+++ /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.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- *
- * Copyright (c) 2012, 2016, Intel Corporation.
- */
-/*
- * 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 <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <mntent.h>
-#include <glob.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>
-
-#ifndef BLKGETSIZE64
-#include <linux/fs.h> /* for BLKGETSIZE64 */
-#endif
-#include <linux/types.h>
-#include <linux/version.h>
-#include <lnet/lnetctl.h>
-#include <lustre_ver.h>
-
-#ifdef HAVE_SELINUX
-#include <selinux/selinux.h>
-#endif
-
-#include "mount_utils.h"
-
-#define MAX_HW_SECTORS_KB_PATH "queue/max_hw_sectors_kb"
-#define MAX_SECTORS_KB_PATH "queue/max_sectors_kb"
-#define SCHEDULER_PATH "queue/scheduler"
-#define STRIPE_CACHE_SIZE "md/stripe_cache_size"
-
-#define DEFAULT_SCHEDULER "deadline"
-
-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
-
-static void append_unique(char *buf, char *prefix, char *key, char *val,
- size_t maxbuflen);
-static int is_e2fsprogs_feature_supp(const char *feature);
-static void disp_old_e2fsprogs_msg(const char *feature, int make_backfs);
-
-/*
- * Concatenate context of the temporary mount point if selinux is enabled
- */
-#ifdef HAVE_SELINUX
-static void append_context_for_mount(char *mntpt, struct mkfs_opts *mop)
-{
- security_context_t fcontext;
-
- if (getfilecon(mntpt, &fcontext) < 0) {
- /* Continuing with default behaviour */
- fprintf(stderr, "%s: Get file context failed : %s\n",
- progname, strerror(errno));
- return;
- }
-
- if (fcontext != NULL) {
- append_unique(mop->mo_ldd.ldd_mount_opts,
- ",", "context", fcontext,
- sizeof(mop->mo_ldd.ldd_mount_opts));
- freecon(fcontext);
- }
-}
-#endif
-
-/* 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;
- int len;
-
- path = malloc(sizeof(buf));
- if (path == NULL)
- return NULL;
-
- if (devname[0] != '/') {
- if (getcwd(buf, sizeof(buf) - 1) == NULL) {
- free(path);
- return NULL;
- }
- len = snprintf(path, sizeof(buf), "%s/%s", buf, devname);
- if (len >= sizeof(buf)) {
- free(path);
- return NULL;
- }
- } else {
- len = snprintf(path, sizeof(buf), "%s", devname);
- if (len >= sizeof(buf)) {
- free(path);
- return NULL;
- }
- }
-
- /* truncate filename before calling realpath */
- ptr = strrchr(path, '/');
- if (ptr == NULL) {
- free(path);
- return NULL;
- }
- *ptr = '\0';
- if (buf != realpath(path, buf)) {
- free(path);
- return NULL;
- }
- /* add the filename back */
- len = snprintf(path, PATH_MAX, "%s/%s", buf, ptr+1);
- if (len >= PATH_MAX) {
- free(path);
- return NULL;
- }
- return path;
-}
-
-/* Determine if a device is a block device (as opposed to a file) */
-static 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;
-}
-
-static int is_feature_enabled(const char *feature, const char *devpath)
-{
- char cmd[PATH_MAX];
- FILE *fp;
- char enabled_features[4096] = "";
- int ret = 1;
-
- snprintf(cmd, sizeof(cmd), "%s -c -R features %s 2>&1",
- DEBUGFS, devpath);
-
- /* 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(enabled_features, 1, sizeof(enabled_features) - 1, fp);
- enabled_features[ret] = '\0';
- pclose(fp);
-
- if (strstr(enabled_features, feature))
- return 1;
- return 0;
-}
-
-/* Write the server config files */
-int ldiskfs_write_ldd(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;
- }
-
- /*
- * Append file context to mount options if SE Linux is enabled
- */
- #ifdef HAVE_SELINUX
- if (is_selinux_enabled() > 0)
- append_context_for_mount(mntpt, mop);
- #endif
-
- dev = mop->mo_device;
- if (mop->mo_flags & MO_IS_LOOP)
- dev = mop->mo_loopdev;
-
- /* Multiple mount protection enabled if failover node specified */
- if (mop->mo_flags & MO_FAILOVER &&
- !is_feature_enabled("mmp", dev)) {
- if (is_e2fsprogs_feature_supp("-O mmp") == 0) {
- char *command = filepnm;
-
- snprintf(command, sizeof(filepnm),
- TUNE2FS" -O mmp '%s' >/dev/null 2>&1", dev);
- ret = run_command(command, sizeof(filepnm));
- if (ret)
- fprintf(stderr,
- "%s: Unable to set 'mmp' on %s: %d\n",
- progname, dev, ret);
- } else
- disp_old_e2fsprogs_msg("mmp", 1);
- }
-
- ret = mount(dev, mntpt, MT_STR(&mop->mo_ldd), 0,
- (mop->mo_mountopts == NULL) ?
- "errors=remount-ro" : mop->mo_mountopts);
- 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));
- fclose(filep);
- goto out_umnt;
- }
- fsync(filep->_fileno);
- fclose(filep);
-
-out_umnt:
- umount(mntpt);
-out_rmdir:
- rmdir(mntpt);
- return ret;
-}
-
-static int readcmd(char *cmd, char *buf, int len)
-{
- FILE *fp;
- int red;
-
- fp = popen(cmd, "r");
- if (!fp)
- return errno;
-
- red = fread(buf, 1, len, fp);
- pclose(fp);
-
- /* strip trailing newline */
- if (buf[red - 1] == '\n')
- buf[red - 1] = '\0';
-
- return (red == 0) ? -ENOENT : 0;
-}
-
-int ldiskfs_read_ldd(char *dev, struct lustre_disk_data *mo_ldd)
-{
- char tmpdir[] = "/tmp/dirXXXXXX";
- char cmd[PATH_MAX];
- char filepnm[128];
- 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;
- }
-
- /* 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(mo_ldd, sizeof(*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));
- }
- fclose(filep);
- }
-
- snprintf(cmd, cmdsz, "rm -rf %s", tmpdir);
- run_command(cmd, cmdsz);
- if (ret)
- verrprint("Failed to read old data (%d)\n", ret);
-
- /* As long as we at least have the label, we're good to go */
- snprintf(cmd, sizeof(cmd), E2LABEL" %s", dev);
- ret = readcmd(cmd, mo_ldd->ldd_svname, sizeof(mo_ldd->ldd_svname) - 1);
-
- return ret;
-}
-
-int ldiskfs_erase_ldd(struct mkfs_opts *mop, char *param)
-{
- return 0;
-}
-
-void ldiskfs_print_ldd_params(struct mkfs_opts *mop)
-{
- printf("Parameters:%s\n", mop->mo_ldd.ldd_params);
-}
-
-/* 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"
- "https://downloads.hpdd.intel.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) - 1, 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 ldiskfs_is_lustre(char *dev, unsigned *mount_type)
-{
- int ret;
-
- ret = file_in_dev(MOUNT_DATA_FILE, dev);
- if (ret) {
- /* in the -1 case, 'extents' means IS a lustre target */
- *mount_type = LDD_MT_LDISKFS;
- return 1;
- }
-
- ret = file_in_dev(LAST_RCVD, dev);
- if (ret) {
- *mount_type = LDD_MT_LDISKFS;
- return 1;
- }
-
- return 0;
-}
-
-/* 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) - 1, fp);
- supp_features[ret] = '\0';
- pclose(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);
- strscat(buf, "\"", maxbuflen);
- }
- }
-}
-
-static int 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, maxbuflen);
- 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 0;
-
- /* Enable quota by default */
- if (is_e2fsprogs_feature_supp("-O quota") == 0) {
- append_unique(anchor, ",", "quota", NULL, maxbuflen);
- } else {
- fatal();
- fprintf(stderr, "\"-O quota\" must be supported by "
- "e2fsprogs, please upgrade your e2fsprogs.\n");
- return EINVAL;
- }
-
- /* 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_kb / (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) &&
- strstr(mop->mo_mkfsopts, "-G") == NULL) {
- 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 */
- return 0;
-}
-
-/**
- * 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)
-{
- size_t len;
- 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;
-
- len = end - start;
- if (len >= sizeof(save))
- len = sizeof(save) - 1;
-
- /* save options */
- strncpy(save, start, len);
- save[len] = '\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 ldiskfs_make_lustre(struct mkfs_opts *mop)
-{
- __u64 device_kb = mop->mo_device_kb, 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_kb = get_device_size(mop->mo_device);
-
- if (mop->mo_device_kb == 0)
- return ENODEV;
-
- /* Compare to real size */
- if (device_kb == 0 || device_kb > mop->mo_device_kb)
- device_kb = mop->mo_device_kb;
- else
- mop->mo_device_kb = device_kb;
- }
-
- if (mop->mo_device_kb != 0) {
- if (mop->mo_device_kb < 32384) {
- fprintf(stderr, "%s: size of filesystem must be larger "
- "than 32MB, but is set to %lldKB\n",
- progname, (long long)mop->mo_device_kb);
- return EINVAL;
- }
- block_count = mop->mo_device_kb / (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 &&
- device_kb > 1024 * 1024) {
- /* Choose our own default journal size */
- long journal_mb = 0, max_mb;
-
- /* cap journal size at 4GB for MDT,
- * leave it at 400MB for OSTs. */
- if (IS_MDT(&mop->mo_ldd))
- max_mb = 4096;
- else if (IS_OST(&mop->mo_ldd))
- max_mb = 400;
- else /* Use mke2fs default size for MGS */
- max_mb = 0;
-
- /* Use at most 4% of device for journal */
- journal_mb = device_kb * 4 / (1024 * 100);
- if (journal_mb > max_mb)
- journal_mb = max_mb;
-
- if (journal_mb) {
- sprintf(buf, " -J size=%ld", journal_mb);
- strscat(mop->mo_mkfsopts, buf,
- sizeof(mop->mo_mkfsopts));
- }
- }
-
- /*
- * The inode size is constituted by following elements
- * (assuming all files are in composite layout and has
- * 3 components):
- *
- * ldiskfs inode size: 156
- * extended attributes size, including:
- * ext4_xattr_header: 32
- * LOV EA size: 32(lov_comp_md_v1) +
- * 3 * 40(lov_comp_md_entry_v1) +
- * 3 * 32(lov_mds_md) +
- * stripes * 24(lov_ost_data) +
- * 16(xattr_entry) + 3(lov)
- * LMA EA size: 24(lustre_mdt_attrs) +
- * 16(xattr_entry) + 3(lma)
- * link EA size: 24(link_ea_header) + 18(link_ea_entry) +
- * (filename) + 16(xattr_entry) + 4(link)
- * and some margin for 4-byte alignment, ACLs and other EAs.
- *
- * If we say the average filename length is about 32 bytes,
- * the calculation looks like:
- * 156 + 32 + (32+3*(40 + 32)+24*N+19) + (24+19) +
- * (24+18+~32+20) + other <= 512*2^m, {m=0,1,2,3}
- */
- if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
- if (IS_MDT(&mop->mo_ldd)) {
- if (mop->mo_stripe_count > 59)
- inode_size = 512; /* bz 7241 */
- /* see also "-i" below for EA blocks */
- else if (mop->mo_stripe_count > 16)
- inode_size = 2048;
- else
- inode_size = 1024;
- } else if (IS_OST(&mop->mo_ldd)) {
- /* We store MDS FID and necessary composite
- * layout information in the OST object EA. */
- inode_size = 512;
- }
-
- 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 > 59) {
- 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_kb > (16ULL << 30))
- bytes_per_inode = 1024 * 1024;
- /* OST > 4TB assume average file size 512kB */
- else if (device_kb > (4ULL << 30))
- bytes_per_inode = 512 * 1024;
- /* OST > 1TB assume average file size 256kB */
- else if (device_kb > (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_kb > (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);
- ret = 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);
- ret = enable_default_ext4_features(mop, start, maxbuflen, 0);
- }
- if (ret)
- return ret;
- /* 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 (strstr(mop->mo_mkfsopts, "meta_bg") == NULL &&
- IS_OST(&mop->mo_ldd) && mop->mo_device_kb > 100 * 1024 &&
- mop->mo_device_kb * 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 %ju\n", (uintmax_t)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) {
- snprintf(buf, sizeof(buf), " %ju",
- (uintmax_t)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;
-}
-
-int ldiskfs_prepare_lustre(struct mkfs_opts *mop,
- char *wanted_mountopts, size_t len)
-{
- struct lustre_disk_data *ldd = &mop->mo_ldd;
- int ret;
-
- /* Set MO_IS_LOOP to indicate a loopback device is needed */
- ret = is_block(mop->mo_device);
- if (ret < 0) {
- return errno;
- } else if (ret == 0) {
- mop->mo_flags |= MO_IS_LOOP;
- }
-
- if (IS_MDT(ldd) || IS_MGS(ldd))
- strscat(wanted_mountopts, ",user_xattr", len);
-
- return 0;
-}
-
-int ldiskfs_fix_mountopts(struct mkfs_opts *mop, char *mountopts, size_t len)
-{
- if (strstr(mountopts, "errors=") == NULL)
- strscat(mountopts, ",errors=remount-ro", len);
-
- return 0;
-}
-
-static int read_file(const char *path, char *buf, int size)
-{
- FILE *fd;
-
- fd = fopen(path, "r");
- if (fd == NULL)
- return errno;
-
- if (fgets(buf, size, fd) == NULL) {
- fprintf(stderr, "reading from %s: %s", path, strerror(errno));
- fclose(fd);
- return 1;
- }
- fclose(fd);
-
- /* strip trailing newline */
- size = strlen(buf);
- if (buf[size - 1] == '\n')
- buf[size - 1] = '\0';
-
- return 0;
-}
-
-static int write_file(const char *path, const char *buf)
-{
- int fd, rc;
-
- fd = open(path, O_WRONLY);
- if (fd < 0)
- return errno;
-
- rc = write(fd, buf, strlen(buf));
- close(fd);
-
- return rc < 0 ? errno : 0;
-}
-
-static int set_blockdev_scheduler(const char *path, const char *scheduler)
-{
- char buf[PATH_MAX], *s, *e, orig_sched[50];
- int rc;
-
- /* Before setting the scheduler, we need to check to see if it's
- * already set to "noop". If it is, we don't want to override
- * that setting. If it's set to anything other than "noop", set
- * the scheduler to what has been passed in. */
-
- rc = read_file(path, buf, sizeof(buf));
- if (rc) {
- if (verbose)
- fprintf(stderr, "%s: cannot open '%s': %s\n",
- progname, path, strerror(errno));
- return rc;
- }
-
- /* The expected format of buf: noop anticipatory deadline [cfq] */
- s = strchr(buf, '[');
- e = strchr(buf, ']');
-
- /* If the format is not what we expect. Play it safe and error out. */
- if (s == NULL || e == NULL) {
- if (verbose)
- fprintf(stderr, "%s: cannot parse scheduler "
- "options for '%s'\n", progname, path);
- return -EINVAL;
- }
-
- snprintf(orig_sched, e - s, "%s", s + 1);
-
- if (strcmp(orig_sched, "noop") == 0 ||
- strcmp(orig_sched, scheduler) == 0)
- return 0;
-
- rc = write_file(path, scheduler);
- if (rc) {
- if (verbose)
- fprintf(stderr, "%s: cannot set scheduler on "
- "'%s': %s\n", progname, path,
- strerror(errno));
- return rc;
- } else {
- fprintf(stderr, "%s: change scheduler of %s from %s to %s\n",
- progname, path, orig_sched, scheduler);
- }
-
- return rc;
-}
-
-/* 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 */
-static int set_blockdev_tunables(char *source, struct mount_opts *mop)
-{
- glob_t glob_info = { 0 };
- struct stat stat_buf;
- char *chk_major, *chk_minor;
- char *savept = NULL, *dev;
- char *ret_path;
- char buf[PATH_MAX] = {'\0'}, path[PATH_MAX] = {'\0'};
- char real_path[PATH_MAX] = {'\0'};
- int i, rc = 0;
- int major, minor;
- char *slave = NULL;
-
- if (!source)
- return -EINVAL;
-
- ret_path = realpath(source, real_path);
- if (ret_path == NULL) {
- if (verbose)
- fprintf(stderr, "warning: %s: cannot resolve: %s\n",
- source, strerror(errno));
- return -EINVAL;
- }
-
- if (strncmp(real_path, "/dev/loop", 9) == 0)
- return 0;
-
- if ((real_path[0] != '/') && (strpbrk(real_path, ",:") != NULL))
- return 0;
-
- snprintf(path, sizeof(path), "/sys/block%s", real_path + 4);
- if (access(path, X_OK) == 0)
- goto set_params;
-
- /* The name of the device say 'X' specified in /dev/X may not
- * 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 */
-
- /* 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", 7) == 0 && dev[0] == 'p')
- *dev = 0;
- }
-
- rc = stat(real_path, &stat_buf);
- if (rc) {
- if (verbose)
- fprintf(stderr, "warning: %s, device %s stat failed\n",
- strerror(errno), real_path);
- return rc;
- }
-
- major = major(stat_buf.st_rdev);
- minor = minor(stat_buf.st_rdev);
- rc = glob("/sys/block/*", GLOB_NOSORT, NULL, &glob_info);
- if (rc) {
- if (verbose)
- fprintf(stderr, "warning: failed to read entries under "
- "/sys/block\n");
- globfree(&glob_info);
- return rc;
- }
-
- for (i = 0; i < glob_info.gl_pathc; i++){
- snprintf(path, sizeof(path), "%s/dev", glob_info.gl_pathv[i]);
-
- rc = read_file(path, buf, sizeof(buf));
- if (rc)
- continue;
-
- if (buf[strlen(buf) - 1] == '\n')
- buf[strlen(buf) - 1] = '\0';
-
- chk_major = strtok_r(buf, ":", &savept);
- chk_minor = savept;
- if (chk_major != NULL && major == atoi(chk_major) &&
- chk_minor != NULL && minor == atoi(chk_minor))
- break;
- }
-
- if (i == glob_info.gl_pathc) {
- if (verbose)
- fprintf(stderr,"warning: device %s does not match any "
- "entry under /sys/block\n", real_path);
- globfree(&glob_info);
- return -EINVAL;
- }
-
- /* Chop off "/dev" from path we found */
- path[strlen(glob_info.gl_pathv[i])] = '\0';
- globfree(&glob_info);
-
-set_params:
- if (strncmp(real_path, "/dev/md", 7) == 0) {
- snprintf(real_path, sizeof(real_path), "%s/%s", path,
- STRIPE_CACHE_SIZE);
-
- rc = read_file(real_path, buf, sizeof(buf));
- if (rc) {
- if (verbose)
- fprintf(stderr, "warning: opening %s: %s\n",
- real_path, strerror(errno));
- return 0;
- }
-
- if (atoi(buf) >= mop->mo_md_stripe_cache_size)
- return 0;
-
- if (strlen(buf) - 1 > 0) {
- snprintf(buf, sizeof(buf), "%d",
- mop->mo_md_stripe_cache_size);
- rc = write_file(real_path, buf);
- if (rc != 0 && verbose)
- fprintf(stderr, "warning: opening %s: %s\n",
- real_path, strerror(errno));
- }
- /* Return since raid and disk tunables are different */
- return rc;
- }
-
- if (mop->mo_max_sectors_kb >= 0) {
- snprintf(buf, sizeof(buf), "%d", mop->mo_max_sectors_kb);
- } else {
- snprintf(real_path, sizeof(real_path), "%s/%s", path,
- MAX_HW_SECTORS_KB_PATH);
- rc = read_file(real_path, buf, sizeof(buf));
- if (rc) {
- if (verbose)
- fprintf(stderr, "warning: opening %s: %s\n",
- real_path, strerror(errno));
- /* No MAX_HW_SECTORS_KB_PATH isn't necessary an
- * error for some device. */
- goto subdevs;
- }
- }
-
- if (strlen(buf) - 1 > 0) {
- char oldbuf[32] = "", *end = NULL;
- unsigned long long oldval, newval;
-
- snprintf(real_path, sizeof(real_path), "%s/%s", path,
- MAX_SECTORS_KB_PATH);
- rc = read_file(real_path, oldbuf, sizeof(oldbuf));
- /* Only set new parameter if different from the old one. */
- if (rc != 0 || strcmp(oldbuf, buf) == 0) {
- /* No MAX_SECTORS_KB_PATH isn't necessary an
- * error for some device. */
- goto subdevs;
- }
-
- newval = strtoull(buf, &end, 0);
- if (newval == 0 || newval == ULLONG_MAX || end == buf)
- goto subdevs;
-
- /* Don't increase IO request size limit past 16MB. It is about
- * PTLRPC_MAX_BRW_SIZE, but that isn't in a public header.
- * Note that even though the block layer allows larger values,
- * setting max_sectors_kb = 32768 causes crashes (LU-6974). */
- if (mop->mo_max_sectors_kb < 0 && newval > 16 * 1024) {
- newval = 16 * 1024;
- snprintf(buf, sizeof(buf), "%llu", newval);
- }
-
- oldval = strtoull(oldbuf, &end, 0);
- /* Don't shrink the current limit. */
- if (mop->mo_max_sectors_kb < 0 && oldval != ULLONG_MAX &&
- newval <= oldval)
- goto subdevs;
-
- rc = write_file(real_path, buf);
- if (rc != 0) {
- 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. */
- goto subdevs;
- }
- fprintf(stderr, "%s: increased %s from %s to %s\n",
- progname, real_path, oldbuf, buf);
- }
-
-subdevs:
- /* Purposely ignore errors reported from set_blockdev_scheduler.
- * The worst that will happen is a block device with an "incorrect"
- * scheduler. */
- snprintf(real_path, sizeof(real_path), "%s/%s", path, SCHEDULER_PATH);
- set_blockdev_scheduler(real_path, DEFAULT_SCHEDULER);
-
- /* if device is multipath device, tune its slave devices */
- glob_info.gl_pathc = 0;
- glob_info.gl_offs = 0;
- 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, mop);
- }
-
- 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 ldiskfs_tune_lustre(char *dev, struct mount_opts *mop)
-{
- return set_blockdev_tunables(dev, mop);
-}
-
-int ldiskfs_label_lustre(struct mount_opts *mop)
-{
- char label_cmd[PATH_MAX];
- int rc;
-
- snprintf(label_cmd, sizeof(label_cmd),
- TUNE2FS" -f -L '%s' '%s' >/dev/null 2>&1",
- mop->mo_ldd.ldd_svname, mop->mo_source);
- rc = run_command(label_cmd, sizeof(label_cmd));
-
- return rc;
-}
-
-int ldiskfs_rename_fsname(struct mkfs_opts *mop, const char *oldname)
-{
- struct mount_opts opts;
- struct lustre_disk_data *ldd = &mop->mo_ldd;
- char mntpt[] = "/tmp/mntXXXXXX";
- char *dev;
- int ret;
-
- /* Change the filesystem label. */
- opts.mo_ldd = *ldd;
- opts.mo_source = mop->mo_device;
- ret = ldiskfs_label_lustre(&opts);
- if (ret) {
- if (errno != 0)
- ret = errno;
- fprintf(stderr, "Can't change filesystem label: %s\n",
- strerror(ret));
- return ret;
- }
-
- /* Mount this device temporarily in order to write these files */
- if (mkdtemp(mntpt) == NULL) {
- if (errno != 0)
- ret = errno;
- else
- ret = EINVAL;
- fprintf(stderr, "Can't create temp mount point %s: %s\n",
- mntpt, strerror(ret));
- return ret;
- }
-
-#ifdef HAVE_SELINUX
- /*
- * Append file context to mount options if SE Linux is enabled
- */
- if (is_selinux_enabled() > 0)
- append_context_for_mount(mntpt, mop);
-#endif
-
- if (mop->mo_flags & MO_IS_LOOP)
- dev = mop->mo_loopdev;
- else
- dev = mop->mo_device;
- ret = mount(dev, mntpt, MT_STR(ldd), 0, ldd->ldd_mount_opts);
- if (ret) {
- if (errno != 0)
- ret = errno;
- fprintf(stderr, "Unable to mount %s: %s\n",
- dev, strerror(ret));
- if (ret == ENODEV)
- fprintf(stderr, "Is the %s module available?\n",
- MT_STR(ldd));
- goto out_rmdir;
- }
-
- ret = lustre_rename_fsname(mop, mntpt, oldname);
- umount(mntpt);
-
-out_rmdir:
- rmdir(mntpt);
- return ret;
-}
-
-/* Enable quota accounting */
-int ldiskfs_enable_quota(struct mkfs_opts *mop)
-{
- char *dev;
- char cmd[512];
- int cmdsz = sizeof(cmd), ret;
-
- if (is_e2fsprogs_feature_supp("-O quota") != 0) {
- fprintf(stderr, "%s: \"-O quota\" is is not supported by "
- "current e2fsprogs\n", progname);
- return EINVAL;
- }
-
- dev = mop->mo_device;
- if (mop->mo_flags & MO_IS_LOOP)
- dev = mop->mo_loopdev;
-
- /* Quota feature is already enabled? */
- if (is_feature_enabled("quota", dev)) {
- vprint("Quota feature is already enabled.\n");
- return 0;
- }
-
- /* Turn on quota feature by "tune2fs -O quota" */
- snprintf(cmd, cmdsz, "%s -O quota %s", TUNE2FS, dev);
- ret = run_command(cmd, cmdsz);
- if (ret)
- fprintf(stderr, "command:%s (%d)", cmd, ret);
-
- return ret;
-}
-
-int ldiskfs_init(void)
-{
- /* Required because full path to DEBUGFS is not specified */
- setenv("PATH", "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin", 0);
-
- return 0;
-}
-
-void ldiskfs_fini(void)
-{
- return;
-}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff