*
* CDDL HEADER END
*/
+
/*
- * 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 (c) 2012, 2018 by Delphix. All rights reserved.
+ * Copyright (c) 2012, 2016 by Delphix. All rights reserved.
+ * Copyright (c) 2017, Intel Corporation.
*/
/*
* 1. Uniquely identify this device as part of a ZFS pool and confirm its
* identity within the pool.
*
- * 2. Verify that all the devices given in a configuration are present
+ * 2. Verify that all the devices given in a configuration are present
* within the pool.
*
- * 3. Determine the uberblock for the pool.
+ * 3. Determine the uberblock for the pool.
*
- * 4. In case of an import operation, determine the configuration of the
+ * 4. In case of an import operation, determine the configuration of the
* toplevel vdev of which it is a part.
*
- * 5. If an import operation cannot find all the devices in the pool,
+ * 5. If an import operation cannot find all the devices in the pool,
* provide enough information to the administrator to determine which
* devices are missing.
*
* In order to identify which labels are valid, the labels are written in the
* following manner:
*
- * 1. For each vdev, update 'L1' to the new label
- * 2. Update the uberblock
- * 3. For each vdev, update 'L2' to the new label
+ * 1. For each vdev, update 'L1' to the new label
+ * 2. Update the uberblock
+ * 3. For each vdev, update 'L2' to the new label
*
* Given arbitrary failure, we can determine the correct label to use based on
* the transaction group. If we fail after updating L1 but before updating the
*
* The nvlist describing the pool and vdev contains the following elements:
*
- * version ZFS on-disk version
- * name Pool name
- * state Pool state
- * txg Transaction group in which this label was written
- * pool_guid Unique identifier for this pool
- * vdev_tree An nvlist describing vdev tree.
+ * version ZFS on-disk version
+ * name Pool name
+ * state Pool state
+ * txg Transaction group in which this label was written
+ * pool_guid Unique identifier for this pool
+ * vdev_tree An nvlist describing vdev tree.
+ * features_for_read
+ * An nvlist of the features necessary for reading the MOS.
*
* Each leaf device label also contains the following:
*
- * top_guid Unique ID for top-level vdev in which this is contained
- * guid Unique ID for the leaf vdev
+ * top_guid Unique ID for top-level vdev in which this is contained
+ * guid Unique ID for the leaf vdev
*
* The 'vs' configuration follows the format described in 'spa_config.c'.
*/
#include <sys/vdev_impl.h>
#include <sys/uberblock_impl.h>
#include <sys/metaslab.h>
+#include <sys/metaslab_impl.h>
#include <sys/zio.h>
+#include <sys/dsl_scan.h>
+#include <sys/abd.h>
#include <sys/fs/zfs.h>
/*
}
static void
-vdev_label_read(zio_t *zio, vdev_t *vd, int l, void *buf, uint64_t offset,
- uint64_t size, zio_done_func_t *done, void *private, int flags)
+vdev_label_read(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t offset,
+ uint64_t size, zio_done_func_t *done, void *private, int flags)
{
- ASSERT(spa_config_held(zio->io_spa, SCL_STATE_ALL, RW_WRITER) ==
- SCL_STATE_ALL);
+ ASSERT(
+ spa_config_held(zio->io_spa, SCL_STATE, RW_READER) == SCL_STATE ||
+ spa_config_held(zio->io_spa, SCL_STATE, RW_WRITER) == SCL_STATE);
ASSERT(flags & ZIO_FLAG_CONFIG_WRITER);
zio_nowait(zio_read_phys(zio, vd,
ZIO_PRIORITY_SYNC_READ, flags, B_TRUE));
}
-static void
-vdev_label_write(zio_t *zio, vdev_t *vd, int l, void *buf, uint64_t offset,
- uint64_t size, zio_done_func_t *done, void *private, int flags)
+void
+vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t offset,
+ uint64_t size, zio_done_func_t *done, void *private, int flags)
{
- ASSERT(spa_config_held(zio->io_spa, SCL_ALL, RW_WRITER) == SCL_ALL ||
- (spa_config_held(zio->io_spa, SCL_CONFIG | SCL_STATE, RW_READER) ==
- (SCL_CONFIG | SCL_STATE) &&
- dsl_pool_sync_context(spa_get_dsl(zio->io_spa))));
+ ASSERT(
+ spa_config_held(zio->io_spa, SCL_STATE, RW_READER) == SCL_STATE ||
+ spa_config_held(zio->io_spa, SCL_STATE, RW_WRITER) == SCL_STATE);
ASSERT(flags & ZIO_FLAG_CONFIG_WRITER);
zio_nowait(zio_write_phys(zio, vd,
ZIO_PRIORITY_SYNC_WRITE, flags, B_TRUE));
}
+/*
+ * Generate the nvlist representing this vdev's stats
+ */
+void
+vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv)
+{
+ nvlist_t *nvx;
+ vdev_stat_t *vs;
+ vdev_stat_ex_t *vsx;
+
+ vs = kmem_alloc(sizeof (*vs), KM_SLEEP);
+ vsx = kmem_alloc(sizeof (*vsx), KM_SLEEP);
+
+ vdev_get_stats_ex(vd, vs, vsx);
+ fnvlist_add_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS,
+ (uint64_t *)vs, sizeof (*vs) / sizeof (uint64_t));
+
+ /*
+ * Add extended stats into a special extended stats nvlist. This keeps
+ * all the extended stats nicely grouped together. The extended stats
+ * nvlist is then added to the main nvlist.
+ */
+ nvx = fnvlist_alloc();
+
+ /* ZIOs in flight to disk */
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SYNC_R_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_SYNC_READ]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SYNC_W_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_SYNC_WRITE]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_ASYNC_R_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_ASYNC_READ]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_ASYNC_W_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_ASYNC_WRITE]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SCRUB_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_SCRUB]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_TRIM_ACTIVE_QUEUE,
+ vsx->vsx_active_queue[ZIO_PRIORITY_TRIM]);
+
+ /* ZIOs pending */
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SYNC_R_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_SYNC_READ]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SYNC_W_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_SYNC_WRITE]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_ASYNC_R_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_ASYNC_READ]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_ASYNC_W_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_ASYNC_WRITE]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SCRUB_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_SCRUB]);
+
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_TRIM_PEND_QUEUE,
+ vsx->vsx_pend_queue[ZIO_PRIORITY_TRIM]);
+
+ /* Histograms */
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_TOT_R_LAT_HISTO,
+ vsx->vsx_total_histo[ZIO_TYPE_READ],
+ ARRAY_SIZE(vsx->vsx_total_histo[ZIO_TYPE_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_TOT_W_LAT_HISTO,
+ vsx->vsx_total_histo[ZIO_TYPE_WRITE],
+ ARRAY_SIZE(vsx->vsx_total_histo[ZIO_TYPE_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_DISK_R_LAT_HISTO,
+ vsx->vsx_disk_histo[ZIO_TYPE_READ],
+ ARRAY_SIZE(vsx->vsx_disk_histo[ZIO_TYPE_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_DISK_W_LAT_HISTO,
+ vsx->vsx_disk_histo[ZIO_TYPE_WRITE],
+ ARRAY_SIZE(vsx->vsx_disk_histo[ZIO_TYPE_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_R_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_SYNC_READ],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_SYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_W_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_SYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_SYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_R_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_ASYNC_READ],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_ASYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_W_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_ASYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_ASYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SCRUB_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_SCRUB],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_SCRUB]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_TRIM_LAT_HISTO,
+ vsx->vsx_queue_histo[ZIO_PRIORITY_TRIM],
+ ARRAY_SIZE(vsx->vsx_queue_histo[ZIO_PRIORITY_TRIM]));
+
+ /* Request sizes */
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_IND_R_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_SYNC_READ],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_SYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_IND_W_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_SYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_SYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_IND_R_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_ASYNC_READ],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_ASYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_IND_W_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_ASYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_ASYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_IND_SCRUB_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_SCRUB],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_SCRUB]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_IND_TRIM_HISTO,
+ vsx->vsx_ind_histo[ZIO_PRIORITY_TRIM],
+ ARRAY_SIZE(vsx->vsx_ind_histo[ZIO_PRIORITY_TRIM]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_AGG_R_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_SYNC_READ],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_SYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_SYNC_AGG_W_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_SYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_SYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_AGG_R_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_ASYNC_READ],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_ASYNC_READ]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_ASYNC_AGG_W_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_ASYNC_WRITE],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_ASYNC_WRITE]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_AGG_SCRUB_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_SCRUB],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_SCRUB]));
+
+ fnvlist_add_uint64_array(nvx, ZPOOL_CONFIG_VDEV_AGG_TRIM_HISTO,
+ vsx->vsx_agg_histo[ZIO_PRIORITY_TRIM],
+ ARRAY_SIZE(vsx->vsx_agg_histo[ZIO_PRIORITY_TRIM]));
+
+ /* IO delays */
+ fnvlist_add_uint64(nvx, ZPOOL_CONFIG_VDEV_SLOW_IOS, vs->vs_slow_ios);
+
+ /* Add extended stats nvlist to main nvlist */
+ fnvlist_add_nvlist(nv, ZPOOL_CONFIG_VDEV_STATS_EX, nvx);
+
+ fnvlist_free(nvx);
+ kmem_free(vs, sizeof (*vs));
+ kmem_free(vsx, sizeof (*vsx));
+}
+
+static void
+root_vdev_actions_getprogress(vdev_t *vd, nvlist_t *nvl)
+{
+ spa_t *spa = vd->vdev_spa;
+
+ if (vd != spa->spa_root_vdev)
+ return;
+
+ /* provide either current or previous scan information */
+ pool_scan_stat_t ps;
+ if (spa_scan_get_stats(spa, &ps) == 0) {
+ fnvlist_add_uint64_array(nvl,
+ ZPOOL_CONFIG_SCAN_STATS, (uint64_t *)&ps,
+ sizeof (pool_scan_stat_t) / sizeof (uint64_t));
+ }
+
+ pool_removal_stat_t prs;
+ if (spa_removal_get_stats(spa, &prs) == 0) {
+ fnvlist_add_uint64_array(nvl,
+ ZPOOL_CONFIG_REMOVAL_STATS, (uint64_t *)&prs,
+ sizeof (prs) / sizeof (uint64_t));
+ }
+
+ pool_checkpoint_stat_t pcs;
+ if (spa_checkpoint_get_stats(spa, &pcs) == 0) {
+ fnvlist_add_uint64_array(nvl,
+ ZPOOL_CONFIG_CHECKPOINT_STATS, (uint64_t *)&pcs,
+ sizeof (pcs) / sizeof (uint64_t));
+ }
+}
+
/*
* Generate the nvlist representing this vdev's config.
*/
nvlist_t *
vdev_config_generate(spa_t *spa, vdev_t *vd, boolean_t getstats,
- boolean_t isspare, boolean_t isl2cache)
+ vdev_config_flag_t flags)
{
nvlist_t *nv = NULL;
+ vdev_indirect_config_t *vic = &vd->vdev_indirect_config;
- VERIFY(nvlist_alloc(&nv, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ nv = fnvlist_alloc();
- VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_TYPE,
- vd->vdev_ops->vdev_op_type) == 0);
- if (!isspare && !isl2cache)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_ID, vd->vdev_id)
- == 0);
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_GUID, vd->vdev_guid) == 0);
+ fnvlist_add_string(nv, ZPOOL_CONFIG_TYPE, vd->vdev_ops->vdev_op_type);
+ if (!(flags & (VDEV_CONFIG_SPARE | VDEV_CONFIG_L2CACHE)))
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_ID, vd->vdev_id);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_GUID, vd->vdev_guid);
if (vd->vdev_path != NULL)
- VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_PATH,
- vd->vdev_path) == 0);
+ fnvlist_add_string(nv, ZPOOL_CONFIG_PATH, vd->vdev_path);
if (vd->vdev_devid != NULL)
- VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_DEVID,
- vd->vdev_devid) == 0);
+ fnvlist_add_string(nv, ZPOOL_CONFIG_DEVID, vd->vdev_devid);
if (vd->vdev_physpath != NULL)
- VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_PHYS_PATH,
- vd->vdev_physpath) == 0);
+ fnvlist_add_string(nv, ZPOOL_CONFIG_PHYS_PATH,
+ vd->vdev_physpath);
+
+ if (vd->vdev_enc_sysfs_path != NULL)
+ fnvlist_add_string(nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH,
+ vd->vdev_enc_sysfs_path);
if (vd->vdev_fru != NULL)
- VERIFY(nvlist_add_string(nv, ZPOOL_CONFIG_FRU,
- vd->vdev_fru) == 0);
+ fnvlist_add_string(nv, ZPOOL_CONFIG_FRU, vd->vdev_fru);
if (vd->vdev_nparity != 0) {
ASSERT(strcmp(vd->vdev_ops->vdev_op_type,
* into a crufty old storage pool.
*/
ASSERT(vd->vdev_nparity == 1 ||
- (vd->vdev_nparity == 2 &&
- spa_version(spa) >= SPA_VERSION_RAID6));
+ (vd->vdev_nparity <= 2 &&
+ spa_version(spa) >= SPA_VERSION_RAIDZ2) ||
+ (vd->vdev_nparity <= 3 &&
+ spa_version(spa) >= SPA_VERSION_RAIDZ3));
/*
* Note that we'll add the nparity tag even on storage pools
* that only support a single parity device -- older software
* will just ignore it.
*/
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_NPARITY,
- vd->vdev_nparity) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_NPARITY, vd->vdev_nparity);
}
if (vd->vdev_wholedisk != -1ULL)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
- vd->vdev_wholedisk) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK,
+ vd->vdev_wholedisk);
- if (vd->vdev_not_present)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 1) == 0);
+ if (vd->vdev_not_present && !(flags & VDEV_CONFIG_MISSING))
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_NOT_PRESENT, 1);
if (vd->vdev_isspare)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 1) == 0);
-
- if (!isspare && !isl2cache && vd == vd->vdev_top) {
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY,
- vd->vdev_ms_array) == 0);
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT,
- vd->vdev_ms_shift) == 0);
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_ASHIFT,
- vd->vdev_ashift) == 0);
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_ASIZE,
- vd->vdev_asize) == 0);
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_IS_LOG,
- vd->vdev_islog) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_IS_SPARE, 1);
+
+ if (!(flags & (VDEV_CONFIG_SPARE | VDEV_CONFIG_L2CACHE)) &&
+ vd == vd->vdev_top) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_METASLAB_ARRAY,
+ vd->vdev_ms_array);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_METASLAB_SHIFT,
+ vd->vdev_ms_shift);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_ASHIFT, vd->vdev_ashift);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_ASIZE,
+ vd->vdev_asize);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_IS_LOG, vd->vdev_islog);
+ if (vd->vdev_removing) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_REMOVING,
+ vd->vdev_removing);
+ }
+
+ /* zpool command expects alloc class data */
+ if (getstats && vd->vdev_alloc_bias != VDEV_BIAS_NONE) {
+ const char *bias = NULL;
+
+ switch (vd->vdev_alloc_bias) {
+ case VDEV_BIAS_LOG:
+ bias = VDEV_ALLOC_BIAS_LOG;
+ break;
+ case VDEV_BIAS_SPECIAL:
+ bias = VDEV_ALLOC_BIAS_SPECIAL;
+ break;
+ case VDEV_BIAS_DEDUP:
+ bias = VDEV_ALLOC_BIAS_DEDUP;
+ break;
+ default:
+ ASSERT3U(vd->vdev_alloc_bias, ==,
+ VDEV_BIAS_NONE);
+ }
+ fnvlist_add_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS,
+ bias);
+ }
+ }
+
+ if (vd->vdev_dtl_sm != NULL) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_DTL,
+ space_map_object(vd->vdev_dtl_sm));
+ }
+
+ if (vic->vic_mapping_object != 0) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_INDIRECT_OBJECT,
+ vic->vic_mapping_object);
+ }
+
+ if (vic->vic_births_object != 0) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_INDIRECT_BIRTHS,
+ vic->vic_births_object);
+ }
+
+ if (vic->vic_prev_indirect_vdev != UINT64_MAX) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_PREV_INDIRECT_VDEV,
+ vic->vic_prev_indirect_vdev);
}
- if (vd->vdev_dtl_smo.smo_object != 0)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_DTL,
- vd->vdev_dtl_smo.smo_object) == 0);
+ if (vd->vdev_crtxg)
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_CREATE_TXG, vd->vdev_crtxg);
+
+ if (vd->vdev_expansion_time)
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_EXPANSION_TIME,
+ vd->vdev_expansion_time);
+
+ if (flags & VDEV_CONFIG_MOS) {
+ if (vd->vdev_leaf_zap != 0) {
+ ASSERT(vd->vdev_ops->vdev_op_leaf);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_VDEV_LEAF_ZAP,
+ vd->vdev_leaf_zap);
+ }
+
+ if (vd->vdev_top_zap != 0) {
+ ASSERT(vd == vd->vdev_top);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_VDEV_TOP_ZAP,
+ vd->vdev_top_zap);
+ }
+
+ if (vd->vdev_resilver_deferred) {
+ ASSERT(vd->vdev_ops->vdev_op_leaf);
+ ASSERT(spa->spa_resilver_deferred);
+ fnvlist_add_boolean(nv, ZPOOL_CONFIG_RESILVER_DEFER);
+ }
+ }
if (getstats) {
- vdev_stat_t vs;
- vdev_get_stats(vd, &vs);
- VERIFY(nvlist_add_uint64_array(nv, ZPOOL_CONFIG_STATS,
- (uint64_t *)&vs, sizeof (vs) / sizeof (uint64_t)) == 0);
+ vdev_config_generate_stats(vd, nv);
+
+ root_vdev_actions_getprogress(vd, nv);
+
+ /*
+ * Note: this can be called from open context
+ * (spa_get_stats()), so we need the rwlock to prevent
+ * the mapping from being changed by condensing.
+ */
+ rw_enter(&vd->vdev_indirect_rwlock, RW_READER);
+ if (vd->vdev_indirect_mapping != NULL) {
+ ASSERT(vd->vdev_indirect_births != NULL);
+ vdev_indirect_mapping_t *vim =
+ vd->vdev_indirect_mapping;
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_INDIRECT_SIZE,
+ vdev_indirect_mapping_size(vim));
+ }
+ rw_exit(&vd->vdev_indirect_rwlock);
+ if (vd->vdev_mg != NULL &&
+ vd->vdev_mg->mg_fragmentation != ZFS_FRAG_INVALID) {
+ /*
+ * Compute approximately how much memory would be used
+ * for the indirect mapping if this device were to
+ * be removed.
+ *
+ * Note: If the frag metric is invalid, then not
+ * enough metaslabs have been converted to have
+ * histograms.
+ */
+ uint64_t seg_count = 0;
+ uint64_t to_alloc = vd->vdev_stat.vs_alloc;
+
+ /*
+ * There are the same number of allocated segments
+ * as free segments, so we will have at least one
+ * entry per free segment. However, small free
+ * segments (smaller than vdev_removal_max_span)
+ * will be combined with adjacent allocated segments
+ * as a single mapping.
+ */
+ for (int i = 0; i < RANGE_TREE_HISTOGRAM_SIZE; i++) {
+ if (1ULL << (i + 1) < vdev_removal_max_span) {
+ to_alloc +=
+ vd->vdev_mg->mg_histogram[i] <<
+ (i + 1);
+ } else {
+ seg_count +=
+ vd->vdev_mg->mg_histogram[i];
+ }
+ }
+
+ /*
+ * The maximum length of a mapping is
+ * zfs_remove_max_segment, so we need at least one entry
+ * per zfs_remove_max_segment of allocated data.
+ */
+ seg_count += to_alloc / zfs_remove_max_segment;
+
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_INDIRECT_SIZE,
+ seg_count *
+ sizeof (vdev_indirect_mapping_entry_phys_t));
+ }
}
if (!vd->vdev_ops->vdev_op_leaf) {
nvlist_t **child;
- int c;
+ int c, idx;
+
+ ASSERT(!vd->vdev_ishole);
child = kmem_alloc(vd->vdev_children * sizeof (nvlist_t *),
KM_SLEEP);
- for (c = 0; c < vd->vdev_children; c++)
- child[c] = vdev_config_generate(spa, vd->vdev_child[c],
- getstats, isspare, isl2cache);
+ for (c = 0, idx = 0; c < vd->vdev_children; c++) {
+ vdev_t *cvd = vd->vdev_child[c];
+
+ /*
+ * If we're generating an nvlist of removing
+ * vdevs then skip over any device which is
+ * not being removed.
+ */
+ if ((flags & VDEV_CONFIG_REMOVING) &&
+ !cvd->vdev_removing)
+ continue;
+
+ child[idx++] = vdev_config_generate(spa, cvd,
+ getstats, flags);
+ }
- VERIFY(nvlist_add_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
- child, vd->vdev_children) == 0);
+ if (idx) {
+ fnvlist_add_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
+ child, idx);
+ }
- for (c = 0; c < vd->vdev_children; c++)
+ for (c = 0; c < idx; c++)
nvlist_free(child[c]);
kmem_free(child, vd->vdev_children * sizeof (nvlist_t *));
} else {
+ const char *aux = NULL;
+
if (vd->vdev_offline && !vd->vdev_tmpoffline)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_OFFLINE,
- B_TRUE) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_OFFLINE, B_TRUE);
+ if (vd->vdev_resilver_txg != 0)
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_RESILVER_TXG,
+ vd->vdev_resilver_txg);
if (vd->vdev_faulted)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_FAULTED,
- B_TRUE) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_FAULTED, B_TRUE);
if (vd->vdev_degraded)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_DEGRADED,
- B_TRUE) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_DEGRADED, B_TRUE);
if (vd->vdev_removed)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_REMOVED,
- B_TRUE) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_REMOVED, B_TRUE);
if (vd->vdev_unspare)
- VERIFY(nvlist_add_uint64(nv, ZPOOL_CONFIG_UNSPARE,
- B_TRUE) == 0);
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_UNSPARE, B_TRUE);
+ if (vd->vdev_ishole)
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_IS_HOLE, B_TRUE);
+
+ /* Set the reason why we're FAULTED/DEGRADED. */
+ switch (vd->vdev_stat.vs_aux) {
+ case VDEV_AUX_ERR_EXCEEDED:
+ aux = "err_exceeded";
+ break;
+
+ case VDEV_AUX_EXTERNAL:
+ aux = "external";
+ break;
+ }
+
+ if (aux != NULL && !vd->vdev_tmpoffline) {
+ fnvlist_add_string(nv, ZPOOL_CONFIG_AUX_STATE, aux);
+ } else {
+ /*
+ * We're healthy - clear any previous AUX_STATE values.
+ */
+ if (nvlist_exists(nv, ZPOOL_CONFIG_AUX_STATE))
+ nvlist_remove_all(nv, ZPOOL_CONFIG_AUX_STATE);
+ }
+
+ if (vd->vdev_splitting && vd->vdev_orig_guid != 0LL) {
+ fnvlist_add_uint64(nv, ZPOOL_CONFIG_ORIG_GUID,
+ vd->vdev_orig_guid);
+ }
}
return (nv);
}
+/*
+ * Generate a view of the top-level vdevs. If we currently have holes
+ * in the namespace, then generate an array which contains a list of holey
+ * vdevs. Additionally, add the number of top-level children that currently
+ * exist.
+ */
+void
+vdev_top_config_generate(spa_t *spa, nvlist_t *config)
+{
+ vdev_t *rvd = spa->spa_root_vdev;
+ uint64_t *array;
+ uint_t c, idx;
+
+ array = kmem_alloc(rvd->vdev_children * sizeof (uint64_t), KM_SLEEP);
+
+ for (c = 0, idx = 0; c < rvd->vdev_children; c++) {
+ vdev_t *tvd = rvd->vdev_child[c];
+
+ if (tvd->vdev_ishole) {
+ array[idx++] = c;
+ }
+ }
+
+ if (idx) {
+ VERIFY(nvlist_add_uint64_array(config, ZPOOL_CONFIG_HOLE_ARRAY,
+ array, idx) == 0);
+ }
+
+ VERIFY(nvlist_add_uint64(config, ZPOOL_CONFIG_VDEV_CHILDREN,
+ rvd->vdev_children) == 0);
+
+ kmem_free(array, rvd->vdev_children * sizeof (uint64_t));
+}
+
+/*
+ * Returns the configuration from the label of the given vdev. For vdevs
+ * which don't have a txg value stored on their label (i.e. spares/cache)
+ * or have not been completely initialized (txg = 0) just return
+ * the configuration from the first valid label we find. Otherwise,
+ * find the most up-to-date label that does not exceed the specified
+ * 'txg' value.
+ */
nvlist_t *
-vdev_label_read_config(vdev_t *vd)
+vdev_label_read_config(vdev_t *vd, uint64_t txg)
{
spa_t *spa = vd->vdev_spa;
nvlist_t *config = NULL;
vdev_phys_t *vp;
+ abd_t *vp_abd;
zio_t *zio;
+ uint64_t best_txg = 0;
+ uint64_t label_txg = 0;
+ int error = 0;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
ZIO_FLAG_SPECULATIVE;
if (!vdev_readable(vd))
return (NULL);
- vp = zio_buf_alloc(sizeof (vdev_phys_t));
+ vp_abd = abd_alloc_linear(sizeof (vdev_phys_t), B_TRUE);
+ vp = abd_to_buf(vp_abd);
retry:
for (int l = 0; l < VDEV_LABELS; l++) {
+ nvlist_t *label = NULL;
zio = zio_root(spa, NULL, NULL, flags);
- vdev_label_read(zio, vd, l, vp,
+ vdev_label_read(zio, vd, l, vp_abd,
offsetof(vdev_label_t, vl_vdev_phys),
sizeof (vdev_phys_t), NULL, NULL, flags);
if (zio_wait(zio) == 0 &&
nvlist_unpack(vp->vp_nvlist, sizeof (vp->vp_nvlist),
- &config, 0) == 0)
- break;
+ &label, 0) == 0) {
+ /*
+ * Auxiliary vdevs won't have txg values in their
+ * labels and newly added vdevs may not have been
+ * completely initialized so just return the
+ * configuration from the first valid label we
+ * encounter.
+ */
+ error = nvlist_lookup_uint64(label,
+ ZPOOL_CONFIG_POOL_TXG, &label_txg);
+ if ((error || label_txg == 0) && !config) {
+ config = label;
+ break;
+ } else if (label_txg <= txg && label_txg > best_txg) {
+ best_txg = label_txg;
+ nvlist_free(config);
+ config = fnvlist_dup(label);
+ }
+ }
- if (config != NULL) {
- nvlist_free(config);
- config = NULL;
+ if (label != NULL) {
+ nvlist_free(label);
+ label = NULL;
}
}
goto retry;
}
- zio_buf_free(vp, sizeof (vdev_phys_t));
+ /*
+ * We found a valid label but it didn't pass txg restrictions.
+ */
+ if (config == NULL && label_txg != 0) {
+ vdev_dbgmsg(vd, "label discarded as txg is too large "
+ "(%llu > %llu)", (u_longlong_t)label_txg,
+ (u_longlong_t)txg);
+ }
+
+ abd_free(vp_abd);
return (config);
}
/*
* Read the label, if any, and perform some basic sanity checks.
*/
- if ((label = vdev_label_read_config(vd)) == NULL)
+ if ((label = vdev_label_read_config(vd, -1ULL)) == NULL)
return (B_FALSE);
(void) nvlist_lookup_uint64(label, ZPOOL_CONFIG_CREATE_TXG,
case VDEV_LABEL_SPARE:
return (spa_has_spare(spa, device_guid));
+ default:
+ break;
}
}
if (spa_l2cache_exists(device_guid, NULL))
return (B_TRUE);
+ /*
+ * We can't rely on a pool's state if it's been imported
+ * read-only. Instead we look to see if the pools is marked
+ * read-only in the namespace and set the state to active.
+ */
+ if (state != POOL_STATE_SPARE && state != POOL_STATE_L2CACHE &&
+ (spa = spa_by_guid(pool_guid, device_guid)) != NULL &&
+ spa_mode(spa) == FREAD)
+ state = POOL_STATE_ACTIVE;
+
/*
* If the device is marked ACTIVE, then this device is in use by another
* pool on the system.
spa_t *spa = vd->vdev_spa;
nvlist_t *label;
vdev_phys_t *vp;
- char *pad2;
+ abd_t *vp_abd;
+ abd_t *pad2;
uberblock_t *ub;
+ abd_t *ub_abd;
zio_t *zio;
char *buf;
size_t buflen;
int error;
- uint64_t spare_guid, l2cache_guid;
+ uint64_t spare_guid = 0, l2cache_guid = 0;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
ASSERT(spa_config_held(spa, SCL_ALL, RW_WRITER) == SCL_ALL);
crtxg, reason)) != 0)
return (error);
- if (!vd->vdev_ops->vdev_op_leaf)
+ /* Track the creation time for this vdev */
+ vd->vdev_crtxg = crtxg;
+
+ if (!vd->vdev_ops->vdev_op_leaf || !spa_writeable(spa))
return (0);
/*
* Dead vdevs cannot be initialized.
*/
if (vdev_is_dead(vd))
- return (EIO);
+ return (SET_ERROR(EIO));
/*
* Determine if the vdev is in use.
*/
- if (reason != VDEV_LABEL_REMOVE &&
+ if (reason != VDEV_LABEL_REMOVE && reason != VDEV_LABEL_SPLIT &&
vdev_inuse(vd, crtxg, reason, &spare_guid, &l2cache_guid))
- return (EBUSY);
+ return (SET_ERROR(EBUSY));
/*
* If this is a request to add or replace a spare or l2cache device
*/
if (reason == VDEV_LABEL_SPARE)
return (0);
- ASSERT(reason == VDEV_LABEL_REPLACE);
+ ASSERT(reason == VDEV_LABEL_REPLACE ||
+ reason == VDEV_LABEL_SPLIT);
}
if (reason != VDEV_LABEL_REMOVE && reason != VDEV_LABEL_SPARE &&
/*
* Initialize its label.
*/
- vp = zio_buf_alloc(sizeof (vdev_phys_t));
- bzero(vp, sizeof (vdev_phys_t));
+ vp_abd = abd_alloc_linear(sizeof (vdev_phys_t), B_TRUE);
+ abd_zero(vp_abd, sizeof (vdev_phys_t));
+ vp = abd_to_buf(vp_abd);
/*
* Generate a label describing the pool and our top-level vdev.
VERIFY(nvlist_add_uint64(label, ZPOOL_CONFIG_GUID,
vd->vdev_guid) == 0);
} else {
- label = spa_config_generate(spa, vd, 0ULL, B_FALSE);
+ uint64_t txg = 0ULL;
+
+ if (reason == VDEV_LABEL_SPLIT)
+ txg = spa->spa_uberblock.ub_txg;
+ label = spa_config_generate(spa, vd, txg, B_FALSE);
/*
* Add our creation time. This allows us to detect multiple
error = nvlist_pack(label, &buf, &buflen, NV_ENCODE_XDR, KM_SLEEP);
if (error != 0) {
nvlist_free(label);
- zio_buf_free(vp, sizeof (vdev_phys_t));
+ abd_free(vp_abd);
/* EFAULT means nvlist_pack ran out of room */
- return (error == EFAULT ? ENAMETOOLONG : EINVAL);
+ return (SET_ERROR(error == EFAULT ? ENAMETOOLONG : EINVAL));
}
/*
* Initialize uberblock template.
*/
- ub = zio_buf_alloc(VDEV_UBERBLOCK_SIZE(vd));
- bzero(ub, VDEV_UBERBLOCK_SIZE(vd));
- *ub = spa->spa_uberblock;
+ ub_abd = abd_alloc_linear(VDEV_UBERBLOCK_RING, B_TRUE);
+ abd_zero(ub_abd, VDEV_UBERBLOCK_RING);
+ abd_copy_from_buf(ub_abd, &spa->spa_uberblock, sizeof (uberblock_t));
+ ub = abd_to_buf(ub_abd);
ub->ub_txg = 0;
/* Initialize the 2nd padding area. */
- pad2 = zio_buf_alloc(VDEV_PAD_SIZE);
- bzero(pad2, VDEV_PAD_SIZE);
+ pad2 = abd_alloc_for_io(VDEV_PAD_SIZE, B_TRUE);
+ abd_zero(pad2, VDEV_PAD_SIZE);
/*
* Write everything in parallel.
for (int l = 0; l < VDEV_LABELS; l++) {
- vdev_label_write(zio, vd, l, vp,
+ vdev_label_write(zio, vd, l, vp_abd,
offsetof(vdev_label_t, vl_vdev_phys),
sizeof (vdev_phys_t), NULL, NULL, flags);
offsetof(vdev_label_t, vl_pad2),
VDEV_PAD_SIZE, NULL, NULL, flags);
- for (int n = 0; n < VDEV_UBERBLOCK_COUNT(vd); n++) {
- vdev_label_write(zio, vd, l, ub,
- VDEV_UBERBLOCK_OFFSET(vd, n),
- VDEV_UBERBLOCK_SIZE(vd), NULL, NULL, flags);
- }
+ vdev_label_write(zio, vd, l, ub_abd,
+ offsetof(vdev_label_t, vl_uberblock),
+ VDEV_UBERBLOCK_RING, NULL, NULL, flags);
}
error = zio_wait(zio);
}
nvlist_free(label);
- zio_buf_free(pad2, VDEV_PAD_SIZE);
- zio_buf_free(ub, VDEV_UBERBLOCK_SIZE(vd));
- zio_buf_free(vp, sizeof (vdev_phys_t));
+ abd_free(pad2);
+ abd_free(ub_abd);
+ abd_free(vp_abd);
/*
* If this vdev hasn't been previously identified as a spare, then we
* ==========================================================================
*/
-/*
- * For use by zdb and debugging purposes only
- */
-uint64_t ub_max_txg = UINT64_MAX;
-
/*
* Consider the following situation: txg is safely synced to disk. We've
* written the first uberblock for txg + 1, and then we lose power. When we
* come back up, we fail to see the uberblock for txg + 1 because, say,
* it was on a mirrored device and the replica to which we wrote txg + 1
* is now offline. If we then make some changes and sync txg + 1, and then
- * the missing replica comes back, then for a new seconds we'll have two
+ * the missing replica comes back, then for a few seconds we'll have two
* conflicting uberblocks on disk with the same txg. The solution is simple:
* among uberblocks with equal txg, choose the one with the latest timestamp.
*/
static int
-vdev_uberblock_compare(uberblock_t *ub1, uberblock_t *ub2)
+vdev_uberblock_compare(const uberblock_t *ub1, const uberblock_t *ub2)
{
- if (ub1->ub_txg < ub2->ub_txg)
- return (-1);
- if (ub1->ub_txg > ub2->ub_txg)
- return (1);
+ int cmp = AVL_CMP(ub1->ub_txg, ub2->ub_txg);
- if (ub1->ub_timestamp < ub2->ub_timestamp)
- return (-1);
- if (ub1->ub_timestamp > ub2->ub_timestamp)
- return (1);
+ if (likely(cmp))
+ return (cmp);
- return (0);
+ cmp = AVL_CMP(ub1->ub_timestamp, ub2->ub_timestamp);
+ if (likely(cmp))
+ return (cmp);
+
+ /*
+ * If MMP_VALID(ub) && MMP_SEQ_VALID(ub) then the host has an MMP-aware
+ * ZFS, e.g. zfsonlinux >= 0.7.
+ *
+ * If one ub has MMP and the other does not, they were written by
+ * different hosts, which matters for MMP. So we treat no MMP/no SEQ as
+ * a 0 value.
+ *
+ * Since timestamp and txg are the same if we get this far, either is
+ * acceptable for importing the pool.
+ */
+ unsigned int seq1 = 0;
+ unsigned int seq2 = 0;
+
+ if (MMP_VALID(ub1) && MMP_SEQ_VALID(ub1))
+ seq1 = MMP_SEQ(ub1);
+
+ if (MMP_VALID(ub2) && MMP_SEQ_VALID(ub2))
+ seq2 = MMP_SEQ(ub2);
+
+ return (AVL_CMP(seq1, seq2));
}
+struct ubl_cbdata {
+ uberblock_t *ubl_ubbest; /* Best uberblock */
+ vdev_t *ubl_vd; /* vdev associated with the above */
+};
+
static void
vdev_uberblock_load_done(zio_t *zio)
{
+ vdev_t *vd = zio->io_vd;
+ spa_t *spa = zio->io_spa;
zio_t *rio = zio->io_private;
- uberblock_t *ub = zio->io_data;
- uberblock_t *ubbest = rio->io_private;
+ uberblock_t *ub = abd_to_buf(zio->io_abd);
+ struct ubl_cbdata *cbp = rio->io_private;
- ASSERT3U(zio->io_size, ==, VDEV_UBERBLOCK_SIZE(zio->io_vd));
+ ASSERT3U(zio->io_size, ==, VDEV_UBERBLOCK_SIZE(vd));
if (zio->io_error == 0 && uberblock_verify(ub) == 0) {
mutex_enter(&rio->io_lock);
- if (ub->ub_txg <= ub_max_txg &&
- vdev_uberblock_compare(ub, ubbest) > 0)
- *ubbest = *ub;
+ if (ub->ub_txg <= spa->spa_load_max_txg &&
+ vdev_uberblock_compare(ub, cbp->ubl_ubbest) > 0) {
+ /*
+ * Keep track of the vdev in which this uberblock
+ * was found. We will use this information later
+ * to obtain the config nvlist associated with
+ * this uberblock.
+ */
+ *cbp->ubl_ubbest = *ub;
+ cbp->ubl_vd = vd;
+ }
mutex_exit(&rio->io_lock);
}
- zio_buf_free(zio->io_data, zio->io_size);
+ abd_free(zio->io_abd);
}
-void
-vdev_uberblock_load(zio_t *zio, vdev_t *vd, uberblock_t *ubbest)
+static void
+vdev_uberblock_load_impl(zio_t *zio, vdev_t *vd, int flags,
+ struct ubl_cbdata *cbp)
{
- spa_t *spa = vd->vdev_spa;
- vdev_t *rvd = spa->spa_root_vdev;
- int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
- ZIO_FLAG_SPECULATIVE | ZIO_FLAG_TRYHARD;
-
- if (vd == rvd) {
- ASSERT(zio == NULL);
- spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
- zio = zio_root(spa, NULL, ubbest, flags);
- bzero(ubbest, sizeof (uberblock_t));
- }
-
- ASSERT(zio != NULL);
-
for (int c = 0; c < vd->vdev_children; c++)
- vdev_uberblock_load(zio, vd->vdev_child[c], ubbest);
+ vdev_uberblock_load_impl(zio, vd->vdev_child[c], flags, cbp);
if (vd->vdev_ops->vdev_op_leaf && vdev_readable(vd)) {
for (int l = 0; l < VDEV_LABELS; l++) {
for (int n = 0; n < VDEV_UBERBLOCK_COUNT(vd); n++) {
vdev_label_read(zio, vd, l,
- zio_buf_alloc(VDEV_UBERBLOCK_SIZE(vd)),
- VDEV_UBERBLOCK_OFFSET(vd, n),
+ abd_alloc_linear(VDEV_UBERBLOCK_SIZE(vd),
+ B_TRUE), VDEV_UBERBLOCK_OFFSET(vd, n),
VDEV_UBERBLOCK_SIZE(vd),
vdev_uberblock_load_done, zio, flags);
}
}
}
+}
- if (vd == rvd) {
- (void) zio_wait(zio);
- spa_config_exit(spa, SCL_ALL, FTAG);
+/*
+ * Reads the 'best' uberblock from disk along with its associated
+ * configuration. First, we read the uberblock array of each label of each
+ * vdev, keeping track of the uberblock with the highest txg in each array.
+ * Then, we read the configuration from the same vdev as the best uberblock.
+ */
+void
+vdev_uberblock_load(vdev_t *rvd, uberblock_t *ub, nvlist_t **config)
+{
+ zio_t *zio;
+ spa_t *spa = rvd->vdev_spa;
+ struct ubl_cbdata cb;
+ int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
+ ZIO_FLAG_SPECULATIVE | ZIO_FLAG_TRYHARD;
+
+ ASSERT(ub);
+ ASSERT(config);
+
+ bzero(ub, sizeof (uberblock_t));
+ *config = NULL;
+
+ cb.ubl_ubbest = ub;
+ cb.ubl_vd = NULL;
+
+ spa_config_enter(spa, SCL_ALL, FTAG, RW_WRITER);
+ zio = zio_root(spa, NULL, &cb, flags);
+ vdev_uberblock_load_impl(zio, rvd, flags, &cb);
+ (void) zio_wait(zio);
+
+ /*
+ * It's possible that the best uberblock was discovered on a label
+ * that has a configuration which was written in a future txg.
+ * Search all labels on this vdev to find the configuration that
+ * matches the txg for our uberblock.
+ */
+ if (cb.ubl_vd != NULL) {
+ vdev_dbgmsg(cb.ubl_vd, "best uberblock found for spa %s. "
+ "txg %llu", spa->spa_name, (u_longlong_t)ub->ub_txg);
+
+ *config = vdev_label_read_config(cb.ubl_vd, ub->ub_txg);
+ if (*config == NULL && spa->spa_extreme_rewind) {
+ vdev_dbgmsg(cb.ubl_vd, "failed to read label config. "
+ "Trying again without txg restrictions.");
+ *config = vdev_label_read_config(cb.ubl_vd, UINT64_MAX);
+ }
+ if (*config == NULL) {
+ vdev_dbgmsg(cb.ubl_vd, "failed to read label config");
+ }
}
+ spa_config_exit(spa, SCL_ALL, FTAG);
+}
+
+/*
+ * For use when a leaf vdev is expanded.
+ * The location of labels 2 and 3 changed, and at the new location the
+ * uberblock rings are either empty or contain garbage. The sync will write
+ * new configs there because the vdev is dirty, but expansion also needs the
+ * uberblock rings copied. Read them from label 0 which did not move.
+ *
+ * Since the point is to populate labels {2,3} with valid uberblocks,
+ * we zero uberblocks we fail to read or which are not valid.
+ */
+
+static void
+vdev_copy_uberblocks(vdev_t *vd)
+{
+ abd_t *ub_abd;
+ zio_t *write_zio;
+ int locks = (SCL_L2ARC | SCL_ZIO);
+ int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL |
+ ZIO_FLAG_SPECULATIVE;
+
+ ASSERT(spa_config_held(vd->vdev_spa, SCL_STATE, RW_READER) ==
+ SCL_STATE);
+ ASSERT(vd->vdev_ops->vdev_op_leaf);
+
+ spa_config_enter(vd->vdev_spa, locks, FTAG, RW_READER);
+
+ ub_abd = abd_alloc_linear(VDEV_UBERBLOCK_SIZE(vd), B_TRUE);
+
+ write_zio = zio_root(vd->vdev_spa, NULL, NULL, flags);
+ for (int n = 0; n < VDEV_UBERBLOCK_COUNT(vd); n++) {
+ const int src_label = 0;
+ zio_t *zio;
+
+ zio = zio_root(vd->vdev_spa, NULL, NULL, flags);
+ vdev_label_read(zio, vd, src_label, ub_abd,
+ VDEV_UBERBLOCK_OFFSET(vd, n), VDEV_UBERBLOCK_SIZE(vd),
+ NULL, NULL, flags);
+
+ if (zio_wait(zio) || uberblock_verify(abd_to_buf(ub_abd)))
+ abd_zero(ub_abd, VDEV_UBERBLOCK_SIZE(vd));
+
+ for (int l = 2; l < VDEV_LABELS; l++)
+ vdev_label_write(write_zio, vd, l, ub_abd,
+ VDEV_UBERBLOCK_OFFSET(vd, n),
+ VDEV_UBERBLOCK_SIZE(vd), NULL, NULL,
+ flags | ZIO_FLAG_DONT_PROPAGATE);
+ }
+ (void) zio_wait(write_zio);
+
+ spa_config_exit(vd->vdev_spa, locks, FTAG);
+
+ abd_free(ub_abd);
}
/*
uint64_t *good_writes = zio->io_private;
if (zio->io_error == 0 && zio->io_vd->vdev_top->vdev_ms_array != 0)
- atomic_add_64(good_writes, 1);
+ atomic_inc_64(good_writes);
}
/*
* Write the uberblock to all labels of all leaves of the specified vdev.
*/
static void
-vdev_uberblock_sync(zio_t *zio, uberblock_t *ub, vdev_t *vd, int flags)
+vdev_uberblock_sync(zio_t *zio, uint64_t *good_writes,
+ uberblock_t *ub, vdev_t *vd, int flags)
{
- uberblock_t *ubbuf;
- int n;
-
- for (int c = 0; c < vd->vdev_children; c++)
- vdev_uberblock_sync(zio, ub, vd->vdev_child[c], flags);
+ for (uint64_t c = 0; c < vd->vdev_children; c++) {
+ vdev_uberblock_sync(zio, good_writes,
+ ub, vd->vdev_child[c], flags);
+ }
if (!vd->vdev_ops->vdev_op_leaf)
return;
if (!vdev_writeable(vd))
return;
- n = ub->ub_txg & (VDEV_UBERBLOCK_COUNT(vd) - 1);
+ /* If the vdev was expanded, need to copy uberblock rings. */
+ if (vd->vdev_state == VDEV_STATE_HEALTHY &&
+ vd->vdev_copy_uberblocks == B_TRUE) {
+ vdev_copy_uberblocks(vd);
+ vd->vdev_copy_uberblocks = B_FALSE;
+ }
+
+ int m = spa_multihost(vd->vdev_spa) ? MMP_BLOCKS_PER_LABEL : 0;
+ int n = ub->ub_txg % (VDEV_UBERBLOCK_COUNT(vd) - m);
- ubbuf = zio_buf_alloc(VDEV_UBERBLOCK_SIZE(vd));
- bzero(ubbuf, VDEV_UBERBLOCK_SIZE(vd));
- *ubbuf = *ub;
+ /* Copy the uberblock_t into the ABD */
+ abd_t *ub_abd = abd_alloc_for_io(VDEV_UBERBLOCK_SIZE(vd), B_TRUE);
+ abd_zero(ub_abd, VDEV_UBERBLOCK_SIZE(vd));
+ abd_copy_from_buf(ub_abd, ub, sizeof (uberblock_t));
for (int l = 0; l < VDEV_LABELS; l++)
- vdev_label_write(zio, vd, l, ubbuf,
+ vdev_label_write(zio, vd, l, ub_abd,
VDEV_UBERBLOCK_OFFSET(vd, n), VDEV_UBERBLOCK_SIZE(vd),
- vdev_uberblock_sync_done, zio->io_private,
+ vdev_uberblock_sync_done, good_writes,
flags | ZIO_FLAG_DONT_PROPAGATE);
- zio_buf_free(ubbuf, VDEV_UBERBLOCK_SIZE(vd));
+ abd_free(ub_abd);
}
+/* Sync the uberblocks to all vdevs in svd[] */
int
vdev_uberblock_sync_list(vdev_t **svd, int svdcount, uberblock_t *ub, int flags)
{
zio_t *zio;
uint64_t good_writes = 0;
- zio = zio_root(spa, NULL, &good_writes, flags);
+ zio = zio_root(spa, NULL, NULL, flags);
for (int v = 0; v < svdcount; v++)
- vdev_uberblock_sync(zio, ub, svd[v], flags);
+ vdev_uberblock_sync(zio, &good_writes, ub, svd[v], flags);
(void) zio_wait(zio);
*/
zio = zio_root(spa, NULL, NULL, flags);
- for (int v = 0; v < svdcount; v++)
- zio_flush(zio, svd[v]);
+ for (int v = 0; v < svdcount; v++) {
+ if (vdev_writeable(svd[v])) {
+ zio_flush(zio, svd[v]);
+ }
+ }
(void) zio_wait(zio);
uint64_t *good_writes = zio->io_private;
if (zio->io_error == 0)
- atomic_add_64(good_writes, 1);
+ atomic_inc_64(good_writes);
}
/*
uint64_t *good_writes = zio->io_private;
if (*good_writes == 0)
- zio->io_error = EIO;
+ zio->io_error = SET_ERROR(EIO);
kmem_free(good_writes, sizeof (uint64_t));
}
* Write all even or odd labels to all leaves of the specified vdev.
*/
static void
-vdev_label_sync(zio_t *zio, vdev_t *vd, int l, uint64_t txg, int flags)
+vdev_label_sync(zio_t *zio, uint64_t *good_writes,
+ vdev_t *vd, int l, uint64_t txg, int flags)
{
nvlist_t *label;
vdev_phys_t *vp;
+ abd_t *vp_abd;
char *buf;
size_t buflen;
- for (int c = 0; c < vd->vdev_children; c++)
- vdev_label_sync(zio, vd->vdev_child[c], l, txg, flags);
+ for (int c = 0; c < vd->vdev_children; c++) {
+ vdev_label_sync(zio, good_writes,
+ vd->vdev_child[c], l, txg, flags);
+ }
if (!vd->vdev_ops->vdev_op_leaf)
return;
*/
label = spa_config_generate(vd->vdev_spa, vd, txg, B_FALSE);
- vp = zio_buf_alloc(sizeof (vdev_phys_t));
- bzero(vp, sizeof (vdev_phys_t));
+ vp_abd = abd_alloc_linear(sizeof (vdev_phys_t), B_TRUE);
+ abd_zero(vp_abd, sizeof (vdev_phys_t));
+ vp = abd_to_buf(vp_abd);
buf = vp->vp_nvlist;
buflen = sizeof (vp->vp_nvlist);
- if (nvlist_pack(label, &buf, &buflen, NV_ENCODE_XDR, KM_SLEEP) == 0) {
+ if (!nvlist_pack(label, &buf, &buflen, NV_ENCODE_XDR, KM_SLEEP)) {
for (; l < VDEV_LABELS; l += 2) {
- vdev_label_write(zio, vd, l, vp,
+ vdev_label_write(zio, vd, l, vp_abd,
offsetof(vdev_label_t, vl_vdev_phys),
sizeof (vdev_phys_t),
- vdev_label_sync_done, zio->io_private,
+ vdev_label_sync_done, good_writes,
flags | ZIO_FLAG_DONT_PROPAGATE);
}
}
- zio_buf_free(vp, sizeof (vdev_phys_t));
+ abd_free(vp_abd);
nvlist_free(label);
}
zio = zio_root(spa, NULL, NULL, flags);
for (vd = list_head(dl); vd != NULL; vd = list_next(dl, vd)) {
- uint64_t *good_writes = kmem_zalloc(sizeof (uint64_t),
- KM_SLEEP);
+ uint64_t *good_writes;
+
+ ASSERT(!vd->vdev_ishole);
+
+ good_writes = kmem_zalloc(sizeof (uint64_t), KM_SLEEP);
zio_t *vio = zio_null(zio, spa, NULL,
(vd->vdev_islog || vd->vdev_aux != NULL) ?
vdev_label_sync_ignore_done : vdev_label_sync_top_done,
good_writes, flags);
- vdev_label_sync(vio, vd, l, txg, flags);
+ vdev_label_sync(vio, good_writes, vd, l, txg, flags);
zio_nowait(vio);
}
* at any time, you can just call it again, and it will resume its work.
*/
int
-vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg, boolean_t tryhard)
+vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg)
{
spa_t *spa = svd[0]->vdev_spa;
uberblock_t *ub = &spa->spa_uberblock;
- vdev_t *vd;
- zio_t *zio;
- int error;
+ int error = 0;
int flags = ZIO_FLAG_CONFIG_WRITER | ZIO_FLAG_CANFAIL;
+ ASSERT(svdcount != 0);
+retry:
/*
* Normally, we don't want to try too hard to write every label and
* uberblock. If there is a flaky disk, we don't want the rest of the
* single label out, we should retry with ZIO_FLAG_TRYHARD before
* bailing out and declaring the pool faulted.
*/
- if (tryhard)
+ if (error != 0) {
+ if ((flags & ZIO_FLAG_TRYHARD) != 0)
+ return (error);
flags |= ZIO_FLAG_TRYHARD;
+ }
ASSERT(ub->ub_txg <= txg);
* and the vdev configuration hasn't changed,
* then there's nothing to do.
*/
- if (ub->ub_txg < txg &&
- uberblock_update(ub, spa->spa_root_vdev, txg) == B_FALSE &&
- list_is_empty(&spa->spa_config_dirty_list))
- return (0);
+ if (ub->ub_txg < txg) {
+ boolean_t changed = uberblock_update(ub, spa->spa_root_vdev,
+ txg, spa->spa_mmp.mmp_delay);
+
+ if (!changed && list_is_empty(&spa->spa_config_dirty_list))
+ return (0);
+ }
if (txg > spa_freeze_txg(spa))
return (0);
* written in this txg will be committed to stable storage
* before any uberblock that references them.
*/
- zio = zio_root(spa, NULL, NULL, flags);
+ zio_t *zio = zio_root(spa, NULL, NULL, flags);
- for (vd = txg_list_head(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)); vd;
+ for (vdev_t *vd =
+ txg_list_head(&spa->spa_vdev_txg_list, TXG_CLEAN(txg)); vd != NULL;
vd = txg_list_next(&spa->spa_vdev_txg_list, vd, TXG_CLEAN(txg)))
zio_flush(zio, vd);
* the new labels to disk to ensure that all even-label updates
* are committed to stable storage before the uberblock update.
*/
- if ((error = vdev_label_sync_list(spa, 0, txg, flags)) != 0)
- return (error);
+ if ((error = vdev_label_sync_list(spa, 0, txg, flags)) != 0) {
+ if ((flags & ZIO_FLAG_TRYHARD) != 0) {
+ zfs_dbgmsg("vdev_label_sync_list() returned error %d "
+ "for pool '%s' when syncing out the even labels "
+ "of dirty vdevs", error, spa_name(spa));
+ }
+ goto retry;
+ }
/*
* Sync the uberblocks to all vdevs in svd[].
* been successfully committed) will be valid with respect
* to the new uberblocks.
*/
- if ((error = vdev_uberblock_sync_list(svd, svdcount, ub, flags)) != 0)
- return (error);
+ if ((error = vdev_uberblock_sync_list(svd, svdcount, ub, flags)) != 0) {
+ if ((flags & ZIO_FLAG_TRYHARD) != 0) {
+ zfs_dbgmsg("vdev_uberblock_sync_list() returned error "
+ "%d for pool '%s'", error, spa_name(spa));
+ }
+ goto retry;
+ }
+
+ if (spa_multihost(spa))
+ mmp_update_uberblock(spa, ub);
/*
* Sync out odd labels for every dirty vdev. If the system dies
* to disk to ensure that all odd-label updates are committed to
* stable storage before the next transaction group begins.
*/
- return (vdev_label_sync_list(spa, 1, txg, flags));
+ if ((error = vdev_label_sync_list(spa, 1, txg, flags)) != 0) {
+ if ((flags & ZIO_FLAG_TRYHARD) != 0) {
+ zfs_dbgmsg("vdev_label_sync_list() returned error %d "
+ "for pool '%s' when syncing out the odd labels of "
+ "dirty vdevs", error, spa_name(spa));
+ }
+ goto retry;
+ }
+
+ return (0);
}
projects / mirror_zfs.git / blobdiff