495 lines
13 KiB
Diff
495 lines
13 KiB
Diff
diff --git a/Makefile.in b/Makefile.in
|
|
index a82ff67..1e7bd54 100644
|
|
--- a/Makefile.in
|
|
+++ b/Makefile.in
|
|
@@ -24,7 +24,8 @@ PROGRAMS=\
|
|
thin_dump \
|
|
thin_restore \
|
|
thin_repair \
|
|
- thin_rmap
|
|
+ thin_rmap \
|
|
+ thin_metadata_size
|
|
|
|
all: $(PROGRAMS)
|
|
|
|
@@ -64,7 +65,7 @@ SOURCE=\
|
|
|
|
PDATA_OBJECTS=$(subst .cc,.o,$(SOURCE))
|
|
|
|
-PROGRAM_SOURCE=\
|
|
+CXX_PROGRAM_SOURCE=\
|
|
cache/check.cc \
|
|
\
|
|
thin-provisioning/thin_check.cc \
|
|
@@ -73,10 +74,15 @@ PROGRAM_SOURCE=\
|
|
thin-provisioning/thin_repair.cc \
|
|
thin-provisioning/thin_rmap.cc
|
|
|
|
+C_PROGRAM_SOURCE=\
|
|
+ thin-provisioning/thin_metadata_size.c
|
|
+
|
|
+CC:=@CC@
|
|
CXX:=@CXX@
|
|
OBJECTS:=$(subst .cc,.o,$(SOURCE))
|
|
TOP_DIR:=@top_srcdir@
|
|
TOP_BUILDDIR:=@top_builddir@
|
|
+CFLAGS+=-g -Wall -O3
|
|
CXXFLAGS+=-std=c++11 -g -Wall -fno-strict-aliasing
|
|
CXXFLAGS+=@CXXOPTIMISE_FLAG@
|
|
CXXFLAGS+=@CXXDEBUG_FLAG@
|
|
@@ -104,6 +110,14 @@ endif
|
|
|
|
.SUFFIXES: .d
|
|
|
|
+%.o: %.c
|
|
+ @echo " [CC] $<"
|
|
+ $(V) $(CC) -c $(INCLUDES) $(CFLAGS) -o $@ $<
|
|
+ @echo " [DEP] $<"
|
|
+ $(V) $(CC) -MM -MT $(subst .c,.o,$<) $(INCLUDES) $(CFLAGS) $< > $*.$$$$; \
|
|
+ sed 's,\([^ :]*\)\.o[ :]*,\1.o \1.gmo $* : Makefile ,g' < $*.$$$$ > $*.d; \
|
|
+ $(RM) $*.$$$$
|
|
+
|
|
%.o: %.cc
|
|
@echo " [CXX] $<"
|
|
$(V) $(CXX) -c $(INCLUDES) $(CXXFLAGS) -o $@ $<
|
|
@@ -195,6 +209,10 @@ thin_rmap: $(THIN_RMAP_OBJECTS) thin-provisioning/thin_rmap.o
|
|
@echo " [LD] $@"
|
|
$(V) $(CXX) $(CXXFLAGS) -o $@ $+ $(LIBS)
|
|
|
|
+thin_metadata_size: thin-provisioning/thin_metadata_size.o
|
|
+ @echo " [LD] $@"
|
|
+ $(V) $(CC) $(CFLAGS) -o $@ $+ -lm
|
|
+
|
|
#----------------------------------------------------------------
|
|
# Cache tools
|
|
|
|
@@ -221,29 +239,33 @@ cache_check: $(CACHE_CHECK_OBJECTS) cache/check.o
|
|
DEPEND_FILES=\
|
|
$(subst .cc,.d,$(SOURCE)) \
|
|
$(subst .cc,.d,$(TEST_SOURCE)) \
|
|
- $(subst .cc,.d,$(PROGRAM_SOURCE))
|
|
+ $(subst .cc,.d,$(CXX_PROGRAM_SOURCE)) \
|
|
+ $(subst .c,.d,$(C_PROGRAM_SOURCE))
|
|
|
|
.PHONY: clean distclean
|
|
|
|
clean:
|
|
find . -name \*.o -delete
|
|
find . -name \*.gmo -delete
|
|
- $(RM) $(DEPEND_FILES) $(TEST_PROGRAMS) $(PROGRAMS) $(GMOCK_OBJECTS) lib/*.a
|
|
+ find . -name \*.d -delete
|
|
+ $(RM) $(TEST_PROGRAMS) $(PROGRAMS) $(GMOCK_OBJECTS) lib/*.a
|
|
|
|
distclean: clean
|
|
$(RM) config.cache config.log config.status configure.h version.h Makefile unit-tests/Makefile
|
|
|
|
install: $(PROGRAMS)
|
|
$(INSTALL_DIR) $(BINDIR)
|
|
- $(INSTALL_PROGRAM) thin_check $(BINDIR)
|
|
- $(INSTALL_PROGRAM) thin_dump $(BINDIR)
|
|
- $(INSTALL_PROGRAM) thin_repair $(BINDIR)
|
|
- $(INSTALL_PROGRAM) thin_restore $(BINDIR)
|
|
- $(INSTALL_PROGRAM) thin_rmap $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_check $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_dump $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_repair $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_restore $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_rmap $(BINDIR)
|
|
+ $(INSTALL_PROGRAM) thin_metadata_size $(BINDIR)
|
|
$(INSTALL_DIR) $(MANPATH)/man8
|
|
$(INSTALL_DATA) man8/thin_check.8 $(MANPATH)/man8
|
|
$(INSTALL_DATA) man8/thin_dump.8 $(MANPATH)/man8
|
|
$(INSTALL_DATA) man8/thin_restore.8 $(MANPATH)/man8
|
|
+
|
|
.PHONY: install
|
|
|
|
ifeq ("@TESTING@", "yes")
|
|
diff --git a/configure.in b/configure.in
|
|
index 78d88c1..8f25002 100644
|
|
--- a/configure.in
|
|
+++ b/configure.in
|
|
@@ -30,6 +30,7 @@ dnl -- Setup the directory where autoconf has auxilary files
|
|
AC_CONFIG_AUX_DIR(autoconf)
|
|
AC_CANONICAL_TARGET([])
|
|
AC_PROG_CXX([g++])
|
|
+AC_PROG_CC([gcc])
|
|
AC_LANG(C++)
|
|
|
|
################################################################
|
|
diff --git a/thin-provisioning/thin_metadata_size.c b/thin-provisioning/thin_metadata_size.c
|
|
new file mode 100755
|
|
index 0000000..1f52d51
|
|
--- /dev/null
|
|
+++ b/thin-provisioning/thin_metadata_size.c
|
|
@@ -0,0 +1,370 @@
|
|
+/*
|
|
+ * Copyright (C) 2013 Red Hat, GmbH
|
|
+ *
|
|
+ * Calculates device-mapper thin privisioning
|
|
+ * metadata device size based on pool, block size and
|
|
+ * maximum expected thin provisioned devices and snapshots.
|
|
+ *
|
|
+ * This file is part of the thin-provisioning-tools source.
|
|
+ *
|
|
+ * thin-provisioning-tools is free software: you can redistribute it
|
|
+ * and/or modify it under the terms of the GNU General Public License
|
|
+ * as published by the Free Software Foundation, either version 3 of
|
|
+ * the License, or (at your option) any later version.
|
|
+ *
|
|
+ * thin-provisioning-tools is distributed in the hope that it will be
|
|
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
|
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
+ * GNU General Public License for more details.
|
|
+ *
|
|
+ * You should have received a copy of the GNU General Public License along
|
|
+ * with thin-provisioning-tools. If not, see
|
|
+ * <http://www.gnu.org/licenses/>.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <getopt.h>
|
|
+#include <libgen.h>
|
|
+#include <math.h>
|
|
+#include <stdio.h>
|
|
+#include <stdlib.h>
|
|
+#include <string.h>
|
|
+#include "version.h"
|
|
+
|
|
+#include <search.h>
|
|
+
|
|
+/*----------------------------------------------------------------*/
|
|
+
|
|
+enum numeric_options { BLOCKSIZE, POOLSIZE, MAXTHINS, NUMERIC, OPT_END};
|
|
+enum return_units { RETURN_BYTES, RETURN_SECTORS };
|
|
+enum numeric_type { NO_NUMBER, NUMBER, NUMBER_SHORT, NUMBER_LONG };
|
|
+typedef unsigned bool;
|
|
+enum bool_value { false = 0, true = 1};
|
|
+struct global {
|
|
+ char *prg; /* program name */
|
|
+
|
|
+ /* Unit representations in characters, strings and numeric factors. */
|
|
+ struct {
|
|
+ char *chars;
|
|
+ char **strings;
|
|
+ unsigned long long *factors;
|
|
+ } unit;
|
|
+
|
|
+ /* Command line option properties. */
|
|
+ struct options {
|
|
+ unsigned unit_idx;
|
|
+ char *s[OPT_END];
|
|
+ unsigned long long n[OPT_END];
|
|
+ } options;
|
|
+};
|
|
+
|
|
+static void exit_prg(struct global *g, int ret)
|
|
+{
|
|
+ if (g) {
|
|
+ unsigned u = OPT_END;
|
|
+
|
|
+ while (u--) {
|
|
+ if (g->options.s[u])
|
|
+ free (g->options.s[u]);
|
|
+ }
|
|
+
|
|
+ free(g);
|
|
+ }
|
|
+
|
|
+ exit(ret);
|
|
+}
|
|
+
|
|
+static void abort_prg(struct global *g, const char *msg)
|
|
+{
|
|
+ fprintf(stderr, "%s - %s\n", g ? g->prg : "fatal", msg);
|
|
+ exit_prg(g, 1);
|
|
+}
|
|
+
|
|
+static int unit_index(struct global *g, char *unit_string)
|
|
+{
|
|
+ unsigned len;
|
|
+
|
|
+ if (!unit_string)
|
|
+ return unit_index(g, "sectors");
|
|
+
|
|
+ len = strlen(unit_string);
|
|
+ if (len == 1) {
|
|
+ char *o = strchr(g->unit.chars, *unit_string);
|
|
+
|
|
+ if (o)
|
|
+ return o - g->unit.chars;
|
|
+
|
|
+ } else {
|
|
+ char **s;
|
|
+
|
|
+ for (s = g->unit.strings; *s; s++)
|
|
+ if (!strncmp(*s, unit_string, len))
|
|
+ return s - g->unit.strings;
|
|
+ }
|
|
+
|
|
+ return -1;
|
|
+}
|
|
+
|
|
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
|
|
+static struct global *init_prg(char *prg_path)
|
|
+{
|
|
+ unsigned u;
|
|
+ static char *unit_chars = "bskKmMgGtTpPeEzZyY";
|
|
+ static char *unit_strings[] = { "bytes", "sectors",
|
|
+ "kilobytes", "kibibytes", "megabytes", "mebibytes",
|
|
+ "gigabytes", "gibibytes", "terabytes", "tebibytes",
|
|
+ "petabytes", "pebibytes", "exabytes", "ebibytes",
|
|
+ "zetabytes", "zebibytes", "yottabytes", "yobibytes", NULL };
|
|
+ static unsigned long long unit_factors[ARRAY_SIZE(unit_strings) - 1] = { 1, 512, 1024, 1000 };
|
|
+ struct global *r = malloc(sizeof(*r));
|
|
+
|
|
+ if (!r)
|
|
+ abort_prg(r, "failed to allocate global context!");
|
|
+
|
|
+ memset(r, 0, sizeof(*r));
|
|
+
|
|
+ for (u = 4; unit_strings[u]; u += 2) {
|
|
+ unit_factors[u] = unit_factors[u-2] * unit_factors[2];
|
|
+ unit_factors[u+1] = unit_factors[u-1] * unit_factors[3];
|
|
+ }
|
|
+
|
|
+ r->prg = basename(prg_path);
|
|
+ r->unit.chars = unit_chars;
|
|
+ r->unit.strings = unit_strings;
|
|
+ r->unit.factors = unit_factors;
|
|
+ r->options.unit_idx = unit_index(r, NULL);
|
|
+
|
|
+ return r;
|
|
+}
|
|
+
|
|
+static unsigned long long bytes_per_sector(struct global *g)
|
|
+{
|
|
+ return g->unit.factors[unit_index(g, "sectors")];
|
|
+}
|
|
+
|
|
+static void check_opts(struct global *g)
|
|
+{
|
|
+ struct options *o = &g->options;
|
|
+
|
|
+ if (!o->n[BLOCKSIZE])
|
|
+ abort_prg(g, "block size required!");
|
|
+ else if (!o->n[POOLSIZE])
|
|
+ abort_prg(g, "pool size required!");
|
|
+ else if (!o->n[MAXTHINS])
|
|
+ abort_prg(g, "max thins required!");
|
|
+ else if (o->n[BLOCKSIZE] & (o->n[BLOCKSIZE] - 1))
|
|
+ abort_prg(g, "block size must be 2^^N");
|
|
+ else if (o->n[POOLSIZE] <= o->n[BLOCKSIZE])
|
|
+ abort_prg(g, "pool size must be larger than block size");
|
|
+}
|
|
+
|
|
+static unsigned long long to_bytes(struct global *g, char *sz, enum return_units unit, int *index)
|
|
+{
|
|
+ int idx;
|
|
+ unsigned long long r;
|
|
+ char *us = sz;
|
|
+
|
|
+ /* Get pointer to unit identifier. */
|
|
+ us += strspn(sz, "0123456789");
|
|
+ if (*us) {
|
|
+ idx = unit_index(g, us);
|
|
+ if (idx < 0)
|
|
+ abort_prg(g, "Invalid unit specifier!");
|
|
+
|
|
+ *us = 0;
|
|
+ *index = idx;
|
|
+ } else {
|
|
+ idx = unit_index(g, NULL);
|
|
+ us = NULL;
|
|
+ *index = -1;
|
|
+ }
|
|
+
|
|
+ r = atoll(sz) * g->unit.factors[idx];
|
|
+ return (!us || unit == RETURN_SECTORS) ? r / bytes_per_sector(g) : r;
|
|
+}
|
|
+
|
|
+static void printf_aligned(struct global *g, char *a, char *b, char *c, bool units, bool mandatory)
|
|
+{
|
|
+ char buf[80];
|
|
+
|
|
+ strcpy(buf, b);
|
|
+ if (units)
|
|
+ strcat(buf, mandatory ? "{" :"["), strcat(buf, g->unit.chars), strcat(buf, mandatory ? "}" : "]");
|
|
+
|
|
+ printf("\t%-4s%-44s%s\n", a, buf, c);
|
|
+}
|
|
+
|
|
+static void help(struct global *g)
|
|
+{
|
|
+ printf ("Thin Provisioning Metadata Device Size Calculator.\nUsage: %s [options]\n", g->prg);
|
|
+ printf_aligned(g, "-b", "--block-size BLOCKSIZE", "Block size of thin provisioned devices.", true, false);
|
|
+ printf_aligned(g, "-s", "--pool-size SIZE", "Size of pool device.", true, false);
|
|
+ printf_aligned(g, "-m", "--max-thins #MAXTHINS", "Maximum sum of all thin devices and snapshots.", true, false);
|
|
+ printf_aligned(g, "-u", "--unit ", "Output unit specifier.", true, true);
|
|
+ printf_aligned(g, "-n", "--numeric-only [short|long]", "Output numeric value only (optionally with short/long unit identifier).", false, false);
|
|
+ printf_aligned(g, "-h", "--help", "This help.", false, false);
|
|
+ printf_aligned(g, "-V", "--version", "Print thin provisioning tools version.", false, false);
|
|
+ exit_prg(g, 0);
|
|
+}
|
|
+
|
|
+static void version(struct global *g)
|
|
+{
|
|
+ printf("%s\n", THIN_PROVISIONING_TOOLS_VERSION);
|
|
+ exit_prg(g, 1);
|
|
+}
|
|
+
|
|
+static void check_unit(struct global *g, char *arg)
|
|
+{
|
|
+ int idx = unit_index(g, arg);
|
|
+
|
|
+ if (idx < 0)
|
|
+ abort_prg(g, "output unit specifier invalid!");
|
|
+
|
|
+ g->options.unit_idx = idx;
|
|
+}
|
|
+
|
|
+static void check_numeric_option(struct global *g, char *arg)
|
|
+{
|
|
+ if (g->options.n[NUMERIC] != NO_NUMBER)
|
|
+ abort_prg(g, "-n already given!");
|
|
+
|
|
+ g->options.n[NUMERIC] = NUMBER;
|
|
+
|
|
+ if (arg) {
|
|
+ bool unit_long = !strncmp("long", arg, strlen(arg));
|
|
+
|
|
+ if (!*arg || (strncmp("short", arg, strlen(arg)) && !unit_long))
|
|
+ abort_prg(g, "-n invalid option argument");
|
|
+
|
|
+ g->options.n[NUMERIC] = unit_long ? NUMBER_LONG : NUMBER_SHORT;
|
|
+ }
|
|
+}
|
|
+
|
|
+static void check_size(struct global *g, enum numeric_options o, char *arg)
|
|
+{
|
|
+ int idx;
|
|
+ bool valid_index = true;
|
|
+
|
|
+ if (g->options.n[o])
|
|
+ abort_prg(g, "option already given!");
|
|
+
|
|
+ g->options.n[o] = to_bytes(g, arg, o == MAXTHINS ? RETURN_BYTES : RETURN_SECTORS, &idx);
|
|
+ if (idx < 0) {
|
|
+ valid_index = false;
|
|
+ idx = g->options.unit_idx;
|
|
+ }
|
|
+
|
|
+ g->options.s[o] = malloc(strlen(arg) + strlen(g->unit.strings[idx]) + 1);
|
|
+ if (!g->options.s[o])
|
|
+ abort_prg(g, "failed to allocate string!");
|
|
+
|
|
+ strcpy(g->options.s[o], arg);
|
|
+ if (o != MAXTHINS || valid_index)
|
|
+ strcat(g->options.s[o], g->unit.strings[idx]);
|
|
+
|
|
+}
|
|
+
|
|
+static void parse_command_line(struct global *g, int argc, char **argv)
|
|
+{
|
|
+ int c;
|
|
+ static struct option long_options[] = {
|
|
+ {"block-size", required_argument, NULL, 'b' },
|
|
+ {"pool-size", required_argument, NULL, 's' },
|
|
+ {"max-thins", required_argument, NULL, 'm' },
|
|
+ {"unit", required_argument, NULL, 'u' },
|
|
+ {"numeric-only",optional_argument, NULL, 'n' },
|
|
+ {"help", no_argument, NULL, 'h' },
|
|
+ {"version", no_argument, NULL, 'V' },
|
|
+ {NULL, 0, NULL, 0 }
|
|
+ };
|
|
+
|
|
+ while ((c = getopt_long(argc, argv, "b:s:m:u:n::hV", long_options, NULL)) != -1) {
|
|
+ switch (c) {
|
|
+ case 'b':
|
|
+ check_size(g, BLOCKSIZE, optarg);
|
|
+ break;
|
|
+ case 's':
|
|
+ check_size(g, POOLSIZE, optarg);
|
|
+ break;
|
|
+ case 'm':
|
|
+ check_size(g, MAXTHINS, optarg);
|
|
+ break;
|
|
+ case 'u':
|
|
+ check_unit(g, optarg);
|
|
+ break;
|
|
+ case 'n':
|
|
+ check_numeric_option(g, optarg);
|
|
+ break;
|
|
+ case 'h':
|
|
+ help(g); /* exits */
|
|
+ case 'V':
|
|
+ version(g); /* exits */
|
|
+ default:
|
|
+ exit_prg(g, 1);
|
|
+ }
|
|
+ }
|
|
+
|
|
+ check_opts(g);
|
|
+}
|
|
+
|
|
+static const unsigned mappings_per_block(void)
|
|
+{
|
|
+ const struct {
|
|
+ const unsigned node;
|
|
+ const unsigned node_header;
|
|
+ const unsigned entry;
|
|
+ } btree_size = { 4096, 64, 16 };
|
|
+
|
|
+ return (btree_size.node - btree_size.node_header) / btree_size.entry;
|
|
+}
|
|
+
|
|
+static void print_precision(struct global *g, double r, unsigned idx)
|
|
+{
|
|
+ bool full = g->options.n[NUMERIC] == NO_NUMBER;
|
|
+ double rtrunc = truncl(r);
|
|
+
|
|
+ if (full)
|
|
+ printf("%s - ", g->prg);
|
|
+
|
|
+ if (r == rtrunc)
|
|
+ printf("%llu", (unsigned long long) r);
|
|
+ else
|
|
+ printf(r - rtrunc < 1E-2 ? "%0.2e" : "%0.2f", r);
|
|
+
|
|
+ if (full)
|
|
+ printf(" %s", g->unit.strings[idx]);
|
|
+ else if (g->options.n[NUMERIC] > NUMBER) {
|
|
+ if (g->options.n[NUMERIC] == NUMBER_SHORT)
|
|
+ printf("%c", g->unit.chars[idx]);
|
|
+ else
|
|
+ printf("%s", g->unit.strings[idx]);
|
|
+ }
|
|
+
|
|
+ if (full)
|
|
+ printf(" estimated metadata area size for \"--block-size=%s --pool-size=%s --max-thins=%s\"",
|
|
+ g->options.s[BLOCKSIZE], g->options.s[POOLSIZE], g->options.s[MAXTHINS]);
|
|
+
|
|
+ putchar('\n');
|
|
+}
|
|
+
|
|
+static void print_estimated_result(struct global *g)
|
|
+{
|
|
+ double r;
|
|
+
|
|
+ /* double-fold # of nodes, because they aren't fully populated in average */
|
|
+ r = (1.0 + (2 * g->options.n[POOLSIZE] / g->options.n[BLOCKSIZE] / mappings_per_block() + g->options.n[MAXTHINS])); /* in 4k blocks */
|
|
+ r *= 8 * bytes_per_sector(g); /* in bytes! */
|
|
+ r /= g->unit.factors[g->options.unit_idx]; /* in requested unit */
|
|
+
|
|
+ print_precision(g, r, g->options.unit_idx);
|
|
+}
|
|
+
|
|
+int main(int argc, char **argv)
|
|
+{
|
|
+ struct global *g = init_prg(*argv);
|
|
+
|
|
+ parse_command_line(g, argc, argv);
|
|
+ print_estimated_result(g);
|
|
+ exit_prg(g, 0);
|
|
+ return 0; /* Doesn't get here... */
|
|
+}
|