-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <fcntl.h>
#include <errno.h>
#include <string.h>
-#include <sys/mount.h>
-#include <mntent.h>
-#include <getopt.h>
#include "obdctl.h"
#include <lustre_ver.h>
#include <glob.h>
#define MAX_HW_SECTORS_KB_PATH "queue/max_hw_sectors_kb"
#define MAX_SECTORS_KB_PATH "queue/max_sectors_kb"
#define STRIPE_CACHE_SIZE "md/stripe_cache_size"
+#define MAXOPT 4096
#define MAX_RETRIES 99
int verbose = 0;
-int nomtab = 0;
-int fake = 0;
-int force = 0;
-int retry = 0;
int md_stripe_cache_size = 16384;
char *progname = NULL;
exit((out != stdout) ? EINVAL : 0);
}
-static int check_mtab_entry(char *spec1, char *spec2, char *mtpt, char *type)
-{
- FILE *fp;
- struct mntent *mnt;
-
- fp = setmntent(MOUNTED, "r");
- if (fp == NULL)
- return(0);
-
- while ((mnt = getmntent(fp)) != NULL) {
- if ((strcmp(mnt->mnt_fsname, spec1) == 0 ||
- strcmp(mnt->mnt_fsname, spec2) == 0) &&
- strcmp(mnt->mnt_dir, mtpt) == 0 &&
- strcmp(mnt->mnt_type, type) == 0) {
- endmntent(fp);
- return(EEXIST);
- }
- }
- endmntent(fp);
-
- return(0);
-}
-
-static int
-update_mtab_entry(char *spec, char *mtpt, char *type, char *opts,
- int flags, int freq, int pass)
-{
- FILE *fp;
- struct mntent mnt;
- int rc = 0;
-
- mnt.mnt_fsname = spec;
- mnt.mnt_dir = mtpt;
- mnt.mnt_type = type;
- mnt.mnt_opts = opts ? opts : "";
- mnt.mnt_freq = freq;
- mnt.mnt_passno = pass;
-
- fp = setmntent(MOUNTED, "a+");
- if (fp == NULL) {
- fprintf(stderr, "%s: setmntent(%s): %s:",
- progname, MOUNTED, strerror (errno));
- rc = 16;
- } else {
- if ((addmntent(fp, &mnt)) == 1) {
- fprintf(stderr, "%s: addmntent: %s:",
- progname, strerror (errno));
- rc = 16;
- }
- endmntent(fp);
- }
-
- return rc;
-}
-
/* Get rid of symbolic hostnames for tcp, since kernel can't do lookups */
#define MAXNIDSTR 1024
static char *convert_hostnames(char *s1)
{ "relatime", 0, MS_RELATIME }, /* set file access time on read */
{ "norelatime",1,MS_RELATIME }, /* do not set file access time on read */
#endif
+#ifdef MS_STRICTATIME
+ { "strictatime",0,MS_STRICTATIME }, /* update access time strictly */
+#endif
{ "auto", 0, 0 }, /* Can be mounted using -a */
{ "noauto", 0, 0 }, /* Can only be mounted explicitly */
{ "nousers", 1, 0 }, /* Forbid ordinary user to mount */
/* Replace options with subset of Lustre-specific options, and
fill in mount flags */
-int parse_options(char *orig_options, int *flagp)
+int parse_options(struct mount_opts *mop, char *orig_options, int *flagp)
{
char *options, *opt, *nextopt, *arg, *val;
if (val && strncmp(arg, "md_stripe_cache_size", 20) == 0) {
md_stripe_cache_size = atoi(val + 1);
} else if (val && strncmp(arg, "retry", 5) == 0) {
- retry = atoi(val + 1);
- if (retry > MAX_RETRIES)
- retry = MAX_RETRIES;
- else if (retry < 0)
- retry = 0;
+ mop->mo_retry = atoi(val + 1);
+ if (mop->mo_retry > MAX_RETRIES)
+ mop->mo_retry = MAX_RETRIES;
+ else if (mop->mo_retry < 0)
+ mop->mo_retry = 0;
} else if (val && strncmp(arg, "mgssec", 6) == 0) {
append_option(options, opt);
- } else if (strncmp(opt, "force", 5) == 0) {
+ } else if (strcmp(opt, "force") == 0) {
//XXX special check for 'force' option
- ++force;
- printf("force: %d\n", force);
+ ++mop->mo_force;
+ printf("force: %d\n", mop->mo_force);
} else if (parse_one_option(opt, flagp) == 0) {
/* pass this on as an option */
append_option(options, opt);
}
}
+#ifdef MS_STRICTATIME
+ /* set strictatime to default if NOATIME or RELATIME
+ not given explicit */
+ if (!(*flagp & (MS_NOATIME | MS_RELATIME)))
+ *flagp |= MS_STRICTATIME;
+#endif
strcpy(orig_options, options);
free(options);
return 0;
/* This is to tune the kernel for good SCSI performance.
* For that we set the value of /sys/block/{dev}/queue/max_sectors_kb
* to the value of /sys/block/{dev}/queue/max_hw_sectors_kb */
-int set_blockdev_tunables(char *source)
+int set_blockdev_tunables(char *source, int fan_out)
{
- glob_t glob_info;
+ glob_t glob_info = { 0 };
struct stat stat_buf;
char *chk_major, *chk_minor;
- char *savept, *dev;
+ char *savept = NULL, *dev;
char *ret_path;
char buf[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
char real_path[PATH_MAX] = {'\0'};
* match any entry under /sys/block/. In that case we need to
* match the major/minor number to find the entry under
* sys/block corresponding to /dev/X */
- dev = real_path + strlen(real_path);
- while (--dev > real_path && isdigit(*dev))
- *dev = 0;
- if (strncmp(real_path, "/dev/md_", 8) == 0)
- *dev = 0;
+ /* Don't chop tail digit on /dev/mapper/xxx, LU-478 */
+ if (strncmp(real_path, "/dev/mapper", 11) != 0) {
+ dev = real_path + strlen(real_path);
+ while (--dev > real_path && isdigit(*dev))
+ *dev = 0;
+
+ if (strncmp(real_path, "/dev/md_", 8) == 0)
+ *dev = 0;
+ }
rc = stat(real_path, &stat_buf);
if (rc) {
if (verbose)
fprintf(stderr, "warning: failed to read entries under "
"/sys/block\n");
+ globfree(&glob_info);
return rc;
}
if (verbose)
fprintf(stderr, "warning: opening %s: %s\n",
real_path, strerror(errno));
- return rc;
+ return 0;
}
if (atoi(buf) >= md_stripe_cache_size)
if (verbose)
fprintf(stderr, "warning: opening %s: %s\n",
real_path, strerror(errno));
- return rc;
+ /* No MAX_HW_SECTORS_KB_PATH isn't necessary an
+ * error for some device. */
+ rc = 0;
}
if (strlen(buf) - 1 > 0) {
snprintf(real_path, sizeof(real_path), "%s/%s", path,
MAX_SECTORS_KB_PATH);
rc = write_file(real_path, buf);
- if (rc && verbose)
- fprintf(stderr, "warning: writing to %s: %s\n",
- real_path, strerror(errno));
+ if (rc) {
+ if (verbose)
+ fprintf(stderr, "warning: writing to %s: %s\n",
+ real_path, strerror(errno));
+ /* No MAX_SECTORS_KB_PATH isn't necessary an
+ * error for some device. */
+ rc = 0;
+ }
}
+
+ if (fan_out) {
+ char *slave = NULL;
+ glob_info.gl_pathc = 0;
+ glob_info.gl_offs = 0;
+ /* if device is multipath device, tune its slave devices */
+ snprintf(real_path, sizeof(real_path), "%s/slaves/*", path);
+ rc = glob(real_path, GLOB_NOSORT, NULL, &glob_info);
+
+ for (i = 0; rc == 0 && i < glob_info.gl_pathc; i++){
+ slave = basename(glob_info.gl_pathv[i]);
+ snprintf(real_path, sizeof(real_path), "/dev/%s", slave);
+ rc = set_blockdev_tunables(real_path, 0);
+ }
+
+ if (rc == GLOB_NOMATCH) {
+ /* no slave device is not an error */
+ rc = 0;
+ } else if (rc && verbose) {
+ if (slave == NULL) {
+ fprintf(stderr, "warning: %s, failed to read"
+ " entries under %s/slaves\n",
+ strerror(errno), path);
+ } else {
+ fprintf(stderr, "unable to set tunables for"
+ " slave device %s (slave would be"
+ " unable to handle IO request from"
+ " master %s)\n",
+ real_path, source);
+ }
+ }
+ globfree(&glob_info);
+ }
+
return rc;
}
-int main(int argc, char *const argv[])
+static int parse_ldd(char *source, struct mount_opts *mop, char *options)
{
- char default_options[] = "";
- char *usource, *source, *ptr;
- char target[PATH_MAX] = {'\0'};
- char real_path[PATH_MAX] = {'\0'};
- char path[256], name[256];
- FILE *f;
- size_t sz;
- char *options, *optcopy, *orig_options = default_options;
- int i, nargs = 3, opt, rc, flags, optlen;
- static struct option long_opt[] = {
- {"fake", 0, 0, 'f'},
- {"force", 0, 0, 1},
- {"help", 0, 0, 'h'},
- {"nomtab", 0, 0, 'n'},
- {"options", 1, 0, 'o'},
- {"verbose", 0, 0, 'v'},
- {0, 0, 0, 0}
- };
-
- progname = strrchr(argv[0], '/');
- progname = progname ? progname + 1 : argv[0];
-
- while ((opt = getopt_long(argc, argv, "fhno:v",
- long_opt, NULL)) != EOF){
- switch (opt) {
- case 1:
- ++force;
- printf("force: %d\n", force);
- nargs++;
- break;
- case 'f':
- ++fake;
- printf("fake: %d\n", fake);
- nargs++;
- break;
- case 'h':
- usage(stdout);
- break;
- case 'n':
- ++nomtab;
- printf("nomtab: %d\n", nomtab);
- nargs++;
- break;
- case 'o':
- orig_options = optarg;
- nargs++;
- break;
- case 'v':
- ++verbose;
- nargs++;
- break;
- default:
- fprintf(stderr, "%s: unknown option '%c'\n",
- progname, opt);
- usage(stderr);
- break;
- }
- }
+ struct lustre_disk_data *ldd = &mop->mo_ldd;
+ int rc;
+
+ rc = osd_is_lustre(source, &ldd->ldd_mount_type);
+ if (rc == 0) {
+ fprintf(stderr, "%s: %s has not been formatted with mkfs.lustre"
+ " or the backend filesystem type is not supported by "
+ "this tool\n", progname, source);
+ return ENODEV;
+ }
+
+ return 0;
+}
- if (optind + 2 > argc) {
- fprintf(stderr, "%s: too few arguments\n", progname);
- usage(stderr);
- }
+static void set_defaults(struct mount_opts *mop)
+{
+ memset(mop, 0, sizeof(*mop));
+ mop->mo_usource = NULL;
+ mop->mo_source = NULL;
+ mop->mo_nomtab = 0;
+ mop->mo_fake = 0;
+ mop->mo_force = 0;
+ mop->mo_retry = 0;
+ mop->mo_have_mgsnid = 0;
+ mop->mo_md_stripe_cache_size = 16384;
+ mop->mo_orig_options = "";
+}
- usource = argv[optind];
- if (!usource) {
- usage(stderr);
- }
+static int parse_opts(int argc, char *const argv[], struct mount_opts *mop)
+{
+ static struct option long_opt[] = {
+ {"fake", 0, 0, 'f'},
+ {"force", 0, 0, 1},
+ {"help", 0, 0, 'h'},
+ {"nomtab", 0, 0, 'n'},
+ {"options", 1, 0, 'o'},
+ {"verbose", 0, 0, 'v'},
+ {0, 0, 0, 0}
+ };
+ char real_path[PATH_MAX] = {'\0'};
+ FILE *f;
+ char path[256], name[256];
+ size_t sz;
+ char *ptr;
+ int opt, rc;
+
+ while ((opt = getopt_long(argc, argv, "fhno:v",
+ long_opt, NULL)) != EOF){
+ switch (opt) {
+ case 1:
+ ++mop->mo_force;
+ printf("force: %d\n", mop->mo_force);
+ break;
+ case 'f':
+ ++mop->mo_fake;
+ printf("fake: %d\n", mop->mo_fake);
+ break;
+ case 'h':
+ usage(stdout);
+ break;
+ case 'n':
+ ++mop->mo_nomtab;
+ printf("nomtab: %d\n", mop->mo_nomtab);
+ break;
+ case 'o':
+ mop->mo_orig_options = optarg;
+ break;
+ case 'v':
+ ++verbose;
+ break;
+ default:
+ fprintf(stderr, "%s: unknown option '%c'\n",
+ progname, opt);
+ usage(stderr);
+ break;
+ }
+ }
+
+ if (optind + 2 > argc) {
+ fprintf(stderr, "%s: too few arguments\n", progname);
+ usage(stderr);
+ }
+
+ mop->mo_usource = argv[optind];
+ if (!mop->mo_usource) {
+ usage(stderr);
+ }
+
+ /**
+ * Try to get the real path to the device, in case it is a
+ * symbolic link for instance
+ */
+ if (realpath(mop->mo_usource, real_path) != NULL) {
+ mop->mo_usource = strdup(real_path);
+
+ ptr = strrchr(real_path, '/');
+ if (ptr && strncmp(ptr, "/dm-", 4) == 0 && isdigit(*(ptr + 4))) {
+ snprintf(path, sizeof(path), "/sys/block/%s/dm/name", ptr+1);
+ if ((f = fopen(path, "r"))) {
+ /* read "<name>\n" from sysfs */
+ if (fgets(name, sizeof(name), f) && (sz = strlen(name)) > 1) {
+ name[sz - 1] = '\0';
+ snprintf(real_path, sizeof(real_path), "/dev/mapper/%s", name);
+ }
+ fclose(f);
+ }
+ }
+ }
+
+ mop->mo_source = convert_hostnames(mop->mo_usource);
+ if (!mop->mo_source) {
+ usage(stderr);
+ }
+
+ if (realpath(argv[optind + 1], mop->mo_target) == NULL) {
+ rc = errno;
+ fprintf(stderr, "warning: %s: cannot resolve: %s\n",
+ argv[optind + 1], strerror(errno));
+ return rc;
+ }
+
+ return 0;
+}
- /**
- * Try to get the real path to the device, in case it is a
- * symbolic link for instance
- */
- if (realpath(usource, real_path) != NULL) {
- usource = real_path;
-
- ptr = strrchr(real_path, '/');
- if (ptr && strncmp(ptr, "/dm-", 4) == 0 && isdigit(*(ptr + 4))) {
- snprintf(path, sizeof(path), "/sys/block/%s/dm/name", ptr+1);
- if ((f = fopen(path, "r"))) {
- /* read "<name>\n" from sysfs */
- if (fgets(name, sizeof(name), f) && (sz = strlen(name)) > 1) {
- name[sz - 1] = '\0';
- snprintf(real_path, sizeof(real_path), "/dev/mapper/%s", name);
- }
- fclose(f);
- }
- }
- }
+int main(int argc, char *const argv[])
+{
+ struct mount_opts mop;
+ char *options;
+ int i, rc, flags;
- source = convert_hostnames(usource);
- if (!source) {
- usage(stderr);
- }
+ progname = strrchr(argv[0], '/');
+ progname = progname ? progname + 1 : argv[0];
- if (realpath(argv[optind + 1], target) == NULL) {
- rc = errno;
- fprintf(stderr, "warning: %s: cannot resolve: %s\n",
- argv[optind + 1], strerror(errno));
- return rc;
- }
+ set_defaults(&mop);
+
+ rc = osd_init();
+ if (rc)
+ return rc;
+
+ rc = parse_opts(argc, argv, &mop);
+ if (rc)
+ return rc;
if (verbose) {
for (i = 0; i < argc; i++)
printf("arg[%d] = %s\n", i, argv[i]);
- printf("source = %s (%s), target = %s\n", usource, source,
- target);
- printf("options = %s\n", orig_options);
+ printf("source = %s (%s), target = %s\n", mop.mo_usource,
+ mop.mo_source, mop.mo_target);
+ printf("options = %s\n", mop.mo_orig_options);
}
- options = malloc(strlen(orig_options) + 1);
+ options = malloc(MAXOPT);
if (options == NULL) {
fprintf(stderr, "can't allocate memory for options\n");
return -1;
}
- strcpy(options, orig_options);
- rc = parse_options(options, &flags);
+ strcpy(options, mop.mo_orig_options);
+ rc = parse_options(&mop, options, &flags);
if (rc) {
fprintf(stderr, "%s: can't parse options: %s\n",
progname, options);
return(EINVAL);
}
- if (!force) {
- rc = check_mtab_entry(usource, source, target, "lustre");
+ if (!mop.mo_force) {
+ rc = check_mtab_entry(mop.mo_usource, mop.mo_source,
+ mop.mo_target, "lustre");
if (rc && !(flags & MS_REMOUNT)) {
fprintf(stderr, "%s: according to %s %s is "
- "already mounted on %s\n",
- progname, MOUNTED, usource, target);
+ "already mounted on %s\n", progname, MOUNTED,
+ mop.mo_usource, mop.mo_target);
return(EEXIST);
}
if (!rc && (flags & MS_REMOUNT)) {
fprintf(stderr, "%s: according to %s %s is "
- "not already mounted on %s\n",
- progname, MOUNTED, usource, target);
+ "not already mounted on %s\n", progname, MOUNTED,
+ mop.mo_usource, mop.mo_target);
return(ENOENT);
}
}
if (flags & MS_REMOUNT)
- nomtab++;
+ mop.mo_nomtab++;
- rc = access(target, F_OK);
+ rc = access(mop.mo_target, F_OK);
if (rc) {
rc = errno;
- fprintf(stderr, "%s: %s inaccessible: %s\n", progname, target,
- strerror(errno));
+ fprintf(stderr, "%s: %s inaccessible: %s\n", progname,
+ mop.mo_target, strerror(errno));
return rc;
}
+ if (!strstr(mop.mo_usource, ":/")) {
+ rc = parse_ldd(mop.mo_source, &mop, options);
+ if (rc)
+ return rc;
+ }
+
/* In Linux 2.4, the target device doesn't get passed to any of our
functions. So we'll stick it on the end of the options. */
- optlen = strlen(options) + strlen(",device=") + strlen(source) + 1;
- optcopy = malloc(optlen);
- if (optcopy == NULL) {
- fprintf(stderr, "can't allocate memory to optcopy\n");
- return -1;
- }
- strcpy(optcopy, options);
- if (*optcopy)
- strcat(optcopy, ",");
- strcat(optcopy, "device=");
- strcat(optcopy, source);
+ append_option(options, "device=");
+ strcat(options, mop.mo_source);
if (verbose)
printf("mounting device %s at %s, flags=%#x options=%s\n",
- source, target, flags, optcopy);
+ mop.mo_source, mop.mo_target, flags, options);
- if (!strstr(usource, ":/") && set_blockdev_tunables(source)) {
+ if (!strstr(mop.mo_usource, ":/") && set_blockdev_tunables(mop.mo_source, 1)) {
if (verbose)
fprintf(stderr, "%s: unable to set tunables for %s"
" (may cause reduced IO performance)\n",
- argv[0], source);
+ argv[0], mop.mo_source);
}
- register_service_tags(usource, source, target);
-
- if (!fake) {
+ if (!mop.mo_fake) {
/* flags and target get to lustre_get_sb, but not
lustre_fill_super. Lustre ignores the flags, but mount
does not. */
- for (i = 0, rc = -EAGAIN; i <= retry && rc != 0; i++) {
- rc = mount(source, target, "lustre", flags,
- (void *)optcopy);
+ for (i = 0, rc = -EAGAIN; i <= mop.mo_retry && rc != 0; i++) {
+ rc = mount(mop.mo_source, mop.mo_target, "lustre",
+ flags, (void *)options);
if (rc) {
if (verbose) {
fprintf(stderr, "%s: mount %s at %s "
"failed: %s retries left: "
"%d\n", basename(progname),
- usource, target,
- strerror(errno), retry-i);
+ mop.mo_usource, mop.mo_target,
+ strerror(errno),
+ mop.mo_retry - i);
}
- if (retry) {
+ if (mop.mo_retry) {
sleep(1 << max((i/2), 5));
}
else {
rc = errno;
- cli = strrchr(usource, ':');
+ cli = strrchr(mop.mo_usource, ':');
if (cli && (strlen(cli) > 2))
cli += 2;
else
cli = NULL;
fprintf(stderr, "%s: mount %s at %s failed: %s\n", progname,
- usource, target, strerror(errno));
+ mop.mo_usource, mop.mo_target, strerror(errno));
if (errno == ENODEV)
fprintf(stderr, "Are the lustre modules loaded?\n"
- "Check /etc/modprobe.conf and /proc/filesystems"
- "\nNote 'alias lustre llite' should be removed"
- " from modprobe.conf\n");
+ "Check /etc/modprobe.conf and "
+ "/proc/filesystems\n");
if (errno == ENOTBLK)
fprintf(stderr, "Do you need -o loop?\n");
if (errno == ENOMEDIUM)
}
if (errno == EALREADY)
fprintf(stderr, "The target service is already running."
- " (%s)\n", usource);
+ " (%s)\n", mop.mo_usource);
if (errno == ENXIO)
fprintf(stderr, "The target service failed to start "
"(bad config log?) (%s). "
- "See /var/log/messages.\n", usource);
+ "See /var/log/messages.\n", mop.mo_usource);
if (errno == EIO)
fprintf(stderr, "Is the MGS running?\n");
if (errno == EADDRINUSE)
fprintf(stderr, "The target service's index is already "
- "in use. (%s)\n", usource);
+ "in use. (%s)\n", mop.mo_usource);
if (errno == EINVAL) {
fprintf(stderr, "This may have multiple causes.\n");
if (cli)
}
/* May as well try to clean up loop devs */
- if (strncmp(usource, "/dev/loop", 9) == 0) {
+ if (strncmp(mop.mo_usource, "/dev/loop", 9) == 0) {
char cmd[256];
int ret;
- sprintf(cmd, "/sbin/losetup -d %s", usource);
+ sprintf(cmd, "/sbin/losetup -d %s", mop.mo_usource);
if ((ret = system(cmd)) < 0)
rc = errno;
else if (ret > 0)
rc = WEXITSTATUS(ret);
}
- } else if (!nomtab) {
- rc = update_mtab_entry(usource, target, "lustre", orig_options,
- 0,0,0);
+ } else if (!mop.mo_nomtab) {
+ rc = update_mtab_entry(mop.mo_usource, mop.mo_target, "lustre",
+ mop.mo_orig_options, 0,0,0);
}
- free(optcopy);
- free(source);
+ free(options);
+ /* mo_usource should be freed, but we can rely on the kernel */
+ free(mop.mo_source);
+
+ osd_fini();
+
return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff