#define PATH_MAX 4096
#endif
-#define MAX_LOOP_DEVICES 16
-#define L_BLOCK_SIZE 4096
-#define INDEX_UNASSIGNED 0xFFFF
-#define MO_IS_LOOP 0x01
-#define MO_FORCEFORMAT 0x02
-
-/* used to describe the options to format the lustre disk, not persistent */
-struct mkfs_opts {
- struct lustre_disk_data mo_ldd; /* to be written in MOUNT_DATA_FILE */
- char mo_device[128]; /* disk device name */
- char mo_loopdev[128]; /* in case a loop dev is needed */
- char mo_mkfsopts[512]; /* options to the backing-store mkfs */
- __u64 mo_device_sz; /* in KB */
- int mo_stripe_count;
- int mo_flags;
- int mo_mgs_failnodes;
-};
-
char *progname;
int verbose = 1;
static int print_only = 0;
-static int failover = 0;
static int upgrade_to_18 = 0;
void usage(FILE *out)
return;
}
-#define vprint if (verbose > 0) printf
-#define verrprint if (verbose >= 0) printf
-
/*================ utility functions =====================*/
char *strscat(char *dst, char *src, int buflen) {
return ret;
}
-/* return canonicalized absolute pathname, even if the target file does not
- * exist, unlike realpath */
-static char *absolute_path(char *devname)
-{
- char buf[PATH_MAX + 1];
- char *path;
- char *ptr;
-
- path = malloc(PATH_MAX + 1);
- if (path == NULL)
- return NULL;
-
- if (devname[0] != '/') {
- if (getcwd(buf, sizeof(buf) - 1) == NULL)
- return NULL;
- strcat(buf, "/");
- strcat(buf, devname);
- } else {
- strcpy(buf, devname);
- }
- /* truncate filename before calling realpath */
- ptr = strrchr(buf, '/');
- if (ptr == NULL) {
- free(path);
- return NULL;
- }
- *ptr = '\0';
- if (path != realpath(buf, path)) {
- free(path);
- return NULL;
- }
- /* add the filename back */
- strcat(path, "/");
- strcat(path, ptr + 1);
- return path;
-}
-
-/* Determine if a device is a block device (as opposed to a file) */
-int is_block(char* devname)
-{
- struct stat st;
- int ret = 0;
- char *devpath;
-
- devpath = absolute_path(devname);
- if (devpath == NULL) {
- fprintf(stderr, "%s: failed to resolve path to %s\n",
- progname, devname);
- return -1;
- }
-
- ret = access(devname, F_OK);
- if (ret != 0) {
- if (strncmp(devpath, "/dev/", 5) == 0) {
- /* nobody sane wants to create a loopback file under
- * /dev. Let's just report the device doesn't exist */
- fprintf(stderr, "%s: %s apparently does not exist\n",
- progname, devpath);
- ret = -1;
- goto out;
- }
- ret = 0;
- goto out;
- }
- ret = stat(devpath, &st);
- if (ret != 0) {
- fprintf(stderr, "%s: cannot stat %s\n", progname, devpath);
- goto out;
- }
- ret = S_ISBLK(st.st_mode);
-out:
- free(devpath);
- return ret;
-}
-
__u64 get_device_size(char* device)
{
int ret, fd;
return 0;
}
-/* Display the need for the latest e2fsprogs to be installed. make_backfs
- * indicates if the caller is make_lustre_backfs() or not. */
-static void disp_old_e2fsprogs_msg(const char *feature, int make_backfs)
-{
- static int msg_displayed;
-
- if (msg_displayed) {
- fprintf(stderr, "WARNING: %s does not support %s "
- "feature.\n\n", E2FSPROGS, feature);
- return;
- }
-
- msg_displayed++;
-
- fprintf(stderr, "WARNING: The %s package currently installed on "
- "your system does not support \"%s\" feature.\n",
- E2FSPROGS, feature);
-#if !(HAVE_LDISKFSPROGS)
- fprintf(stderr, "Please install the latest version of e2fsprogs from\n"
- "http://downloads.whamcloud.com/public/e2fsprogs/latest/\n"
- "to enable this feature.\n");
-#endif
- if (make_backfs)
- fprintf(stderr, "Feature will not be enabled until %s"
- "is updated and '%s -O %s %%{device}' "
- "is run.\n\n", E2FSPROGS, TUNE2FS, feature);
-}
-
-/* Check whether the file exists in the device */
-static int file_in_dev(char *file_name, char *dev_name)
-{
- FILE *fp;
- char debugfs_cmd[256];
- unsigned int inode_num;
- int i;
-
- /* Construct debugfs command line. */
- snprintf(debugfs_cmd, sizeof(debugfs_cmd),
- "%s -c -R 'stat %s' '%s' 2>&1 | egrep '(Inode|unsupported)'",
- DEBUGFS, file_name, dev_name);
-
- fp = popen(debugfs_cmd, "r");
- if (!fp) {
- fprintf(stderr, "%s: %s\n", progname, strerror(errno));
- return 0;
- }
-
- if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
- pclose(fp);
- return 1;
- }
- i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd), fp);
- if (i) {
- debugfs_cmd[i] = 0;
- fprintf(stderr, "%s", debugfs_cmd);
- if (strstr(debugfs_cmd, "unsupported feature")) {
- disp_old_e2fsprogs_msg("an unknown", 0);
- }
- pclose(fp);
- return -1;
- }
- pclose(fp);
- return 0;
-}
-
-/* Check whether the device has already been used with lustre */
-static int is_lustre_target(struct mkfs_opts *mop)
-{
- int rc;
-
- vprint("checking for existing Lustre data: ");
-
- if ((rc = file_in_dev(MOUNT_DATA_FILE, mop->mo_device))) {
- vprint("found %s\n",
- (rc == 1) ? MOUNT_DATA_FILE : "extents");
- /* in the -1 case, 'extents' means this really IS a lustre
- target */
- return rc;
- }
-
- if ((rc = file_in_dev(LAST_RCVD, mop->mo_device))) {
- vprint("found %s\n", LAST_RCVD);
- return rc;
- }
-
- vprint("not found\n");
- return 0; /* The device is not a lustre target. */
-}
-
-/* Check if a certain feature is supported by e2fsprogs.
- * Firstly we try to use "debugfs supported_features" command to check if
- * the feature is supported. If this fails we try to set this feature with
- * mke2fs to check for its support. */
-static int is_e2fsprogs_feature_supp(const char *feature)
-{
- static char supp_features[4096] = "";
- FILE *fp;
- char cmd[PATH_MAX];
- char imgname[] = "/tmp/test-img-XXXXXX";
- int fd = -1;
- int ret = 1;
-
- if (supp_features[0] == '\0') {
- snprintf(cmd, sizeof(cmd), "%s -c -R supported_features 2>&1",
- DEBUGFS);
-
- /* Using popen() instead of run_command() since debugfs does
- * not return proper error code if command is not supported */
- fp = popen(cmd, "r");
- if (!fp) {
- fprintf(stderr, "%s: %s\n", progname, strerror(errno));
- return 0;
- }
- ret = fread(supp_features, 1, sizeof(supp_features), fp);
- fclose(fp);
- }
- if (ret > 0 && strstr(supp_features,
- strncmp(feature, "-O ", 3) ? feature : feature+3))
- return 0;
-
- if ((fd = mkstemp(imgname)) < 0)
- return -1;
- else
- close(fd);
-
- snprintf(cmd, sizeof(cmd), "%s -F %s %s 100 >/dev/null 2>&1",
- MKE2FS, feature, imgname);
- /* run_command() displays the output of mke2fs when it fails for
- * some feature, so use system() directly */
- ret = system(cmd);
- unlink(imgname);
-
- return ret;
-}
-
-/**
- * append_unique: append @key or @key=@val pair to @buf only if @key does not
- * exists
- * @buf: buffer to hold @key or @key=@val
- * @prefix: prefix string before @key
- * @key: key string
- * @val: value string if it's a @key=@val pair
- */
-static void append_unique(char *buf, char *prefix, char *key, char *val,
- size_t maxbuflen)
-{
- char *anchor, *end;
- int len;
-
- if (key == NULL)
- return;
-
- anchor = end = strstr(buf, key);
- /* try to find exact match string in @buf */
- while (end && *end != '\0' && *end != ',' && *end != ' ' && *end != '=')
- ++end;
- len = end - anchor;
- if (anchor == NULL || strlen(key) != len ||
- strncmp(anchor, key, len) != 0) {
- if (prefix != NULL)
- strscat(buf, prefix, maxbuflen);
-
- strscat(buf, key, maxbuflen);
- if (val != NULL) {
- strscat(buf, "=", maxbuflen);
- strscat(buf, val, maxbuflen);
- }
- }
-}
-
-static void enable_default_ext4_features(struct mkfs_opts *mop, char *anchor,
- size_t maxbuflen, int user_spec)
-{
- if (IS_OST(&mop->mo_ldd)) {
- append_unique(anchor, user_spec ? "," : " -O ",
- "extents", NULL, sizeof(mop->mo_mkfsopts));
- append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
- } else if (IS_MDT(&mop->mo_ldd)) {
- append_unique(anchor, user_spec ? "," : " -O ",
- "dirdata", NULL, maxbuflen);
- append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
- append_unique(anchor, ",", "^extents", NULL, maxbuflen);
- } else {
- append_unique(anchor, user_spec ? "," : " -O ",
- "uninit_bg", NULL, maxbuflen);
- }
-
- /* Multiple mount protection enabled only if failover node specified */
- if (failover) {
- if (is_e2fsprogs_feature_supp("-O mmp") == 0)
- append_unique(anchor, ",", "mmp", NULL, maxbuflen);
- else
- disp_old_e2fsprogs_msg("mmp", 1);
- }
-
- /* Allow more than 65000 subdirectories */
- if (is_e2fsprogs_feature_supp("-O dir_nlink") == 0)
- append_unique(anchor, ",", "dir_nlink", NULL, maxbuflen);
-
- /* The following options are only valid for ext4-based ldiskfs.
- * If --backfstype=ext3 is specified, do not enable them. */
- if (mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3)
- return;
-
- /* Allow files larger than 2TB. Also needs LU-16, but not harmful. */
- if (is_e2fsprogs_feature_supp("-O huge_file") == 0)
- append_unique(anchor, ",", "huge_file", NULL, maxbuflen);
-
- /* Enable large block addresses if the LUN is over 2^32 blocks. */
- if (mop->mo_device_sz / (L_BLOCK_SIZE >> 10) >= 0x100002000ULL &&
- is_e2fsprogs_feature_supp("-O 64bit") == 0)
- append_unique(anchor, ",", "64bit", NULL, maxbuflen);
-
- /* Cluster inode/block bitmaps and inode table for more efficient IO.
- * Align the flex groups on a 1MB boundary for better performance. */
- /* This -O feature needs to go last, since it adds the "-G" option. */
- if (is_e2fsprogs_feature_supp("-O flex_bg") == 0) {
- char tmp_buf[64];
-
- append_unique(anchor, ",", "flex_bg", NULL, maxbuflen);
-
- if (IS_OST(&mop->mo_ldd)) {
- snprintf(tmp_buf, sizeof(tmp_buf), " -G %u",
- (1 << 20) / L_BLOCK_SIZE);
- strscat(anchor, tmp_buf, maxbuflen);
- }
- }
- /* Don't add any more "-O" options here, see last comment above */
-}
-
-/**
- * moveopts_to_end: find the option string, move remaining strings to
- * where option string starts, and append the option
- * string at the end
- * @start: where the option string starts before the move
- * RETURN: where the option string starts after the move
- */
-static char *moveopts_to_end(char *start)
-{
- char save[512];
- char *end, *idx;
-
- /* skip whitespace before options */
- end = start + 2;
- while (*end == ' ')
- ++end;
-
- /* find end of option characters */
- while (*end != ' ' && *end != '\0')
- ++end;
-
- /* save options */
- strncpy(save, start, end - start);
- save[end - start] = '\0';
-
- /* move remaining options up front */
- if (*end)
- memmove(start, end, strlen(end));
- *(start + strlen(end)) = '\0';
-
- /* append the specified options */
- if (*(start + strlen(start) - 1) != ' ')
- strcat(start, " ");
- idx = start + strlen(start);
- strcat(start, save);
-
- return idx;
-}
-
-/* Build fs according to type */
-int make_lustre_backfs(struct mkfs_opts *mop)
-{
- __u64 device_sz = mop->mo_device_sz, block_count = 0;
- char mkfs_cmd[PATH_MAX];
- char buf[64];
- char *start;
- char *dev;
- int ret = 0, ext_opts = 0;
- size_t maxbuflen;
-
- if (!(mop->mo_flags & MO_IS_LOOP)) {
- mop->mo_device_sz = get_device_size(mop->mo_device);
-
- if (mop->mo_device_sz == 0)
- return ENODEV;
-
- /* Compare to real size */
- if (device_sz == 0 || device_sz > mop->mo_device_sz)
- device_sz = mop->mo_device_sz;
- else
- mop->mo_device_sz = device_sz;
- }
-
- if (mop->mo_device_sz != 0) {
- if (mop->mo_device_sz < 8096){
- fprintf(stderr, "%s: size of filesystem must be larger "
- "than 8MB, but is set to %lldKB\n",
- progname, (long long)mop->mo_device_sz);
- return EINVAL;
- }
- block_count = mop->mo_device_sz / (L_BLOCK_SIZE >> 10);
- /* If the LUN size is just over 2^32 blocks, limit the
- * filesystem size to 2^32-1 blocks to avoid problems with
- * ldiskfs/mkfs not handling this size. Bug 22906 */
- if (block_count > 0xffffffffULL && block_count < 0x100002000ULL)
- block_count = 0xffffffffULL;
- }
-
- if ((mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3) ||
- (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS) ||
- (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS2)) {
- long inode_size = 0;
-
- /* Journal size in MB */
- if (strstr(mop->mo_mkfsopts, "-J") == NULL) {
- /* Choose our own default journal size */
- long journal_sz = 0, max_sz;
- if (device_sz > 1024 * 1024) /* 1GB */
- journal_sz = (device_sz / 102400) * 4;
- /* cap journal size at 1GB */
- if (journal_sz > 1024L)
- journal_sz = 1024L;
- /* man mkfs.ext3 */
- max_sz = (102400 * L_BLOCK_SIZE) >> 20; /* 400MB */
- if (journal_sz > max_sz)
- journal_sz = max_sz;
- if (journal_sz) {
- sprintf(buf, " -J size=%ld", journal_sz);
- strscat(mop->mo_mkfsopts, buf,
- sizeof(mop->mo_mkfsopts));
- }
- }
-
- /* Inode size (for extended attributes). The LOV EA size is
- * 32 (EA hdr) + 32 (lov_mds_md) + stripes * 24 (lov_ost_data),
- * and we want some margin above that for ACLs, other EAs... */
- if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
- if (IS_MDT(&mop->mo_ldd)) {
- if (mop->mo_stripe_count > 72)
- inode_size = 512; /* bz 7241 */
- /* see also "-i" below for EA blocks */
- else if (mop->mo_stripe_count > 32)
- inode_size = 2048;
- else if (mop->mo_stripe_count > 10)
- inode_size = 1024;
- else
- inode_size = 512;
- } else if (IS_OST(&mop->mo_ldd)) {
- /* We store MDS FID and OST objid in EA on OST
- * we need to make inode bigger as well. */
- inode_size = 256;
- }
-
- if (inode_size > 0) {
- sprintf(buf, " -I %ld", inode_size);
- strscat(mop->mo_mkfsopts, buf,
- sizeof(mop->mo_mkfsopts));
- }
- }
-
- /* Bytes_per_inode: disk size / num inodes */
- if (strstr(mop->mo_mkfsopts, "-i") == NULL &&
- strstr(mop->mo_mkfsopts, "-N") == NULL) {
- long bytes_per_inode = 0;
-
- /* Allocate more inodes on MDT devices. There is
- * no data stored on the MDT, and very little extra
- * metadata beyond the inode. It could go down as
- * low as 1024 bytes, but this is conservative.
- * Account for external EA blocks for wide striping. */
- if (IS_MDT(&mop->mo_ldd)) {
- bytes_per_inode = inode_size + 1536;
-
- if (mop->mo_stripe_count > 72) {
- int extra = mop->mo_stripe_count * 24;
- extra = ((extra - 1) | 4095) + 1;
- bytes_per_inode += extra;
- }
- }
-
- /* Allocate fewer inodes on large OST devices. Most
- * filesystems can be much more aggressive than even
- * this, but it is impossible to know in advance. */
- if (IS_OST(&mop->mo_ldd)) {
- /* OST > 16TB assume average file size 1MB */
- if (device_sz > (16ULL << 30))
- bytes_per_inode = 1024 * 1024;
- /* OST > 4TB assume average file size 512kB */
- else if (device_sz > (4ULL << 30))
- bytes_per_inode = 512 * 1024;
- /* OST > 1TB assume average file size 256kB */
- else if (device_sz > (1ULL << 30))
- bytes_per_inode = 256 * 1024;
- /* OST > 10GB assume average file size 64kB,
- * plus a bit so that inodes will fit into a
- * 256x flex_bg without overflowing */
- else if (device_sz > (10ULL << 20))
- bytes_per_inode = 69905;
- }
-
- if (bytes_per_inode > 0) {
- sprintf(buf, " -i %ld", bytes_per_inode);
- strscat(mop->mo_mkfsopts, buf,
- sizeof(mop->mo_mkfsopts));
- }
- }
-
- if (verbose < 2) {
- strscat(mop->mo_mkfsopts, " -q",
- sizeof(mop->mo_mkfsopts));
- }
-
- /* start handle -O mkfs options */
- if ((start = strstr(mop->mo_mkfsopts, "-O")) != NULL) {
- if (strstr(start + 2, "-O") != NULL) {
- fprintf(stderr,
- "%s: don't specify multiple -O options\n",
- progname);
- return EINVAL;
- }
- start = moveopts_to_end(start);
- maxbuflen = sizeof(mop->mo_mkfsopts) -
- (start - mop->mo_mkfsopts) - strlen(start);
- enable_default_ext4_features(mop, start, maxbuflen, 1);
- } else {
- start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts),
- maxbuflen = sizeof(mop->mo_mkfsopts) -
- strlen(mop->mo_mkfsopts);
- enable_default_ext4_features(mop, start, maxbuflen, 0);
- }
- /* end handle -O mkfs options */
-
- /* start handle -E mkfs options */
- if ((start = strstr(mop->mo_mkfsopts, "-E")) != NULL) {
- if (strstr(start + 2, "-E") != NULL) {
- fprintf(stderr,
- "%s: don't specify multiple -E options\n",
- progname);
- return EINVAL;
- }
- start = moveopts_to_end(start);
- maxbuflen = sizeof(mop->mo_mkfsopts) -
- (start - mop->mo_mkfsopts) - strlen(start);
- ext_opts = 1;
- } else {
- start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts);
- maxbuflen = sizeof(mop->mo_mkfsopts) -
- strlen(mop->mo_mkfsopts);
- }
-
- /* In order to align the filesystem metadata on 1MB boundaries,
- * give a resize value that will reserve a power-of-two group
- * descriptor blocks, but leave one block for the superblock.
- * Only useful for filesystems with < 2^32 blocks due to resize
- * limitations. */
- if (IS_OST(&mop->mo_ldd) && mop->mo_device_sz > 100 * 1024 &&
- mop->mo_device_sz * 1024 / L_BLOCK_SIZE <= 0xffffffffULL) {
- unsigned group_blocks = L_BLOCK_SIZE * 8;
- unsigned desc_per_block = L_BLOCK_SIZE / 32;
- unsigned resize_blks;
-
- resize_blks = (1ULL<<32) - desc_per_block*group_blocks;
- snprintf(buf, sizeof(buf), "%u", resize_blks);
- append_unique(start, ext_opts ? "," : " -E ",
- "resize", buf, maxbuflen);
- ext_opts = 1;
- }
-
- /* Avoid zeroing out the full journal - speeds up mkfs */
- if (is_e2fsprogs_feature_supp("-E lazy_journal_init") == 0)
- append_unique(start, ext_opts ? "," : " -E ",
- "lazy_journal_init", NULL, maxbuflen);
- /* end handle -E mkfs options */
-
- /* Allow reformat of full devices (as opposed to
- partitions.) We already checked for mounted dev. */
- strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
-
- snprintf(mkfs_cmd, sizeof(mkfs_cmd),
- "%s -j -b %d -L %s ", MKE2FS, L_BLOCK_SIZE,
- mop->mo_ldd.ldd_svname);
- } else {
- fprintf(stderr,"%s: unsupported fs type: %d (%s)\n",
- progname, mop->mo_ldd.ldd_mount_type,
- MT_STR(&mop->mo_ldd));
- return EINVAL;
- }
-
- /* For loop device format the dev, not the filename */
- dev = mop->mo_device;
- if (mop->mo_flags & MO_IS_LOOP)
- dev = mop->mo_loopdev;
-
- vprint("formatting backing filesystem %s on %s\n",
- MT_STR(&mop->mo_ldd), dev);
- vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
- vprint("\t4k blocks "LPU64"\n", block_count);
- vprint("\toptions %s\n", mop->mo_mkfsopts);
-
- /* mkfs_cmd's trailing space is important! */
- strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
- strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
- strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
- if (block_count != 0) {
- sprintf(buf, " "LPU64, block_count);
- strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
- }
-
- vprint("mkfs_cmd = %s\n", mkfs_cmd);
- ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
- if (ret) {
- fatal();
- fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
- }
- return ret;
-}
-
/* ==================== Lustre config functions =============*/
void print_ldd(char *str, struct lustre_disk_data *ldd)
printf("\n");
}
-static int touch_file(char *filename)
-{
- int fd;
-
- if (filename == NULL) {
- return 1;
- }
-
- fd = open(filename, O_CREAT | O_TRUNC, 0600);
- if (fd < 0) {
- return 1;
- } else {
- close(fd);
- return 0;
- }
-}
-
-/* keep it less than LL_FID_NAMELEN */
-#define DUMMY_FILE_NAME_LEN 25
-#define EXT3_DIRENT_SIZE DUMMY_FILE_NAME_LEN
-
-/* Need to add these many entries to this directory to make HTREE dir. */
-#define MIN_ENTRIES_REQ_FOR_HTREE ((L_BLOCK_SIZE / EXT3_DIRENT_SIZE))
-
-static int add_dummy_files(char *dir)
-{
- char fpname[PATH_MAX];
- int i;
- int rc;
-
- for (i = 0; i < MIN_ENTRIES_REQ_FOR_HTREE; i++) {
- snprintf(fpname, PATH_MAX, "%s/%0*d", dir,
- DUMMY_FILE_NAME_LEN, i);
-
- rc = touch_file(fpname);
- if (rc && rc != -EEXIST) {
- fprintf(stderr,
- "%s: Can't create dummy file %s: %s\n",
- progname, fpname , strerror(errno));
- return rc;
- }
- }
- return 0;
-}
-
-static int __l_mkdir(char * filepnm, int mode , struct mkfs_opts *mop)
-{
- int ret;
-
- ret = mkdir(filepnm, mode);
- if (ret && ret != -EEXIST)
- return ret;
-
- /* IAM mode supports ext3 directories of HTREE type only. So add dummy
- * entries to new directory to create htree type of container for
- * this directory. */
- if (mop->mo_ldd.ldd_flags & LDD_F_IAM_DIR)
- return add_dummy_files(filepnm);
- return 0;
-}
-
-/* Write the server config files */
-int write_local_files(struct mkfs_opts *mop)
-{
- char mntpt[] = "/tmp/mntXXXXXX";
- char filepnm[128];
- char *dev;
- FILE *filep;
- int ret = 0;
- size_t num;
-
- /* Mount this device temporarily in order to write these files */
- if (!mkdtemp(mntpt)) {
- fprintf(stderr, "%s: Can't create temp mount point %s: %s\n",
- progname, mntpt, strerror(errno));
- return errno;
- }
-
- dev = mop->mo_device;
- if (mop->mo_flags & MO_IS_LOOP)
- dev = mop->mo_loopdev;
-
- ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0,
- mop->mo_ldd.ldd_mount_opts);
- if (ret) {
- fprintf(stderr, "%s: Unable to mount %s: %s\n",
- progname, dev, strerror(errno));
- ret = errno;
- if (errno == ENODEV) {
- fprintf(stderr, "Is the %s module available?\n",
- MT_STR(&mop->mo_ldd));
- }
- goto out_rmdir;
- }
-
- /* Set up initial directories */
- sprintf(filepnm, "%s/%s", mntpt, MOUNT_CONFIGS_DIR);
- ret = __l_mkdir(filepnm, 0777, mop);
- if ((ret != 0) && (errno != EEXIST)) {
- fprintf(stderr, "%s: Can't make configs dir %s (%s)\n",
- progname, filepnm, strerror(errno));
- goto out_umnt;
- } else if (errno == EEXIST) {
- ret = 0;
- }
-
- /* Save the persistent mount data into a file. Lustre must pre-read
- this file to get the real mount options. */
- vprint("Writing %s\n", MOUNT_DATA_FILE);
- sprintf(filepnm, "%s/%s", mntpt, MOUNT_DATA_FILE);
- filep = fopen(filepnm, "w");
- if (!filep) {
- fprintf(stderr, "%s: Unable to create %s file: %s\n",
- progname, filepnm, strerror(errno));
- goto out_umnt;
- }
- num = fwrite(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
- if (num < 1 && ferror(filep)) {
- fprintf(stderr, "%s: Unable to write to file (%s): %s\n",
- progname, filepnm, strerror(errno));
- goto out_umnt;
- }
- fclose(filep);
- /* COMPAT_146 */
-#ifdef TUNEFS
- /* Check for upgrade */
- if ((mop->mo_ldd.ldd_flags & (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS))
- == (LDD_F_UPGRADE14 | LDD_F_SV_TYPE_MGS)) {
- char cmd[128];
- char *term;
- int cmdsz = sizeof(cmd);
- vprint("Copying old logs\n");
-
- /* Copy the old client log to fsname-client */
- sprintf(filepnm, "%s/%s/%s-client",
- mntpt, MOUNT_CONFIGS_DIR, mop->mo_ldd.ldd_fsname);
- snprintf(cmd, cmdsz, "cp %s/%s/client %s", mntpt, MDT_LOGS_DIR,
- filepnm);
- ret = run_command(cmd, cmdsz);
- if (ret) {
- fprintf(stderr, "%s: Can't copy 1.4 config %s/client "
- "(%d)\n", progname, MDT_LOGS_DIR, ret);
- fprintf(stderr, "mount -t ldiskfs %s somewhere, "
- "find the client log for fs %s and "
- "copy it manually into %s/%s-client, "
- "then umount.\n",
- mop->mo_device,
- mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
- mop->mo_ldd.ldd_fsname);
- goto out_umnt;
- }
-
- /* We need to use the old mdt log because otherwise mdt won't
- have complete lov if old clients connect before all
- servers upgrade. */
- /* Copy the old mdt log to fsname-MDT0000 (get old
- name from mdt_UUID) */
- ret = 1;
- strscpy(filepnm, (char *)mop->mo_ldd.ldd_uuid, sizeof(filepnm));
- term = strstr(filepnm, "_UUID");
- if (term) {
- *term = '\0';
- snprintf(cmd, cmdsz, "cp %s/%s/%s %s/%s/%s",
- mntpt, MDT_LOGS_DIR, filepnm,
- mntpt, MOUNT_CONFIGS_DIR,
- mop->mo_ldd.ldd_svname);
- ret = run_command(cmd, cmdsz);
- }
- if (ret) {
- fprintf(stderr, "%s: Can't copy 1.4 config %s/%s "
- "(%d)\n", progname, MDT_LOGS_DIR, filepnm, ret);
- fprintf(stderr, "mount -t ext3 %s somewhere, "
- "find the MDT log for fs %s and "
- "copy it manually into %s/%s, "
- "then umount.\n",
- mop->mo_device,
- mop->mo_ldd.ldd_fsname, MOUNT_CONFIGS_DIR,
- mop->mo_ldd.ldd_svname);
- goto out_umnt;
- }
- }
-#endif
- /* end COMPAT_146 */
-
-out_umnt:
- umount(mntpt);
-out_rmdir:
- rmdir(mntpt);
- return ret;
-}
-
-int read_local_files(struct mkfs_opts *mop)
-{
- char tmpdir[] = "/tmp/dirXXXXXX";
- char cmd[PATH_MAX];
- char filepnm[128];
- char *dev;
- FILE *filep;
- int ret = 0;
- int cmdsz = sizeof(cmd);
-
- /* Make a temporary directory to hold Lustre data files. */
- if (!mkdtemp(tmpdir)) {
- fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
- progname, tmpdir, strerror(errno));
- return errno;
- }
-
- dev = mop->mo_device;
-
- /* TODO: it's worth observing the get_mountdata() function that is
- in mount_utils.c for getting the mountdata out of the
- filesystem */
-
- /* Construct debugfs command line. */
- snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s/mountdata' '%s'",
- DEBUGFS, MOUNT_DATA_FILE, tmpdir, dev);
-
- ret = run_command(cmd, cmdsz);
- if (ret)
- verrprint("%s: Unable to dump %s dir (%d)\n",
- progname, MOUNT_CONFIGS_DIR, ret);
-
- sprintf(filepnm, "%s/mountdata", tmpdir);
- filep = fopen(filepnm, "r");
- if (filep) {
- size_t num_read;
- vprint("Reading %s\n", MOUNT_DATA_FILE);
- num_read = fread(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
- if (num_read < 1 && ferror(filep)) {
- fprintf(stderr, "%s: Unable to read from file %s: %s\n",
- progname, filepnm, strerror(errno));
- goto out_close;
- }
- } else {
- /* COMPAT_146 */
- /* Try to read pre-1.6 config from last_rcvd */
- struct lr_server_data lsd;
- verrprint("%s: Unable to read %d.%d config %s.\n",
- progname, LUSTRE_MAJOR, LUSTRE_MINOR, filepnm);
-
- verrprint("Trying 1.4 config from last_rcvd\n");
- sprintf(filepnm, "%s/%s", tmpdir, LAST_RCVD);
-
- /* Construct debugfs command line. */
- snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s' %s",
- DEBUGFS, LAST_RCVD, filepnm, dev);
-
- ret = run_command(cmd, cmdsz);
- if (ret) {
- fprintf(stderr, "%s: Unable to dump %s file (%d)\n",
- progname, LAST_RCVD, ret);
- goto out_rmdir;
- }
-
- filep = fopen(filepnm, "r");
- if (!filep) {
- fprintf(stderr, "%s: Unable to open %s: %s\n",
- progname, filepnm, strerror(errno));
- ret = errno;
- verrprint("Contents of %s:\n", tmpdir);
- verbose+=2;
- snprintf(cmd, cmdsz, "ls -l %s/", tmpdir);
- run_command(cmd, cmdsz);
- verrprint("Contents of disk:\n");
- snprintf(cmd, cmdsz, "%s -c -R 'ls -l /' %s",
- DEBUGFS, dev);
- run_command(cmd, cmdsz);
-
- goto out_rmdir;
- }
- vprint("Reading %s\n", LAST_RCVD);
- ret = fread(&lsd, 1, sizeof(lsd), filep);
- if (ret < sizeof(lsd)) {
- fprintf(stderr, "%s: Short read (%d of %d)\n",
- progname, ret, (int)sizeof(lsd));
- ret = ferror(filep);
- if (ret)
- goto out_close;
- }
- vprint("Feature compat=%x, incompat=%x\n",
- lsd.lsd_feature_compat, lsd.lsd_feature_incompat);
-
- if ((lsd.lsd_feature_compat & OBD_COMPAT_OST) ||
- (lsd.lsd_feature_incompat & OBD_INCOMPAT_OST)) {
- mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
- mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
- } else if ((lsd.lsd_feature_compat & OBD_COMPAT_MDT) ||
- (lsd.lsd_feature_incompat & OBD_INCOMPAT_MDT)) {
- /* We must co-locate so mgs can see old logs.
- If user doesn't want this, they can copy the old
- logs manually and re-tunefs. */
- mop->mo_ldd.ldd_flags =
- LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_MGS;
- mop->mo_ldd.ldd_svindex = lsd.lsd_mdt_index;
- } else {
- /* If neither is set, we're pre-1.4.6, make a guess. */
- /* Construct debugfs command line. */
- snprintf(cmd, cmdsz, "%s -c -R 'rdump /%s %s' %s",
- DEBUGFS, MDT_LOGS_DIR, tmpdir, dev);
- run_command(cmd, cmdsz);
-
- sprintf(filepnm, "%s/%s", tmpdir, MDT_LOGS_DIR);
- if (lsd.lsd_ost_index > 0) {
- mop->mo_ldd.ldd_flags = LDD_F_SV_TYPE_OST;
- mop->mo_ldd.ldd_svindex = lsd.lsd_ost_index;
- } else {
- /* If there's a LOGS dir, it's an MDT */
- if ((ret = access(filepnm, F_OK)) == 0) {
- mop->mo_ldd.ldd_flags =
- LDD_F_SV_TYPE_MDT |
- LDD_F_SV_TYPE_MGS;
- /* Old MDT's are always index 0
- (pre CMD) */
- mop->mo_ldd.ldd_svindex = 0;
- } else {
- /* The index may not be correct */
- mop->mo_ldd.ldd_flags =
- LDD_F_SV_TYPE_OST | LDD_F_NEED_INDEX;
- verrprint("OST with unknown index\n");
- }
- }
- }
-
- ret = 0;
- memcpy(mop->mo_ldd.ldd_uuid, lsd.lsd_uuid,
- sizeof(mop->mo_ldd.ldd_uuid));
- mop->mo_ldd.ldd_flags |= LDD_F_UPGRADE14;
- }
- /* end COMPAT_146 */
-out_close:
- fclose(filep);
-
-out_rmdir:
- snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
- run_command(cmd, cmdsz);
- if (ret)
- verrprint("Failed to read old data (%d)\n", ret);
- return ret;
-}
-
-
void set_defaults(struct mkfs_opts *mop)
{
mop->mo_ldd.ldd_magic = LDD_MAGIC;
usage(stderr);
}
-static int add_param(char *buf, char *key, char *val)
+int add_param(char *buf, char *key, char *val)
{
int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
int start = strlen(buf);
mop->mo_ldd.ldd_flags |= LDD_F_NO_PRIMNODE;
servicenode_set = 1;
}
- failover = 1;
+ mop->mo_flags |= MO_FAILOVER;
break;
}
case 'G':
--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/utils/mount_utils_ldiskfs.c
+ *
+ * Author: Nathan Rutman <nathan@clusterfs.com>
+*/
+
+/* This source file is compiled into both mkfs.lustre and tunefs.lustre */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <mntent.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mount.h>
+#include <sys/utsname.h>
+
+#include <string.h>
+#include <getopt.h>
+#include <limits.h>
+#include <ctype.h>
+
+#ifdef __linux__
+/* libcfs.h is not really needed here, but on SLES10/PPC, fs.h includes idr.h
+ * which requires BITS_PER_LONG to be defined */
+#include <libcfs/libcfs.h>
+#ifndef BLKGETSIZE64
+#include <linux/fs.h> /* for BLKGETSIZE64 */
+#endif
+#include <linux/version.h>
+#endif
+#include <lustre_disk.h>
+#include <lustre_param.h>
+#include <lnet/lnetctl.h>
+#include <lustre_ver.h>
+#include "mount_utils.h"
+
+extern char *progname;
+
+#define L_BLOCK_SIZE 4096
+/* keep it less than LL_FID_NAMELEN */
+#define DUMMY_FILE_NAME_LEN 25
+#define EXT3_DIRENT_SIZE DUMMY_FILE_NAME_LEN
+
+/* Write the server config files */
+int write_local_files(struct mkfs_opts *mop)
+{
+ char mntpt[] = "/tmp/mntXXXXXX";
+ char filepnm[128];
+ char *dev;
+ FILE *filep;
+ int ret = 0;
+ size_t num;
+
+ /* Mount this device temporarily in order to write these files */
+ if (!mkdtemp(mntpt)) {
+ fprintf(stderr, "%s: Can't create temp mount point %s: %s\n",
+ progname, mntpt, strerror(errno));
+ return errno;
+ }
+
+ dev = mop->mo_device;
+ if (mop->mo_flags & MO_IS_LOOP)
+ dev = mop->mo_loopdev;
+
+ ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0,
+ mop->mo_ldd.ldd_mount_opts);
+ if (ret) {
+ fprintf(stderr, "%s: Unable to mount %s: %s\n",
+ progname, dev, strerror(errno));
+ ret = errno;
+ if (errno == ENODEV) {
+ fprintf(stderr, "Is the %s module available?\n",
+ MT_STR(&mop->mo_ldd));
+ }
+ goto out_rmdir;
+ }
+
+ /* Set up initial directories */
+ sprintf(filepnm, "%s/%s", mntpt, MOUNT_CONFIGS_DIR);
+ ret = mkdir(filepnm, 0777);
+ if ((ret != 0) && (errno != EEXIST)) {
+ fprintf(stderr, "%s: Can't make configs dir %s (%s)\n",
+ progname, filepnm, strerror(errno));
+ goto out_umnt;
+ } else if (errno == EEXIST) {
+ ret = 0;
+ }
+
+ /* Save the persistent mount data into a file. Lustre must pre-read
+ this file to get the real mount options. */
+ vprint("Writing %s\n", MOUNT_DATA_FILE);
+ sprintf(filepnm, "%s/%s", mntpt, MOUNT_DATA_FILE);
+ filep = fopen(filepnm, "w");
+ if (!filep) {
+ fprintf(stderr, "%s: Unable to create %s file: %s\n",
+ progname, filepnm, strerror(errno));
+ goto out_umnt;
+ }
+ num = fwrite(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
+ if (num < 1 && ferror(filep)) {
+ fprintf(stderr, "%s: Unable to write to file (%s): %s\n",
+ progname, filepnm, strerror(errno));
+ goto out_umnt;
+ }
+ fclose(filep);
+
+out_umnt:
+ umount(mntpt);
+out_rmdir:
+ rmdir(mntpt);
+ return ret;
+}
+
+int read_local_files(struct mkfs_opts *mop)
+{
+ char tmpdir[] = "/tmp/dirXXXXXX";
+ char cmd[PATH_MAX];
+ char filepnm[128];
+ char *dev;
+ FILE *filep;
+ int ret = 0;
+ int cmdsz = sizeof(cmd);
+
+ /* Make a temporary directory to hold Lustre data files. */
+ if (!mkdtemp(tmpdir)) {
+ fprintf(stderr, "%s: Can't create temporary directory %s: %s\n",
+ progname, tmpdir, strerror(errno));
+ return errno;
+ }
+
+ dev = mop->mo_device;
+
+ /* TODO: it's worth observing the get_mountdata() function that is
+ in mount_utils.c for getting the mountdata out of the
+ filesystem */
+
+ /* Construct debugfs command line. */
+ snprintf(cmd, cmdsz, "%s -c -R 'dump /%s %s/mountdata' '%s'",
+ DEBUGFS, MOUNT_DATA_FILE, tmpdir, dev);
+
+ ret = run_command(cmd, cmdsz);
+ if (ret)
+ verrprint("%s: Unable to dump %s dir (%d)\n",
+ progname, MOUNT_CONFIGS_DIR, ret);
+
+ sprintf(filepnm, "%s/mountdata", tmpdir);
+ filep = fopen(filepnm, "r");
+ if (filep) {
+ size_t num_read;
+ vprint("Reading %s\n", MOUNT_DATA_FILE);
+ num_read = fread(&mop->mo_ldd, sizeof(mop->mo_ldd), 1, filep);
+ if (num_read < 1 && ferror(filep)) {
+ fprintf(stderr, "%s: Unable to read from file %s: %s\n",
+ progname, filepnm, strerror(errno));
+ goto out_close;
+ }
+ }
+out_close:
+ fclose(filep);
+
+ snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
+ run_command(cmd, cmdsz);
+ if (ret)
+ verrprint("Failed to read old data (%d)\n", ret);
+ return ret;
+}
+
+
+/* Display the need for the latest e2fsprogs to be installed. make_backfs
+ * indicates if the caller is make_lustre_backfs() or not. */
+void disp_old_e2fsprogs_msg(const char *feature, int make_backfs)
+{
+ static int msg_displayed;
+
+ if (msg_displayed) {
+ fprintf(stderr, "WARNING: %s does not support %s "
+ "feature.\n\n", E2FSPROGS, feature);
+ return;
+ }
+
+ msg_displayed++;
+
+ fprintf(stderr, "WARNING: The %s package currently installed on "
+ "your system does not support \"%s\" feature.\n",
+ E2FSPROGS, feature);
+#if !(HAVE_LDISKFSPROGS)
+ fprintf(stderr, "Please install the latest version of e2fsprogs from\n"
+ "http://downloads.whamcloud.com/public/e2fsprogs/latest/\n"
+ "to enable this feature.\n");
+#endif
+ if (make_backfs)
+ fprintf(stderr, "Feature will not be enabled until %s"
+ "is updated and '%s -O %s %%{device}' "
+ "is run.\n\n", E2FSPROGS, TUNE2FS, feature);
+}
+
+/* Check whether the file exists in the device */
+static int file_in_dev(char *file_name, char *dev_name)
+{
+ FILE *fp;
+ char debugfs_cmd[256];
+ unsigned int inode_num;
+ int i;
+
+ /* Construct debugfs command line. */
+ snprintf(debugfs_cmd, sizeof(debugfs_cmd),
+ "%s -c -R 'stat %s' '%s' 2>&1 | egrep '(Inode|unsupported)'",
+ DEBUGFS, file_name, dev_name);
+
+ fp = popen(debugfs_cmd, "r");
+ if (!fp) {
+ fprintf(stderr, "%s: %s\n", progname, strerror(errno));
+ return 0;
+ }
+
+ if (fscanf(fp, "Inode: %u", &inode_num) == 1) { /* exist */
+ pclose(fp);
+ return 1;
+ }
+ i = fread(debugfs_cmd, 1, sizeof(debugfs_cmd), fp);
+ if (i) {
+ debugfs_cmd[i] = 0;
+ fprintf(stderr, "%s", debugfs_cmd);
+ if (strstr(debugfs_cmd, "unsupported feature")) {
+ disp_old_e2fsprogs_msg("an unknown", 0);
+ }
+ pclose(fp);
+ return -1;
+ }
+ pclose(fp);
+ return 0;
+}
+
+/* Check whether the device has already been used with lustre */
+int is_lustre_target(struct mkfs_opts *mop)
+{
+ int rc;
+
+ vprint("checking for existing Lustre data: ");
+
+ if ((rc = file_in_dev(MOUNT_DATA_FILE, mop->mo_device))) {
+ vprint("found %s\n",
+ (rc == 1) ? MOUNT_DATA_FILE : "extents");
+ /* in the -1 case, 'extents' means this really IS a lustre
+ target */
+ return rc;
+ }
+
+ if ((rc = file_in_dev(LAST_RCVD, mop->mo_device))) {
+ vprint("found %s\n", LAST_RCVD);
+ return rc;
+ }
+
+ vprint("not found\n");
+ return 0; /* The device is not a lustre target. */
+}
+
+
+
+/* Check if a certain feature is supported by e2fsprogs.
+ * Firstly we try to use "debugfs supported_features" command to check if
+ * the feature is supported. If this fails we try to set this feature with
+ * mke2fs to check for its support. */
+static int is_e2fsprogs_feature_supp(const char *feature)
+{
+ static char supp_features[4096] = "";
+ FILE *fp;
+ char cmd[PATH_MAX];
+ char imgname[] = "/tmp/test-img-XXXXXX";
+ int fd = -1;
+ int ret = 1;
+
+ if (supp_features[0] == '\0') {
+ snprintf(cmd, sizeof(cmd), "%s -c -R supported_features 2>&1",
+ DEBUGFS);
+
+ /* Using popen() instead of run_command() since debugfs does
+ * not return proper error code if command is not supported */
+ fp = popen(cmd, "r");
+ if (!fp) {
+ fprintf(stderr, "%s: %s\n", progname, strerror(errno));
+ return 0;
+ }
+ ret = fread(supp_features, 1, sizeof(supp_features), fp);
+ fclose(fp);
+ }
+ if (ret > 0 && strstr(supp_features,
+ strncmp(feature, "-O ", 3) ? feature : feature+3))
+ return 0;
+
+ if ((fd = mkstemp(imgname)) < 0)
+ return -1;
+ else
+ close(fd);
+
+ snprintf(cmd, sizeof(cmd), "%s -F %s %s 100 >/dev/null 2>&1",
+ MKE2FS, feature, imgname);
+ /* run_command() displays the output of mke2fs when it fails for
+ * some feature, so use system() directly */
+ ret = system(cmd);
+ unlink(imgname);
+
+ return ret;
+}
+
+
+/**
+ * append_unique: append @key or @key=@val pair to @buf only if @key does not
+ * exists
+ * @buf: buffer to hold @key or @key=@val
+ * @prefix: prefix string before @key
+ * @key: key string
+ * @val: value string if it's a @key=@val pair
+ */
+static void append_unique(char *buf, char *prefix, char *key, char *val,
+ size_t maxbuflen)
+{
+ char *anchor, *end;
+ int len;
+
+ if (key == NULL)
+ return;
+
+ anchor = end = strstr(buf, key);
+ /* try to find exact match string in @buf */
+ while (end && *end != '\0' && *end != ',' && *end != ' ' && *end != '=')
+ ++end;
+ len = end - anchor;
+ if (anchor == NULL || strlen(key) != len ||
+ strncmp(anchor, key, len) != 0) {
+ if (prefix != NULL)
+ strscat(buf, prefix, maxbuflen);
+
+ strscat(buf, key, maxbuflen);
+ if (val != NULL) {
+ strscat(buf, "=", maxbuflen);
+ strscat(buf, val, maxbuflen);
+ }
+ }
+}
+
+static void enable_default_ext4_features(struct mkfs_opts *mop, char *anchor,
+ size_t maxbuflen, int user_spec)
+{
+ if (IS_OST(&mop->mo_ldd)) {
+ append_unique(anchor, user_spec ? "," : " -O ",
+ "extents", NULL, sizeof(mop->mo_mkfsopts));
+ append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
+ } else if (IS_MDT(&mop->mo_ldd)) {
+ append_unique(anchor, user_spec ? "," : " -O ",
+ "dirdata", NULL, maxbuflen);
+ append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
+ append_unique(anchor, ",", "^extents", NULL, maxbuflen);
+ } else {
+ append_unique(anchor, user_spec ? "," : " -O ",
+ "uninit_bg", NULL, maxbuflen);
+ }
+
+ /* Multiple mount protection enabled only if failover node specified */
+ if (mop->mo_flags & MO_FAILOVER) {
+ if (is_e2fsprogs_feature_supp("-O mmp") == 0)
+ append_unique(anchor, ",", "mmp", NULL, maxbuflen);
+ else
+ disp_old_e2fsprogs_msg("mmp", 1);
+ }
+
+ /* Allow more than 65000 subdirectories */
+ if (is_e2fsprogs_feature_supp("-O dir_nlink") == 0)
+ append_unique(anchor, ",", "dir_nlink", NULL, maxbuflen);
+
+ /* The following options are only valid for ext4-based ldiskfs.
+ * If --backfstype=ext3 is specified, do not enable them. */
+ if (mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3)
+ return;
+
+ /* Allow files larger than 2TB. Also needs LU-16, but not harmful. */
+ if (is_e2fsprogs_feature_supp("-O huge_file") == 0)
+ append_unique(anchor, ",", "huge_file", NULL, maxbuflen);
+
+ /* Enable large block addresses if the LUN is over 2^32 blocks. */
+ if (mop->mo_device_sz / (L_BLOCK_SIZE >> 10) >= 0x100002000ULL &&
+ is_e2fsprogs_feature_supp("-O 64bit") == 0)
+ append_unique(anchor, ",", "64bit", NULL, maxbuflen);
+
+ /* Cluster inode/block bitmaps and inode table for more efficient IO.
+ * Align the flex groups on a 1MB boundary for better performance. */
+ /* This -O feature needs to go last, since it adds the "-G" option. */
+ if (is_e2fsprogs_feature_supp("-O flex_bg") == 0) {
+ char tmp_buf[64];
+
+ append_unique(anchor, ",", "flex_bg", NULL, maxbuflen);
+
+ if (IS_OST(&mop->mo_ldd)) {
+ snprintf(tmp_buf, sizeof(tmp_buf), " -G %u",
+ (1 << 20) / L_BLOCK_SIZE);
+ strscat(anchor, tmp_buf, maxbuflen);
+ }
+ }
+ /* Don't add any more "-O" options here, see last comment above */
+}
+
+/**
+ * moveopts_to_end: find the option string, move remaining strings to
+ * where option string starts, and append the option
+ * string at the end
+ * @start: where the option string starts before the move
+ * RETURN: where the option string starts after the move
+ */
+static char *moveopts_to_end(char *start)
+{
+ char save[512];
+ char *end, *idx;
+
+ /* skip whitespace before options */
+ end = start + 2;
+ while (*end == ' ')
+ ++end;
+
+ /* find end of option characters */
+ while (*end != ' ' && *end != '\0')
+ ++end;
+
+ /* save options */
+ strncpy(save, start, end - start);
+ save[end - start] = '\0';
+
+ /* move remaining options up front */
+ if (*end)
+ memmove(start, end, strlen(end));
+ *(start + strlen(end)) = '\0';
+
+ /* append the specified options */
+ if (*(start + strlen(start) - 1) != ' ')
+ strcat(start, " ");
+ idx = start + strlen(start);
+ strcat(start, save);
+
+ return idx;
+}
+
+/* Build fs according to type */
+int make_lustre_backfs(struct mkfs_opts *mop)
+{
+ __u64 device_sz = mop->mo_device_sz, block_count = 0;
+ char mkfs_cmd[PATH_MAX];
+ char buf[64];
+ char *start;
+ char *dev;
+ int ret = 0, ext_opts = 0;
+ size_t maxbuflen;
+
+ if (!(mop->mo_flags & MO_IS_LOOP)) {
+ mop->mo_device_sz = get_device_size(mop->mo_device);
+
+ if (mop->mo_device_sz == 0)
+ return ENODEV;
+
+ /* Compare to real size */
+ if (device_sz == 0 || device_sz > mop->mo_device_sz)
+ device_sz = mop->mo_device_sz;
+ else
+ mop->mo_device_sz = device_sz;
+ }
+
+ if (mop->mo_device_sz != 0) {
+ if (mop->mo_device_sz < 8096){
+ fprintf(stderr, "%s: size of filesystem must be larger "
+ "than 8MB, but is set to %lldKB\n",
+ progname, (long long)mop->mo_device_sz);
+ return EINVAL;
+ }
+ block_count = mop->mo_device_sz / (L_BLOCK_SIZE >> 10);
+ /* If the LUN size is just over 2^32 blocks, limit the
+ * filesystem size to 2^32-1 blocks to avoid problems with
+ * ldiskfs/mkfs not handling this size. Bug 22906 */
+ if (block_count > 0xffffffffULL && block_count < 0x100002000ULL)
+ block_count = 0xffffffffULL;
+ }
+
+ if ((mop->mo_ldd.ldd_mount_type == LDD_MT_EXT3) ||
+ (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS) ||
+ (mop->mo_ldd.ldd_mount_type == LDD_MT_LDISKFS2)) {
+ long inode_size = 0;
+
+ /* Journal size in MB */
+ if (strstr(mop->mo_mkfsopts, "-J") == NULL) {
+ /* Choose our own default journal size */
+ long journal_sz = 0, max_sz;
+ if (device_sz > 1024 * 1024) /* 1GB */
+ journal_sz = (device_sz / 102400) * 4;
+ /* cap journal size at 1GB */
+ if (journal_sz > 1024L)
+ journal_sz = 1024L;
+ /* man mkfs.ext3 */
+ max_sz = (102400 * L_BLOCK_SIZE) >> 20; /* 400MB */
+ if (journal_sz > max_sz)
+ journal_sz = max_sz;
+ if (journal_sz) {
+ sprintf(buf, " -J size=%ld", journal_sz);
+ strscat(mop->mo_mkfsopts, buf,
+ sizeof(mop->mo_mkfsopts));
+ }
+ }
+
+ /* Inode size (for extended attributes). The LOV EA size is
+ * 32 (EA hdr) + 32 (lov_mds_md) + stripes * 24 (lov_ost_data),
+ * and we want some margin above that for ACLs, other EAs... */
+ if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
+ if (IS_MDT(&mop->mo_ldd)) {
+ if (mop->mo_stripe_count > 72)
+ inode_size = 512; /* bz 7241 */
+ /* see also "-i" below for EA blocks */
+ else if (mop->mo_stripe_count > 32)
+ inode_size = 2048;
+ else if (mop->mo_stripe_count > 10)
+ inode_size = 1024;
+ else
+ inode_size = 512;
+ } else if (IS_OST(&mop->mo_ldd)) {
+ /* We store MDS FID and OST objid in EA on OST
+ * we need to make inode bigger as well. */
+ inode_size = 256;
+ }
+
+ if (inode_size > 0) {
+ sprintf(buf, " -I %ld", inode_size);
+ strscat(mop->mo_mkfsopts, buf,
+ sizeof(mop->mo_mkfsopts));
+ }
+ }
+
+ /* Bytes_per_inode: disk size / num inodes */
+ if (strstr(mop->mo_mkfsopts, "-i") == NULL &&
+ strstr(mop->mo_mkfsopts, "-N") == NULL) {
+ long bytes_per_inode = 0;
+
+ /* Allocate more inodes on MDT devices. There is
+ * no data stored on the MDT, and very little extra
+ * metadata beyond the inode. It could go down as
+ * low as 1024 bytes, but this is conservative.
+ * Account for external EA blocks for wide striping. */
+ if (IS_MDT(&mop->mo_ldd)) {
+ bytes_per_inode = inode_size + 1536;
+
+ if (mop->mo_stripe_count > 72) {
+ int extra = mop->mo_stripe_count * 24;
+ extra = ((extra - 1) | 4095) + 1;
+ bytes_per_inode += extra;
+ }
+ }
+
+ /* Allocate fewer inodes on large OST devices. Most
+ * filesystems can be much more aggressive than even
+ * this, but it is impossible to know in advance. */
+ if (IS_OST(&mop->mo_ldd)) {
+ /* OST > 16TB assume average file size 1MB */
+ if (device_sz > (16ULL << 30))
+ bytes_per_inode = 1024 * 1024;
+ /* OST > 4TB assume average file size 512kB */
+ else if (device_sz > (4ULL << 30))
+ bytes_per_inode = 512 * 1024;
+ /* OST > 1TB assume average file size 256kB */
+ else if (device_sz > (1ULL << 30))
+ bytes_per_inode = 256 * 1024;
+ /* OST > 10GB assume average file size 64kB,
+ * plus a bit so that inodes will fit into a
+ * 256x flex_bg without overflowing */
+ else if (device_sz > (10ULL << 20))
+ bytes_per_inode = 69905;
+ }
+
+ if (bytes_per_inode > 0) {
+ sprintf(buf, " -i %ld", bytes_per_inode);
+ strscat(mop->mo_mkfsopts, buf,
+ sizeof(mop->mo_mkfsopts));
+ }
+ }
+
+ if (verbose < 2) {
+ strscat(mop->mo_mkfsopts, " -q",
+ sizeof(mop->mo_mkfsopts));
+ }
+
+ /* start handle -O mkfs options */
+ if ((start = strstr(mop->mo_mkfsopts, "-O")) != NULL) {
+ if (strstr(start + 2, "-O") != NULL) {
+ fprintf(stderr,
+ "%s: don't specify multiple -O options\n",
+ progname);
+ return EINVAL;
+ }
+ start = moveopts_to_end(start);
+ maxbuflen = sizeof(mop->mo_mkfsopts) -
+ (start - mop->mo_mkfsopts) - strlen(start);
+ enable_default_ext4_features(mop, start, maxbuflen, 1);
+ } else {
+ start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts),
+ maxbuflen = sizeof(mop->mo_mkfsopts) -
+ strlen(mop->mo_mkfsopts);
+ enable_default_ext4_features(mop, start, maxbuflen, 0);
+ }
+ /* end handle -O mkfs options */
+
+ /* start handle -E mkfs options */
+ if ((start = strstr(mop->mo_mkfsopts, "-E")) != NULL) {
+ if (strstr(start + 2, "-E") != NULL) {
+ fprintf(stderr,
+ "%s: don't specify multiple -E options\n",
+ progname);
+ return EINVAL;
+ }
+ start = moveopts_to_end(start);
+ maxbuflen = sizeof(mop->mo_mkfsopts) -
+ (start - mop->mo_mkfsopts) - strlen(start);
+ ext_opts = 1;
+ } else {
+ start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts);
+ maxbuflen = sizeof(mop->mo_mkfsopts) -
+ strlen(mop->mo_mkfsopts);
+ }
+
+ /* In order to align the filesystem metadata on 1MB boundaries,
+ * give a resize value that will reserve a power-of-two group
+ * descriptor blocks, but leave one block for the superblock.
+ * Only useful for filesystems with < 2^32 blocks due to resize
+ * limitations. */
+ if (IS_OST(&mop->mo_ldd) && mop->mo_device_sz > 100 * 1024 &&
+ mop->mo_device_sz * 1024 / L_BLOCK_SIZE <= 0xffffffffULL) {
+ unsigned group_blocks = L_BLOCK_SIZE * 8;
+ unsigned desc_per_block = L_BLOCK_SIZE / 32;
+ unsigned resize_blks;
+
+ resize_blks = (1ULL<<32) - desc_per_block*group_blocks;
+ snprintf(buf, sizeof(buf), "%u", resize_blks);
+ append_unique(start, ext_opts ? "," : " -E ",
+ "resize", buf, maxbuflen);
+ ext_opts = 1;
+ }
+
+ /* Avoid zeroing out the full journal - speeds up mkfs */
+ if (is_e2fsprogs_feature_supp("-E lazy_journal_init") == 0)
+ append_unique(start, ext_opts ? "," : " -E ",
+ "lazy_journal_init", NULL, maxbuflen);
+ /* end handle -E mkfs options */
+
+ /* Allow reformat of full devices (as opposed to
+ partitions.) We already checked for mounted dev. */
+ strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
+
+ snprintf(mkfs_cmd, sizeof(mkfs_cmd),
+ "%s -j -b %d -L %s ", MKE2FS, L_BLOCK_SIZE,
+ mop->mo_ldd.ldd_svname);
+ } else {
+ fprintf(stderr,"%s: unsupported fs type: %d (%s)\n",
+ progname, mop->mo_ldd.ldd_mount_type,
+ MT_STR(&mop->mo_ldd));
+ return EINVAL;
+ }
+
+ /* For loop device format the dev, not the filename */
+ dev = mop->mo_device;
+ if (mop->mo_flags & MO_IS_LOOP)
+ dev = mop->mo_loopdev;
+
+ vprint("formatting backing filesystem %s on %s\n",
+ MT_STR(&mop->mo_ldd), dev);
+ vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
+ vprint("\t4k blocks "LPU64"\n", block_count);
+ vprint("\toptions %s\n", mop->mo_mkfsopts);
+
+ /* mkfs_cmd's trailing space is important! */
+ strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
+ strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
+ strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
+ if (block_count != 0) {
+ sprintf(buf, " "LPU64, block_count);
+ strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
+ }
+
+ vprint("mkfs_cmd = %s\n", mkfs_cmd);
+ ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
+ if (ret) {
+ fatal();
+ fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
+ }
+ return ret;
+}
+
+/* return canonicalized absolute pathname, even if the target file does not
+ * exist, unlike realpath */
+static char *absolute_path(char *devname)
+{
+ char buf[PATH_MAX + 1];
+ char *path;
+ char *ptr;
+
+ path = malloc(PATH_MAX + 1);
+ if (path == NULL)
+ return NULL;
+
+ if (devname[0] != '/') {
+ if (getcwd(buf, sizeof(buf) - 1) == NULL)
+ return NULL;
+ strcat(buf, "/");
+ strcat(buf, devname);
+ } else {
+ strcpy(buf, devname);
+ }
+ /* truncate filename before calling realpath */
+ ptr = strrchr(buf, '/');
+ if (ptr == NULL) {
+ free(path);
+ return NULL;
+ }
+ *ptr = '\0';
+ if (path != realpath(buf, path)) {
+ free(path);
+ return NULL;
+ }
+ /* add the filename back */
+ strcat(path, "/");
+ strcat(path, ptr + 1);
+ return path;
+}
+
+/* Determine if a device is a block device (as opposed to a file) */
+int is_block(char* devname)
+{
+ struct stat st;
+ int ret = 0;
+ char *devpath;
+
+ devpath = absolute_path(devname);
+ if (devpath == NULL) {
+ fprintf(stderr, "%s: failed to resolve path to %s\n",
+ progname, devname);
+ return -1;
+ }
+
+ ret = access(devname, F_OK);
+ if (ret != 0) {
+ if (strncmp(devpath, "/dev/", 5) == 0) {
+ /* nobody sane wants to create a loopback file under
+ * /dev. Let's just report the device doesn't exist */
+ fprintf(stderr, "%s: %s apparently does not exist\n",
+ progname, devpath);
+ ret = -1;
+ goto out;
+ }
+ ret = 0;
+ goto out;
+ }
+ ret = stat(devpath, &st);
+ if (ret != 0) {
+ fprintf(stderr, "%s: cannot stat %s\n", progname, devpath);
+ goto out;
+ }
+ ret = S_ISBLK(st.st_mode);
+out:
+ free(devpath);
+ return ret;
+}
+
git://git.whamcloud.com / fs / lustre-release.git / commitdiff