#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <getopt.h>
#include <sys/ioctl.h>
#include <errno.h>
"'btrfs filesystem balance' command is deprecated, please use\n"
"'btrfs balance start' command instead.";
+static int parse_one_profile(const char *profile, u64 *flags)
+{
+ if (!strcmp(profile, "raid0")) {
+ *flags |= BTRFS_BLOCK_GROUP_RAID0;
+ } else if (!strcmp(profile, "raid1")) {
+ *flags |= BTRFS_BLOCK_GROUP_RAID1;
+ } else if (!strcmp(profile, "raid10")) {
+ *flags |= BTRFS_BLOCK_GROUP_RAID10;
+ } else if (!strcmp(profile, "dup")) {
+ *flags |= BTRFS_BLOCK_GROUP_DUP;
+ } else if (!strcmp(profile, "single")) {
+ *flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE;
+ } else {
+ fprintf(stderr, "Unknown profile '%s'\n", profile);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int parse_profiles(char *profiles, u64 *flags)
+{
+ char *this_char;
+ char *save_ptr;
+
+ for (this_char = strtok_r(profiles, "|", &save_ptr);
+ this_char != NULL;
+ this_char = strtok_r(NULL, "|", &save_ptr)) {
+ if (parse_one_profile(this_char, flags))
+ return 1;
+ }
+
+ return 0;
+}
+
+static int parse_u64(const char *str, u64 *result)
+{
+ char *endptr;
+ u64 val;
+
+ val = strtoull(str, &endptr, 10);
+ if (*endptr)
+ return 1;
+
+ *result = val;
+ return 0;
+}
+
+static int parse_range(const char *range, u64 *start, u64 *end)
+{
+ char *dots;
+
+ dots = strstr(range, "..");
+ if (dots) {
+ const char *rest = dots + 2;
+ int skipped = 0;
+
+ *dots = 0;
+
+ if (!*rest) {
+ *end = (u64)-1;
+ skipped++;
+ } else {
+ if (parse_u64(rest, end))
+ return 1;
+ }
+ if (dots == range) {
+ *start = 0;
+ skipped++;
+ } else {
+ if (parse_u64(range, start))
+ return 1;
+ }
+
+ if (*start >= *end) {
+ fprintf(stderr, "Range %llu..%llu doesn't make "
+ "sense\n", (unsigned long long)*start,
+ (unsigned long long)*end);
+ return 1;
+ }
+
+ if (skipped <= 1)
+ return 0;
+ }
+
+ return 1;
+}
+
+static int parse_filters(char *filters, struct btrfs_balance_args *args)
+{
+ char *this_char;
+ char *value;
+ char *save_ptr;
+
+ if (!filters)
+ return 0;
+
+ for (this_char = strtok_r(filters, ",", &save_ptr);
+ this_char != NULL;
+ this_char = strtok_r(NULL, ",", &save_ptr)) {
+ if ((value = strchr(this_char, '=')) != NULL)
+ *value++ = 0;
+ if (!strcmp(this_char, "profiles")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the profiles filter requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_profiles(value, &args->profiles)) {
+ fprintf(stderr, "Invalid profiles argument\n");
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_PROFILES;
+ } else if (!strcmp(this_char, "usage")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the usage filter requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_u64(value, &args->usage) ||
+ args->usage < 1 || args->usage > 100) {
+ fprintf(stderr, "Invalid usage argument: %s\n",
+ value);
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_USAGE;
+ } else if (!strcmp(this_char, "devid")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the devid filter requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_u64(value, &args->devid) ||
+ args->devid == 0) {
+ fprintf(stderr, "Invalid devid argument: %s\n",
+ value);
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_DEVID;
+ } else if (!strcmp(this_char, "drange")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the drange filter requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_range(value, &args->pstart, &args->pend)) {
+ fprintf(stderr, "Invalid drange argument\n");
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_DRANGE;
+ } else if (!strcmp(this_char, "vrange")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the vrange filter requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_range(value, &args->vstart, &args->vend)) {
+ fprintf(stderr, "Invalid vrange argument\n");
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_VRANGE;
+ } else if (!strcmp(this_char, "convert")) {
+ if (!value || !*value) {
+ fprintf(stderr, "the convert option requires "
+ "an argument\n");
+ return 1;
+ }
+ if (parse_one_profile(value, &args->target)) {
+ fprintf(stderr, "Invalid convert argument\n");
+ return 1;
+ }
+ args->flags |= BTRFS_BALANCE_ARGS_CONVERT;
+ } else if (!strcmp(this_char, "soft")) {
+ args->flags |= BTRFS_BALANCE_ARGS_SOFT;
+ } else {
+ fprintf(stderr, "Unrecognized balance option '%s'\n",
+ this_char);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static void dump_balance_args(struct btrfs_balance_args *args)
+{
+ if (args->flags & BTRFS_BALANCE_ARGS_CONVERT) {
+ printf("converting, target=%llu, soft is %s",
+ (unsigned long long)args->target,
+ (args->flags & BTRFS_BALANCE_ARGS_SOFT) ? "on" : "off");
+ } else {
+ printf("balancing");
+ }
+
+ if (args->flags & BTRFS_BALANCE_ARGS_PROFILES)
+ printf(", profiles=%llu", (unsigned long long)args->profiles);
+ if (args->flags & BTRFS_BALANCE_ARGS_USAGE)
+ printf(", usage=%llu", (unsigned long long)args->usage);
+ if (args->flags & BTRFS_BALANCE_ARGS_DEVID)
+ printf(", devid=%llu", (unsigned long long)args->devid);
+ if (args->flags & BTRFS_BALANCE_ARGS_DRANGE)
+ printf(", drange=%llu..%llu",
+ (unsigned long long)args->pstart,
+ (unsigned long long)args->pend);
+ if (args->flags & BTRFS_BALANCE_ARGS_VRANGE)
+ printf(", vrange=%llu..%llu",
+ (unsigned long long)args->vstart,
+ (unsigned long long)args->vend);
+
+ printf("\n");
+}
+
+static void dump_ioctl_balance_args(struct btrfs_ioctl_balance_args *args)
+{
+ printf("Dumping filters: flags 0x%llx, state 0x%llx, force is %s\n",
+ (unsigned long long)args->flags, (unsigned long long)args->state,
+ (args->flags & BTRFS_BALANCE_FORCE) ? "on" : "off");
+ if (args->flags & BTRFS_BALANCE_DATA) {
+ printf(" DATA (flags 0x%llx): ",
+ (unsigned long long)args->data.flags);
+ dump_balance_args(&args->data);
+ }
+ if (args->flags & BTRFS_BALANCE_METADATA) {
+ printf(" METADATA (flags 0x%llx): ",
+ (unsigned long long)args->meta.flags);
+ dump_balance_args(&args->meta);
+ }
+ if (args->flags & BTRFS_BALANCE_SYSTEM) {
+ printf(" SYSTEM (flags 0x%llx): ",
+ (unsigned long long)args->sys.flags);
+ dump_balance_args(&args->sys);
+ }
+}
+
static int do_balance(const char *path, struct btrfs_ioctl_balance_args *args)
{
int fd;
return 0;
}
+static const char * const cmd_balance_start_usage[] = {
+ "btrfs [filesystem] balance start [options] <path>",
+ "Balance chunks across the devices",
+ "Balance and/or convert (change allocation profile of) chunks that",
+ "passed all filters in a comma-separated list of filters for a",
+ "particular chunk type. If filter list is not given balance all",
+ "chunks of that type. In case none of the -d, -m or -s options is",
+ "given balance all chunks in a filesystem.",
+ "",
+ "-d[filters] act on data chunks",
+ "-m[filters] act on metadata chunks",
+ "-s[filetrs] act on system chunks (only under -f)",
+ "-v be verbose",
+ "-f force reducing of metadata integrity",
+ NULL
+};
+
+static int cmd_balance_start(int argc, char **argv)
+{
+ struct btrfs_ioctl_balance_args args;
+ struct btrfs_balance_args *ptrs[] = { &args.data, &args.sys,
+ &args.meta, NULL };
+ int force = 0;
+ int verbose = 0;
+ int nofilters = 1;
+ int i;
+
+ memset(&args, 0, sizeof(args));
+
+ optind = 1;
+ while (1) {
+ int longindex;
+ static struct option longopts[] = {
+ { "data", optional_argument, NULL, 'd'},
+ { "metadata", optional_argument, NULL, 'm' },
+ { "system", optional_argument, NULL, 's' },
+ { "force", no_argument, NULL, 'f' },
+ { "verbose", no_argument, NULL, 'v' },
+ { 0, 0, 0, 0 }
+ };
+
+ int opt = getopt_long(argc, argv, "d::s::m::fv", longopts,
+ &longindex);
+ if (opt < 0)
+ break;
+
+ switch (opt) {
+ case 'd':
+ nofilters = 0;
+ args.flags |= BTRFS_BALANCE_DATA;
+
+ if (parse_filters(optarg, &args.data))
+ return 1;
+ break;
+ case 's':
+ nofilters = 0;
+ args.flags |= BTRFS_BALANCE_SYSTEM;
+
+ if (parse_filters(optarg, &args.sys))
+ return 1;
+ break;
+ case 'm':
+ nofilters = 0;
+ args.flags |= BTRFS_BALANCE_METADATA;
+
+ if (parse_filters(optarg, &args.meta))
+ return 1;
+ break;
+ case 'f':
+ force = 1;
+ break;
+ case 'v':
+ verbose = 1;
+ break;
+ default:
+ usage(cmd_balance_start_usage);
+ }
+ }
+
+ if (check_argc_exact(argc - optind, 1))
+ usage(cmd_balance_start_usage);
+
+ /*
+ * allow -s only under --force, otherwise do with system chunks
+ * the same thing we were ordered to do with meta chunks
+ */
+ if (args.flags & BTRFS_BALANCE_SYSTEM) {
+ if (!force) {
+ fprintf(stderr,
+"Refusing to explicitly operate on system chunks.\n"
+"Pass --force if you really want to do that.\n");
+ return 1;
+ }
+ } else if (args.flags & BTRFS_BALANCE_METADATA) {
+ args.flags |= BTRFS_BALANCE_SYSTEM;
+ memcpy(&args.sys, &args.meta,
+ sizeof(struct btrfs_balance_args));
+ }
+
+ if (nofilters) {
+ /* relocate everything - no filters */
+ args.flags |= BTRFS_BALANCE_TYPE_MASK;
+ }
+
+ /* drange makes sense only when devid is set */
+ for (i = 0; ptrs[i]; i++) {
+ if ((ptrs[i]->flags & BTRFS_BALANCE_ARGS_DRANGE) &&
+ !(ptrs[i]->flags & BTRFS_BALANCE_ARGS_DEVID)) {
+ fprintf(stderr, "drange filter can be used only if "
+ "devid filter is used\n");
+ return 1;
+ }
+ }
+
+ /* soft makes sense only when convert for corresponding type is set */
+ for (i = 0; ptrs[i]; i++) {
+ if ((ptrs[i]->flags & BTRFS_BALANCE_ARGS_SOFT) &&
+ !(ptrs[i]->flags & BTRFS_BALANCE_ARGS_CONVERT)) {
+ fprintf(stderr, "'soft' option can be used only if "
+ "changing profiles\n");
+ return 1;
+ }
+ }
+
+ if (force)
+ args.flags |= BTRFS_BALANCE_FORCE;
+ if (verbose)
+ dump_ioctl_balance_args(&args);
+
+ return do_balance(argv[optind], &args);
+}
+
+static const char * const cmd_balance_pause_usage[] = {
+ "btrfs [filesystem] balance pause <path>",
+ "Pause running balance",
+ NULL
+};
+
+static int cmd_balance_pause(int argc, char **argv)
+{
+ const char *path;
+ int fd;
+ int ret;
+ int e;
+
+ if (check_argc_exact(argc, 2))
+ usage(cmd_balance_pause_usage);
+
+ path = argv[1];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_PAUSE);
+ e = errno;
+ close(fd);
+
+ if (ret < 0) {
+ fprintf(stderr, "ERROR: balance pause on '%s' failed - %s\n",
+ path, (e == ENOTCONN) ? "Not running" : strerror(e));
+ return 19;
+ }
+
+ return 0;
+}
+
+static const char * const cmd_balance_cancel_usage[] = {
+ "btrfs [filesystem] balance cancel <path>",
+ "Cancel running or paused balance",
+ NULL
+};
+
+static int cmd_balance_cancel(int argc, char **argv)
+{
+ const char *path;
+ int fd;
+ int ret;
+ int e;
+
+ if (check_argc_exact(argc, 2))
+ usage(cmd_balance_cancel_usage);
+
+ path = argv[1];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ ret = ioctl(fd, BTRFS_IOC_BALANCE_CTL, BTRFS_BALANCE_CTL_CANCEL);
+ e = errno;
+ close(fd);
+
+ if (ret < 0) {
+ fprintf(stderr, "ERROR: balance cancel on '%s' failed - %s\n",
+ path, (e == ENOTCONN) ? "Not in progress" : strerror(e));
+ return 19;
+ }
+
+ return 0;
+}
+
+static const char * const cmd_balance_resume_usage[] = {
+ "btrfs [filesystem] balance resume <path>",
+ "Resume interrupted balance",
+ NULL
+};
+
+static int cmd_balance_resume(int argc, char **argv)
+{
+ struct btrfs_ioctl_balance_args args;
+ const char *path;
+ int fd;
+ int ret;
+ int e;
+
+ if (check_argc_exact(argc, 2))
+ usage(cmd_balance_resume_usage);
+
+ path = argv[1];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ memset(&args, 0, sizeof(args));
+ args.flags |= BTRFS_BALANCE_RESUME;
+
+ ret = ioctl(fd, BTRFS_IOC_BALANCE_V2, &args);
+ e = errno;
+ close(fd);
+
+ if (ret < 0) {
+ if (e == ECANCELED) {
+ if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
+ fprintf(stderr, "balance paused by user\n");
+ if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
+ fprintf(stderr, "balance canceled by user\n");
+ } else if (e == ENOTCONN || e == EINPROGRESS) {
+ fprintf(stderr, "ERROR: balance resume on '%s' "
+ "failed - %s\n", path,
+ (e == ENOTCONN) ? "Not in progress" :
+ "Already running");
+ return 19;
+ } else {
+ fprintf(stderr,
+"ERROR: error during balancing '%s' - %s\n"
+"There may be more info in syslog - try dmesg | tail\n", path, strerror(e));
+ return 19;
+ }
+ } else {
+ printf("Done, had to relocate %llu out of %llu chunks\n",
+ (unsigned long long)args.stat.completed,
+ (unsigned long long)args.stat.considered);
+ }
+
+ return 0;
+}
+
+static const char * const cmd_balance_status_usage[] = {
+ "btrfs [filesystem] balance status [-v] <path>",
+ "Show status of running or paused balance",
+ "",
+ "-v be verbose",
+ NULL
+};
+
+static int cmd_balance_status(int argc, char **argv)
+{
+ struct btrfs_ioctl_balance_args args;
+ const char *path;
+ int fd;
+ int verbose = 0;
+ int ret;
+ int e;
+
+ optind = 1;
+ while (1) {
+ int longindex;
+ static struct option longopts[] = {
+ { "verbose", no_argument, NULL, 'v' },
+ { 0, 0, 0, 0}
+ };
+
+ int opt = getopt_long(argc, argv, "v", longopts, &longindex);
+ if (opt < 0)
+ break;
+
+ switch (opt) {
+ case 'v':
+ verbose = 1;
+ break;
+ default:
+ usage(cmd_balance_status_usage);
+ }
+ }
+
+ if (check_argc_exact(argc - optind, 1))
+ usage(cmd_balance_status_usage);
+
+ path = argv[optind];
+
+ fd = open_file_or_dir(path);
+ if (fd < 0) {
+ fprintf(stderr, "ERROR: can't access to '%s'\n", path);
+ return 12;
+ }
+
+ ret = ioctl(fd, BTRFS_IOC_BALANCE_PROGRESS, &args);
+ e = errno;
+ close(fd);
+
+ if (ret < 0) {
+ fprintf(stderr, "ERROR: balance status on '%s' failed - %s\n",
+ path, (e == ENOTCONN) ? "Not in progress" : strerror(e));
+ return 19;
+ }
+
+ if (args.state & BTRFS_BALANCE_STATE_RUNNING) {
+ printf("Balance on '%s' is running", path);
+ if (args.state & BTRFS_BALANCE_STATE_CANCEL_REQ)
+ printf(", cancel requested\n");
+ else if (args.state & BTRFS_BALANCE_STATE_PAUSE_REQ)
+ printf(", pause requested\n");
+ else
+ printf("\n");
+ } else {
+ printf("Balance on '%s' is paused\n", path);
+ }
+
+ printf("%llu out of about %llu chunks balanced (%llu considered), "
+ "%3.f%% left\n", (unsigned long long)args.stat.completed,
+ (unsigned long long)args.stat.expected,
+ (unsigned long long)args.stat.considered,
+ 100 * (1 - (float)args.stat.completed/args.stat.expected));
+
+ if (verbose)
+ dump_ioctl_balance_args(&args);
+
+ return 0;
+}
+
const struct cmd_group balance_cmd_group = {
balance_cmd_group_usage, balance_cmd_group_info, {
+ { "start", cmd_balance_start, cmd_balance_start_usage, NULL, 0 },
+ { "pause", cmd_balance_pause, cmd_balance_pause_usage, NULL, 0 },
+ { "cancel", cmd_balance_cancel, cmd_balance_cancel_usage, NULL, 0 },
+ { "resume", cmd_balance_resume, cmd_balance_resume_usage, NULL, 0 },
+ { "status", cmd_balance_status, cmd_balance_status_usage, NULL, 0 },
{ 0, 0, 0, 0, 0 }
}
};
projects / platform / upstream / btrfs-progs.git / commitdiff