diff options
Diffstat (limited to 'sys/contrib/openzfs/lib/libzpool/kernel.c')
| -rw-r--r-- | sys/contrib/openzfs/lib/libzpool/kernel.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/lib/libzpool/kernel.c b/sys/contrib/openzfs/lib/libzpool/kernel.c index e63153a03370..fea2f81458f9 100644 --- a/sys/contrib/openzfs/lib/libzpool/kernel.c +++ b/sys/contrib/openzfs/lib/libzpool/kernel.c @@ -38,6 +38,7 @@ #include <sys/processor.h> #include <sys/rrwlock.h> #include <sys/spa.h> +#include <sys/spa_impl.h> #include <sys/stat.h> #include <sys/systeminfo.h> #include <sys/time.h> @@ -811,6 +812,79 @@ umem_out_of_memory(void) return (0); } +static void +spa_config_load(void) +{ + void *buf = NULL; + nvlist_t *nvlist, *child; + nvpair_t *nvpair; + char *pathname; + zfs_file_t *fp; + zfs_file_attr_t zfa; + uint64_t fsize; + int err; + + /* + * Open the configuration file. + */ + pathname = kmem_alloc(MAXPATHLEN, KM_SLEEP); + + (void) snprintf(pathname, MAXPATHLEN, "%s", spa_config_path); + + err = zfs_file_open(pathname, O_RDONLY, 0, &fp); + if (err) + err = zfs_file_open(ZPOOL_CACHE_BOOT, O_RDONLY, 0, &fp); + + kmem_free(pathname, MAXPATHLEN); + + if (err) + return; + + if (zfs_file_getattr(fp, &zfa)) + goto out; + + fsize = zfa.zfa_size; + buf = kmem_alloc(fsize, KM_SLEEP); + + /* + * Read the nvlist from the file. + */ + if (zfs_file_read(fp, buf, fsize, NULL) < 0) + goto out; + + /* + * Unpack the nvlist. + */ + if (nvlist_unpack(buf, fsize, &nvlist, KM_SLEEP) != 0) + goto out; + + /* + * Iterate over all elements in the nvlist, creating a new spa_t for + * each one with the specified configuration. + */ + mutex_enter(&spa_namespace_lock); + nvpair = NULL; + while ((nvpair = nvlist_next_nvpair(nvlist, nvpair)) != NULL) { + if (nvpair_type(nvpair) != DATA_TYPE_NVLIST) + continue; + + child = fnvpair_value_nvlist(nvpair); + + if (spa_lookup(nvpair_name(nvpair)) != NULL) + continue; + (void) spa_add(nvpair_name(nvpair), child, NULL); + } + mutex_exit(&spa_namespace_lock); + + nvlist_free(nvlist); + +out: + if (buf != NULL) + kmem_free(buf, fsize); + + zfs_file_close(fp); +} + void kernel_init(int mode) { @@ -835,6 +909,7 @@ kernel_init(int mode) zstd_init(); spa_init((spa_mode_t)mode); + spa_config_load(); fletcher_4_init(); |