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9dcb971983
There have been reports of ZFS deadlocking due to what appears to be a lost IO. This patch addes some debugging to determine the exact state of the IO which neither 1) completed, 2) failed, or 3) timed out after zio_delay_max (30) seconds. This information will be logged using the ZFS FMA infrastructure as a 'delay' event and posted to the internal zevent log. By default the last 64 events will be kept in the log but the limit is configurable via the zfs_zevent_len_max module option. To dump the contents of the log use the 'zpool events -v' command and look for the resource.fs.zfs.delay event. It will include various information about the pool, vdev, and zio which may shed some light on the issue. In the context of this change the 120 second kernel blocked thread watchdog has been disabled for synchronous IOs. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #930
116 lines
4.9 KiB
C
116 lines
4.9 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 http://www.opensolaris.org/os/licensing.
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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 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_FM_FS_ZFS_H
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#define _SYS_FM_FS_ZFS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ZFS_ERROR_CLASS "fs.zfs"
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#define FM_EREPORT_ZFS_CHECKSUM "checksum"
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#define FM_EREPORT_ZFS_IO "io"
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#define FM_EREPORT_ZFS_DATA "data"
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#define FM_EREPORT_ZFS_DELAY "delay"
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#define FM_EREPORT_ZFS_CONFIG_SYNC "config.sync"
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#define FM_EREPORT_ZFS_POOL "zpool"
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#define FM_EREPORT_ZFS_POOL_DESTROY "zpool.destroy"
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#define FM_EREPORT_ZFS_POOL_REGUID "zpool.reguid"
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#define FM_EREPORT_ZFS_DEVICE_UNKNOWN "vdev.unknown"
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#define FM_EREPORT_ZFS_DEVICE_OPEN_FAILED "vdev.open_failed"
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#define FM_EREPORT_ZFS_DEVICE_CORRUPT_DATA "vdev.corrupt_data"
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#define FM_EREPORT_ZFS_DEVICE_NO_REPLICAS "vdev.no_replicas"
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#define FM_EREPORT_ZFS_DEVICE_BAD_GUID_SUM "vdev.bad_guid_sum"
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#define FM_EREPORT_ZFS_DEVICE_TOO_SMALL "vdev.too_small"
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#define FM_EREPORT_ZFS_DEVICE_BAD_LABEL "vdev.bad_label"
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#define FM_EREPORT_ZFS_DEVICE_REMOVE "vdev.remove"
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#define FM_EREPORT_ZFS_DEVICE_CLEAR "vdev.clear"
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#define FM_EREPORT_ZFS_DEVICE_CHECK "vdev.check"
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#define FM_EREPORT_ZFS_DEVICE_SPARE "vdev.spare"
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#define FM_EREPORT_ZFS_DEVICE_AUTOEXPAND "vdev.autoexpand"
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#define FM_EREPORT_ZFS_IO_FAILURE "io_failure"
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#define FM_EREPORT_ZFS_PROBE_FAILURE "probe_failure"
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#define FM_EREPORT_ZFS_LOG_REPLAY "log_replay"
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#define FM_EREPORT_ZFS_RESILVER_START "resilver.start"
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#define FM_EREPORT_ZFS_RESILVER_FINISH "resilver.finish"
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#define FM_EREPORT_ZFS_SCRUB_START "scrub.start"
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#define FM_EREPORT_ZFS_SCRUB_FINISH "scrub.finish"
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#define FM_EREPORT_ZFS_BOOTFS_VDEV_ATTACH "bootfs.vdev.attach"
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#define FM_EREPORT_PAYLOAD_ZFS_POOL "pool"
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#define FM_EREPORT_PAYLOAD_ZFS_POOL_FAILMODE "pool_failmode"
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#define FM_EREPORT_PAYLOAD_ZFS_POOL_GUID "pool_guid"
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#define FM_EREPORT_PAYLOAD_ZFS_POOL_CONTEXT "pool_context"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_GUID "vdev_guid"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_TYPE "vdev_type"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_PATH "vdev_path"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_DEVID "vdev_devid"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_FRU "vdev_fru"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_STATE "vdev_state"
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#define FM_EREPORT_PAYLOAD_ZFS_PARENT_GUID "parent_guid"
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#define FM_EREPORT_PAYLOAD_ZFS_PARENT_TYPE "parent_type"
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#define FM_EREPORT_PAYLOAD_ZFS_PARENT_PATH "parent_path"
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#define FM_EREPORT_PAYLOAD_ZFS_PARENT_DEVID "parent_devid"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJSET "zio_objset"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_OBJECT "zio_object"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_LEVEL "zio_level"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_BLKID "zio_blkid"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_ERR "zio_err"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_OFFSET "zio_offset"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_SIZE "zio_size"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_FLAGS "zio_flags"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_STAGE "zio_stage"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_PIPELINE "zio_pipeline"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_DELAY "zio_delay"
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#define FM_EREPORT_PAYLOAD_ZFS_PREV_STATE "prev_state"
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#define FM_EREPORT_PAYLOAD_ZFS_CKSUM_EXPECTED "cksum_expected"
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#define FM_EREPORT_PAYLOAD_ZFS_CKSUM_ACTUAL "cksum_actual"
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#define FM_EREPORT_PAYLOAD_ZFS_CKSUM_ALGO "cksum_algorithm"
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#define FM_EREPORT_PAYLOAD_ZFS_CKSUM_BYTESWAP "cksum_byteswap"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_OFFSET_RANGES "bad_ranges"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_RANGE_MIN_GAP "bad_ranges_min_gap"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_RANGE_SETS "bad_range_sets"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_RANGE_CLEARS "bad_range_clears"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_SET_BITS "bad_set_bits"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_CLEARED_BITS "bad_cleared_bits"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_SET_HISTOGRAM "bad_set_histogram"
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#define FM_EREPORT_PAYLOAD_ZFS_BAD_CLEARED_HISTOGRAM "bad_cleared_histogram"
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#define FM_EREPORT_FAILMODE_WAIT "wait"
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#define FM_EREPORT_FAILMODE_CONTINUE "continue"
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#define FM_EREPORT_FAILMODE_PANIC "panic"
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#define FM_EREPORT_RESOURCE_REMOVED "removed"
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#define FM_EREPORT_RESOURCE_AUTOREPLACE "autoreplace"
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#define FM_EREPORT_RESOURCE_STATECHANGE "statechange"
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FM_FS_ZFS_H */
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