1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5bef6b7d2Swebaker * Common Development and Distribution License (the "License"). 6bef6b7d2Swebaker * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 22f13665b7Sbo zhou - Sun Microsystems - Beijing China * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 2397e81309SPrakash Surya * Copyright (c) 2012, 2015 by Delphix. All rights reserved. 24*295438baSHans Rosenfeld * Copyright 2016 Nexenta Systems, Inc. All rights reserved. 2539cddb10SJoshua M. Clulow * Copyright (c) 2013 Joyent, Inc. All rights reserved. 26fa9e4066Sahrens */ 27fa9e4066Sahrens 28fa9e4066Sahrens #include <sys/zfs_context.h> 29dcba9f3fSGeorge Wilson #include <sys/spa_impl.h> 30e7cbe64fSgw #include <sys/refcount.h> 31fa9e4066Sahrens #include <sys/vdev_disk.h> 32fa9e4066Sahrens #include <sys/vdev_impl.h> 33fa9e4066Sahrens #include <sys/fs/zfs.h> 34fa9e4066Sahrens #include <sys/zio.h> 35afefbcddSeschrock #include <sys/sunldi.h> 364263d13fSGeorge Wilson #include <sys/efi_partition.h> 3751ece835Seschrock #include <sys/fm/fs/zfs.h> 38fa9e4066Sahrens 39fa9e4066Sahrens /* 40fa9e4066Sahrens * Virtual device vector for disks. 41fa9e4066Sahrens */ 42fa9e4066Sahrens 43fa9e4066Sahrens extern ldi_ident_t zfs_li; 44fa9e4066Sahrens 4539cddb10SJoshua M. Clulow static void vdev_disk_close(vdev_t *); 4639cddb10SJoshua M. Clulow 4739cddb10SJoshua M. Clulow typedef struct vdev_disk_ldi_cb { 4839cddb10SJoshua M. Clulow list_node_t lcb_next; 4939cddb10SJoshua M. Clulow ldi_callback_id_t lcb_id; 5039cddb10SJoshua M. Clulow } vdev_disk_ldi_cb_t; 5139cddb10SJoshua M. Clulow 5239cddb10SJoshua M. Clulow static void 5339cddb10SJoshua M. Clulow vdev_disk_alloc(vdev_t *vd) 5439cddb10SJoshua M. Clulow { 5539cddb10SJoshua M. Clulow vdev_disk_t *dvd; 5639cddb10SJoshua M. Clulow 5739cddb10SJoshua M. Clulow dvd = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_disk_t), KM_SLEEP); 5839cddb10SJoshua M. Clulow /* 5939cddb10SJoshua M. Clulow * Create the LDI event callback list. 6039cddb10SJoshua M. Clulow */ 6139cddb10SJoshua M. Clulow list_create(&dvd->vd_ldi_cbs, sizeof (vdev_disk_ldi_cb_t), 6239cddb10SJoshua M. Clulow offsetof(vdev_disk_ldi_cb_t, lcb_next)); 6339cddb10SJoshua M. Clulow } 6439cddb10SJoshua M. Clulow 6539cddb10SJoshua M. Clulow static void 6639cddb10SJoshua M. Clulow vdev_disk_free(vdev_t *vd) 6739cddb10SJoshua M. Clulow { 6839cddb10SJoshua M. Clulow vdev_disk_t *dvd = vd->vdev_tsd; 6939cddb10SJoshua M. Clulow vdev_disk_ldi_cb_t *lcb; 7039cddb10SJoshua M. Clulow 7139cddb10SJoshua M. Clulow if (dvd == NULL) 7239cddb10SJoshua M. Clulow return; 7339cddb10SJoshua M. Clulow 7439cddb10SJoshua M. Clulow /* 7539cddb10SJoshua M. Clulow * We have already closed the LDI handle. Clean up the LDI event 7639cddb10SJoshua M. Clulow * callbacks and free vd->vdev_tsd. 7739cddb10SJoshua M. Clulow */ 7839cddb10SJoshua M. Clulow while ((lcb = list_head(&dvd->vd_ldi_cbs)) != NULL) { 7939cddb10SJoshua M. Clulow list_remove(&dvd->vd_ldi_cbs, lcb); 8039cddb10SJoshua M. Clulow (void) ldi_ev_remove_callbacks(lcb->lcb_id); 8139cddb10SJoshua M. Clulow kmem_free(lcb, sizeof (vdev_disk_ldi_cb_t)); 8239cddb10SJoshua M. Clulow } 8339cddb10SJoshua M. Clulow list_destroy(&dvd->vd_ldi_cbs); 8439cddb10SJoshua M. Clulow kmem_free(dvd, sizeof (vdev_disk_t)); 8539cddb10SJoshua M. Clulow vd->vdev_tsd = NULL; 8639cddb10SJoshua M. Clulow } 8739cddb10SJoshua M. Clulow 8839cddb10SJoshua M. Clulow /* ARGSUSED */ 8939cddb10SJoshua M. Clulow static int 9039cddb10SJoshua M. Clulow vdev_disk_off_notify(ldi_handle_t lh, ldi_ev_cookie_t ecookie, void *arg, 9139cddb10SJoshua M. Clulow void *ev_data) 9239cddb10SJoshua M. Clulow { 9339cddb10SJoshua M. Clulow vdev_t *vd = (vdev_t *)arg; 9439cddb10SJoshua M. Clulow vdev_disk_t *dvd = vd->vdev_tsd; 9539cddb10SJoshua M. Clulow 9639cddb10SJoshua M. Clulow /* 9739cddb10SJoshua M. Clulow * Ignore events other than offline. 9839cddb10SJoshua M. Clulow */ 9939cddb10SJoshua M. Clulow if (strcmp(ldi_ev_get_type(ecookie), LDI_EV_OFFLINE) != 0) 10039cddb10SJoshua M. Clulow return (LDI_EV_SUCCESS); 10139cddb10SJoshua M. Clulow 10239cddb10SJoshua M. Clulow /* 10339cddb10SJoshua M. Clulow * All LDI handles must be closed for the state change to succeed, so 10439cddb10SJoshua M. Clulow * call on vdev_disk_close() to do this. 10539cddb10SJoshua M. Clulow * 10639cddb10SJoshua M. Clulow * We inform vdev_disk_close that it is being called from offline 10739cddb10SJoshua M. Clulow * notify context so it will defer cleanup of LDI event callbacks and 10839cddb10SJoshua M. Clulow * freeing of vd->vdev_tsd to the offline finalize or a reopen. 10939cddb10SJoshua M. Clulow */ 11039cddb10SJoshua M. Clulow dvd->vd_ldi_offline = B_TRUE; 11139cddb10SJoshua M. Clulow vdev_disk_close(vd); 11239cddb10SJoshua M. Clulow 11339cddb10SJoshua M. Clulow /* 11439cddb10SJoshua M. Clulow * Now that the device is closed, request that the spa_async_thread 11539cddb10SJoshua M. Clulow * mark the device as REMOVED and notify FMA of the removal. 11639cddb10SJoshua M. Clulow */ 11739cddb10SJoshua M. Clulow zfs_post_remove(vd->vdev_spa, vd); 11839cddb10SJoshua M. Clulow vd->vdev_remove_wanted = B_TRUE; 11939cddb10SJoshua M. Clulow spa_async_request(vd->vdev_spa, SPA_ASYNC_REMOVE); 12039cddb10SJoshua M. Clulow 12139cddb10SJoshua M. Clulow return (LDI_EV_SUCCESS); 12239cddb10SJoshua M. Clulow } 12339cddb10SJoshua M. Clulow 12439cddb10SJoshua M. Clulow /* ARGSUSED */ 12539cddb10SJoshua M. Clulow static void 12639cddb10SJoshua M. Clulow vdev_disk_off_finalize(ldi_handle_t lh, ldi_ev_cookie_t ecookie, 12739cddb10SJoshua M. Clulow int ldi_result, void *arg, void *ev_data) 12839cddb10SJoshua M. Clulow { 12939cddb10SJoshua M. Clulow vdev_t *vd = (vdev_t *)arg; 13039cddb10SJoshua M. Clulow 13139cddb10SJoshua M. Clulow /* 13239cddb10SJoshua M. Clulow * Ignore events other than offline. 13339cddb10SJoshua M. Clulow */ 13439cddb10SJoshua M. Clulow if (strcmp(ldi_ev_get_type(ecookie), LDI_EV_OFFLINE) != 0) 13539cddb10SJoshua M. Clulow return; 13639cddb10SJoshua M. Clulow 13739cddb10SJoshua M. Clulow /* 13839cddb10SJoshua M. Clulow * We have already closed the LDI handle in notify. 13939cddb10SJoshua M. Clulow * Clean up the LDI event callbacks and free vd->vdev_tsd. 14039cddb10SJoshua M. Clulow */ 14139cddb10SJoshua M. Clulow vdev_disk_free(vd); 14239cddb10SJoshua M. Clulow 14339cddb10SJoshua M. Clulow /* 14439cddb10SJoshua M. Clulow * Request that the vdev be reopened if the offline state change was 14539cddb10SJoshua M. Clulow * unsuccessful. 14639cddb10SJoshua M. Clulow */ 14739cddb10SJoshua M. Clulow if (ldi_result != LDI_EV_SUCCESS) { 14839cddb10SJoshua M. Clulow vd->vdev_probe_wanted = B_TRUE; 14939cddb10SJoshua M. Clulow spa_async_request(vd->vdev_spa, SPA_ASYNC_PROBE); 15039cddb10SJoshua M. Clulow } 15139cddb10SJoshua M. Clulow } 15239cddb10SJoshua M. Clulow 15339cddb10SJoshua M. Clulow static ldi_ev_callback_t vdev_disk_off_callb = { 15439cddb10SJoshua M. Clulow .cb_vers = LDI_EV_CB_VERS, 15539cddb10SJoshua M. Clulow .cb_notify = vdev_disk_off_notify, 15639cddb10SJoshua M. Clulow .cb_finalize = vdev_disk_off_finalize 15739cddb10SJoshua M. Clulow }; 15839cddb10SJoshua M. Clulow 15939cddb10SJoshua M. Clulow /* ARGSUSED */ 16039cddb10SJoshua M. Clulow static void 16139cddb10SJoshua M. Clulow vdev_disk_dgrd_finalize(ldi_handle_t lh, ldi_ev_cookie_t ecookie, 16239cddb10SJoshua M. Clulow int ldi_result, void *arg, void *ev_data) 16339cddb10SJoshua M. Clulow { 16439cddb10SJoshua M. Clulow vdev_t *vd = (vdev_t *)arg; 16539cddb10SJoshua M. Clulow 16639cddb10SJoshua M. Clulow /* 16739cddb10SJoshua M. Clulow * Ignore events other than degrade. 16839cddb10SJoshua M. Clulow */ 16939cddb10SJoshua M. Clulow if (strcmp(ldi_ev_get_type(ecookie), LDI_EV_DEGRADE) != 0) 17039cddb10SJoshua M. Clulow return; 17139cddb10SJoshua M. Clulow 17239cddb10SJoshua M. Clulow /* 17339cddb10SJoshua M. Clulow * Degrade events always succeed. Mark the vdev as degraded. 17439cddb10SJoshua M. Clulow * This status is purely informative for the user. 17539cddb10SJoshua M. Clulow */ 17639cddb10SJoshua M. Clulow (void) vdev_degrade(vd->vdev_spa, vd->vdev_guid, 0); 17739cddb10SJoshua M. Clulow } 17839cddb10SJoshua M. Clulow 17939cddb10SJoshua M. Clulow static ldi_ev_callback_t vdev_disk_dgrd_callb = { 18039cddb10SJoshua M. Clulow .cb_vers = LDI_EV_CB_VERS, 18139cddb10SJoshua M. Clulow .cb_notify = NULL, 18239cddb10SJoshua M. Clulow .cb_finalize = vdev_disk_dgrd_finalize 18339cddb10SJoshua M. Clulow }; 18439cddb10SJoshua M. Clulow 185dcba9f3fSGeorge Wilson static void 186dcba9f3fSGeorge Wilson vdev_disk_hold(vdev_t *vd) 187dcba9f3fSGeorge Wilson { 188dcba9f3fSGeorge Wilson ddi_devid_t devid; 189dcba9f3fSGeorge Wilson char *minor; 190dcba9f3fSGeorge Wilson 191dcba9f3fSGeorge Wilson ASSERT(spa_config_held(vd->vdev_spa, SCL_STATE, RW_WRITER)); 192dcba9f3fSGeorge Wilson 193dcba9f3fSGeorge Wilson /* 194dcba9f3fSGeorge Wilson * We must have a pathname, and it must be absolute. 195dcba9f3fSGeorge Wilson */ 196dcba9f3fSGeorge Wilson if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') 197dcba9f3fSGeorge Wilson return; 198dcba9f3fSGeorge Wilson 199dcba9f3fSGeorge Wilson /* 200dcba9f3fSGeorge Wilson * Only prefetch path and devid info if the device has 201dcba9f3fSGeorge Wilson * never been opened. 202dcba9f3fSGeorge Wilson */ 203dcba9f3fSGeorge Wilson if (vd->vdev_tsd != NULL) 204dcba9f3fSGeorge Wilson return; 205dcba9f3fSGeorge Wilson 206dcba9f3fSGeorge Wilson if (vd->vdev_wholedisk == -1ULL) { 207dcba9f3fSGeorge Wilson size_t len = strlen(vd->vdev_path) + 3; 208dcba9f3fSGeorge Wilson char *buf = kmem_alloc(len, KM_SLEEP); 209dcba9f3fSGeorge Wilson 210dcba9f3fSGeorge Wilson (void) snprintf(buf, len, "%ss0", vd->vdev_path); 211dcba9f3fSGeorge Wilson 212dcba9f3fSGeorge Wilson (void) ldi_vp_from_name(buf, &vd->vdev_name_vp); 213dcba9f3fSGeorge Wilson kmem_free(buf, len); 214dcba9f3fSGeorge Wilson } 215dcba9f3fSGeorge Wilson 216dcba9f3fSGeorge Wilson if (vd->vdev_name_vp == NULL) 217dcba9f3fSGeorge Wilson (void) ldi_vp_from_name(vd->vdev_path, &vd->vdev_name_vp); 218dcba9f3fSGeorge Wilson 219dcba9f3fSGeorge Wilson if (vd->vdev_devid != NULL && 220dcba9f3fSGeorge Wilson ddi_devid_str_decode(vd->vdev_devid, &devid, &minor) == 0) { 221dcba9f3fSGeorge Wilson (void) ldi_vp_from_devid(devid, minor, &vd->vdev_devid_vp); 222dcba9f3fSGeorge Wilson ddi_devid_str_free(minor); 223dcba9f3fSGeorge Wilson ddi_devid_free(devid); 224dcba9f3fSGeorge Wilson } 225dcba9f3fSGeorge Wilson } 226dcba9f3fSGeorge Wilson 227dcba9f3fSGeorge Wilson static void 228dcba9f3fSGeorge Wilson vdev_disk_rele(vdev_t *vd) 229dcba9f3fSGeorge Wilson { 230dcba9f3fSGeorge Wilson ASSERT(spa_config_held(vd->vdev_spa, SCL_STATE, RW_WRITER)); 231dcba9f3fSGeorge Wilson 232dcba9f3fSGeorge Wilson if (vd->vdev_name_vp) { 233dcba9f3fSGeorge Wilson VN_RELE_ASYNC(vd->vdev_name_vp, 234dcba9f3fSGeorge Wilson dsl_pool_vnrele_taskq(vd->vdev_spa->spa_dsl_pool)); 235dcba9f3fSGeorge Wilson vd->vdev_name_vp = NULL; 236dcba9f3fSGeorge Wilson } 237dcba9f3fSGeorge Wilson if (vd->vdev_devid_vp) { 238dcba9f3fSGeorge Wilson VN_RELE_ASYNC(vd->vdev_devid_vp, 239dcba9f3fSGeorge Wilson dsl_pool_vnrele_taskq(vd->vdev_spa->spa_dsl_pool)); 240dcba9f3fSGeorge Wilson vd->vdev_devid_vp = NULL; 241dcba9f3fSGeorge Wilson } 242dcba9f3fSGeorge Wilson } 243dcba9f3fSGeorge Wilson 244a5b57771SDan McDonald /* 245a5b57771SDan McDonald * We want to be loud in DEBUG kernels when DKIOCGMEDIAINFOEXT fails, or when 246a5b57771SDan McDonald * even a fallback to DKIOCGMEDIAINFO fails. 247a5b57771SDan McDonald */ 248a5b57771SDan McDonald #ifdef DEBUG 249a5b57771SDan McDonald #define VDEV_DEBUG(...) cmn_err(CE_NOTE, __VA_ARGS__) 250a5b57771SDan McDonald #else 251a5b57771SDan McDonald #define VDEV_DEBUG(...) /* Nothing... */ 252a5b57771SDan McDonald #endif 253a5b57771SDan McDonald 254fa9e4066Sahrens static int 2554263d13fSGeorge Wilson vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize, 2564263d13fSGeorge Wilson uint64_t *ashift) 257fa9e4066Sahrens { 2588ad4d6ddSJeff Bonwick spa_t *spa = vd->vdev_spa; 25939cddb10SJoshua M. Clulow vdev_disk_t *dvd = vd->vdev_tsd; 26039cddb10SJoshua M. Clulow ldi_ev_cookie_t ecookie; 26139cddb10SJoshua M. Clulow vdev_disk_ldi_cb_t *lcb; 262a5b57771SDan McDonald union { 263a5b57771SDan McDonald struct dk_minfo_ext ude; 264a5b57771SDan McDonald struct dk_minfo ud; 265a5b57771SDan McDonald } dks; 266a5b57771SDan McDonald struct dk_minfo_ext *dkmext = &dks.ude; 267a5b57771SDan McDonald struct dk_minfo *dkm = &dks.ud; 2680a4e9518Sgw int error; 269e14bb325SJeff Bonwick dev_t dev; 270e14bb325SJeff Bonwick int otyp; 271fb02ae02SGeorge Wilson boolean_t validate_devid = B_FALSE; 272fb02ae02SGeorge Wilson ddi_devid_t devid; 273a5b57771SDan McDonald uint64_t capacity = 0, blksz = 0, pbsize; 274fa9e4066Sahrens 275fa9e4066Sahrens /* 276fa9e4066Sahrens * We must have a pathname, and it must be absolute. 277fa9e4066Sahrens */ 278fa9e4066Sahrens if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') { 279fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; 280be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 281fa9e4066Sahrens } 282fa9e4066Sahrens 283095bcd66SGeorge Wilson /* 284095bcd66SGeorge Wilson * Reopen the device if it's not currently open. Otherwise, 285095bcd66SGeorge Wilson * just update the physical size of the device. 286095bcd66SGeorge Wilson */ 28739cddb10SJoshua M. Clulow if (dvd != NULL) { 28839cddb10SJoshua M. Clulow if (dvd->vd_ldi_offline && dvd->vd_lh == NULL) { 28939cddb10SJoshua M. Clulow /* 29039cddb10SJoshua M. Clulow * If we are opening a device in its offline notify 29139cddb10SJoshua M. Clulow * context, the LDI handle was just closed. Clean 29239cddb10SJoshua M. Clulow * up the LDI event callbacks and free vd->vdev_tsd. 29339cddb10SJoshua M. Clulow */ 29439cddb10SJoshua M. Clulow vdev_disk_free(vd); 29539cddb10SJoshua M. Clulow } else { 29639cddb10SJoshua M. Clulow ASSERT(vd->vdev_reopening); 29739cddb10SJoshua M. Clulow goto skip_open; 29839cddb10SJoshua M. Clulow } 299095bcd66SGeorge Wilson } 300095bcd66SGeorge Wilson 30139cddb10SJoshua M. Clulow /* 30239cddb10SJoshua M. Clulow * Create vd->vdev_tsd. 30339cddb10SJoshua M. Clulow */ 30439cddb10SJoshua M. Clulow vdev_disk_alloc(vd); 30539cddb10SJoshua M. Clulow dvd = vd->vdev_tsd; 306fa9e4066Sahrens 307fa9e4066Sahrens /* 308fa9e4066Sahrens * When opening a disk device, we want to preserve the user's original 309fa9e4066Sahrens * intent. We always want to open the device by the path the user gave 3101724dc7bSJoshua M. Clulow * us, even if it is one of multiple paths to the same device. But we 311fa9e4066Sahrens * also want to be able to survive disks being removed/recabled. 312fa9e4066Sahrens * Therefore the sequence of opening devices is: 313fa9e4066Sahrens * 314afefbcddSeschrock * 1. Try opening the device by path. For legacy pools without the 315afefbcddSeschrock * 'whole_disk' property, attempt to fix the path by appending 's0'. 316fa9e4066Sahrens * 317fa9e4066Sahrens * 2. If the devid of the device matches the stored value, return 318fa9e4066Sahrens * success. 319fa9e4066Sahrens * 320fa9e4066Sahrens * 3. Otherwise, the device may have moved. Try opening the device 321fa9e4066Sahrens * by the devid instead. 322fa9e4066Sahrens */ 323fa9e4066Sahrens if (vd->vdev_devid != NULL) { 324fa9e4066Sahrens if (ddi_devid_str_decode(vd->vdev_devid, &dvd->vd_devid, 325fa9e4066Sahrens &dvd->vd_minor) != 0) { 326fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; 327be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 328fa9e4066Sahrens } 329fa9e4066Sahrens } 330fa9e4066Sahrens 331fa9e4066Sahrens error = EINVAL; /* presume failure */ 332fa9e4066Sahrens 333095bcd66SGeorge Wilson if (vd->vdev_path != NULL) { 334fa9e4066Sahrens 335afefbcddSeschrock if (vd->vdev_wholedisk == -1ULL) { 336afefbcddSeschrock size_t len = strlen(vd->vdev_path) + 3; 337afefbcddSeschrock char *buf = kmem_alloc(len, KM_SLEEP); 338afefbcddSeschrock 339afefbcddSeschrock (void) snprintf(buf, len, "%ss0", vd->vdev_path); 340afefbcddSeschrock 34139cddb10SJoshua M. Clulow error = ldi_open_by_name(buf, spa_mode(spa), kcred, 34239cddb10SJoshua M. Clulow &dvd->vd_lh, zfs_li); 34339cddb10SJoshua M. Clulow if (error == 0) { 344afefbcddSeschrock spa_strfree(vd->vdev_path); 345afefbcddSeschrock vd->vdev_path = buf; 346afefbcddSeschrock vd->vdev_wholedisk = 1ULL; 347afefbcddSeschrock } else { 348afefbcddSeschrock kmem_free(buf, len); 349afefbcddSeschrock } 350afefbcddSeschrock } 351fa9e4066Sahrens 35239cddb10SJoshua M. Clulow /* 35339cddb10SJoshua M. Clulow * If we have not yet opened the device, try to open it by the 35439cddb10SJoshua M. Clulow * specified path. 35539cddb10SJoshua M. Clulow */ 35639cddb10SJoshua M. Clulow if (error != 0) { 35739cddb10SJoshua M. Clulow error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), 35839cddb10SJoshua M. Clulow kcred, &dvd->vd_lh, zfs_li); 35939cddb10SJoshua M. Clulow } 360fa9e4066Sahrens 361fa9e4066Sahrens /* 362fa9e4066Sahrens * Compare the devid to the stored value. 363fa9e4066Sahrens */ 364fa9e4066Sahrens if (error == 0 && vd->vdev_devid != NULL && 365fa9e4066Sahrens ldi_get_devid(dvd->vd_lh, &devid) == 0) { 366fa9e4066Sahrens if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { 367be6fd75aSMatthew Ahrens error = SET_ERROR(EINVAL); 3688ad4d6ddSJeff Bonwick (void) ldi_close(dvd->vd_lh, spa_mode(spa), 3698ad4d6ddSJeff Bonwick kcred); 370fa9e4066Sahrens dvd->vd_lh = NULL; 371fa9e4066Sahrens } 372fa9e4066Sahrens ddi_devid_free(devid); 373fa9e4066Sahrens } 374afefbcddSeschrock 375afefbcddSeschrock /* 376afefbcddSeschrock * If we succeeded in opening the device, but 'vdev_wholedisk' 377afefbcddSeschrock * is not yet set, then this must be a slice. 378afefbcddSeschrock */ 379afefbcddSeschrock if (error == 0 && vd->vdev_wholedisk == -1ULL) 380afefbcddSeschrock vd->vdev_wholedisk = 0; 381fa9e4066Sahrens } 382fa9e4066Sahrens 383fa9e4066Sahrens /* 384fa9e4066Sahrens * If we were unable to open by path, or the devid check fails, open by 385fa9e4066Sahrens * devid instead. 386fa9e4066Sahrens */ 387fb02ae02SGeorge Wilson if (error != 0 && vd->vdev_devid != NULL) { 388fa9e4066Sahrens error = ldi_open_by_devid(dvd->vd_devid, dvd->vd_minor, 3898ad4d6ddSJeff Bonwick spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); 390fb02ae02SGeorge Wilson } 391fa9e4066Sahrens 3923d7072f8Seschrock /* 3933d7072f8Seschrock * If all else fails, then try opening by physical path (if available) 3943d7072f8Seschrock * or the logical path (if we failed due to the devid check). While not 3953d7072f8Seschrock * as reliable as the devid, this will give us something, and the higher 3963d7072f8Seschrock * level vdev validation will prevent us from opening the wrong device. 3973d7072f8Seschrock */ 3983d7072f8Seschrock if (error) { 399fb02ae02SGeorge Wilson if (vd->vdev_devid != NULL) 400fb02ae02SGeorge Wilson validate_devid = B_TRUE; 401fb02ae02SGeorge Wilson 4023d7072f8Seschrock if (vd->vdev_physpath != NULL && 403deb8317bSMark J Musante (dev = ddi_pathname_to_dev_t(vd->vdev_physpath)) != NODEV) 4048ad4d6ddSJeff Bonwick error = ldi_open_by_dev(&dev, OTYP_BLK, spa_mode(spa), 4053d7072f8Seschrock kcred, &dvd->vd_lh, zfs_li); 4063d7072f8Seschrock 4073d7072f8Seschrock /* 4083d7072f8Seschrock * Note that we don't support the legacy auto-wholedisk support 4093d7072f8Seschrock * as above. This hasn't been used in a very long time and we 4103d7072f8Seschrock * don't need to propagate its oddities to this edge condition. 4113d7072f8Seschrock */ 412095bcd66SGeorge Wilson if (error && vd->vdev_path != NULL) 4138ad4d6ddSJeff Bonwick error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), 4148ad4d6ddSJeff Bonwick kcred, &dvd->vd_lh, zfs_li); 4153d7072f8Seschrock } 4163d7072f8Seschrock 417e14bb325SJeff Bonwick if (error) { 418fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; 419fa9e4066Sahrens return (error); 420e14bb325SJeff Bonwick } 421fa9e4066Sahrens 422fb02ae02SGeorge Wilson /* 423fb02ae02SGeorge Wilson * Now that the device has been successfully opened, update the devid 424fb02ae02SGeorge Wilson * if necessary. 425fb02ae02SGeorge Wilson */ 426fb02ae02SGeorge Wilson if (validate_devid && spa_writeable(spa) && 427fb02ae02SGeorge Wilson ldi_get_devid(dvd->vd_lh, &devid) == 0) { 428fb02ae02SGeorge Wilson if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { 429fb02ae02SGeorge Wilson char *vd_devid; 430fb02ae02SGeorge Wilson 431fb02ae02SGeorge Wilson vd_devid = ddi_devid_str_encode(devid, dvd->vd_minor); 432fb02ae02SGeorge Wilson zfs_dbgmsg("vdev %s: update devid from %s, " 433fb02ae02SGeorge Wilson "to %s", vd->vdev_path, vd->vdev_devid, vd_devid); 434fb02ae02SGeorge Wilson spa_strfree(vd->vdev_devid); 435fb02ae02SGeorge Wilson vd->vdev_devid = spa_strdup(vd_devid); 436fb02ae02SGeorge Wilson ddi_devid_str_free(vd_devid); 437fb02ae02SGeorge Wilson } 438fb02ae02SGeorge Wilson ddi_devid_free(devid); 439fb02ae02SGeorge Wilson } 440fb02ae02SGeorge Wilson 4413d7072f8Seschrock /* 4423d7072f8Seschrock * Once a device is opened, verify that the physical device path (if 4433d7072f8Seschrock * available) is up to date. 4443d7072f8Seschrock */ 4453d7072f8Seschrock if (ldi_get_dev(dvd->vd_lh, &dev) == 0 && 4463d7072f8Seschrock ldi_get_otyp(dvd->vd_lh, &otyp) == 0) { 4470a4e9518Sgw char *physpath, *minorname; 4480a4e9518Sgw 4493d7072f8Seschrock physpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); 4503d7072f8Seschrock minorname = NULL; 4513d7072f8Seschrock if (ddi_dev_pathname(dev, otyp, physpath) == 0 && 4523d7072f8Seschrock ldi_get_minor_name(dvd->vd_lh, &minorname) == 0 && 4533d7072f8Seschrock (vd->vdev_physpath == NULL || 4543d7072f8Seschrock strcmp(vd->vdev_physpath, physpath) != 0)) { 4553d7072f8Seschrock if (vd->vdev_physpath) 4563d7072f8Seschrock spa_strfree(vd->vdev_physpath); 4573d7072f8Seschrock (void) strlcat(physpath, ":", MAXPATHLEN); 4583d7072f8Seschrock (void) strlcat(physpath, minorname, MAXPATHLEN); 4593d7072f8Seschrock vd->vdev_physpath = spa_strdup(physpath); 4603d7072f8Seschrock } 4613d7072f8Seschrock if (minorname) 4623d7072f8Seschrock kmem_free(minorname, strlen(minorname) + 1); 4633d7072f8Seschrock kmem_free(physpath, MAXPATHLEN); 4643d7072f8Seschrock } 4653d7072f8Seschrock 46639cddb10SJoshua M. Clulow /* 46739cddb10SJoshua M. Clulow * Register callbacks for the LDI offline event. 46839cddb10SJoshua M. Clulow */ 46939cddb10SJoshua M. Clulow if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_OFFLINE, &ecookie) == 47039cddb10SJoshua M. Clulow LDI_EV_SUCCESS) { 47139cddb10SJoshua M. Clulow lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); 47239cddb10SJoshua M. Clulow list_insert_tail(&dvd->vd_ldi_cbs, lcb); 47339cddb10SJoshua M. Clulow (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, 47439cddb10SJoshua M. Clulow &vdev_disk_off_callb, (void *) vd, &lcb->lcb_id); 47539cddb10SJoshua M. Clulow } 47639cddb10SJoshua M. Clulow 47739cddb10SJoshua M. Clulow /* 47839cddb10SJoshua M. Clulow * Register callbacks for the LDI degrade event. 47939cddb10SJoshua M. Clulow */ 48039cddb10SJoshua M. Clulow if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_DEGRADE, &ecookie) == 48139cddb10SJoshua M. Clulow LDI_EV_SUCCESS) { 48239cddb10SJoshua M. Clulow lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); 48339cddb10SJoshua M. Clulow list_insert_tail(&dvd->vd_ldi_cbs, lcb); 48439cddb10SJoshua M. Clulow (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, 48539cddb10SJoshua M. Clulow &vdev_disk_dgrd_callb, (void *) vd, &lcb->lcb_id); 48639cddb10SJoshua M. Clulow } 487095bcd66SGeorge Wilson skip_open: 488fa9e4066Sahrens /* 489fa9e4066Sahrens * Determine the actual size of the device. 490fa9e4066Sahrens */ 491fa9e4066Sahrens if (ldi_get_size(dvd->vd_lh, psize) != 0) { 492fa9e4066Sahrens vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; 493be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 494fa9e4066Sahrens } 495fa9e4066Sahrens 496a5b57771SDan McDonald *max_psize = *psize; 497a5b57771SDan McDonald 498ecc2d604Sbonwick /* 499ecc2d604Sbonwick * Determine the device's minimum transfer size. 500ecc2d604Sbonwick * If the ioctl isn't supported, assume DEV_BSIZE. 501ecc2d604Sbonwick */ 502a5b57771SDan McDonald if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFOEXT, 503a5b57771SDan McDonald (intptr_t)dkmext, FKIOCTL, kcred, NULL)) == 0) { 504a5b57771SDan McDonald capacity = dkmext->dki_capacity - 1; 505a5b57771SDan McDonald blksz = dkmext->dki_lbsize; 506a5b57771SDan McDonald pbsize = dkmext->dki_pbsize; 507a5b57771SDan McDonald } else if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFO, 508a5b57771SDan McDonald (intptr_t)dkm, FKIOCTL, kcred, NULL)) == 0) { 509a5b57771SDan McDonald VDEV_DEBUG( 510a5b57771SDan McDonald "vdev_disk_open(\"%s\"): fallback to DKIOCGMEDIAINFO\n", 511a5b57771SDan McDonald vd->vdev_path); 512a5b57771SDan McDonald capacity = dkm->dki_capacity - 1; 513a5b57771SDan McDonald blksz = dkm->dki_lbsize; 514a5b57771SDan McDonald pbsize = blksz; 515a5b57771SDan McDonald } else { 516a5b57771SDan McDonald VDEV_DEBUG("vdev_disk_open(\"%s\"): " 517a5b57771SDan McDonald "both DKIOCGMEDIAINFO{,EXT} calls failed, %d\n", 518a5b57771SDan McDonald vd->vdev_path, error); 519a5b57771SDan McDonald pbsize = DEV_BSIZE; 520a5b57771SDan McDonald } 521bef6b7d2Swebaker 522bf16b11eSMatthew Ahrens *ashift = highbit64(MAX(pbsize, SPA_MINBLOCKSIZE)) - 1; 523bef6b7d2Swebaker 5244263d13fSGeorge Wilson if (vd->vdev_wholedisk == 1) { 5254263d13fSGeorge Wilson int wce = 1; 5264263d13fSGeorge Wilson 527a5b57771SDan McDonald if (error == 0) { 528a5b57771SDan McDonald /* 529a5b57771SDan McDonald * If we have the capability to expand, we'd have 530a5b57771SDan McDonald * found out via success from DKIOCGMEDIAINFO{,EXT}. 531a5b57771SDan McDonald * Adjust max_psize upward accordingly since we know 532a5b57771SDan McDonald * we own the whole disk now. 533a5b57771SDan McDonald */ 534c39a2aaeSGeorge Wilson *max_psize = capacity * blksz; 535a5b57771SDan McDonald } 536a5b57771SDan McDonald 5374263d13fSGeorge Wilson /* 538a5b57771SDan McDonald * Since we own the whole disk, try to enable disk write 539a5b57771SDan McDonald * caching. We ignore errors because it's OK if we can't do it. 5404263d13fSGeorge Wilson */ 5414263d13fSGeorge Wilson (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce, 5424263d13fSGeorge Wilson FKIOCTL, kcred, NULL); 5434263d13fSGeorge Wilson } 5444263d13fSGeorge Wilson 545b468a217Seschrock /* 546b468a217Seschrock * Clear the nowritecache bit, so that on a vdev_reopen() we will 547b468a217Seschrock * try again. 548b468a217Seschrock */ 549b468a217Seschrock vd->vdev_nowritecache = B_FALSE; 550b468a217Seschrock 551fa9e4066Sahrens return (0); 552fa9e4066Sahrens } 553fa9e4066Sahrens 554fa9e4066Sahrens static void 555fa9e4066Sahrens vdev_disk_close(vdev_t *vd) 556fa9e4066Sahrens { 557fa9e4066Sahrens vdev_disk_t *dvd = vd->vdev_tsd; 558fa9e4066Sahrens 559095bcd66SGeorge Wilson if (vd->vdev_reopening || dvd == NULL) 560fa9e4066Sahrens return; 561fa9e4066Sahrens 56239cddb10SJoshua M. Clulow if (dvd->vd_minor != NULL) { 563fa9e4066Sahrens ddi_devid_str_free(dvd->vd_minor); 56439cddb10SJoshua M. Clulow dvd->vd_minor = NULL; 56539cddb10SJoshua M. Clulow } 566fa9e4066Sahrens 56739cddb10SJoshua M. Clulow if (dvd->vd_devid != NULL) { 568fa9e4066Sahrens ddi_devid_free(dvd->vd_devid); 56939cddb10SJoshua M. Clulow dvd->vd_devid = NULL; 57039cddb10SJoshua M. Clulow } 571fa9e4066Sahrens 57239cddb10SJoshua M. Clulow if (dvd->vd_lh != NULL) { 5738ad4d6ddSJeff Bonwick (void) ldi_close(dvd->vd_lh, spa_mode(vd->vdev_spa), kcred); 57439cddb10SJoshua M. Clulow dvd->vd_lh = NULL; 57539cddb10SJoshua M. Clulow } 576fa9e4066Sahrens 57798d1cbfeSGeorge Wilson vd->vdev_delayed_close = B_FALSE; 57839cddb10SJoshua M. Clulow /* 57939cddb10SJoshua M. Clulow * If we closed the LDI handle due to an offline notify from LDI, 58039cddb10SJoshua M. Clulow * don't free vd->vdev_tsd or unregister the callbacks here; 58139cddb10SJoshua M. Clulow * the offline finalize callback or a reopen will take care of it. 58239cddb10SJoshua M. Clulow */ 58339cddb10SJoshua M. Clulow if (dvd->vd_ldi_offline) 58439cddb10SJoshua M. Clulow return; 58539cddb10SJoshua M. Clulow 58639cddb10SJoshua M. Clulow vdev_disk_free(vd); 587fa9e4066Sahrens } 588fa9e4066Sahrens 589e7cbe64fSgw int 590810e43b2SBill Pijewski vdev_disk_physio(vdev_t *vd, caddr_t data, 591810e43b2SBill Pijewski size_t size, uint64_t offset, int flags, boolean_t isdump) 592810e43b2SBill Pijewski { 593810e43b2SBill Pijewski vdev_disk_t *dvd = vd->vdev_tsd; 594810e43b2SBill Pijewski 59539cddb10SJoshua M. Clulow /* 59639cddb10SJoshua M. Clulow * If the vdev is closed, it's likely in the REMOVED or FAULTED state. 59739cddb10SJoshua M. Clulow * Nothing to be done here but return failure. 59839cddb10SJoshua M. Clulow */ 59939cddb10SJoshua M. Clulow if (dvd == NULL || (dvd->vd_ldi_offline && dvd->vd_lh == NULL)) 60039cddb10SJoshua M. Clulow return (EIO); 60139cddb10SJoshua M. Clulow 602810e43b2SBill Pijewski ASSERT(vd->vdev_ops == &vdev_disk_ops); 603810e43b2SBill Pijewski 604810e43b2SBill Pijewski /* 605810e43b2SBill Pijewski * If in the context of an active crash dump, use the ldi_dump(9F) 606810e43b2SBill Pijewski * call instead of ldi_strategy(9F) as usual. 607810e43b2SBill Pijewski */ 608810e43b2SBill Pijewski if (isdump) { 609810e43b2SBill Pijewski ASSERT3P(dvd, !=, NULL); 610810e43b2SBill Pijewski return (ldi_dump(dvd->vd_lh, data, lbtodb(offset), 611810e43b2SBill Pijewski lbtodb(size))); 612810e43b2SBill Pijewski } 613810e43b2SBill Pijewski 614810e43b2SBill Pijewski return (vdev_disk_ldi_physio(dvd->vd_lh, data, size, offset, flags)); 615810e43b2SBill Pijewski } 616810e43b2SBill Pijewski 617810e43b2SBill Pijewski int 618810e43b2SBill Pijewski vdev_disk_ldi_physio(ldi_handle_t vd_lh, caddr_t data, 619810e43b2SBill Pijewski size_t size, uint64_t offset, int flags) 620e7cbe64fSgw { 621e7cbe64fSgw buf_t *bp; 622e7cbe64fSgw int error = 0; 623e7cbe64fSgw 624e7cbe64fSgw if (vd_lh == NULL) 625be6fd75aSMatthew Ahrens return (SET_ERROR(EINVAL)); 626e7cbe64fSgw 627e7cbe64fSgw ASSERT(flags & B_READ || flags & B_WRITE); 628e7cbe64fSgw 629e7cbe64fSgw bp = getrbuf(KM_SLEEP); 630e7cbe64fSgw bp->b_flags = flags | B_BUSY | B_NOCACHE | B_FAILFAST; 631e7cbe64fSgw bp->b_bcount = size; 632e7cbe64fSgw bp->b_un.b_addr = (void *)data; 633e7cbe64fSgw bp->b_lblkno = lbtodb(offset); 634e7cbe64fSgw bp->b_bufsize = size; 635e7cbe64fSgw 636e7cbe64fSgw error = ldi_strategy(vd_lh, bp); 637e7cbe64fSgw ASSERT(error == 0); 638e7cbe64fSgw if ((error = biowait(bp)) == 0 && bp->b_resid != 0) 639be6fd75aSMatthew Ahrens error = SET_ERROR(EIO); 640e7cbe64fSgw freerbuf(bp); 641e7cbe64fSgw 642e7cbe64fSgw return (error); 643e7cbe64fSgw } 644e7cbe64fSgw 645fa9e4066Sahrens static void 646fa9e4066Sahrens vdev_disk_io_intr(buf_t *bp) 647fa9e4066Sahrens { 64831d7e8faSGeorge Wilson vdev_buf_t *vb = (vdev_buf_t *)bp; 64931d7e8faSGeorge Wilson zio_t *zio = vb->vb_io; 650fa9e4066Sahrens 65151ece835Seschrock /* 65251ece835Seschrock * The rest of the zio stack only deals with EIO, ECKSUM, and ENXIO. 65351ece835Seschrock * Rather than teach the rest of the stack about other error 65451ece835Seschrock * possibilities (EFAULT, etc), we normalize the error value here. 65551ece835Seschrock */ 65651ece835Seschrock zio->io_error = (geterror(bp) != 0 ? EIO : 0); 65751ece835Seschrock 65851ece835Seschrock if (zio->io_error == 0 && bp->b_resid != 0) 659be6fd75aSMatthew Ahrens zio->io_error = SET_ERROR(EIO); 660fa9e4066Sahrens 66131d7e8faSGeorge Wilson kmem_free(vb, sizeof (vdev_buf_t)); 662fa9e4066Sahrens 66397e81309SPrakash Surya zio_delay_interrupt(zio); 664fa9e4066Sahrens } 665fa9e4066Sahrens 666f4a72450SJeff Bonwick static void 667f4a72450SJeff Bonwick vdev_disk_ioctl_free(zio_t *zio) 668f4a72450SJeff Bonwick { 669f4a72450SJeff Bonwick kmem_free(zio->io_vsd, sizeof (struct dk_callback)); 670f4a72450SJeff Bonwick } 671f4a72450SJeff Bonwick 67222fe2c88SJonathan Adams static const zio_vsd_ops_t vdev_disk_vsd_ops = { 67322fe2c88SJonathan Adams vdev_disk_ioctl_free, 67422fe2c88SJonathan Adams zio_vsd_default_cksum_report 67522fe2c88SJonathan Adams }; 67622fe2c88SJonathan Adams 677fa9e4066Sahrens static void 678fa9e4066Sahrens vdev_disk_ioctl_done(void *zio_arg, int error) 679fa9e4066Sahrens { 680fa9e4066Sahrens zio_t *zio = zio_arg; 681fa9e4066Sahrens 682fa9e4066Sahrens zio->io_error = error; 683fa9e4066Sahrens 684e05725b1Sbonwick zio_interrupt(zio); 685fa9e4066Sahrens } 686fa9e4066Sahrens 687738f37bcSGeorge Wilson static void 688fa9e4066Sahrens vdev_disk_io_start(zio_t *zio) 689fa9e4066Sahrens { 690fa9e4066Sahrens vdev_t *vd = zio->io_vd; 691fa9e4066Sahrens vdev_disk_t *dvd = vd->vdev_tsd; 69231d7e8faSGeorge Wilson vdev_buf_t *vb; 693e14bb325SJeff Bonwick struct dk_callback *dkc; 694fa9e4066Sahrens buf_t *bp; 695e14bb325SJeff Bonwick int error; 696fa9e4066Sahrens 69739cddb10SJoshua M. Clulow /* 69839cddb10SJoshua M. Clulow * If the vdev is closed, it's likely in the REMOVED or FAULTED state. 69939cddb10SJoshua M. Clulow * Nothing to be done here but return failure. 70039cddb10SJoshua M. Clulow */ 70139cddb10SJoshua M. Clulow if (dvd == NULL || (dvd->vd_ldi_offline && dvd->vd_lh == NULL)) { 70239cddb10SJoshua M. Clulow zio->io_error = ENXIO; 703738f37bcSGeorge Wilson zio_interrupt(zio); 704738f37bcSGeorge Wilson return; 70539cddb10SJoshua M. Clulow } 70639cddb10SJoshua M. Clulow 707fa9e4066Sahrens if (zio->io_type == ZIO_TYPE_IOCTL) { 708fa9e4066Sahrens /* XXPOLICY */ 7090a4e9518Sgw if (!vdev_readable(vd)) { 710be6fd75aSMatthew Ahrens zio->io_error = SET_ERROR(ENXIO); 711738f37bcSGeorge Wilson zio_interrupt(zio); 712738f37bcSGeorge Wilson return; 713fa9e4066Sahrens } 714fa9e4066Sahrens 715fa9e4066Sahrens switch (zio->io_cmd) { 716fa9e4066Sahrens 717fa9e4066Sahrens case DKIOCFLUSHWRITECACHE: 718fa9e4066Sahrens 719a2eea2e1Sahrens if (zfs_nocacheflush) 720a2eea2e1Sahrens break; 721a2eea2e1Sahrens 722b468a217Seschrock if (vd->vdev_nowritecache) { 723be6fd75aSMatthew Ahrens zio->io_error = SET_ERROR(ENOTSUP); 724b468a217Seschrock break; 725b468a217Seschrock } 726b468a217Seschrock 727e14bb325SJeff Bonwick zio->io_vsd = dkc = kmem_alloc(sizeof (*dkc), KM_SLEEP); 72822fe2c88SJonathan Adams zio->io_vsd_ops = &vdev_disk_vsd_ops; 729e14bb325SJeff Bonwick 730e14bb325SJeff Bonwick dkc->dkc_callback = vdev_disk_ioctl_done; 731e14bb325SJeff Bonwick dkc->dkc_flag = FLUSH_VOLATILE; 732e14bb325SJeff Bonwick dkc->dkc_cookie = zio; 733fa9e4066Sahrens 734fa9e4066Sahrens error = ldi_ioctl(dvd->vd_lh, zio->io_cmd, 735e14bb325SJeff Bonwick (uintptr_t)dkc, FKIOCTL, kcred, NULL); 736fa9e4066Sahrens 737fa9e4066Sahrens if (error == 0) { 738fa9e4066Sahrens /* 739fa9e4066Sahrens * The ioctl will be done asychronously, 740fa9e4066Sahrens * and will call vdev_disk_ioctl_done() 741fa9e4066Sahrens * upon completion. 742fa9e4066Sahrens */ 743738f37bcSGeorge Wilson return; 744e05725b1Sbonwick } 745e05725b1Sbonwick 746fa9e4066Sahrens zio->io_error = error; 747b468a217Seschrock 748fa9e4066Sahrens break; 749fa9e4066Sahrens 750fa9e4066Sahrens default: 751be6fd75aSMatthew Ahrens zio->io_error = SET_ERROR(ENOTSUP); 752fa9e4066Sahrens } 753fa9e4066Sahrens 754738f37bcSGeorge Wilson zio_execute(zio); 755738f37bcSGeorge Wilson return; 756fa9e4066Sahrens } 757fa9e4066Sahrens 758f693d300SSteven Hartland ASSERT(zio->io_type == ZIO_TYPE_READ || zio->io_type == ZIO_TYPE_WRITE); 75997e81309SPrakash Surya zio->io_target_timestamp = zio_handle_io_delay(zio); 760f693d300SSteven Hartland 76131d7e8faSGeorge Wilson vb = kmem_alloc(sizeof (vdev_buf_t), KM_SLEEP); 762fa9e4066Sahrens 76331d7e8faSGeorge Wilson vb->vb_io = zio; 76431d7e8faSGeorge Wilson bp = &vb->vb_buf; 765fa9e4066Sahrens 766fa9e4066Sahrens bioinit(bp); 767e14bb325SJeff Bonwick bp->b_flags = B_BUSY | B_NOCACHE | 7688956713aSEric Schrock (zio->io_type == ZIO_TYPE_READ ? B_READ : B_WRITE); 7698956713aSEric Schrock if (!(zio->io_flags & (ZIO_FLAG_IO_RETRY | ZIO_FLAG_TRYHARD))) 7708956713aSEric Schrock bp->b_flags |= B_FAILFAST; 771fa9e4066Sahrens bp->b_bcount = zio->io_size; 772fa9e4066Sahrens bp->b_un.b_addr = zio->io_data; 773fa9e4066Sahrens bp->b_lblkno = lbtodb(zio->io_offset); 774fa9e4066Sahrens bp->b_bufsize = zio->io_size; 775fa9e4066Sahrens bp->b_iodone = (int (*)())vdev_disk_io_intr; 776fa9e4066Sahrens 777fa9e4066Sahrens /* ldi_strategy() will return non-zero only on programming errors */ 778e14bb325SJeff Bonwick VERIFY(ldi_strategy(dvd->vd_lh, bp) == 0); 779fa9e4066Sahrens } 780fa9e4066Sahrens 781e14bb325SJeff Bonwick static void 782fa9e4066Sahrens vdev_disk_io_done(zio_t *zio) 783fa9e4066Sahrens { 784e14bb325SJeff Bonwick vdev_t *vd = zio->io_vd; 785ea8dc4b6Seschrock 7863d7072f8Seschrock /* 7873d7072f8Seschrock * If the device returned EIO, then attempt a DKIOCSTATE ioctl to see if 7883d7072f8Seschrock * the device has been removed. If this is the case, then we trigger an 7890a4e9518Sgw * asynchronous removal of the device. Otherwise, probe the device and 7901f7ad2e1Sgw * make sure it's still accessible. 7913d7072f8Seschrock */ 7921d713200SEric Schrock if (zio->io_error == EIO && !vd->vdev_remove_wanted) { 7930a4e9518Sgw vdev_disk_t *dvd = vd->vdev_tsd; 794e14bb325SJeff Bonwick int state = DKIO_NONE; 7950a4e9518Sgw 796e14bb325SJeff Bonwick if (ldi_ioctl(dvd->vd_lh, DKIOCSTATE, (intptr_t)&state, 797e14bb325SJeff Bonwick FKIOCTL, kcred, NULL) == 0 && state != DKIO_INSERTED) { 7981d713200SEric Schrock /* 7991d713200SEric Schrock * We post the resource as soon as possible, instead of 8001d713200SEric Schrock * when the async removal actually happens, because the 8011d713200SEric Schrock * DE is using this information to discard previous I/O 8021d713200SEric Schrock * errors. 8031d713200SEric Schrock */ 8041d713200SEric Schrock zfs_post_remove(zio->io_spa, vd); 8053d7072f8Seschrock vd->vdev_remove_wanted = B_TRUE; 8063d7072f8Seschrock spa_async_request(zio->io_spa, SPA_ASYNC_REMOVE); 80798d1cbfeSGeorge Wilson } else if (!vd->vdev_delayed_close) { 80898d1cbfeSGeorge Wilson vd->vdev_delayed_close = B_TRUE; 8093d7072f8Seschrock } 8103d7072f8Seschrock } 811fa9e4066Sahrens } 812fa9e4066Sahrens 813fa9e4066Sahrens vdev_ops_t vdev_disk_ops = { 814fa9e4066Sahrens vdev_disk_open, 815fa9e4066Sahrens vdev_disk_close, 816fa9e4066Sahrens vdev_default_asize, 817fa9e4066Sahrens vdev_disk_io_start, 818fa9e4066Sahrens vdev_disk_io_done, 819fa9e4066Sahrens NULL, 820dcba9f3fSGeorge Wilson vdev_disk_hold, 821dcba9f3fSGeorge Wilson vdev_disk_rele, 822fa9e4066Sahrens VDEV_TYPE_DISK, /* name of this vdev type */ 823fa9e4066Sahrens B_TRUE /* leaf vdev */ 824fa9e4066Sahrens }; 825e7cbe64fSgw 826e7cbe64fSgw /* 827051aabe6Staylor * Given the root disk device devid or pathname, read the label from 828051aabe6Staylor * the device, and construct a configuration nvlist. 829e7cbe64fSgw */ 830f940fbb1SLin Ling int 831f940fbb1SLin Ling vdev_disk_read_rootlabel(char *devpath, char *devid, nvlist_t **config) 832e7cbe64fSgw { 833e7cbe64fSgw ldi_handle_t vd_lh; 834e7cbe64fSgw vdev_label_t *label; 835e7cbe64fSgw uint64_t s, size; 836e7cbe64fSgw int l; 837051aabe6Staylor ddi_devid_t tmpdevid; 838f4565e39SLin Ling int error = -1; 839051aabe6Staylor char *minor_name; 840e7cbe64fSgw 841e7cbe64fSgw /* 842e7cbe64fSgw * Read the device label and build the nvlist. 843e7cbe64fSgw */ 844f4565e39SLin Ling if (devid != NULL && ddi_devid_str_decode(devid, &tmpdevid, 845051aabe6Staylor &minor_name) == 0) { 846051aabe6Staylor error = ldi_open_by_devid(tmpdevid, minor_name, 8478ad4d6ddSJeff Bonwick FREAD, kcred, &vd_lh, zfs_li); 848051aabe6Staylor ddi_devid_free(tmpdevid); 849051aabe6Staylor ddi_devid_str_free(minor_name); 850051aabe6Staylor } 851051aabe6Staylor 852f4565e39SLin Ling if (error && (error = ldi_open_by_name(devpath, FREAD, kcred, &vd_lh, 853f4565e39SLin Ling zfs_li))) 854f940fbb1SLin Ling return (error); 855e7cbe64fSgw 856bf82a41bSeschrock if (ldi_get_size(vd_lh, &s)) { 857bf82a41bSeschrock (void) ldi_close(vd_lh, FREAD, kcred); 858be6fd75aSMatthew Ahrens return (SET_ERROR(EIO)); 859bf82a41bSeschrock } 860e7cbe64fSgw 861e7cbe64fSgw size = P2ALIGN_TYPED(s, sizeof (vdev_label_t), uint64_t); 862e7cbe64fSgw label = kmem_alloc(sizeof (vdev_label_t), KM_SLEEP); 863e7cbe64fSgw 86417f1e64aSEric Taylor *config = NULL; 865e7cbe64fSgw for (l = 0; l < VDEV_LABELS; l++) { 866e7cbe64fSgw uint64_t offset, state, txg = 0; 867e7cbe64fSgw 868e7cbe64fSgw /* read vdev label */ 869e7cbe64fSgw offset = vdev_label_offset(size, l, 0); 870810e43b2SBill Pijewski if (vdev_disk_ldi_physio(vd_lh, (caddr_t)label, 8712264ca7fSLin Ling VDEV_SKIP_SIZE + VDEV_PHYS_SIZE, offset, B_READ) != 0) 872e7cbe64fSgw continue; 873e7cbe64fSgw 874e7cbe64fSgw if (nvlist_unpack(label->vl_vdev_phys.vp_nvlist, 875f940fbb1SLin Ling sizeof (label->vl_vdev_phys.vp_nvlist), config, 0) != 0) { 876f940fbb1SLin Ling *config = NULL; 877e7cbe64fSgw continue; 878e7cbe64fSgw } 879e7cbe64fSgw 880f940fbb1SLin Ling if (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_STATE, 881e7cbe64fSgw &state) != 0 || state >= POOL_STATE_DESTROYED) { 882f940fbb1SLin Ling nvlist_free(*config); 883f940fbb1SLin Ling *config = NULL; 884e7cbe64fSgw continue; 885e7cbe64fSgw } 886e7cbe64fSgw 887f940fbb1SLin Ling if (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_TXG, 888e7cbe64fSgw &txg) != 0 || txg == 0) { 889f940fbb1SLin Ling nvlist_free(*config); 890f940fbb1SLin Ling *config = NULL; 891e7cbe64fSgw continue; 892e7cbe64fSgw } 893e7cbe64fSgw 894e7cbe64fSgw break; 895e7cbe64fSgw } 896e7cbe64fSgw 897e7cbe64fSgw kmem_free(label, sizeof (vdev_label_t)); 898bf82a41bSeschrock (void) ldi_close(vd_lh, FREAD, kcred); 89917f1e64aSEric Taylor if (*config == NULL) 900be6fd75aSMatthew Ahrens error = SET_ERROR(EIDRM); 901bf82a41bSeschrock 902f940fbb1SLin Ling return (error); 903e7cbe64fSgw } 904