uint_t count = ztip->zti_count;
spa_taskqs_t *tqs = &spa->spa_zio_taskq[t][q];
char name[32];
- uint_t i, flags = TASKQ_DYNAMIC;
+ uint_t i, flags = 0;
boolean_t batch = B_FALSE;
if (mode == ZTI_MODE_NULL) {
case ZTI_MODE_FIXED:
ASSERT3U(value, >=, 1);
value = MAX(value, 1);
+ flags |= TASKQ_DYNAMIC;
break;
case ZTI_MODE_BATCH:
return (0);
}
-#ifdef _KERNEL
-/*
- * Get the root pool information from the root disk, then import the root pool
- * during the system boot up time.
- */
-extern int vdev_disk_read_rootlabel(char *, char *, nvlist_t **);
-
-static nvlist_t *
-spa_generate_rootconf(char *devpath, char *devid, uint64_t *guid)
-{
- nvlist_t *config;
- nvlist_t *nvtop, *nvroot;
- uint64_t pgid;
-
- if (vdev_disk_read_rootlabel(devpath, devid, &config) != 0)
- return (NULL);
-
- /*
- * Add this top-level vdev to the child array.
- */
- VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
- &nvtop) == 0);
- VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID,
- &pgid) == 0);
- VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, guid) == 0);
-
- /*
- * Put this pool's top-level vdevs into a root vdev.
- */
- VERIFY(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, KM_SLEEP) == 0);
- VERIFY(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE,
- VDEV_TYPE_ROOT) == 0);
- VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_ID, 0ULL) == 0);
- VERIFY(nvlist_add_uint64(nvroot, ZPOOL_CONFIG_GUID, pgid) == 0);
- VERIFY(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN,
- &nvtop, 1) == 0);
-
- /*
- * Replace the existing vdev_tree with the new root vdev in
- * this pool's configuration (remove the old, add the new).
- */
- VERIFY(nvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot) == 0);
- nvlist_free(nvroot);
- return (config);
-}
-
-/*
- * Walk the vdev tree and see if we can find a device with "better"
- * configuration. A configuration is "better" if the label on that
- * device has a more recent txg.
- */
-static void
-spa_alt_rootvdev(vdev_t *vd, vdev_t **avd, uint64_t *txg)
-{
- int c;
-
- for (c = 0; c < vd->vdev_children; c++)
- spa_alt_rootvdev(vd->vdev_child[c], avd, txg);
-
- if (vd->vdev_ops->vdev_op_leaf) {
- nvlist_t *label;
- uint64_t label_txg;
-
- if (vdev_disk_read_rootlabel(vd->vdev_physpath, vd->vdev_devid,
- &label) != 0)
- return;
-
- VERIFY(nvlist_lookup_uint64(label, ZPOOL_CONFIG_POOL_TXG,
- &label_txg) == 0);
-
- /*
- * Do we have a better boot device?
- */
- if (label_txg > *txg) {
- *txg = label_txg;
- *avd = vd;
- }
- nvlist_free(label);
- }
-}
-
-/*
- * Import a root pool.
- *
- * For x86. devpath_list will consist of devid and/or physpath name of
- * the vdev (e.g. "id1,sd@SSEAGATE..." or "/pci@1f,0/ide@d/disk@0,0:a").
- * The GRUB "findroot" command will return the vdev we should boot.
- *
- * For Sparc, devpath_list consists the physpath name of the booting device
- * no matter the rootpool is a single device pool or a mirrored pool.
- * e.g.
- * "/pci@1f,0/ide@d/disk@0,0:a"
- */
-int
-spa_import_rootpool(char *devpath, char *devid)
-{
- spa_t *spa;
- vdev_t *rvd, *bvd, *avd = NULL;
- nvlist_t *config, *nvtop;
- uint64_t guid, txg;
- char *pname;
- int error;
-
- /*
- * Read the label from the boot device and generate a configuration.
- */
- config = spa_generate_rootconf(devpath, devid, &guid);
-#if defined(_OBP) && defined(_KERNEL)
- if (config == NULL) {
- if (strstr(devpath, "/iscsi/ssd") != NULL) {
- /* iscsi boot */
- get_iscsi_bootpath_phy(devpath);
- config = spa_generate_rootconf(devpath, devid, &guid);
- }
- }
-#endif
- if (config == NULL) {
- cmn_err(CE_NOTE, "Cannot read the pool label from '%s'",
- devpath);
- return (SET_ERROR(EIO));
- }
-
- VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME,
- &pname) == 0);
- VERIFY(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG, &txg) == 0);
-
- mutex_enter(&spa_namespace_lock);
- if ((spa = spa_lookup(pname)) != NULL) {
- /*
- * Remove the existing root pool from the namespace so that we
- * can replace it with the correct config we just read in.
- */
- spa_remove(spa);
- }
-
- spa = spa_add(pname, config, NULL);
- spa->spa_is_root = B_TRUE;
- spa->spa_import_flags = ZFS_IMPORT_VERBATIM;
-
- /*
- * Build up a vdev tree based on the boot device's label config.
- */
- VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE,
- &nvtop) == 0);
- spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
- error = spa_config_parse(spa, &rvd, nvtop, NULL, 0,
- VDEV_ALLOC_ROOTPOOL);
- spa_config_exit(spa, SCL_ALL, FTAG);
- if (error) {
- mutex_exit(&spa_namespace_lock);
- nvlist_free(config);
- cmn_err(CE_NOTE, "Can not parse the config for pool '%s'",
- pname);
- return (error);
- }
-
- /*
- * Get the boot vdev.
- */
- if ((bvd = vdev_lookup_by_guid(rvd, guid)) == NULL) {
- cmn_err(CE_NOTE, "Can not find the boot vdev for guid %llu",
- (u_longlong_t)guid);
- error = SET_ERROR(ENOENT);
- goto out;
- }
-
- /*
- * Determine if there is a better boot device.
- */
- avd = bvd;
- spa_alt_rootvdev(rvd, &avd, &txg);
- if (avd != bvd) {
- cmn_err(CE_NOTE, "The boot device is 'degraded'. Please "
- "try booting from '%s'", avd->vdev_path);
- error = SET_ERROR(EINVAL);
- goto out;
- }
-
- /*
- * If the boot device is part of a spare vdev then ensure that
- * we're booting off the active spare.
- */
- if (bvd->vdev_parent->vdev_ops == &vdev_spare_ops &&
- !bvd->vdev_isspare) {
- cmn_err(CE_NOTE, "The boot device is currently spared. Please "
- "try booting from '%s'",
- bvd->vdev_parent->
- vdev_child[bvd->vdev_parent->vdev_children - 1]->vdev_path);
- error = SET_ERROR(EINVAL);
- goto out;
- }
-
- error = 0;
-out:
- spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
- vdev_free(rvd);
- spa_config_exit(spa, SCL_ALL, FTAG);
- mutex_exit(&spa_namespace_lock);
-
- nvlist_free(config);
- return (error);
-}
-
-#endif
-
/*
* Import a non-root pool into the system.
*/
EXPORT_SYMBOL(spa_open_rewind);
EXPORT_SYMBOL(spa_get_stats);
EXPORT_SYMBOL(spa_create);
-EXPORT_SYMBOL(spa_import_rootpool);
EXPORT_SYMBOL(spa_import);
EXPORT_SYMBOL(spa_tryimport);
EXPORT_SYMBOL(spa_destroy);
projects / mirror_zfs-debian.git / blobdiff