#include <lustre_ver.h>
#include <lustre_param.h>
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(a) ((sizeof(a)) / (sizeof((a)[0])))
+#endif /* !ARRAY_SIZE */
+
/* all functions */
static int lfs_setstripe(int argc, char **argv);
static int lfs_find(int argc, char **argv);
static int lfs_hsm_cancel(int argc, char **argv);
static int lfs_swap_layouts(int argc, char **argv);
static int lfs_mv(int argc, char **argv);
+static int lfs_ladvise(int argc, char **argv);
/* Setstripe and migrate share mostly the same parameters */
#define SSM_CMD_COMMON(cmd) \
"migrate a directory between MDTs.\n"
"usage: migrate --mdt-index <mdt_idx> [--verbose|-v] "
"<directory>\n"
- "\tmdt_idx: index of the destination MDT\n"},
- {"migrate", lfs_setstripe, 0,
+ "\tmdt_idx: index of the destination MDT\n"
+ "\n"
"migrate file objects from one OST "
"layout\nto another (may be not safe with concurent writes).\n"
- "usage: migrate "
+ "usage: migrate "
"[--stripe-count|-c] <stripe_count>\n"
- "[--stripe-index|-i] <start_ost_index>\n"
- "[--stripe-size|-S] <stripe_size>\n"
- "[--pool|-p] <pool_name>\n"
- "[--ost-list|-o] <ost_indices>\n"
- "[--block|-b]\n"
- "[--non-block|-n]\n"
- "<file|directory>\n"
+ " [--stripe-index|-i] <start_ost_index>\n"
+ " [--stripe-size|-S] <stripe_size>\n"
+ "
[--pool|-p] <pool_name>\n"
+ " [--ost-list|-o] <ost_indices>\n"
+ " [--block|-b]\n"
+ " [--non-block|-n]\n"
+ " <file|directory>\n"
"\tstripe_count: number of OSTs to stripe a file over\n"
"\tstripe_ost_index: index of the first OST to stripe a file over\n"
"\tstripe_size: number of bytes to store before moving to the next OST\n"
"use \"migrate\" instead.\n"
"usage: mv <directory|filename> [--mdt-index|-M] <mdt_index> "
"[--verbose|-v]\n"},
+ {"ladvise", lfs_ladvise, 0,
+ "Provide servers with advice about access patterns for a file.\n"
+ "usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]\n"
+ " [--background|-b]\n"
+ " {[--end|-e END[kMGT]] | [--length|-l LENGTH[kMGT]]}\n"
+ " <file> ..."},
{"help", Parser_help, 0, "help"},
{"exit", Parser_quit, 0, "quit"},
{"quit", Parser_quit, 0, "quit"},
/* Save the first error encountered. */
if (result2 == 0)
result2 = result;
- fprintf(stderr,
- "error: %s: %s file '%s' failed\n",
+ fprintf(stderr, "error: %s: %s file '%s' failed: %s\n",
argv[0], migrate_mode ? "migrate" : "create",
- fname);
+ fname,
+ pool_name_arg != NULL && result == EINVAL ?
+ "OST not in pool?" : strerror(result));
continue;
}
}
SWAP_LAYOUTS_KEEP_ATIME);
}
+static const char *const ladvise_names[] = LU_LADVISE_NAMES;
+
+static enum lu_ladvise_type lfs_get_ladvice(const char *string)
+{
+ enum lu_ladvise_type advice;
+
+ for (advice = 0;
+ advice < ARRAY_SIZE(ladvise_names); advice++) {
+ if (ladvise_names[advice] == NULL)
+ continue;
+ if (strcmp(string, ladvise_names[advice]) == 0)
+ return advice;
+ }
+
+ return LU_LADVISE_INVALID;
+}
+
+static int lfs_ladvise(int argc, char **argv)
+{
+ struct option long_opts[] = {
+ {"advice", required_argument, 0, 'a'},
+ {"background", no_argument, 0, 'b'},
+ {"end", required_argument, 0, 'e'},
+ {"start", required_argument, 0, 's'},
+ {"length", required_argument, 0, 'l'},
+ {0, 0, 0, 0}
+ };
+ char short_opts[] = "a:be:l:s:";
+ int c;
+ int rc = 0;
+ const char *path;
+ int fd;
+ struct lu_ladvise advice;
+ enum lu_ladvise_type advice_type = LU_LADVISE_INVALID;
+ unsigned long long start = 0;
+ unsigned long long end = LUSTRE_EOF;
+ unsigned long long length = 0;
+ unsigned long long size_units;
+ unsigned long long flags = 0;
+
+ optind = 0;
+ while ((c = getopt_long(argc, argv, short_opts,
+ long_opts, NULL)) != -1) {
+ switch (c) {
+ case 'a':
+ advice_type = lfs_get_ladvice(optarg);
+ if (advice_type == LU_LADVISE_INVALID) {
+ fprintf(stderr, "%s: invalid advice type "
+ "'%s'\n", argv[0], optarg);
+ fprintf(stderr, "Valid types:");
+
+ for (advice_type = 0;
+ advice_type < ARRAY_SIZE(ladvise_names);
+ advice_type++) {
+ if (ladvise_names[advice_type] == NULL)
+ continue;
+ fprintf(stderr, " %s",
+ ladvise_names[advice_type]);
+ }
+ fprintf(stderr, "\n");
+
+ return CMD_HELP;
+ }
+ break;
+ case 'b':
+ flags |= LF_ASYNC;
+ break;
+ case 'e':
+ size_units = 1;
+ rc = llapi_parse_size(optarg, &end,
+ &size_units, 0);
+ if (rc) {
+ fprintf(stderr, "%s: bad end offset '%s'\n",
+ argv[0], optarg);
+ return CMD_HELP;
+ }
+ break;
+ case 's':
+ size_units = 1;
+ rc = llapi_parse_size(optarg, &start,
+ &size_units, 0);
+ if (rc) {
+ fprintf(stderr, "%s: bad start offset "
+ "'%s'\n", argv[0], optarg);
+ return CMD_HELP;
+ }
+ break;
+ case 'l':
+ size_units = 1;
+ rc = llapi_parse_size(optarg, &length,
+ &size_units, 0);
+ if (rc) {
+ fprintf(stderr, "%s: bad length '%s'\n",
+ argv[0], optarg);
+ return CMD_HELP;
+ }
+ break;
+ case '?':
+ return CMD_HELP;
+ default:
+ fprintf(stderr, "%s: option '%s' unrecognized\n",
+ argv[0], argv[optind - 1]);
+ return CMD_HELP;
+ }
+ }
+
+ if (advice_type == LU_LADVISE_INVALID) {
+ fprintf(stderr, "%s: please give an advice type\n", argv[0]);
+ fprintf(stderr, "Valid types:");
+ for (advice_type = 0; advice_type < ARRAY_SIZE(ladvise_names);
+ advice_type++) {
+ if (ladvise_names[advice_type] == NULL)
+ continue;
+ fprintf(stderr, " %s", ladvise_names[advice_type]);
+ }
+ fprintf(stderr, "\n");
+ return CMD_HELP;
+ }
+
+ if (argc <= optind) {
+ fprintf(stderr, "%s: please give one or more file names\n",
+ argv[0]);
+ return CMD_HELP;
+ }
+
+ if (end != LUSTRE_EOF && length != 0 && end != start + length) {
+ fprintf(stderr, "%s: conflicting arguments of -l and -e\n",
+ argv[0]);
+ return CMD_HELP;
+ }
+
+ if (end == LUSTRE_EOF && length != 0)
+ end = start + length;
+
+ if (end <= start) {
+ fprintf(stderr, "%s: range [%llu, %llu] is invalid\n",
+ argv[0], start, end);
+ return CMD_HELP;
+ }
+
+ while (optind < argc) {
+ int rc2;
+
+ path = argv[optind++];
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "%s: cannot open file '%s': %s\n",
+ argv[0], path, strerror(errno));
+ rc2 = -errno;
+ goto next;
+ }
+
+ advice.lla_start = start;
+ advice.lla_end = end;
+ advice.lla_advice = advice_type;
+ advice.lla_padding = 0;
+ rc2 = llapi_ladvise(fd, flags, 1, &advice);
+ close(fd);
+ if (rc2 < 0) {
+ fprintf(stderr, "%s: cannot give advice '%s' to file "
+ "'%s': %s\n", argv[0],
+ ladvise_names[advice_type],
+ path, strerror(errno));
+ }
+next:
+ if (rc == 0 && rc2 < 0)
+ rc = rc2;
+ }
+ return rc;
+}
+
int main(int argc, char **argv)
{
int rc;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff