/* * The device associated with the given vdev (either by devid or physical path) * has been added to the system. If 'isdisk' is set, then we only attempt a * replacement if it's a whole disk. This also implies that we should label the * disk first. * * First, we attempt to online the device (making sure to undo any spare * operation when finished). If this succeeds, then we're done. If it fails, * and the new state is VDEV_CANT_OPEN, it indicates that the device was opened, * but that the label was not what we expected. If the 'autoreplace' property * is not set, then we relabel the disk (if specified), and attempt a 'zpool * replace'. If the online is successful, but the new state is something else * (REMOVED or FAULTED), it indicates that we're out of sync or in some sort of * race, and we should avoid attempting to relabel the disk. */ static void zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t isdisk) { char *path; vdev_state_t newstate; nvlist_t *nvroot, *newvd; uint64_t wholedisk = 0ULL; uint64_t offline = 0ULL; char *physpath = NULL; char rawpath[PATH_MAX], fullpath[PATH_MAX]; size_t len; if (nvlist_lookup_string(vdev, ZPOOL_CONFIG_PATH, &path) != 0) return; (void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_PHYS_PATH, &physpath); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, &wholedisk); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_OFFLINE, &offline); /* * We should have a way to online a device by guid. With the current * interface, we are forced to chop off the 's0' for whole disks. */ (void) strlcpy(fullpath, path, sizeof (fullpath)); if (wholedisk) fullpath[strlen(fullpath) - 2] = '\0'; /* * Attempt to online the device. It would be nice to online this by * GUID, but the current interface only supports lookup by path. */ if (offline || (zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE, &newstate) == 0 && (newstate == VDEV_STATE_HEALTHY || newstate == VDEV_STATE_DEGRADED))) return; /* * If the pool doesn't have the autoreplace property set, then attempt a * true online (without the unspare flag), which will trigger a FMA * fault. */ if (!zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOREPLACE, NULL) || (isdisk && !wholedisk)) { (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } if (isdisk) { /* * If this is a request to label a whole disk, then attempt to * write out the label. Before we can label the disk, we need * access to a raw node. Ideally, we'd like to walk the devinfo * tree and find a raw node from the corresponding parent node. * This is overly complicated, and since we know how we labeled * this device in the first place, we know it's save to switch * from /dev/dsk to /dev/rdsk and append the backup slice. * * If any part of this process fails, then do a force online to * trigger a ZFS fault for the device (and any hot spare * replacement). */ if (strncmp(path, "/dev/dsk/", 9) != 0) { (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } (void) strlcpy(rawpath, path + 9, sizeof (rawpath)); len = strlen(rawpath); rawpath[len - 2] = '\0'; if (zpool_label_disk(g_zfshdl, zhp, rawpath) != 0) { (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } } /* * Cosntruct the root vdev to pass to zpool_vdev_attach(). While adding * the entire vdev structure is harmless, we construct a reduced set of * path/physpath/wholedisk to keep it simple. */ if (nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) != 0) return; if (nvlist_alloc(&newvd, NV_UNIQUE_NAME, 0) != 0) { nvlist_free(nvroot); return; } if (nvlist_add_string(newvd, ZPOOL_CONFIG_TYPE, VDEV_TYPE_DISK) != 0 || nvlist_add_string(newvd, ZPOOL_CONFIG_PATH, path) != 0 || (physpath != NULL && nvlist_add_string(newvd, ZPOOL_CONFIG_PHYS_PATH, physpath) != 0) || nvlist_add_uint64(newvd, ZPOOL_CONFIG_WHOLE_DISK, wholedisk) != 0 || nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) != 0 || nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, &newvd, 1) != 0) { nvlist_free(newvd); nvlist_free(nvroot); return; } nvlist_free(newvd); (void) zpool_vdev_attach(zhp, fullpath, path, nvroot, B_TRUE); nvlist_free(nvroot); }
/* * The device associated with the given vdev (either by devid or physical path) * has been added to the system. If 'isdisk' is set, then we only attempt a * replacement if it's a whole disk. This also implies that we should label the * disk first. * * First, we attempt to online the device (making sure to undo any spare * operation when finished). If this succeeds, then we're done. If it fails, * and the new state is VDEV_CANT_OPEN, it indicates that the device was opened, * but that the label was not what we expected. If the 'autoreplace' property * is enabled, then we relabel the disk (if specified), and attempt a 'zpool * replace'. If the online is successful, but the new state is something else * (REMOVED or FAULTED), it indicates that we're out of sync or in some sort of * race, and we should avoid attempting to relabel the disk. * * Also can arrive here from a ESC_ZFS_VDEV_CHECK event */ static void zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled) { char *path; vdev_state_t newstate; nvlist_t *nvroot, *newvd; pendingdev_t *device; uint64_t wholedisk = 0ULL; uint64_t offline = 0ULL; uint64_t guid = 0ULL; char *physpath = NULL, *new_devid = NULL, *enc_sysfs_path = NULL; char rawpath[PATH_MAX], fullpath[PATH_MAX]; char devpath[PATH_MAX]; int ret; int is_dm = 0; int is_sd = 0; uint_t c; vdev_stat_t *vs; if (nvlist_lookup_string(vdev, ZPOOL_CONFIG_PATH, &path) != 0) return; /* Skip healthy disks */ verify(nvlist_lookup_uint64_array(vdev, ZPOOL_CONFIG_VDEV_STATS, (uint64_t **)&vs, &c) == 0); if (vs->vs_state == VDEV_STATE_HEALTHY) { zed_log_msg(LOG_INFO, "%s: %s is already healthy, skip it.", __func__, path); return; } (void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_PHYS_PATH, &physpath); (void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, &enc_sysfs_path); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, &wholedisk); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_OFFLINE, &offline); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_GUID, &guid); if (offline) return; /* don't intervene if it was taken offline */ is_dm = zfs_dev_is_dm(path); zed_log_msg(LOG_INFO, "zfs_process_add: pool '%s' vdev '%s', phys '%s'" " wholedisk %d, dm %d (%llu)", zpool_get_name(zhp), path, physpath ? physpath : "NULL", wholedisk, is_dm, (long long unsigned int)guid); /* * The VDEV guid is preferred for identification (gets passed in path) */ if (guid != 0) { (void) snprintf(fullpath, sizeof (fullpath), "%llu", (long long unsigned int)guid); } else { /* * otherwise use path sans partition suffix for whole disks */ (void) strlcpy(fullpath, path, sizeof (fullpath)); if (wholedisk) { char *spath = zfs_strip_partition(fullpath); if (!spath) { zed_log_msg(LOG_INFO, "%s: Can't alloc", __func__); return; } (void) strlcpy(fullpath, spath, sizeof (fullpath)); free(spath); } } /* * Attempt to online the device. */ if (zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE, &newstate) == 0 && (newstate == VDEV_STATE_HEALTHY || newstate == VDEV_STATE_DEGRADED)) { zed_log_msg(LOG_INFO, " zpool_vdev_online: vdev %s is %s", fullpath, (newstate == VDEV_STATE_HEALTHY) ? "HEALTHY" : "DEGRADED"); return; } /* * vdev_id alias rule for using scsi_debug devices (FMA automated * testing) */ if (physpath != NULL && strcmp("scsidebug", physpath) == 0) is_sd = 1; /* * If the pool doesn't have the autoreplace property set, then use * vdev online to trigger a FMA fault by posting an ereport. */ if (!zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOREPLACE, NULL) || !(wholedisk || is_dm) || (physpath == NULL)) { (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); zed_log_msg(LOG_INFO, "Pool's autoreplace is not enabled or " "not a whole disk for '%s'", fullpath); return; } /* * Convert physical path into its current device node. Rawpath * needs to be /dev/disk/by-vdev for a scsi_debug device since * /dev/disk/by-path will not be present. */ (void) snprintf(rawpath, sizeof (rawpath), "%s%s", is_sd ? DEV_BYVDEV_PATH : DEV_BYPATH_PATH, physpath); if (realpath(rawpath, devpath) == NULL && !is_dm) { zed_log_msg(LOG_INFO, " realpath: %s failed (%s)", rawpath, strerror(errno)); (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); zed_log_msg(LOG_INFO, " zpool_vdev_online: %s FORCEFAULT (%s)", fullpath, libzfs_error_description(g_zfshdl)); return; } /* Only autoreplace bad disks */ if ((vs->vs_state != VDEV_STATE_DEGRADED) && (vs->vs_state != VDEV_STATE_FAULTED) && (vs->vs_state != VDEV_STATE_CANT_OPEN)) { return; } nvlist_lookup_string(vdev, "new_devid", &new_devid); if (is_dm) { /* Don't label device mapper or multipath disks. */ } else if (!labeled) { /* * we're auto-replacing a raw disk, so label it first */ char *leafname; /* * If this is a request to label a whole disk, then attempt to * write out the label. Before we can label the disk, we need * to map the physical string that was matched on to the under * lying device node. * * If any part of this process fails, then do a force online * to trigger a ZFS fault for the device (and any hot spare * replacement). */ leafname = strrchr(devpath, '/') + 1; /* * If this is a request to label a whole disk, then attempt to * write out the label. */ if (zpool_label_disk(g_zfshdl, zhp, leafname) != 0) { zed_log_msg(LOG_INFO, " zpool_label_disk: could not " "label '%s' (%s)", leafname, libzfs_error_description(g_zfshdl)); (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } /* * The disk labeling is asynchronous on Linux. Just record * this label request and return as there will be another * disk add event for the partition after the labeling is * completed. */ device = malloc(sizeof (pendingdev_t)); (void) strlcpy(device->pd_physpath, physpath, sizeof (device->pd_physpath)); list_insert_tail(&g_device_list, device); zed_log_msg(LOG_INFO, " zpool_label_disk: async '%s' (%llu)", leafname, (u_longlong_t)guid); return; /* resumes at EC_DEV_ADD.ESC_DISK for partition */ } else /* labeled */ { boolean_t found = B_FALSE; /* * match up with request above to label the disk */ for (device = list_head(&g_device_list); device != NULL; device = list_next(&g_device_list, device)) { if (strcmp(physpath, device->pd_physpath) == 0) { list_remove(&g_device_list, device); free(device); found = B_TRUE; break; } zed_log_msg(LOG_INFO, "zpool_label_disk: %s != %s", physpath, device->pd_physpath); } if (!found) { /* unexpected partition slice encountered */ zed_log_msg(LOG_INFO, "labeled disk %s unexpected here", fullpath); (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } zed_log_msg(LOG_INFO, " zpool_label_disk: resume '%s' (%llu)", physpath, (u_longlong_t)guid); (void) snprintf(devpath, sizeof (devpath), "%s%s", DEV_BYID_PATH, new_devid); } /* * Construct the root vdev to pass to zpool_vdev_attach(). While adding * the entire vdev structure is harmless, we construct a reduced set of * path/physpath/wholedisk to keep it simple. */ if (nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: nvlist_alloc out of memory"); return; } if (nvlist_alloc(&newvd, NV_UNIQUE_NAME, 0) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: nvlist_alloc out of memory"); nvlist_free(nvroot); return; } if (nvlist_add_string(newvd, ZPOOL_CONFIG_TYPE, VDEV_TYPE_DISK) != 0 || nvlist_add_string(newvd, ZPOOL_CONFIG_PATH, path) != 0 || nvlist_add_string(newvd, ZPOOL_CONFIG_DEVID, new_devid) != 0 || (physpath != NULL && nvlist_add_string(newvd, ZPOOL_CONFIG_PHYS_PATH, physpath) != 0) || (enc_sysfs_path != NULL && nvlist_add_string(newvd, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, enc_sysfs_path) != 0) || nvlist_add_uint64(newvd, ZPOOL_CONFIG_WHOLE_DISK, wholedisk) != 0 || nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) != 0 || nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, &newvd, 1) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: unable to add nvlist pairs"); nvlist_free(newvd); nvlist_free(nvroot); return; } nvlist_free(newvd); /* * Wait for udev to verify the links exist, then auto-replace * the leaf disk at same physical location. */ if (zpool_label_disk_wait(path, 3000) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: expected replacement " "disk %s is missing", path); nvlist_free(nvroot); return; } ret = zpool_vdev_attach(zhp, fullpath, path, nvroot, B_TRUE); zed_log_msg(LOG_INFO, " zpool_vdev_replace: %s with %s (%s)", fullpath, path, (ret == 0) ? "no errors" : libzfs_error_description(g_zfshdl)); nvlist_free(nvroot); }
/* * The device associated with the given vdev (either by devid or physical path) * has been added to the system. If 'isdisk' is set, then we only attempt a * replacement if it's a whole disk. This also implies that we should label the * disk first. * * First, we attempt to online the device (making sure to undo any spare * operation when finished). If this succeeds, then we're done. If it fails, * and the new state is VDEV_CANT_OPEN, it indicates that the device was opened, * but that the label was not what we expected. If the 'autoreplace' property * is not set, then we relabel the disk (if specified), and attempt a 'zpool * replace'. If the online is successful, but the new state is something else * (REMOVED or FAULTED), it indicates that we're out of sync or in some sort of * race, and we should avoid attempting to relabel the disk. * * Also can arrive here from a ESC_ZFS_VDEV_CHECK event */ static void zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled) { char *path; vdev_state_t newstate; nvlist_t *nvroot, *newvd; pendingdev_t *device; uint64_t wholedisk = 0ULL; uint64_t offline = 0ULL; uint64_t guid = 0ULL; char *physpath = NULL, *new_devid = NULL; char rawpath[PATH_MAX], fullpath[PATH_MAX]; char devpath[PATH_MAX]; int ret; if (nvlist_lookup_string(vdev, ZPOOL_CONFIG_PATH, &path) != 0) return; (void) nvlist_lookup_string(vdev, ZPOOL_CONFIG_PHYS_PATH, &physpath); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, &wholedisk); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_OFFLINE, &offline); (void) nvlist_lookup_uint64(vdev, ZPOOL_CONFIG_GUID, &guid); if (offline) return; /* don't intervene if it was taken offline */ zed_log_msg(LOG_INFO, "zfs_process_add: pool '%s' vdev '%s' (%llu)", zpool_get_name(zhp), path, (long long unsigned int)guid); /* * The VDEV guid is preferred for identification (gets passed in path) */ if (guid != 0) { (void) snprintf(fullpath, sizeof (fullpath), "%llu", (long long unsigned int)guid); } else { /* * otherwise use path sans partition suffix for whole disks */ (void) strlcpy(fullpath, path, sizeof (fullpath)); if (wholedisk) { char *spath = zfs_strip_partition(g_zfshdl, fullpath); (void) strlcpy(fullpath, spath, sizeof (fullpath)); free(spath); } } /* * Attempt to online the device. */ if (zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE, &newstate) == 0 && (newstate == VDEV_STATE_HEALTHY || newstate == VDEV_STATE_DEGRADED)) { zed_log_msg(LOG_INFO, " zpool_vdev_online: vdev %s is %s", fullpath, (newstate == VDEV_STATE_HEALTHY) ? "HEALTHY" : "DEGRADED"); return; } /* * If the pool doesn't have the autoreplace property set, then attempt * a true online (without the unspare flag), which will trigger a FMA * fault. */ if (!zpool_get_prop_int(zhp, ZPOOL_PROP_AUTOREPLACE, NULL) || !wholedisk || physpath == NULL) { (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); zed_log_msg(LOG_INFO, " zpool_vdev_online: %s FORCEFAULT (%s)", fullpath, libzfs_error_description(g_zfshdl)); return; } /* * convert physical path into its current device node */ (void) snprintf(rawpath, sizeof (rawpath), "%s%s", DEV_BYPATH_PATH, physpath); if (realpath(rawpath, devpath) == NULL) { zed_log_msg(LOG_INFO, " realpath: %s failed (%s)", rawpath, strerror(errno)); (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); zed_log_msg(LOG_INFO, " zpool_vdev_online: %s FORCEFAULT (%s)", fullpath, libzfs_error_description(g_zfshdl)); return; } /* * we're auto-replacing a raw disk, so label it first */ if (!labeled) { char *leafname; /* * If this is a request to label a whole disk, then attempt to * write out the label. Before we can label the disk, we need * to map the physical string that was matched on to the under * lying device node. * * If any part of this process fails, then do a force online * to trigger a ZFS fault for the device (and any hot spare * replacement). */ leafname = strrchr(devpath, '/') + 1; /* * If this is a request to label a whole disk, then attempt to * write out the label. */ if (zpool_label_disk(g_zfshdl, zhp, leafname) != 0) { zed_log_msg(LOG_INFO, " zpool_label_disk: could not " "label '%s' (%s)", leafname, libzfs_error_description(g_zfshdl)); (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } /* * The disk labeling is asynchronous on Linux. Just record * this label request and return as there will be another * disk add event for the partition after the labeling is * completed. */ device = malloc(sizeof (pendingdev_t)); (void) strlcpy(device->pd_physpath, physpath, sizeof (device->pd_physpath)); list_insert_tail(&g_device_list, device); zed_log_msg(LOG_INFO, " zpool_label_disk: async '%s' (%llu)", leafname, (long long unsigned int)guid); return; /* resumes at EC_DEV_ADD.ESC_DISK for partition */ } else { /* labeled */ boolean_t found = B_FALSE; /* * match up with request above to label the disk */ for (device = list_head(&g_device_list); device != NULL; device = list_next(&g_device_list, device)) { if (strcmp(physpath, device->pd_physpath) == 0) { list_remove(&g_device_list, device); free(device); found = B_TRUE; break; } } if (!found) { /* unexpected partition slice encountered */ (void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT, &newstate); return; } zed_log_msg(LOG_INFO, " zpool_label_disk: resume '%s' (%llu)", physpath, (long long unsigned int)guid); if (nvlist_lookup_string(vdev, "new_devid", &new_devid) != 0) { zed_log_msg(LOG_INFO, " auto replace: missing devid!"); return; } (void) snprintf(devpath, sizeof (devpath), "%s%s", DEV_BYID_PATH, new_devid); path = devpath; } /* * Construct the root vdev to pass to zpool_vdev_attach(). While adding * the entire vdev structure is harmless, we construct a reduced set of * path/physpath/wholedisk to keep it simple. */ if (nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: nvlist_alloc out of memory"); return; } if (nvlist_alloc(&newvd, NV_UNIQUE_NAME, 0) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: nvlist_alloc out of memory"); nvlist_free(nvroot); return; } if (nvlist_add_string(newvd, ZPOOL_CONFIG_TYPE, VDEV_TYPE_DISK) != 0 || nvlist_add_string(newvd, ZPOOL_CONFIG_PATH, path) != 0 || nvlist_add_string(newvd, ZPOOL_CONFIG_DEVID, new_devid) != 0 || (physpath != NULL && nvlist_add_string(newvd, ZPOOL_CONFIG_PHYS_PATH, physpath) != 0) || nvlist_add_uint64(newvd, ZPOOL_CONFIG_WHOLE_DISK, wholedisk) != 0 || nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, VDEV_TYPE_ROOT) != 0 || nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, &newvd, 1) != 0) { zed_log_msg(LOG_WARNING, "zfs_mod: unable to add nvlist pairs"); nvlist_free(newvd); nvlist_free(nvroot); return; } nvlist_free(newvd); /* * auto replace a leaf disk at same physical location */ ret = zpool_vdev_attach(zhp, fullpath, path, nvroot, B_TRUE); zed_log_msg(LOG_INFO, " zpool_vdev_replace: %s with %s (%s)", fullpath, path, (ret == 0) ? "no errors" : libzfs_error_description(g_zfshdl)); nvlist_free(nvroot); }