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8fb1ede146
The intent of this patch is extend the existing deadman code
such that it's flexible enough to be used by both ztest and
on production systems. The proposed changes include:
* Added a new `zfs_deadman_failmode` module option which is
used to dynamically control the behavior of the deadman. It's
loosely modeled after, but independant from, the pool failmode
property. It can be set to wait, continue, or panic.
* wait - Wait for the "hung" I/O (default)
* continue - Attempt to recover from a "hung" I/O
* panic - Panic the system
* Added a new `zfs_deadman_ziotime_ms` module option which is
analogous to `zfs_deadman_synctime_ms` except instead of
applying to a pool TXG sync it applies to zio_wait(). A
default value of 300s is used to define a "hung" zio.
* The ztest deadman thread has been re-enabled by default,
aligned with the upstream OpenZFS code, and then extended
to terminate the process when it takes significantly longer
to complete than expected.
* The -G option was added to ztest to print the internal debug
log when a fatal error is encountered. This same option was
previously added to zdb in commit fa603f82. Update zloop.sh
to unconditionally pass -G to obtain additional debugging.
* The FM_EREPORT_ZFS_DELAY event which was previously posted
when the deadman detect a "hung" pool has been replaced by
a new dedicated FM_EREPORT_ZFS_DEADMAN event.
* The proposed recovery logic attempts to restart a "hung"
zio by calling zio_interrupt() on any outstanding leaf zios.
We may want to further restrict this to zios in either the
ZIO_STAGE_VDEV_IO_START or ZIO_STAGE_VDEV_IO_DONE stages.
Calling zio_interrupt() is expected to only be useful for
cases when an IO has been submitted to the physical device
but for some reasonable the completion callback hasn't been
called by the lower layers. This shouldn't be possible but
has been observed and may be caused by kernel/driver bugs.
* The 'zfs_deadman_synctime_ms' default value was reduced from
1000s to 600s.
* Depending on how ztest fails there may be no cache file to
move. This should not be considered fatal, collect the logs
which are available and carry on.
* Add deadman test cases for spa_deadman() and zio_wait().
* Increase default zfs_deadman_checktime_ms to 60s.
Reviewed-by: Tim Chase <tim@chase2k.com>
Reviewed by: Thomas Caputi <tcaputi@datto.com>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6999
121 lines
5.3 KiB
C
121 lines
5.3 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_AUTHENTICATION "authentication"
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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_DEADMAN "deadman"
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#define FM_EREPORT_ZFS_POOL "zpool"
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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_BAD_ASHIFT "vdev.bad_ashift"
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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_CONFIG_CACHE_WRITE "config_cache_write"
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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_POOL_STATE "pool_state"
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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_PHYSPATH "vdev_physpath"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_ENC_SYSFS_PATH "vdev_enc_sysfs_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_VDEV_LASTSTATE "vdev_laststate"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_ASHIFT "vdev_ashift"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_COMP_TS "vdev_complete_ts"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_DELTA_TS "vdev_delta_ts"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_SPARE_PATHS "vdev_spare_paths"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_SPARE_GUIDS "vdev_spare_guids"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_READ_ERRORS "vdev_read_errors"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_WRITE_ERRORS "vdev_write_errors"
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#define FM_EREPORT_PAYLOAD_ZFS_VDEV_CKSUM_ERRORS "vdev_cksum_errors"
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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_ZIO_TIMESTAMP "zio_timestamp"
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#define FM_EREPORT_PAYLOAD_ZFS_ZIO_DELTA "zio_delta"
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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_RESOURCE_REMOVED "removed"
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#define FM_RESOURCE_AUTOREPLACE "autoreplace"
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#define FM_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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