diff options
Diffstat (limited to 'sys/contrib/opensolaris/uts/common/fs/zfs/zfs_fm.c')
| -rw-r--r-- | sys/contrib/opensolaris/uts/common/fs/zfs/zfs_fm.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/sys/contrib/opensolaris/uts/common/fs/zfs/zfs_fm.c b/sys/contrib/opensolaris/uts/common/fs/zfs/zfs_fm.c deleted file mode 100644 index e2385a0..0000000 --- a/sys/contrib/opensolaris/uts/common/fs/zfs/zfs_fm.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2006 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <sys/spa.h> -#include <sys/spa_impl.h> -#include <sys/vdev.h> -#include <sys/vdev_impl.h> -#include <sys/zio.h> - -#include <sys/fm/fs/zfs.h> -#include <sys/fm/protocol.h> -#include <sys/fm/util.h> - -#ifdef _KERNEL -/* Including sys/bus.h is just too hard, so I declare what I need here. */ -extern void devctl_notify(const char *__system, const char *__subsystem, - const char *__type, const char *__data); -#endif - -/* - * This general routine is responsible for generating all the different ZFS - * ereports. The payload is dependent on the class, and which arguments are - * supplied to the function: - * - * EREPORT POOL VDEV IO - * block X X X - * data X X - * device X X - * pool X - * - * If we are in a loading state, all errors are chained together by the same - * SPA-wide ENA. - * - * For isolated I/O requests, we get the ENA from the zio_t. The propagation - * gets very complicated due to RAID-Z, gang blocks, and vdev caching. We want - * to chain together all ereports associated with a logical piece of data. For - * read I/Os, there are basically three 'types' of I/O, which form a roughly - * layered diagram: - * - * +---------------+ - * | Aggregate I/O | No associated logical data or device - * +---------------+ - * | - * V - * +---------------+ Reads associated with a piece of logical data. - * | Read I/O | This includes reads on behalf of RAID-Z, - * +---------------+ mirrors, gang blocks, retries, etc. - * | - * V - * +---------------+ Reads associated with a particular device, but - * | Physical I/O | no logical data. Issued as part of vdev caching - * +---------------+ and I/O aggregation. - * - * Note that 'physical I/O' here is not the same terminology as used in the rest - * of ZIO. Typically, 'physical I/O' simply means that there is no attached - * blockpointer. But I/O with no associated block pointer can still be related - * to a logical piece of data (i.e. RAID-Z requests). - * - * Purely physical I/O always have unique ENAs. They are not related to a - * particular piece of logical data, and therefore cannot be chained together. - * We still generate an ereport, but the DE doesn't correlate it with any - * logical piece of data. When such an I/O fails, the delegated I/O requests - * will issue a retry, which will trigger the 'real' ereport with the correct - * ENA. - * - * We keep track of the ENA for a ZIO chain through the 'io_logical' member. - * When a new logical I/O is issued, we set this to point to itself. Child I/Os - * then inherit this pointer, so that when it is first set subsequent failures - * will use the same ENA. If a physical I/O is issued (by passing the - * ZIO_FLAG_NOBOOKMARK flag), then this pointer is reset, guaranteeing that a - * unique ENA will be generated. For an aggregate I/O, this pointer is set to - * NULL, and no ereport will be generated (since it doesn't actually correspond - * to any particular device or piece of data). - */ -void -zfs_ereport_post(const char *subclass, spa_t *spa, vdev_t *vd, zio_t *zio, - uint64_t stateoroffset, uint64_t size) -{ -#ifdef _KERNEL - char buf[1024]; - struct sbuf sb; - struct timespec ts; - - /* - * If we are doing a spa_tryimport(), ignore errors. - */ - if (spa->spa_load_state == SPA_LOAD_TRYIMPORT) - return; - - /* - * If we are in the middle of opening a pool, and the previous attempt - * failed, don't bother logging any new ereports - we're just going to - * get the same diagnosis anyway. - */ - if (spa->spa_load_state != SPA_LOAD_NONE && - spa->spa_last_open_failed) - return; - - /* - * Ignore any errors from I/Os that we are going to retry anyway - we - * only generate errors from the final failure. - */ - if (zio && zio_should_retry(zio)) - return; - - /* - * If this is not a read or write zio, ignore the error. This can occur - * if the DKIOCFLUSHWRITECACHE ioctl fails. - */ - if (zio && zio->io_type != ZIO_TYPE_READ && - zio->io_type != ZIO_TYPE_WRITE) - return; - - nanotime(&ts); - - sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN); - sbuf_printf(&sb, "time=%ju.%ld", (uintmax_t)ts.tv_sec, ts.tv_nsec); - - /* - * Serialize ereport generation - */ - mutex_enter(&spa->spa_errlist_lock); - -#if 0 - /* - * Determine the ENA to use for this event. If we are in a loading - * state, use a SPA-wide ENA. Otherwise, if we are in an I/O state, use - * a root zio-wide ENA. Otherwise, simply use a unique ENA. - */ - if (spa->spa_load_state != SPA_LOAD_NONE) { -#if 0 - if (spa->spa_ena == 0) - spa->spa_ena = fm_ena_generate(0, FM_ENA_FMT1); -#endif - ena = spa->spa_ena; - } else if (zio != NULL && zio->io_logical != NULL) { -#if 0 - if (zio->io_logical->io_ena == 0) - zio->io_logical->io_ena = - fm_ena_generate(0, FM_ENA_FMT1); -#endif - ena = zio->io_logical->io_ena; - } else { -#if 0 - ena = fm_ena_generate(0, FM_ENA_FMT1); -#else - ena = 0; -#endif - } -#endif - - /* - * Construct the full class, detector, and other standard FMA fields. - */ - sbuf_printf(&sb, " ereport_version=%u", FM_EREPORT_VERSION); - sbuf_printf(&sb, " class=%s.%s", ZFS_ERROR_CLASS, subclass); - - sbuf_printf(&sb, " zfs_scheme_version=%u", FM_ZFS_SCHEME_VERSION); - - /* - * Construct the per-ereport payload, depending on which parameters are - * passed in. - */ - - /* - * Generic payload members common to all ereports. - * - * The direct reference to spa_name is used rather than spa_name() - * because of the asynchronous nature of the zio pipeline. spa_name() - * asserts that the config lock is held in some form. This is always - * the case in I/O context, but because the check for RW_WRITER compares - * against 'curthread', we may be in an asynchronous context and blow - * this assert. Rather than loosen this assert, we acknowledge that all - * contexts in which this function is called (pool open, I/O) are safe, - * and dereference the name directly. - */ - sbuf_printf(&sb, " %s=%s", FM_EREPORT_PAYLOAD_ZFS_POOL, spa->spa_name); - sbuf_printf(&sb, " %s=%ju", FM_EREPORT_PAYLOAD_ZFS_POOL_GUID, - spa_guid(spa)); - sbuf_printf(&sb, " %s=%u", FM_EREPORT_PAYLOAD_ZFS_POOL_CONTEXT, - spa->spa_load_state); - - if (vd != NULL) { - vdev_t *pvd = vd->vdev_parent; - - sbuf_printf(&sb, " %s=%ju", FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, - vd->vdev_guid); - sbuf_printf(&sb, " %s=%s", FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE, - vd->vdev_ops->vdev_op_type); - if (vd->vdev_path) - sbuf_printf(&sb, " %s=%s", - FM_EREPORT_PAYLOAD_ZFS_VDEV_PATH, vd->vdev_path); - if (vd->vdev_devid) - sbuf_printf(&sb, " %s=%s", - FM_EREPORT_PAYLOAD_ZFS_VDEV_DEVID, vd->vdev_devid); - - if (pvd != NULL) { - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_PARENT_GUID, pvd->vdev_guid); - sbuf_printf(&sb, " %s=%s", - FM_EREPORT_PAYLOAD_ZFS_PARENT_TYPE, - pvd->vdev_ops->vdev_op_type); - if (pvd->vdev_path) - sbuf_printf(&sb, " %s=%s", - FM_EREPORT_PAYLOAD_ZFS_PARENT_PATH, - pvd->vdev_path); - if (pvd->vdev_devid) - sbuf_printf(&sb, " %s=%s", - FM_EREPORT_PAYLOAD_ZFS_PARENT_DEVID, - pvd->vdev_devid); - } - } - - if (zio != NULL) { - /* - * Payload common to all I/Os. - */ - sbuf_printf(&sb, " %s=%u", FM_EREPORT_PAYLOAD_ZFS_ZIO_ERR, - zio->io_error); - - /* - * If the 'size' parameter is non-zero, it indicates this is a - * RAID-Z or other I/O where the physical offset and length are - * provided for us, instead of within the zio_t. - */ - if (vd != NULL) { - if (size) { - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_OFFSET, - stateoroffset); - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_SIZE, size); - } else { - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_OFFSET, - zio->io_offset); - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_SIZE, - zio->io_size); - } - } - - /* - * Payload for I/Os with corresponding logical information. - */ - if (zio->io_logical != NULL) { - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJECT, - zio->io_logical->io_bookmark.zb_object); - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_LEVEL, - zio->io_logical->io_bookmark.zb_level); - sbuf_printf(&sb, " %s=%ju", - FM_EREPORT_PAYLOAD_ZFS_ZIO_BLKID, - zio->io_logical->io_bookmark.zb_blkid); - } - } else if (vd != NULL) { - /* - * If we have a vdev but no zio, this is a device fault, and the - * 'stateoroffset' parameter indicates the previous state of the - * vdev. - */ - sbuf_printf(&sb, " %s=%ju", FM_EREPORT_PAYLOAD_ZFS_PREV_STATE, - stateoroffset); - } - mutex_exit(&spa->spa_errlist_lock); - - sbuf_finish(&sb); - ZFS_LOG(1, "%s", sbuf_data(&sb)); - devctl_notify("ZFS", spa->spa_name, subclass, sbuf_data(&sb)); - if (sbuf_overflowed(&sb)) - printf("ZFS WARNING: sbuf overflowed\n"); - sbuf_delete(&sb); -#endif -} - -/* - * The 'resource.fs.zfs.ok' event is an internal signal that the associated - * resource (pool or disk) has been identified by ZFS as healthy. This will - * then trigger the DE to close the associated case, if any. - */ -void -zfs_post_ok(spa_t *spa, vdev_t *vd) -{ -#ifdef _KERNEL - char buf[1024]; - char class[64]; - struct sbuf sb; - struct timespec ts; - - nanotime(&ts); - - sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN); - sbuf_printf(&sb, "time=%ju.%ld", (uintmax_t)ts.tv_sec, ts.tv_nsec); - - snprintf(class, sizeof(class), "%s.%s.%s", FM_RSRC_RESOURCE, - ZFS_ERROR_CLASS, FM_RESOURCE_OK); - sbuf_printf(&sb, " %s=%hhu", FM_VERSION, FM_RSRC_VERSION); - sbuf_printf(&sb, " %s=%s", FM_CLASS, class); - sbuf_printf(&sb, " %s=%ju", FM_EREPORT_PAYLOAD_ZFS_POOL_GUID, - spa_guid(spa)); - if (vd) - sbuf_printf(&sb, " %s=%ju", FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID, - vd->vdev_guid); - sbuf_finish(&sb); - devctl_notify("ZFS", spa->spa_name, class, sbuf_data(&sb)); - if (sbuf_overflowed(&sb)) - printf("ZFS WARNING: sbuf overflowed\n"); - sbuf_delete(&sb); -#endif -} |
