*/
/*
- * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/spa.h>
#include <sys/utsname.h>
#include <sys/systeminfo.h>
#include <sys/sunddi.h>
+#include <sys/zfeature.h>
#ifdef _KERNEL
#include <sys/kobj.h>
#include <sys/zone.h>
* This can be overridden in userland to preserve an alternate namespace for
* userland pools when doing testing.
*/
-const char *spa_config_path = ZPOOL_CACHE;
+char *spa_config_path = ZPOOL_CACHE;
+int zfs_autoimport_disable = 0;
/*
* Called when the module is first loaded, this routine loads the configuration
void *buf = NULL;
nvlist_t *nvlist, *child;
nvpair_t *nvpair;
- spa_t *spa;
char *pathname;
struct _buf *file;
uint64_t fsize;
+ if (zfs_autoimport_disable)
+ return;
+
/*
* Open the configuration file.
*/
- pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP);
+ pathname = kmem_alloc(MAXPATHLEN, KM_PUSHPAGE);
(void) snprintf(pathname, MAXPATHLEN, "%s%s",
(rootdir != NULL) ? "./" : "", spa_config_path);
if (kobj_get_filesize(file, &fsize) != 0)
goto out;
- buf = kmem_alloc(fsize, KM_SLEEP);
+ buf = kmem_alloc(fsize, KM_PUSHPAGE | KM_NODEBUG);
/*
* Read the nvlist from the file.
/*
* Unpack the nvlist.
*/
- if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0)
+ if (nvlist_unpack(buf, fsize, &nvlist, KM_PUSHPAGE) != 0)
goto out;
/*
mutex_enter(&spa_namespace_lock);
nvpair = NULL;
while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) {
-
if (nvpair_type(nvpair) != DATA_TYPE_NVLIST)
continue;
if (spa_lookup(nvpair_name(nvpair)) != NULL)
continue;
- spa = spa_add(nvpair_name(nvpair), NULL);
-
- /*
- * We blindly duplicate the configuration here. If it's
- * invalid, we will catch it when the pool is first opened.
- */
- VERIFY(nvlist_dup(child, &spa->spa_config, 0) == 0);
+ (void) spa_add(nvpair_name(nvpair), child, NULL);
}
mutex_exit(&spa_namespace_lock);
*/
VERIFY(nvlist_size(nvl, &buflen, NV_ENCODE_XDR) == 0);
- buf = kmem_alloc(buflen, KM_SLEEP);
- temp = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
+ buf = kmem_alloc(buflen, KM_PUSHPAGE | KM_NODEBUG);
+ temp = kmem_zalloc(MAXPATHLEN, KM_PUSHPAGE);
VERIFY(nvlist_pack(nvl, &buf, &buflen, NV_ENCODE_XDR,
- KM_SLEEP) == 0);
+ KM_PUSHPAGE) == 0);
/*
* Write the configuration to disk. We need to do the traditional
(void) vn_rename(temp, dp->scd_path, UIO_SYSSPACE);
}
(void) VOP_CLOSE(vp, oflags, 1, 0, kcred, NULL);
- VN_RELE(vp);
}
(void) vn_remove(temp, UIO_SYSSPACE, RMFILE);
*/
nvl = NULL;
while ((spa = spa_next(spa)) != NULL) {
- if (spa == target && removing)
+ /*
+ * Skip over our own pool if we're about to remove
+ * ourselves from the spa namespace or any pool that
+ * is readonly. Since we cannot guarantee that a
+ * readonly pool would successfully import upon reboot,
+ * we don't allow them to be written to the cache file.
+ */
+ if ((spa == target && removing) ||
+ !spa_writeable(spa))
continue;
mutex_enter(&spa->spa_props_lock);
if (nvl == NULL)
VERIFY(nvlist_alloc(&nvl, NV_UNIQUE_NAME,
- KM_SLEEP) == 0);
+ KM_PUSHPAGE) == 0);
VERIFY(nvlist_add_nvlist(nvl, spa->spa_name,
spa->spa_config) == 0);
spa_config_generation++;
if (postsysevent)
- spa_event_notify(target, NULL, ESC_ZFS_CONFIG_SYNC);
+ spa_event_notify(target, NULL, FM_EREPORT_ZFS_CONFIG_SYNC);
}
/*
if (*generation == spa_config_generation)
return (NULL);
- VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ VERIFY(nvlist_alloc(&pools, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0);
mutex_enter(&spa_namespace_lock);
while ((spa = spa_next(spa)) != NULL) {
vdev_t *rvd = spa->spa_root_vdev;
unsigned long hostid = 0;
boolean_t locked = B_FALSE;
+ uint64_t split_guid;
if (vd == NULL) {
vd = rvd;
if (txg == -1ULL)
txg = spa->spa_config_txg;
- VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ VERIFY(nvlist_alloc(&config, NV_UNIQUE_NAME, KM_PUSHPAGE) == 0);
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VERSION,
spa_version(spa)) == 0);
txg) == 0);
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID,
spa_guid(spa)) == 0);
+ VERIFY(spa->spa_comment == NULL || nvlist_add_string(config,
+ ZPOOL_CONFIG_COMMENT, spa->spa_comment) == 0);
+
+
#ifdef _KERNEL
hostid = zone_get_hostid(NULL);
#else /* _KERNEL */
VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_IS_LOG,
1ULL) == 0);
vd = vd->vdev_top; /* label contains top config */
+ } else {
+ /*
+ * Only add the (potentially large) split information
+ * in the mos config, and not in the vdev labels
+ */
+ if (spa->spa_config_splitting != NULL)
+ VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_SPLIT,
+ spa->spa_config_splitting) == 0);
}
- nvroot = vdev_config_generate(spa, vd, getstats, B_FALSE, B_FALSE);
+ /*
+ * Add the top-level config. We even add this on pools which
+ * don't support holes in the namespace.
+ */
+ vdev_top_config_generate(spa, config);
+
+ /*
+ * If we're splitting, record the original pool's guid.
+ */
+ if (spa->spa_config_splitting != NULL &&
+ nvlist_lookup_uint64(spa->spa_config_splitting,
+ ZPOOL_CONFIG_SPLIT_GUID, &split_guid) == 0) {
+ VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_SPLIT_GUID,
+ split_guid) == 0);
+ }
+
+ nvroot = vdev_config_generate(spa, vd, getstats, 0);
VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0);
nvlist_free(nvroot);
+ /*
+ * Store what's necessary for reading the MOS in the label.
+ */
+ VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURES_FOR_READ,
+ spa->spa_label_features) == 0);
+
+ if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) {
+ ddt_histogram_t *ddh;
+ ddt_stat_t *dds;
+ ddt_object_t *ddo;
+
+ ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_PUSHPAGE);
+ ddt_get_dedup_histogram(spa, ddh);
+ VERIFY(nvlist_add_uint64_array(config,
+ ZPOOL_CONFIG_DDT_HISTOGRAM,
+ (uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t)) == 0);
+ kmem_free(ddh, sizeof (ddt_histogram_t));
+
+ ddo = kmem_zalloc(sizeof (ddt_object_t), KM_PUSHPAGE);
+ ddt_get_dedup_object_stats(spa, ddo);
+ VERIFY(nvlist_add_uint64_array(config,
+ ZPOOL_CONFIG_DDT_OBJ_STATS,
+ (uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t)) == 0);
+ kmem_free(ddo, sizeof (ddt_object_t));
+
+ dds = kmem_zalloc(sizeof (ddt_stat_t), KM_PUSHPAGE);
+ ddt_get_dedup_stats(spa, dds);
+ VERIFY(nvlist_add_uint64_array(config,
+ ZPOOL_CONFIG_DDT_STATS,
+ (uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t)) == 0);
+ kmem_free(dds, sizeof (ddt_stat_t));
+ }
+
if (locked)
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
if (what == SPA_CONFIG_UPDATE_POOL)
spa_config_update(spa, SPA_CONFIG_UPDATE_VDEVS);
}
+
+#if defined(_KERNEL) && defined(HAVE_SPL)
+EXPORT_SYMBOL(spa_config_sync);
+EXPORT_SYMBOL(spa_config_load);
+EXPORT_SYMBOL(spa_all_configs);
+EXPORT_SYMBOL(spa_config_set);
+EXPORT_SYMBOL(spa_config_generate);
+EXPORT_SYMBOL(spa_config_update);
+
+module_param(spa_config_path, charp, 0444);
+MODULE_PARM_DESC(spa_config_path, "SPA config file (/etc/zfs/zpool.cache)");
+
+module_param(zfs_autoimport_disable, int, 0644);
+MODULE_PARM_DESC(zfs_autoimport_disable, "Disable pool import at module load");
+
+#endif
git://git.camperquake.de / zfs.git / blobdiff