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#!/bin/ksh -p
#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
#
# Copyright (c) 2016 by Delphix. All rights reserved.
#
. $STF_SUITE/tests/functional/cli_root/zpool_import/zpool_import.kshlib
#
# DESCRIPTION:
# A pool should be importable when up to 2 top-level devices are missing.
#
# STRATEGY:
# 1. Create a pool.
# 2. Write some data to the pool and checksum it.
# 3. Add one or more devices.
# 4. Write more data to the pool and checksum it.
# 5. Export the pool.
# 6. Move added devices out of the devices directory.
# 7. Import the pool with missing devices.
# 8. Verify that the first batch of data is intact.
# 9. Verify that accessing the second batch of data doesn't suspend pool.
# 10. Export the pool, move back missing devices, Re-import the pool.
# 11. Verify that all the data is intact.
#
verify_runnable "global"
function custom_cleanup
{
log_must set_spa_load_verify_metadata 1
log_must set_spa_load_verify_data 1
log_must set_zfs_max_missing_tvds 0
log_must rm -rf $BACKUP_DEVICE_DIR
# Highly damaged pools may fail to be destroyed, so we export them.
poolexists $TESTPOOL1 && log_must zpool export $TESTPOOL1
cleanup
}
log_onexit custom_cleanup
function test_devices_missing
{
typeset poolcreate="$1"
typeset addvdevs="$2"
typeset missingvdevs="$3"
typeset -i missingtvds="$4"
log_note "$0: pool '$poolcreate', adding $addvdevs, then" \
"moving away $missingvdevs."
log_must zpool create $TESTPOOL1 $poolcreate
log_must generate_data $TESTPOOL1 $MD5FILE "first"
log_must zpool add $TESTPOOL1 $addvdevs
log_must generate_data $TESTPOOL1 $MD5FILE2 "second"
log_must zpool export $TESTPOOL1
log_must mv $missingvdevs $BACKUP_DEVICE_DIR
# Tell zfs that it is ok to import a pool with missing top-level vdevs
log_must set_zfs_max_missing_tvds $missingtvds
# Missing devices means that data or metadata may be corrupted.
(( missingtvds > 1 )) && log_must set_spa_load_verify_metadata 0
log_must set_spa_load_verify_data 0
log_must zpool import -o readonly=on -d $DEVICE_DIR $TESTPOOL1
log_must verify_data_md5sums $MD5FILE
log_note "Try reading second batch of data, make sure pool doesn't" \
"get suspended."
verify_data_md5sums $MD5FILE >/dev/null 2>&1
log_must zpool export $TESTPOOL1
typeset newpaths=$(echo "$missingvdevs" | \
sed "s:$DEVICE_DIR:$BACKUP_DEVICE_DIR:g")
log_must mv $newpaths $DEVICE_DIR
log_must set_spa_load_verify_metadata 1
log_must set_spa_load_verify_data 1
log_must set_zfs_max_missing_tvds 0
log_must zpool import -d $DEVICE_DIR $TESTPOOL1
log_must verify_data_md5sums $MD5FILE
log_must verify_data_md5sums $MD5FILE2
# Cleanup
log_must zpool destroy $TESTPOOL1
log_note ""
}
log_must mkdir -p $BACKUP_DEVICE_DIR
test_devices_missing "$VDEV0" "$VDEV1" "$VDEV1" 1
test_devices_missing "$VDEV0" "$VDEV1 $VDEV2" "$VDEV1" 1
test_devices_missing "mirror $VDEV0 $VDEV1" "mirror $VDEV2 $VDEV3" \
"$VDEV2 $VDEV3" 1
test_devices_missing "$VDEV0 log $VDEV1" "$VDEV2" "$VDEV2" 1
#
# Note that we are testing for 2 non-consecutive missing devices.
# Missing consecutive devices results in missing metadata. Because of
# Missing metadata can cause the root dataset to fail to mount.
#
test_devices_missing "$VDEV0" "$VDEV1 $VDEV2 $VDEV3" "$VDEV1 $VDEV3" 2
log_pass "zpool import succeeded with missing devices."
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