* GPL HEADER END
*/
/*
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2016, Intel Corporation.
* Use is subject to license terms.
- *
*/
/*
* Author: Brian Behlendorf <behlendorf1@llnl.gov>
*/
#include "mount_utils.h"
+#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <libzfs.h>
-#include <dlfcn.h>
+
+#define HOSTID_PATH "/etc/hostid"
/* Persistent mount data is stored in these user attributes */
#define LDD_PREFIX "lustre:"
static libzfs_handle_t *g_zfs;
-/* dynamic linking handles for libzfs & libnvpair */
-static void *handle_libzfs;
-static void *handle_nvpair;
-
-/* symbol table looked up with dlsym */
-struct zfs_symbols {
- libzfs_handle_t *(*libzfs_init)(void);
- void (*libzfs_fini)(libzfs_handle_t *);
- int (*libzfs_load_module)(char *);
- zfs_handle_t* (*zfs_open)(libzfs_handle_t *, const char *, int);
- int (*zfs_destroy)(zfs_handle_t *, boolean_t);
- void (*zfs_close)(zfs_handle_t *);
- int (*zfs_prop_set)(zfs_handle_t*, const char*, const char*);
- nvlist_t* (*zfs_get_user_props) (zfs_handle_t *);
- int (*zfs_name_valid)(const char *, zfs_type_t);
- zpool_handle_t* (*zpool_open)(libzfs_handle_t *, const char *);
- void (*zpool_close)(zpool_handle_t *zhp);
- int (*nvlist_lookup_string)(nvlist_t*, const char*, char**);
- int (*nvlist_lookup_nvlist)(nvlist_t *, const char *, nvlist_t **);
- nvpair_t * (*nvlist_next_nvpair)(nvlist_t *, nvpair_t *);
- char * (*nvpair_name)(nvpair_t *);
-};
-
-static struct zfs_symbols sym;
void zfs_fini(void);
-#define DLSYM(handle, func) \
- do { \
- sym.func = (typeof(sym.func))dlsym(handle, #func); \
- } while(0)
-
-/* populate the symbol table after a successful call to dlopen() */
-static int zfs_populate_symbols(void)
-{
- char *error;
-
- dlerror(); /* Clear any existing error */
-
- DLSYM(handle_libzfs, libzfs_init);
-#define libzfs_init (*sym.libzfs_init)
- DLSYM(handle_libzfs, libzfs_fini);
-#define libzfs_fini (*sym.libzfs_fini)
- DLSYM(handle_libzfs, libzfs_load_module);
-#define libzfs_load_module (*sym.libzfs_load_module)
- DLSYM(handle_libzfs, zfs_open);
-#define zfs_open (*sym.zfs_open)
- DLSYM(handle_libzfs, zfs_destroy);
-#define zfs_destroy (*sym.zfs_destroy)
- DLSYM(handle_libzfs, zfs_close);
-#define zfs_close (*sym.zfs_close)
- DLSYM(handle_libzfs, zfs_prop_set);
-#define zfs_prop_set (*sym.zfs_prop_set)
- DLSYM(handle_libzfs, zfs_get_user_props);
-#define zfs_get_user_props (*sym.zfs_get_user_props)
- DLSYM(handle_libzfs, zfs_name_valid);
-#define zfs_name_valid (*sym.zfs_name_valid)
- DLSYM(handle_libzfs, zpool_open);
-#define zpool_open (*sym.zpool_open)
- DLSYM(handle_libzfs, zpool_close);
-#define zpool_close (*sym.zpool_close)
- DLSYM(handle_nvpair, nvlist_lookup_string);
-#define nvlist_lookup_string (*sym.nvlist_lookup_string)
- DLSYM(handle_nvpair, nvlist_lookup_nvlist);
-#define nvlist_lookup_nvlist (*sym.nvlist_lookup_nvlist)
- DLSYM(handle_nvpair, nvlist_next_nvpair);
-#define nvlist_next_nvpair (*sym.nvlist_next_nvpair)
- DLSYM(handle_nvpair, nvpair_name);
-#define nvpair_name (*sym.nvpair_name)
-
- error = dlerror();
- if (error != NULL) {
- fatal();
- fprintf(stderr, "%s\n", error);
- return EINVAL;
- }
- return 0;
-}
-
static int zfs_set_prop_int(zfs_handle_t *zhp, char *prop, void *val)
{
char str[64];
{
char *params_dup, *token, *key, *value;
char *save_token = NULL;
- char prop_name[ZFS_MAXNAMELEN];
+ char prop_name[ZFS_MAXPROPLEN];
int ret = 0;
params_dup = strdup(params);
return ret;
}
+static int zfs_check_hostid(struct mkfs_opts *mop)
+{
+ FILE *f;
+ unsigned long hostid;
+ int rc;
+
+ if (strstr(mop->mo_ldd.ldd_params, PARAM_FAILNODE) == NULL)
+ return 0;
+
+ f = fopen("/sys/module/spl/parameters/spl_hostid", "r");
+ if (f == NULL) {
+ fatal();
+ fprintf(stderr, "Failed to open spl_hostid: %s\n",
+ strerror(errno));
+ return errno;
+ }
+ rc = fscanf(f, "%li", &hostid);
+ fclose(f);
+ if (rc != 1) {
+ fatal();
+ fprintf(stderr, "Failed to read spl_hostid: %d\n", rc);
+ return rc;
+ }
+
+ if (hostid != 0)
+ return 0;
+
+ f = fopen(HOSTID_PATH, "r");
+ if (f == NULL)
+ goto out;
+
+ rc = fread(&hostid, sizeof(uint32_t), 1, f);
+ fclose(f);
+
+ if (rc != 1) {
+ fprintf(stderr, "Failed to read "HOSTID_PATH": %d\n",
+ rc);
+ hostid = 0;
+ }
+
+out:
+ if (hostid == 0) {
+ if (mop->mo_flags & MO_NOHOSTID_CHECK) {
+ fprintf(stderr, "WARNING: spl_hostid not set. ZFS has "
+ "no zpool import protection\n");
+ } else {
+ fatal();
+ fprintf(stderr, "spl_hostid not set. See %s(8)",
+ progname);
+ return EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static int osd_check_zfs_setup(void)
{
if (osd_zfs_setup == 0) {
int i, ret = EINVAL;
if (osd_check_zfs_setup() == 0)
- return EINVAL;
+ goto out;
zhp = zfs_open(g_zfs, ds, ZFS_TYPE_FILESYSTEM);
if (zhp == NULL) {
goto out;
}
+ ret = zfs_check_hostid(mop);
+ if (ret != 0)
+ goto out;
+
vprint("Writing %s properties\n", ds);
for (i = 0; special_ldd_prop_params[i].zlpb_prop_name != NULL; i++) {
{
nvlist_t *props;
nvpair_t *nvp;
- char key[ZFS_MAXNAMELEN];
+ char key[ZFS_MAXPROPLEN];
char *value;
int ret = 0;
return EINVAL;
}
+ ret = zfs_check_hostid(mop);
+ if (ret != 0)
+ goto out;
+
pool = strdup(ds);
if (pool == NULL)
return ENOMEM;
/*
* Create the ZFS filesystem with any required mkfs options:
* - canmount=off is set to prevent zfs automounting
- * - version=4 is set because SA are not yet handled by the osd
+ * - xattr=sa is set to use system attribute based xattrs
*/
memset(mkfs_cmd, 0, PATH_MAX);
snprintf(mkfs_cmd, PATH_MAX,
"zfs create -o canmount=off -o xattr=sa%s %s",
- zfs_mkfs_opts(mop, mkfs_tmp, PATH_MAX),
- ds);
+ zfs_mkfs_opts(mop, mkfs_tmp, PATH_MAX), ds);
vprint("mkfs_cmd = %s\n", mkfs_cmd);
ret = run_command(mkfs_cmd, PATH_MAX);
return ret;
}
+int zfs_enable_quota(struct mkfs_opts *mop)
+{
+ fprintf(stderr, "this option is not only valid for zfs\n");
+ return ENOSYS;
+}
+
int zfs_prepare_lustre(struct mkfs_opts *mop,
- char *default_mountopts, int default_len,
- char *always_mountopts, int always_len)
+ char *wanted_mountopts, size_t len)
{
if (osd_check_zfs_setup() == 0)
return EINVAL;
{
int ret = 0;
- /* If the ZFS libs are not installed, don't print an error to avoid
- * spamming ldiskfs users. An error message will still be printed if
- * someone tries to do some real work involving a ZFS backend */
+ g_zfs = libzfs_init();
+ if (g_zfs == NULL) {
+ /* Try to load zfs.ko and retry libzfs_init() */
- handle_libzfs = dlopen("libzfs.so.1", RTLD_LAZY);
- if (handle_libzfs == NULL)
- return EINVAL;
+ ret = system("/sbin/modprobe -q zfs");
- handle_nvpair = dlopen("libnvpair.so.1", RTLD_LAZY);
- if (handle_nvpair == NULL) {
- ret = EINVAL;
- goto out;
+ if (ret == 0) {
+ g_zfs = libzfs_init();
+ if (g_zfs == NULL)
+ ret = EINVAL;
+ }
}
- ret = zfs_populate_symbols();
- if (ret)
- goto out;
+ if (ret == 0)
+ osd_zfs_setup = 1;
- if (libzfs_load_module("zfs") != 0) {
- /* The ZFS modules are not installed */
- ret = EINVAL;
- goto out;
- }
+ else
+ fprintf(stderr, "Failed to initialize ZFS library: %d\n", ret);
- g_zfs = libzfs_init();
- if (g_zfs == NULL) {
- fprintf(stderr, "Failed to initialize ZFS library\n");
- ret = EINVAL;
- }
-out:
- osd_zfs_setup = 1;
- if (ret)
- zfs_fini();
return ret;
}
libzfs_fini(g_zfs);
g_zfs = NULL;
}
- if (handle_nvpair) {
- dlclose(handle_nvpair);
- handle_nvpair = NULL;
- }
- if (handle_libzfs) {
- dlclose(handle_libzfs);
- handle_libzfs = NULL;
- }
-
osd_zfs_setup = 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff