all-devices (deprecated)",
+ NULL
+};
- checklist = 0;
- devstart += 1;
+static int cmd_device_scan(int argc, char **argv)
+{
+ int i;
+ int devstart;
+ int all = 0;
+ int ret = 0;
+
+ while (1) {
+ int c;
+ static const struct option long_options[] = {
+ { "all-devices", no_argument, NULL, 'd'},
+ { NULL, 0, NULL, 0}
+ };
+
+ c = getopt_long(argc, argv, "d", long_options, NULL);
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'd':
+ all = 1;
+ break;
+ default:
+ usage(cmd_device_scan_usage);
+ }
}
+ devstart = optind;
- if(argc<=devstart){
-
- int ret;
+ if (all && check_argc_max(argc - optind, 1))
+ usage(cmd_device_scan_usage);
+ if (all || argc - optind == 0) {
printf("Scanning for Btrfs filesystems\n");
- if(checklist)
- ret = btrfs_scan_block_devices(1);
- else
- ret = btrfs_scan_one_dir("/dev", 1);
- if (ret){
- fprintf(stderr, "ERROR: error %d while scanning\n", ret);
- return 18;
+ ret = btrfs_scan_lblkid();
+ error_on(ret, "error %d while scanning", ret);
+ ret = btrfs_register_all_devices();
+ error_on(ret, "there are %d errors while registering devices", ret);
+ goto out;
+ }
+
+ for( i = devstart ; i < argc ; i++ ){
+ char *path;
+
+ if (is_block_device(argv[i]) != 1) {
+ error("not a block device: %s", argv[i]);
+ ret = 1;
+ goto out;
+ }
+ path = canonicalize_path(argv[i]);
+ if (!path) {
+ error("could not canonicalize path '%s': %s",
+ argv[i], strerror(errno));
+ ret = 1;
+ goto out;
}
- return 0;
+ printf("Scanning for Btrfs filesystems in '%s'\n", path);
+ if (btrfs_register_one_device(path) != 0) {
+ ret = 1;
+ free(path);
+ goto out;
+ }
+ free(path);
}
+out:
+ return !!ret;
+}
+
+static const char * const cmd_device_ready_usage[] = {
+ "btrfs device ready <device>",
+ "Check device to see if it has all of its devices in cache for mounting",
+ NULL
+};
+
+static int cmd_device_ready(int argc, char **argv)
+{
+ struct btrfs_ioctl_vol_args args;
+ int fd;
+ int ret;
+ char *path;
+
+ clean_args_no_options(argc, argv, cmd_device_ready_usage);
+
+ if (check_argc_exact(argc - optind, 1))
+ usage(cmd_device_ready_usage);
+
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
- return 10;
+ return 1;
}
- for( i = devstart ; i < argc ; i++ ){
- struct btrfs_ioctl_vol_args args;
- int ret;
+ path = canonicalize_path(argv[optind]);
+ if (!path) {
+ error("could not canonicalize pathname '%s': %s",
+ argv[optind], strerror(errno));
+ ret = 1;
+ goto out;
+ }
- printf("Scanning for Btrfs filesystems in '%s'\n", argv[i]);
+ if (is_block_device(path) != 1) {
+ error("not a block device: %s", path);
+ ret = 1;
+ goto out;
+ }
- strncpy(args.name, argv[i], BTRFS_PATH_NAME_MAX);
- args.name[BTRFS_PATH_NAME_MAX-1] = 0;
- /*
- * FIXME: which are the error code returned by this ioctl ?
- * it seems that is impossible to understand if there no is
- * a btrfs filesystem from an I/O error !!!
- */
- ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args);
- e = errno;
-
- if( ret < 0 ){
- close(fd);
- fprintf(stderr, "ERROR: unable to scan the device '%s' - %s\n",
- argv[i], strerror(e));
- return 11;
- }
+ memset(&args, 0, sizeof(args));
+ strncpy_null(args.name, path);
+ ret = ioctl(fd, BTRFS_IOC_DEVICES_READY, &args);
+ if (ret < 0) {
+ error("unable to determine if device '%s' is ready for mount: %s",
+ path, strerror(errno));
+ ret = 1;
}
+out:
+ free(path);
close(fd);
- return 0;
+ return ret;
+}
+
+static const char * const cmd_device_stats_usage[] = {
+ "btrfs device stats [-z] <path>|<device>",
+ "Show current device IO stats.",
+ "",
+ "-z show current stats and reset values to zero",
+ NULL
+};
+
+static int cmd_device_stats(int argc, char **argv)
+{
+ char *dev_path;
+ struct btrfs_ioctl_fs_info_args fi_args;
+ struct btrfs_ioctl_dev_info_args *di_args = NULL;
+ int ret;
+ int fdmnt;
+ int i;
+ int c;
+ int err = 0;
+ __u64 flags = 0;
+ DIR *dirstream = NULL;
+
+ while ((c = getopt(argc, argv, "z")) != -1) {
+ switch (c) {
+ case 'z':
+ flags = BTRFS_DEV_STATS_RESET;
+ break;
+ case '?':
+ default:
+ usage(cmd_device_stats_usage);
+ }
+ }
+
+ if (check_argc_exact(argc - optind, 1))
+ usage(cmd_device_stats_usage);
+
+ dev_path = argv[optind];
+
+ fdmnt = open_path_or_dev_mnt(dev_path, &dirstream, 1);
+ if (fdmnt < 0)
+ return 1;
+
+ ret = get_fs_info(dev_path, &fi_args, &di_args);
+ if (ret) {
+ error("getting dev info for devstats failed: %s",
+ strerror(-ret));
+ err = 1;
+ goto out;
+ }
+ if (!fi_args.num_devices) {
+ error("no devices found");
+ err = 1;
+ goto out;
+ }
+
+ for (i = 0; i < fi_args.num_devices; i++) {
+ struct btrfs_ioctl_get_dev_stats args = {0};
+ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX + 1];
+
+ strncpy((char *)path, (char *)di_args[i].path,
+ BTRFS_DEVICE_PATH_NAME_MAX);
+ path[BTRFS_DEVICE_PATH_NAME_MAX] = '\0';
+
+ args.devid = di_args[i].devid;
+ args.nr_items = BTRFS_DEV_STAT_VALUES_MAX;
+ args.flags = flags;
+
+ if (ioctl(fdmnt, BTRFS_IOC_GET_DEV_STATS, &args) < 0) {
+ error("DEV_STATS ioctl failed on %s: %s",
+ path, strerror(errno));
+ err = 1;
+ } else {
+ char *canonical_path;
+
+ canonical_path = canonicalize_path((char *)path);
+
+ /* No path when device is missing. */
+ if (!canonical_path) {
+ canonical_path = malloc(32);
+ if (!canonical_path) {
+ error("not enough memory for path buffer");
+ goto out;
+ }
+ snprintf(canonical_path, 32,
+ "devid:%llu", args.devid);
+ }
+
+ if (args.nr_items >= BTRFS_DEV_STAT_WRITE_ERRS + 1)
+ printf("[%s].write_io_errs %llu\n",
+ canonical_path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_WRITE_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_READ_ERRS + 1)
+ printf("[%s].read_io_errs %llu\n",
+ canonical_path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_READ_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_FLUSH_ERRS + 1)
+ printf("[%s].flush_io_errs %llu\n",
+ canonical_path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_FLUSH_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_CORRUPTION_ERRS + 1)
+ printf("[%s].corruption_errs %llu\n",
+ canonical_path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_CORRUPTION_ERRS]);
+ if (args.nr_items >= BTRFS_DEV_STAT_GENERATION_ERRS + 1)
+ printf("[%s].generation_errs %llu\n",
+ canonical_path,
+ (unsigned long long) args.values[
+ BTRFS_DEV_STAT_GENERATION_ERRS]);
+
+ free(canonical_path);
+ }
+ }
+
+out:
+ free(di_args);
+ close_file_or_dir(fdmnt, dirstream);
+
+ return err;
+}
+
+static const char * const cmd_device_usage_usage[] = {
+ "btrfs device usage [options] <path> [<path>..]",
+ "Show detailed information about internal allocations in devices.",
+ HELPINFO_UNITS_SHORT_LONG,
+ NULL
+};
+
+static int _cmd_device_usage(int fd, char *path, unsigned unit_mode)
+{
+ int i;
+ int ret = 0;
+ struct chunk_info *chunkinfo = NULL;
+ struct device_info *devinfo = NULL;
+ int chunkcount = 0;
+ int devcount = 0;
+
+ ret = load_chunk_and_device_info(fd, &chunkinfo, &chunkcount, &devinfo,
+ &devcount);
+ if (ret)
+ goto out;
+
+ for (i = 0; i < devcount; i++) {
+ printf("%s, ID: %llu\n", devinfo[i].path, devinfo[i].devid);
+ print_device_sizes(fd, &devinfo[i], unit_mode);
+ print_device_chunks(fd, &devinfo[i], chunkinfo, chunkcount,
+ unit_mode);
+ printf("\n");
+ }
+
+out:
+ free(devinfo);
+ free(chunkinfo);
+
+ return ret;
}
+static int cmd_device_usage(int argc, char **argv)
+{
+ unsigned unit_mode;
+ int ret = 0;
+ int i;
+
+ unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
+
+ clean_args_no_options(argc, argv, cmd_device_usage_usage);
+
+ if (check_argc_min(argc - optind, 1))
+ usage(cmd_device_usage_usage);
+
+ for (i = optind; i < argc; i++) {
+ int fd;
+ DIR *dirstream = NULL;
+
+ if (i > 1)
+ printf("\n");
+
+ fd = btrfs_open_dir(argv[i], &dirstream, 1);
+ if (fd < 0) {
+ ret = 1;
+ break;
+ }
+
+ ret = _cmd_device_usage(fd, argv[i], unit_mode);
+ close_file_or_dir(fd, dirstream);
+
+ if (ret)
+ break;
+ }
+
+ return !!ret;
+}
+
+static const char device_cmd_group_info[] =
+"manage and query devices in the filesystem";
+
const struct cmd_group device_cmd_group = {
- device_cmd_group_usage, NULL, {
- { "add", cmd_add_dev, cmd_add_dev_usage, NULL, 0 },
- { "delete", cmd_rm_dev, cmd_rm_dev_usage, NULL, 0 },
- { "scan", cmd_scan_dev, cmd_scan_dev_usage, NULL, 0 },
- { 0, 0, 0, 0, 0 }
+ device_cmd_group_usage, device_cmd_group_info, {
+ { "add", cmd_device_add, cmd_device_add_usage, NULL, 0 },
+ { "delete", cmd_device_delete, cmd_device_delete_usage, NULL,
+ CMD_ALIAS },
+ { "remove", cmd_device_remove, cmd_device_remove_usage, NULL, 0 },
+ { "scan", cmd_device_scan, cmd_device_scan_usage, NULL, 0 },
+ { "ready", cmd_device_ready, cmd_device_ready_usage, NULL, 0 },
+ { "stats", cmd_device_stats, cmd_device_stats_usage, NULL, 0 },
+ { "usage", cmd_device_usage,
+ cmd_device_usage_usage, NULL, 0 },
+ NULL_CMD_STRUCT
}
};