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9fa007d35d
Constify some variables after d1807f168e
.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Closes #14656
1327 lines
33 KiB
C
1327 lines
33 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Portions Copyright (c) 2012 Martin Matuska <mm@FreeBSD.org>
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*/
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#include <sys/zfs_context.h>
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/file.h>
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#include <sys/spa.h>
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#include <sys/spa_impl.h>
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#include <sys/vdev_impl.h>
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#include <sys/vdev_os.h>
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#include <sys/fs/zfs.h>
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#include <sys/zio.h>
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#include <vm/vm_page.h>
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#include <geom/geom.h>
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#include <geom/geom_disk.h>
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#include <geom/geom_int.h>
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#ifndef g_topology_locked
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#define g_topology_locked() sx_xlocked(&topology_lock)
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#endif
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/*
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* Virtual device vector for GEOM.
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*/
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static g_attrchanged_t vdev_geom_attrchanged;
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struct g_class zfs_vdev_class = {
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.name = "ZFS::VDEV",
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.version = G_VERSION,
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.attrchanged = vdev_geom_attrchanged,
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};
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struct consumer_vdev_elem {
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SLIST_ENTRY(consumer_vdev_elem) elems;
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vdev_t *vd;
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};
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SLIST_HEAD(consumer_priv_t, consumer_vdev_elem);
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_Static_assert(
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sizeof (((struct g_consumer *)NULL)->private) ==
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sizeof (struct consumer_priv_t *),
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"consumer_priv_t* can't be stored in g_consumer.private");
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DECLARE_GEOM_CLASS(zfs_vdev_class, zfs_vdev);
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SYSCTL_DECL(_vfs_zfs_vdev);
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/* Don't send BIO_FLUSH. */
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static int vdev_geom_bio_flush_disable;
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SYSCTL_INT(_vfs_zfs_vdev, OID_AUTO, bio_flush_disable, CTLFLAG_RWTUN,
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&vdev_geom_bio_flush_disable, 0, "Disable BIO_FLUSH");
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/* Don't send BIO_DELETE. */
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static int vdev_geom_bio_delete_disable;
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SYSCTL_INT(_vfs_zfs_vdev, OID_AUTO, bio_delete_disable, CTLFLAG_RWTUN,
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&vdev_geom_bio_delete_disable, 0, "Disable BIO_DELETE");
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/* Declare local functions */
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static void vdev_geom_detach(struct g_consumer *cp, boolean_t open_for_read);
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/*
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* Thread local storage used to indicate when a thread is probing geoms
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* for their guids. If NULL, this thread is not tasting geoms. If non NULL,
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* it is looking for a replacement for the vdev_t* that is its value.
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*/
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uint_t zfs_geom_probe_vdev_key;
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static void
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vdev_geom_set_physpath(vdev_t *vd, struct g_consumer *cp,
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boolean_t do_null_update)
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{
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boolean_t needs_update = B_FALSE;
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char *physpath;
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int error, physpath_len;
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physpath_len = MAXPATHLEN;
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physpath = g_malloc(physpath_len, M_WAITOK|M_ZERO);
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error = g_io_getattr("GEOM::physpath", cp, &physpath_len, physpath);
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if (error == 0) {
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char *old_physpath;
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/* g_topology lock ensures that vdev has not been closed */
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g_topology_assert();
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old_physpath = vd->vdev_physpath;
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vd->vdev_physpath = spa_strdup(physpath);
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if (old_physpath != NULL) {
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needs_update = (strcmp(old_physpath,
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vd->vdev_physpath) != 0);
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spa_strfree(old_physpath);
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} else
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needs_update = do_null_update;
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}
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g_free(physpath);
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/*
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* If the physical path changed, update the config.
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* Only request an update for previously unset physpaths if
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* requested by the caller.
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*/
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if (needs_update)
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spa_async_request(vd->vdev_spa, SPA_ASYNC_CONFIG_UPDATE);
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}
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static void
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vdev_geom_attrchanged(struct g_consumer *cp, const char *attr)
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{
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struct consumer_priv_t *priv;
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struct consumer_vdev_elem *elem;
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priv = (struct consumer_priv_t *)&cp->private;
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if (SLIST_EMPTY(priv))
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return;
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SLIST_FOREACH(elem, priv, elems) {
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vdev_t *vd = elem->vd;
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if (strcmp(attr, "GEOM::physpath") == 0) {
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vdev_geom_set_physpath(vd, cp, /* null_update */B_TRUE);
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return;
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}
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}
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}
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static void
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vdev_geom_resize(struct g_consumer *cp)
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{
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struct consumer_priv_t *priv;
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struct consumer_vdev_elem *elem;
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spa_t *spa;
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vdev_t *vd;
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priv = (struct consumer_priv_t *)&cp->private;
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if (SLIST_EMPTY(priv))
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return;
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SLIST_FOREACH(elem, priv, elems) {
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vd = elem->vd;
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if (vd->vdev_state != VDEV_STATE_HEALTHY)
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continue;
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spa = vd->vdev_spa;
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if (!spa->spa_autoexpand)
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continue;
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vdev_online(spa, vd->vdev_guid, ZFS_ONLINE_EXPAND, NULL);
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}
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}
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static void
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vdev_geom_orphan(struct g_consumer *cp)
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{
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struct consumer_priv_t *priv;
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// cppcheck-suppress uninitvar
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struct consumer_vdev_elem *elem;
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g_topology_assert();
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priv = (struct consumer_priv_t *)&cp->private;
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if (SLIST_EMPTY(priv))
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/* Vdev close in progress. Ignore the event. */
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return;
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/*
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* Orphan callbacks occur from the GEOM event thread.
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* Concurrent with this call, new I/O requests may be
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* working their way through GEOM about to find out
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* (only once executed by the g_down thread) that we've
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* been orphaned from our disk provider. These I/Os
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* must be retired before we can detach our consumer.
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* This is most easily achieved by acquiring the
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* SPA ZIO configuration lock as a writer, but doing
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* so with the GEOM topology lock held would cause
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* a lock order reversal. Instead, rely on the SPA's
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* async removal support to invoke a close on this
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* vdev once it is safe to do so.
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*/
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SLIST_FOREACH(elem, priv, elems) {
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// cppcheck-suppress uninitvar
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vdev_t *vd = elem->vd;
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vd->vdev_remove_wanted = B_TRUE;
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spa_async_request(vd->vdev_spa, SPA_ASYNC_REMOVE);
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}
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}
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static struct g_consumer *
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vdev_geom_attach(struct g_provider *pp, vdev_t *vd, boolean_t sanity)
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{
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struct g_geom *gp;
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struct g_consumer *cp;
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int error;
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g_topology_assert();
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ZFS_LOG(1, "Attaching to %s.", pp->name);
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if (sanity) {
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if (pp->sectorsize > VDEV_PAD_SIZE || !ISP2(pp->sectorsize)) {
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ZFS_LOG(1, "Failing attach of %s. "
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"Incompatible sectorsize %d\n",
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pp->name, pp->sectorsize);
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return (NULL);
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} else if (pp->mediasize < SPA_MINDEVSIZE) {
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ZFS_LOG(1, "Failing attach of %s. "
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"Incompatible mediasize %ju\n",
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pp->name, pp->mediasize);
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return (NULL);
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}
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}
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/* Do we have geom already? No? Create one. */
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LIST_FOREACH(gp, &zfs_vdev_class.geom, geom) {
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if (gp->flags & G_GEOM_WITHER)
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continue;
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if (strcmp(gp->name, "zfs::vdev") != 0)
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continue;
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break;
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}
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if (gp == NULL) {
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gp = g_new_geomf(&zfs_vdev_class, "zfs::vdev");
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gp->orphan = vdev_geom_orphan;
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gp->attrchanged = vdev_geom_attrchanged;
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gp->resize = vdev_geom_resize;
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cp = g_new_consumer(gp);
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error = g_attach(cp, pp);
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if (error != 0) {
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ZFS_LOG(1, "%s(%d): g_attach failed: %d\n", __func__,
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__LINE__, error);
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vdev_geom_detach(cp, B_FALSE);
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return (NULL);
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}
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error = g_access(cp, 1, 0, 1);
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if (error != 0) {
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ZFS_LOG(1, "%s(%d): g_access failed: %d\n", __func__,
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__LINE__, error);
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vdev_geom_detach(cp, B_FALSE);
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return (NULL);
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}
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ZFS_LOG(1, "Created geom and consumer for %s.", pp->name);
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} else {
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/* Check if we are already connected to this provider. */
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LIST_FOREACH(cp, &gp->consumer, consumer) {
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if (cp->provider == pp) {
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ZFS_LOG(1, "Found consumer for %s.", pp->name);
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break;
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}
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}
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if (cp == NULL) {
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cp = g_new_consumer(gp);
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error = g_attach(cp, pp);
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if (error != 0) {
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ZFS_LOG(1, "%s(%d): g_attach failed: %d\n",
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__func__, __LINE__, error);
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vdev_geom_detach(cp, B_FALSE);
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return (NULL);
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}
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error = g_access(cp, 1, 0, 1);
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if (error != 0) {
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ZFS_LOG(1, "%s(%d): g_access failed: %d\n",
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__func__, __LINE__, error);
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vdev_geom_detach(cp, B_FALSE);
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return (NULL);
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}
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ZFS_LOG(1, "Created consumer for %s.", pp->name);
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} else {
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error = g_access(cp, 1, 0, 1);
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if (error != 0) {
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ZFS_LOG(1, "%s(%d): g_access failed: %d\n",
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__func__, __LINE__, error);
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return (NULL);
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}
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ZFS_LOG(1, "Used existing consumer for %s.", pp->name);
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}
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}
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if (vd != NULL)
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vd->vdev_tsd = cp;
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cp->flags |= G_CF_DIRECT_SEND | G_CF_DIRECT_RECEIVE;
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return (cp);
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}
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static void
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vdev_geom_detach(struct g_consumer *cp, boolean_t open_for_read)
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{
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struct g_geom *gp;
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g_topology_assert();
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ZFS_LOG(1, "Detaching from %s.",
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cp->provider && cp->provider->name ? cp->provider->name : "NULL");
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gp = cp->geom;
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if (open_for_read)
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g_access(cp, -1, 0, -1);
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/* Destroy consumer on last close. */
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if (cp->acr == 0 && cp->ace == 0) {
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if (cp->acw > 0)
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g_access(cp, 0, -cp->acw, 0);
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if (cp->provider != NULL) {
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ZFS_LOG(1, "Destroying consumer for %s.",
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cp->provider->name ? cp->provider->name : "NULL");
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g_detach(cp);
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}
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g_destroy_consumer(cp);
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}
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/* Destroy geom if there are no consumers left. */
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if (LIST_EMPTY(&gp->consumer)) {
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ZFS_LOG(1, "Destroyed geom %s.", gp->name);
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g_wither_geom(gp, ENXIO);
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}
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}
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static void
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vdev_geom_close_locked(vdev_t *vd)
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{
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struct g_consumer *cp;
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struct consumer_priv_t *priv;
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struct consumer_vdev_elem *elem, *elem_temp;
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g_topology_assert();
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cp = vd->vdev_tsd;
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vd->vdev_delayed_close = B_FALSE;
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if (cp == NULL)
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return;
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ZFS_LOG(1, "Closing access to %s.", cp->provider->name);
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KASSERT(cp->private != NULL, ("%s: cp->private is NULL", __func__));
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priv = (struct consumer_priv_t *)&cp->private;
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vd->vdev_tsd = NULL;
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SLIST_FOREACH_SAFE(elem, priv, elems, elem_temp) {
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if (elem->vd == vd) {
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SLIST_REMOVE(priv, elem, consumer_vdev_elem, elems);
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g_free(elem);
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}
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}
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vdev_geom_detach(cp, B_TRUE);
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}
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/*
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* Issue one or more bios to the vdev in parallel
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* cmds, datas, offsets, errors, and sizes are arrays of length ncmds. Each IO
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* operation is described by parallel entries from each array. There may be
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* more bios actually issued than entries in the array
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*/
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static void
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vdev_geom_io(struct g_consumer *cp, int *cmds, void **datas, off_t *offsets,
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off_t *sizes, int *errors, int ncmds)
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{
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struct bio **bios;
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uint8_t *p;
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off_t off, maxio, s, end;
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int i, n_bios, j;
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size_t bios_size;
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#if __FreeBSD_version > 1300130
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maxio = maxphys - (maxphys % cp->provider->sectorsize);
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#else
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maxio = MAXPHYS - (MAXPHYS % cp->provider->sectorsize);
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#endif
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n_bios = 0;
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/* How many bios are required for all commands ? */
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for (i = 0; i < ncmds; i++)
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n_bios += (sizes[i] + maxio - 1) / maxio;
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/* Allocate memory for the bios */
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bios_size = n_bios * sizeof (struct bio *);
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bios = kmem_zalloc(bios_size, KM_SLEEP);
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/* Prepare and issue all of the bios */
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for (i = j = 0; i < ncmds; i++) {
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off = offsets[i];
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p = datas[i];
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s = sizes[i];
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end = off + s;
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ASSERT0(off % cp->provider->sectorsize);
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ASSERT0(s % cp->provider->sectorsize);
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for (; off < end; off += maxio, p += maxio, s -= maxio, j++) {
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bios[j] = g_alloc_bio();
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bios[j]->bio_cmd = cmds[i];
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bios[j]->bio_done = NULL;
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bios[j]->bio_offset = off;
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bios[j]->bio_length = MIN(s, maxio);
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bios[j]->bio_data = (caddr_t)p;
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g_io_request(bios[j], cp);
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}
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}
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ASSERT3S(j, ==, n_bios);
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/* Wait for all of the bios to complete, and clean them up */
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for (i = j = 0; i < ncmds; i++) {
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off = offsets[i];
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s = sizes[i];
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end = off + s;
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for (; off < end; off += maxio, s -= maxio, j++) {
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errors[i] = biowait(bios[j], "vdev_geom_io") ||
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errors[i];
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g_destroy_bio(bios[j]);
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}
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}
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kmem_free(bios, bios_size);
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}
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/*
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* Read the vdev config from a device. Return the number of valid labels that
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* were found. The vdev config will be returned in config if and only if at
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* least one valid label was found.
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*/
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static int
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vdev_geom_read_config(struct g_consumer *cp, nvlist_t **configp)
|
|
{
|
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struct g_provider *pp;
|
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nvlist_t *config;
|
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vdev_phys_t *vdev_lists[VDEV_LABELS];
|
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char *buf;
|
|
size_t buflen;
|
|
uint64_t psize, state, txg;
|
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off_t offsets[VDEV_LABELS];
|
|
off_t size;
|
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off_t sizes[VDEV_LABELS];
|
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int cmds[VDEV_LABELS];
|
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int errors[VDEV_LABELS];
|
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int l, nlabels;
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g_topology_assert_not();
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pp = cp->provider;
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ZFS_LOG(1, "Reading config from %s...", pp->name);
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psize = pp->mediasize;
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psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
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size = sizeof (*vdev_lists[0]) + pp->sectorsize -
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((sizeof (*vdev_lists[0]) - 1) % pp->sectorsize) - 1;
|
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buflen = sizeof (vdev_lists[0]->vp_nvlist);
|
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|
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/* Create all of the IO requests */
|
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for (l = 0; l < VDEV_LABELS; l++) {
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cmds[l] = BIO_READ;
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vdev_lists[l] = kmem_alloc(size, KM_SLEEP);
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offsets[l] = vdev_label_offset(psize, l, 0) + VDEV_SKIP_SIZE;
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sizes[l] = size;
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errors[l] = 0;
|
|
ASSERT0(offsets[l] % pp->sectorsize);
|
|
}
|
|
|
|
/* Issue the IO requests */
|
|
vdev_geom_io(cp, cmds, (void**)vdev_lists, offsets, sizes, errors,
|
|
VDEV_LABELS);
|
|
|
|
/* Parse the labels */
|
|
config = *configp = NULL;
|
|
nlabels = 0;
|
|
for (l = 0; l < VDEV_LABELS; l++) {
|
|
if (errors[l] != 0)
|
|
continue;
|
|
|
|
buf = vdev_lists[l]->vp_nvlist;
|
|
|
|
if (nvlist_unpack(buf, buflen, &config, 0) != 0)
|
|
continue;
|
|
|
|
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE,
|
|
&state) != 0 || state > POOL_STATE_L2CACHE) {
|
|
nvlist_free(config);
|
|
continue;
|
|
}
|
|
|
|
if (state != POOL_STATE_SPARE &&
|
|
state != POOL_STATE_L2CACHE &&
|
|
(nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_TXG,
|
|
&txg) != 0 || txg == 0)) {
|
|
nvlist_free(config);
|
|
continue;
|
|
}
|
|
|
|
if (*configp != NULL)
|
|
nvlist_free(*configp);
|
|
*configp = config;
|
|
nlabels++;
|
|
}
|
|
|
|
/* Free the label storage */
|
|
for (l = 0; l < VDEV_LABELS; l++)
|
|
kmem_free(vdev_lists[l], size);
|
|
|
|
return (nlabels);
|
|
}
|
|
|
|
static void
|
|
resize_configs(nvlist_t ***configs, uint64_t *count, uint64_t id)
|
|
{
|
|
nvlist_t **new_configs;
|
|
uint64_t i;
|
|
|
|
if (id < *count)
|
|
return;
|
|
new_configs = kmem_zalloc((id + 1) * sizeof (nvlist_t *),
|
|
KM_SLEEP);
|
|
for (i = 0; i < *count; i++)
|
|
new_configs[i] = (*configs)[i];
|
|
if (*configs != NULL)
|
|
kmem_free(*configs, *count * sizeof (void *));
|
|
*configs = new_configs;
|
|
*count = id + 1;
|
|
}
|
|
|
|
static void
|
|
process_vdev_config(nvlist_t ***configs, uint64_t *count, nvlist_t *cfg,
|
|
const char *name, uint64_t *known_pool_guid)
|
|
{
|
|
nvlist_t *vdev_tree;
|
|
uint64_t pool_guid;
|
|
uint64_t vdev_guid;
|
|
uint64_t id, txg, known_txg;
|
|
const char *pname;
|
|
|
|
if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &pname) != 0 ||
|
|
strcmp(pname, name) != 0)
|
|
goto ignore;
|
|
|
|
if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &pool_guid) != 0)
|
|
goto ignore;
|
|
|
|
if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_TOP_GUID, &vdev_guid) != 0)
|
|
goto ignore;
|
|
|
|
if (nvlist_lookup_nvlist(cfg, ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0)
|
|
goto ignore;
|
|
|
|
if (nvlist_lookup_uint64(vdev_tree, ZPOOL_CONFIG_ID, &id) != 0)
|
|
goto ignore;
|
|
|
|
txg = fnvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_TXG);
|
|
|
|
if (*known_pool_guid != 0) {
|
|
if (pool_guid != *known_pool_guid)
|
|
goto ignore;
|
|
} else
|
|
*known_pool_guid = pool_guid;
|
|
|
|
resize_configs(configs, count, id);
|
|
|
|
if ((*configs)[id] != NULL) {
|
|
known_txg = fnvlist_lookup_uint64((*configs)[id],
|
|
ZPOOL_CONFIG_POOL_TXG);
|
|
if (txg <= known_txg)
|
|
goto ignore;
|
|
nvlist_free((*configs)[id]);
|
|
}
|
|
|
|
(*configs)[id] = cfg;
|
|
return;
|
|
|
|
ignore:
|
|
nvlist_free(cfg);
|
|
}
|
|
|
|
int
|
|
vdev_geom_read_pool_label(const char *name,
|
|
nvlist_t ***configs, uint64_t *count)
|
|
{
|
|
struct g_class *mp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp;
|
|
struct g_consumer *zcp;
|
|
nvlist_t *vdev_cfg;
|
|
uint64_t pool_guid;
|
|
int nlabels;
|
|
|
|
DROP_GIANT();
|
|
g_topology_lock();
|
|
|
|
*configs = NULL;
|
|
*count = 0;
|
|
pool_guid = 0;
|
|
LIST_FOREACH(mp, &g_classes, class) {
|
|
if (mp == &zfs_vdev_class)
|
|
continue;
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
if (gp->flags & G_GEOM_WITHER)
|
|
continue;
|
|
LIST_FOREACH(pp, &gp->provider, provider) {
|
|
if (pp->flags & G_PF_WITHER)
|
|
continue;
|
|
zcp = vdev_geom_attach(pp, NULL, B_TRUE);
|
|
if (zcp == NULL)
|
|
continue;
|
|
g_topology_unlock();
|
|
nlabels = vdev_geom_read_config(zcp, &vdev_cfg);
|
|
g_topology_lock();
|
|
vdev_geom_detach(zcp, B_TRUE);
|
|
if (nlabels == 0)
|
|
continue;
|
|
ZFS_LOG(1, "successfully read vdev config");
|
|
|
|
process_vdev_config(configs, count,
|
|
vdev_cfg, name, &pool_guid);
|
|
}
|
|
}
|
|
}
|
|
g_topology_unlock();
|
|
PICKUP_GIANT();
|
|
|
|
return (*count > 0 ? 0 : ENOENT);
|
|
}
|
|
|
|
enum match {
|
|
NO_MATCH = 0, /* No matching labels found */
|
|
TOPGUID_MATCH = 1, /* Labels match top guid, not vdev guid */
|
|
ZERO_MATCH = 1, /* Should never be returned */
|
|
ONE_MATCH = 2, /* 1 label matching the vdev_guid */
|
|
TWO_MATCH = 3, /* 2 label matching the vdev_guid */
|
|
THREE_MATCH = 4, /* 3 label matching the vdev_guid */
|
|
FULL_MATCH = 5 /* all labels match the vdev_guid */
|
|
};
|
|
|
|
static enum match
|
|
vdev_attach_ok(vdev_t *vd, struct g_provider *pp)
|
|
{
|
|
nvlist_t *config;
|
|
uint64_t pool_guid, top_guid, vdev_guid;
|
|
struct g_consumer *cp;
|
|
int nlabels;
|
|
|
|
cp = vdev_geom_attach(pp, NULL, B_TRUE);
|
|
if (cp == NULL) {
|
|
ZFS_LOG(1, "Unable to attach tasting instance to %s.",
|
|
pp->name);
|
|
return (NO_MATCH);
|
|
}
|
|
g_topology_unlock();
|
|
nlabels = vdev_geom_read_config(cp, &config);
|
|
g_topology_lock();
|
|
vdev_geom_detach(cp, B_TRUE);
|
|
if (nlabels == 0) {
|
|
ZFS_LOG(1, "Unable to read config from %s.", pp->name);
|
|
return (NO_MATCH);
|
|
}
|
|
|
|
pool_guid = 0;
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &pool_guid);
|
|
top_guid = 0;
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_TOP_GUID, &top_guid);
|
|
vdev_guid = 0;
|
|
(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_GUID, &vdev_guid);
|
|
nvlist_free(config);
|
|
|
|
/*
|
|
* Check that the label's pool guid matches the desired guid.
|
|
* Inactive spares and L2ARCs do not have any pool guid in the label.
|
|
*/
|
|
if (pool_guid != 0 && pool_guid != spa_guid(vd->vdev_spa)) {
|
|
ZFS_LOG(1, "pool guid mismatch for provider %s: %ju != %ju.",
|
|
pp->name,
|
|
(uintmax_t)spa_guid(vd->vdev_spa), (uintmax_t)pool_guid);
|
|
return (NO_MATCH);
|
|
}
|
|
|
|
/*
|
|
* Check that the label's vdev guid matches the desired guid.
|
|
* The second condition handles possible race on vdev detach, when
|
|
* remaining vdev receives GUID of destroyed top level mirror vdev.
|
|
*/
|
|
if (vdev_guid == vd->vdev_guid) {
|
|
ZFS_LOG(1, "guids match for provider %s.", pp->name);
|
|
return (ZERO_MATCH + nlabels);
|
|
} else if (top_guid == vd->vdev_guid && vd == vd->vdev_top) {
|
|
ZFS_LOG(1, "top vdev guid match for provider %s.", pp->name);
|
|
return (TOPGUID_MATCH);
|
|
}
|
|
ZFS_LOG(1, "vdev guid mismatch for provider %s: %ju != %ju.",
|
|
pp->name, (uintmax_t)vd->vdev_guid, (uintmax_t)vdev_guid);
|
|
return (NO_MATCH);
|
|
}
|
|
|
|
static struct g_consumer *
|
|
vdev_geom_attach_by_guids(vdev_t *vd)
|
|
{
|
|
struct g_class *mp;
|
|
struct g_geom *gp;
|
|
struct g_provider *pp, *best_pp;
|
|
struct g_consumer *cp;
|
|
const char *vdpath;
|
|
enum match match, best_match;
|
|
|
|
g_topology_assert();
|
|
|
|
vdpath = vd->vdev_path + sizeof ("/dev/") - 1;
|
|
cp = NULL;
|
|
best_pp = NULL;
|
|
best_match = NO_MATCH;
|
|
LIST_FOREACH(mp, &g_classes, class) {
|
|
if (mp == &zfs_vdev_class)
|
|
continue;
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
if (gp->flags & G_GEOM_WITHER)
|
|
continue;
|
|
LIST_FOREACH(pp, &gp->provider, provider) {
|
|
match = vdev_attach_ok(vd, pp);
|
|
if (match > best_match) {
|
|
best_match = match;
|
|
best_pp = pp;
|
|
} else if (match == best_match) {
|
|
if (strcmp(pp->name, vdpath) == 0) {
|
|
best_pp = pp;
|
|
}
|
|
}
|
|
if (match == FULL_MATCH)
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (best_pp) {
|
|
cp = vdev_geom_attach(best_pp, vd, B_TRUE);
|
|
if (cp == NULL) {
|
|
printf("ZFS WARNING: Unable to attach to %s.\n",
|
|
best_pp->name);
|
|
}
|
|
}
|
|
return (cp);
|
|
}
|
|
|
|
static struct g_consumer *
|
|
vdev_geom_open_by_guids(vdev_t *vd)
|
|
{
|
|
struct g_consumer *cp;
|
|
char *buf;
|
|
size_t len;
|
|
|
|
g_topology_assert();
|
|
|
|
ZFS_LOG(1, "Searching by guids [%ju:%ju].",
|
|
(uintmax_t)spa_guid(vd->vdev_spa), (uintmax_t)vd->vdev_guid);
|
|
cp = vdev_geom_attach_by_guids(vd);
|
|
if (cp != NULL) {
|
|
len = strlen(cp->provider->name) + strlen("/dev/") + 1;
|
|
buf = kmem_alloc(len, KM_SLEEP);
|
|
|
|
snprintf(buf, len, "/dev/%s", cp->provider->name);
|
|
spa_strfree(vd->vdev_path);
|
|
vd->vdev_path = buf;
|
|
|
|
ZFS_LOG(1, "Attach by guid [%ju:%ju] succeeded, provider %s.",
|
|
(uintmax_t)spa_guid(vd->vdev_spa),
|
|
(uintmax_t)vd->vdev_guid, cp->provider->name);
|
|
} else {
|
|
ZFS_LOG(1, "Search by guid [%ju:%ju] failed.",
|
|
(uintmax_t)spa_guid(vd->vdev_spa),
|
|
(uintmax_t)vd->vdev_guid);
|
|
}
|
|
|
|
return (cp);
|
|
}
|
|
|
|
static struct g_consumer *
|
|
vdev_geom_open_by_path(vdev_t *vd, int check_guid)
|
|
{
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
|
|
g_topology_assert();
|
|
|
|
cp = NULL;
|
|
pp = g_provider_by_name(vd->vdev_path + sizeof ("/dev/") - 1);
|
|
if (pp != NULL) {
|
|
ZFS_LOG(1, "Found provider by name %s.", vd->vdev_path);
|
|
if (!check_guid || vdev_attach_ok(vd, pp) == FULL_MATCH)
|
|
cp = vdev_geom_attach(pp, vd, B_FALSE);
|
|
}
|
|
|
|
return (cp);
|
|
}
|
|
|
|
static int
|
|
vdev_geom_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
|
|
uint64_t *logical_ashift, uint64_t *physical_ashift)
|
|
{
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
int error, has_trim;
|
|
uint16_t rate;
|
|
|
|
/*
|
|
* Set the TLS to indicate downstack that we
|
|
* should not access zvols
|
|
*/
|
|
VERIFY0(tsd_set(zfs_geom_probe_vdev_key, vd));
|
|
|
|
/*
|
|
* We must have a pathname, and it must be absolute.
|
|
*/
|
|
if (vd->vdev_path == NULL || strncmp(vd->vdev_path, "/dev/", 5) != 0) {
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL;
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Reopen the device if it's not currently open. Otherwise,
|
|
* just update the physical size of the device.
|
|
*/
|
|
if ((cp = vd->vdev_tsd) != NULL) {
|
|
ASSERT(vd->vdev_reopening);
|
|
goto skip_open;
|
|
}
|
|
|
|
DROP_GIANT();
|
|
g_topology_lock();
|
|
error = 0;
|
|
|
|
if (vd->vdev_spa->spa_is_splitting ||
|
|
((vd->vdev_prevstate == VDEV_STATE_UNKNOWN &&
|
|
(vd->vdev_spa->spa_load_state == SPA_LOAD_NONE ||
|
|
vd->vdev_spa->spa_load_state == SPA_LOAD_CREATE)))) {
|
|
/*
|
|
* We are dealing with a vdev that hasn't been previously
|
|
* opened (since boot), and we are not loading an
|
|
* existing pool configuration. This looks like a
|
|
* vdev add operation to a new or existing pool.
|
|
* Assume the user really wants to do this, and find
|
|
* GEOM provider by its name, ignoring GUID mismatches.
|
|
*
|
|
* XXPOLICY: It would be safer to only allow a device
|
|
* that is unlabeled or labeled but missing
|
|
* GUID information to be opened in this fashion,
|
|
* unless we are doing a split, in which case we
|
|
* should allow any guid.
|
|
*/
|
|
cp = vdev_geom_open_by_path(vd, 0);
|
|
} else {
|
|
/*
|
|
* Try using the recorded path for this device, but only
|
|
* accept it if its label data contains the expected GUIDs.
|
|
*/
|
|
cp = vdev_geom_open_by_path(vd, 1);
|
|
if (cp == NULL) {
|
|
/*
|
|
* The device at vd->vdev_path doesn't have the
|
|
* expected GUIDs. The disks might have merely
|
|
* moved around so try all other GEOM providers
|
|
* to find one with the right GUIDs.
|
|
*/
|
|
cp = vdev_geom_open_by_guids(vd);
|
|
}
|
|
}
|
|
|
|
/* Clear the TLS now that tasting is done */
|
|
VERIFY0(tsd_set(zfs_geom_probe_vdev_key, NULL));
|
|
|
|
if (cp == NULL) {
|
|
ZFS_LOG(1, "Vdev %s not found.", vd->vdev_path);
|
|
error = ENOENT;
|
|
} else {
|
|
struct consumer_priv_t *priv;
|
|
struct consumer_vdev_elem *elem;
|
|
int spamode;
|
|
|
|
priv = (struct consumer_priv_t *)&cp->private;
|
|
if (cp->private == NULL)
|
|
SLIST_INIT(priv);
|
|
elem = g_malloc(sizeof (*elem), M_WAITOK|M_ZERO);
|
|
elem->vd = vd;
|
|
SLIST_INSERT_HEAD(priv, elem, elems);
|
|
|
|
spamode = spa_mode(vd->vdev_spa);
|
|
if (cp->provider->sectorsize > VDEV_PAD_SIZE ||
|
|
!ISP2(cp->provider->sectorsize)) {
|
|
ZFS_LOG(1, "Provider %s has unsupported sectorsize.",
|
|
cp->provider->name);
|
|
|
|
vdev_geom_close_locked(vd);
|
|
error = EINVAL;
|
|
cp = NULL;
|
|
} else if (cp->acw == 0 && (spamode & FWRITE) != 0) {
|
|
int i;
|
|
|
|
for (i = 0; i < 5; i++) {
|
|
error = g_access(cp, 0, 1, 0);
|
|
if (error == 0)
|
|
break;
|
|
g_topology_unlock();
|
|
tsleep(vd, 0, "vdev", hz / 2);
|
|
g_topology_lock();
|
|
}
|
|
if (error != 0) {
|
|
printf("ZFS WARNING: Unable to open %s for "
|
|
"writing (error=%d).\n",
|
|
cp->provider->name, error);
|
|
vdev_geom_close_locked(vd);
|
|
cp = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Fetch initial physical path information for this device. */
|
|
if (cp != NULL) {
|
|
vdev_geom_attrchanged(cp, "GEOM::physpath");
|
|
|
|
/* Set other GEOM characteristics */
|
|
vdev_geom_set_physpath(vd, cp, /* do_null_update */B_FALSE);
|
|
}
|
|
|
|
g_topology_unlock();
|
|
PICKUP_GIANT();
|
|
if (cp == NULL) {
|
|
vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED;
|
|
vdev_dbgmsg(vd, "vdev_geom_open: failed to open [error=%d]",
|
|
error);
|
|
return (error);
|
|
}
|
|
skip_open:
|
|
pp = cp->provider;
|
|
|
|
/*
|
|
* Determine the actual size of the device.
|
|
*/
|
|
*max_psize = *psize = pp->mediasize;
|
|
|
|
/*
|
|
* Determine the device's minimum transfer size and preferred
|
|
* transfer size.
|
|
*/
|
|
*logical_ashift = highbit(MAX(pp->sectorsize, SPA_MINBLOCKSIZE)) - 1;
|
|
*physical_ashift = 0;
|
|
if (pp->stripesize && pp->stripesize > (1 << *logical_ashift) &&
|
|
ISP2(pp->stripesize) && pp->stripeoffset == 0)
|
|
*physical_ashift = highbit(pp->stripesize) - 1;
|
|
|
|
/*
|
|
* Clear the nowritecache settings, so that on a vdev_reopen()
|
|
* we will try again.
|
|
*/
|
|
vd->vdev_nowritecache = B_FALSE;
|
|
|
|
/* Inform the ZIO pipeline that we are non-rotational. */
|
|
error = g_getattr("GEOM::rotation_rate", cp, &rate);
|
|
if (error == 0 && rate == DISK_RR_NON_ROTATING)
|
|
vd->vdev_nonrot = B_TRUE;
|
|
else
|
|
vd->vdev_nonrot = B_FALSE;
|
|
|
|
/* Set when device reports it supports TRIM. */
|
|
error = g_getattr("GEOM::candelete", cp, &has_trim);
|
|
vd->vdev_has_trim = (error == 0 && has_trim);
|
|
|
|
/* Set when device reports it supports secure TRIM. */
|
|
/* unavailable on FreeBSD */
|
|
vd->vdev_has_securetrim = B_FALSE;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_geom_close(vdev_t *vd)
|
|
{
|
|
struct g_consumer *cp;
|
|
boolean_t locked;
|
|
|
|
cp = vd->vdev_tsd;
|
|
|
|
DROP_GIANT();
|
|
locked = g_topology_locked();
|
|
if (!locked)
|
|
g_topology_lock();
|
|
|
|
if (!vd->vdev_reopening ||
|
|
(cp != NULL && ((cp->flags & G_CF_ORPHAN) != 0 ||
|
|
(cp->provider != NULL && cp->provider->error != 0))))
|
|
vdev_geom_close_locked(vd);
|
|
|
|
if (!locked)
|
|
g_topology_unlock();
|
|
PICKUP_GIANT();
|
|
}
|
|
|
|
static void
|
|
vdev_geom_io_intr(struct bio *bp)
|
|
{
|
|
vdev_t *vd;
|
|
zio_t *zio;
|
|
|
|
zio = bp->bio_caller1;
|
|
vd = zio->io_vd;
|
|
zio->io_error = bp->bio_error;
|
|
if (zio->io_error == 0 && bp->bio_resid != 0)
|
|
zio->io_error = SET_ERROR(EIO);
|
|
|
|
switch (zio->io_error) {
|
|
case ENOTSUP:
|
|
/*
|
|
* If we get ENOTSUP for BIO_FLUSH or BIO_DELETE we know
|
|
* that future attempts will never succeed. In this case
|
|
* we set a persistent flag so that we don't bother with
|
|
* requests in the future.
|
|
*/
|
|
switch (bp->bio_cmd) {
|
|
case BIO_FLUSH:
|
|
vd->vdev_nowritecache = B_TRUE;
|
|
break;
|
|
case BIO_DELETE:
|
|
break;
|
|
}
|
|
break;
|
|
case ENXIO:
|
|
if (!vd->vdev_remove_wanted) {
|
|
/*
|
|
* If provider's error is set we assume it is being
|
|
* removed.
|
|
*/
|
|
if (bp->bio_to->error != 0) {
|
|
vd->vdev_remove_wanted = B_TRUE;
|
|
spa_async_request(zio->io_spa,
|
|
SPA_ASYNC_REMOVE);
|
|
} else if (!vd->vdev_delayed_close) {
|
|
vd->vdev_delayed_close = B_TRUE;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We have to split bio freeing into two parts, because the ABD code
|
|
* cannot be called in this context and vdev_op_io_done is not called
|
|
* for ZIO_TYPE_IOCTL zio-s.
|
|
*/
|
|
if (zio->io_type != ZIO_TYPE_READ && zio->io_type != ZIO_TYPE_WRITE) {
|
|
g_destroy_bio(bp);
|
|
zio->io_bio = NULL;
|
|
}
|
|
zio_delay_interrupt(zio);
|
|
}
|
|
|
|
struct vdev_geom_check_unmapped_cb_state {
|
|
int pages;
|
|
uint_t end;
|
|
};
|
|
|
|
/*
|
|
* Callback to check the ABD segment size/alignment and count the pages.
|
|
* GEOM requires data buffer to look virtually contiguous. It means only
|
|
* the first page of the buffer may not start and only the last may not
|
|
* end on a page boundary. All other physical pages must be full.
|
|
*/
|
|
static int
|
|
vdev_geom_check_unmapped_cb(void *buf, size_t len, void *priv)
|
|
{
|
|
struct vdev_geom_check_unmapped_cb_state *s = priv;
|
|
vm_offset_t off = (vm_offset_t)buf & PAGE_MASK;
|
|
|
|
if (s->pages != 0 && off != 0)
|
|
return (1);
|
|
if (s->end != 0)
|
|
return (1);
|
|
s->end = (off + len) & PAGE_MASK;
|
|
s->pages += (off + len + PAGE_MASK) >> PAGE_SHIFT;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check whether we can use unmapped I/O for this ZIO on this device to
|
|
* avoid data copying between scattered and/or gang ABD buffer and linear.
|
|
*/
|
|
static int
|
|
vdev_geom_check_unmapped(zio_t *zio, struct g_consumer *cp)
|
|
{
|
|
struct vdev_geom_check_unmapped_cb_state s;
|
|
|
|
/* If unmapped I/O is administratively disabled, respect that. */
|
|
if (!unmapped_buf_allowed)
|
|
return (0);
|
|
|
|
/* If the buffer is already linear, then nothing to do here. */
|
|
if (abd_is_linear(zio->io_abd))
|
|
return (0);
|
|
|
|
/*
|
|
* If unmapped I/O is not supported by the GEOM provider,
|
|
* then we can't do anything and have to copy the data.
|
|
*/
|
|
if ((cp->provider->flags & G_PF_ACCEPT_UNMAPPED) == 0)
|
|
return (0);
|
|
|
|
/* Check the buffer chunks sizes/alignments and count pages. */
|
|
s.pages = s.end = 0;
|
|
if (abd_iterate_func(zio->io_abd, 0, zio->io_size,
|
|
vdev_geom_check_unmapped_cb, &s))
|
|
return (0);
|
|
return (s.pages);
|
|
}
|
|
|
|
/*
|
|
* Callback to translate the ABD segment into array of physical pages.
|
|
*/
|
|
static int
|
|
vdev_geom_fill_unmap_cb(void *buf, size_t len, void *priv)
|
|
{
|
|
struct bio *bp = priv;
|
|
vm_offset_t addr = (vm_offset_t)buf;
|
|
vm_offset_t end = addr + len;
|
|
|
|
if (bp->bio_ma_n == 0) {
|
|
bp->bio_ma_offset = addr & PAGE_MASK;
|
|
addr &= ~PAGE_MASK;
|
|
} else {
|
|
ASSERT0(P2PHASE(addr, PAGE_SIZE));
|
|
}
|
|
do {
|
|
bp->bio_ma[bp->bio_ma_n++] =
|
|
PHYS_TO_VM_PAGE(pmap_kextract(addr));
|
|
addr += PAGE_SIZE;
|
|
} while (addr < end);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
vdev_geom_io_start(zio_t *zio)
|
|
{
|
|
vdev_t *vd;
|
|
struct g_consumer *cp;
|
|
struct bio *bp;
|
|
|
|
vd = zio->io_vd;
|
|
|
|
switch (zio->io_type) {
|
|
case ZIO_TYPE_IOCTL:
|
|
/* XXPOLICY */
|
|
if (!vdev_readable(vd)) {
|
|
zio->io_error = SET_ERROR(ENXIO);
|
|
zio_interrupt(zio);
|
|
return;
|
|
} else {
|
|
switch (zio->io_cmd) {
|
|
case DKIOCFLUSHWRITECACHE:
|
|
if (zfs_nocacheflush ||
|
|
vdev_geom_bio_flush_disable)
|
|
break;
|
|
if (vd->vdev_nowritecache) {
|
|
zio->io_error = SET_ERROR(ENOTSUP);
|
|
break;
|
|
}
|
|
goto sendreq;
|
|
default:
|
|
zio->io_error = SET_ERROR(ENOTSUP);
|
|
}
|
|
}
|
|
|
|
zio_execute(zio);
|
|
return;
|
|
case ZIO_TYPE_TRIM:
|
|
if (!vdev_geom_bio_delete_disable) {
|
|
goto sendreq;
|
|
}
|
|
zio_execute(zio);
|
|
return;
|
|
default:
|
|
;
|
|
/* PASSTHROUGH --- placate compiler */
|
|
}
|
|
sendreq:
|
|
ASSERT(zio->io_type == ZIO_TYPE_READ ||
|
|
zio->io_type == ZIO_TYPE_WRITE ||
|
|
zio->io_type == ZIO_TYPE_TRIM ||
|
|
zio->io_type == ZIO_TYPE_IOCTL);
|
|
|
|
cp = vd->vdev_tsd;
|
|
if (cp == NULL) {
|
|
zio->io_error = SET_ERROR(ENXIO);
|
|
zio_interrupt(zio);
|
|
return;
|
|
}
|
|
bp = g_alloc_bio();
|
|
bp->bio_caller1 = zio;
|
|
switch (zio->io_type) {
|
|
case ZIO_TYPE_READ:
|
|
case ZIO_TYPE_WRITE:
|
|
zio->io_target_timestamp = zio_handle_io_delay(zio);
|
|
bp->bio_offset = zio->io_offset;
|
|
bp->bio_length = zio->io_size;
|
|
if (zio->io_type == ZIO_TYPE_READ)
|
|
bp->bio_cmd = BIO_READ;
|
|
else
|
|
bp->bio_cmd = BIO_WRITE;
|
|
|
|
/*
|
|
* If possible, represent scattered and/or gang ABD buffer to
|
|
* GEOM as an array of physical pages. It allows to satisfy
|
|
* requirement of virtually contiguous buffer without copying.
|
|
*/
|
|
int pgs = vdev_geom_check_unmapped(zio, cp);
|
|
if (pgs > 0) {
|
|
bp->bio_ma = malloc(sizeof (struct vm_page *) * pgs,
|
|
M_DEVBUF, M_WAITOK);
|
|
bp->bio_ma_n = 0;
|
|
bp->bio_ma_offset = 0;
|
|
abd_iterate_func(zio->io_abd, 0, zio->io_size,
|
|
vdev_geom_fill_unmap_cb, bp);
|
|
bp->bio_data = unmapped_buf;
|
|
bp->bio_flags |= BIO_UNMAPPED;
|
|
} else {
|
|
if (zio->io_type == ZIO_TYPE_READ) {
|
|
bp->bio_data = abd_borrow_buf(zio->io_abd,
|
|
zio->io_size);
|
|
} else {
|
|
bp->bio_data = abd_borrow_buf_copy(zio->io_abd,
|
|
zio->io_size);
|
|
}
|
|
}
|
|
break;
|
|
case ZIO_TYPE_TRIM:
|
|
bp->bio_cmd = BIO_DELETE;
|
|
bp->bio_data = NULL;
|
|
bp->bio_offset = zio->io_offset;
|
|
bp->bio_length = zio->io_size;
|
|
break;
|
|
case ZIO_TYPE_IOCTL:
|
|
bp->bio_cmd = BIO_FLUSH;
|
|
bp->bio_data = NULL;
|
|
bp->bio_offset = cp->provider->mediasize;
|
|
bp->bio_length = 0;
|
|
break;
|
|
default:
|
|
panic("invalid zio->io_type: %d\n", zio->io_type);
|
|
}
|
|
bp->bio_done = vdev_geom_io_intr;
|
|
zio->io_bio = bp;
|
|
|
|
g_io_request(bp, cp);
|
|
}
|
|
|
|
static void
|
|
vdev_geom_io_done(zio_t *zio)
|
|
{
|
|
struct bio *bp = zio->io_bio;
|
|
|
|
if (zio->io_type != ZIO_TYPE_READ && zio->io_type != ZIO_TYPE_WRITE) {
|
|
ASSERT3P(bp, ==, NULL);
|
|
return;
|
|
}
|
|
|
|
if (bp == NULL) {
|
|
ASSERT3S(zio->io_error, ==, ENXIO);
|
|
return;
|
|
}
|
|
|
|
if (bp->bio_ma != NULL) {
|
|
free(bp->bio_ma, M_DEVBUF);
|
|
} else {
|
|
if (zio->io_type == ZIO_TYPE_READ) {
|
|
abd_return_buf_copy(zio->io_abd, bp->bio_data,
|
|
zio->io_size);
|
|
} else {
|
|
abd_return_buf(zio->io_abd, bp->bio_data,
|
|
zio->io_size);
|
|
}
|
|
}
|
|
|
|
g_destroy_bio(bp);
|
|
zio->io_bio = NULL;
|
|
}
|
|
|
|
static void
|
|
vdev_geom_hold(vdev_t *vd)
|
|
{
|
|
}
|
|
|
|
static void
|
|
vdev_geom_rele(vdev_t *vd)
|
|
{
|
|
}
|
|
|
|
vdev_ops_t vdev_disk_ops = {
|
|
.vdev_op_init = NULL,
|
|
.vdev_op_fini = NULL,
|
|
.vdev_op_open = vdev_geom_open,
|
|
.vdev_op_close = vdev_geom_close,
|
|
.vdev_op_asize = vdev_default_asize,
|
|
.vdev_op_min_asize = vdev_default_min_asize,
|
|
.vdev_op_min_alloc = NULL,
|
|
.vdev_op_io_start = vdev_geom_io_start,
|
|
.vdev_op_io_done = vdev_geom_io_done,
|
|
.vdev_op_state_change = NULL,
|
|
.vdev_op_need_resilver = NULL,
|
|
.vdev_op_hold = vdev_geom_hold,
|
|
.vdev_op_rele = vdev_geom_rele,
|
|
.vdev_op_remap = NULL,
|
|
.vdev_op_xlate = vdev_default_xlate,
|
|
.vdev_op_rebuild_asize = NULL,
|
|
.vdev_op_metaslab_init = NULL,
|
|
.vdev_op_config_generate = NULL,
|
|
.vdev_op_nparity = NULL,
|
|
.vdev_op_ndisks = NULL,
|
|
.vdev_op_type = VDEV_TYPE_DISK, /* name of this vdev type */
|
|
.vdev_op_leaf = B_TRUE /* leaf vdev */
|
|
};
|