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Fix 'zpool add' handling of nested interior VDEVs
When replacing a faulted device which was previously handled by a spare
multiple levels of nested interior VDEVs will be present in the pool
configuration; the following example illustrates one of the possible
situations:
NAME STATE READ WRITE CKSUM
testpool DEGRADED 0 0 0
raidz1-0 DEGRADED 0 0 0
spare-0 DEGRADED 0 0 0
replacing-0 DEGRADED 0 0 0
/var/tmp/fault-dev UNAVAIL 0 0 0 cannot open
/var/tmp/replace-dev ONLINE 0 0 0
/var/tmp/spare-dev1 ONLINE 0 0 0
/var/tmp/safe-dev ONLINE 0 0 0
spares
/var/tmp/spare-dev1 INUSE currently in use
This is safe and allowed, but get_replication() needs to handle this
situation gracefully to let zpool add new devices to the pool.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #6678
Closes #6996
This commit is contained in:
LOLi
Brian Behlendorf
parent
2fe61a7ecc
commit
390d679acd
@ -861,9 +861,11 @@ get_replication(nvlist_t *nvroot, boolean_t fatal)
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/*
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* If this is a replacing or spare vdev, then
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* get the real first child of the vdev.
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* get the real first child of the vdev: do this
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* in a loop because replacing and spare vdevs
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* can be nested.
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*/
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if (strcmp(childtype,
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while (strcmp(childtype,
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VDEV_TYPE_REPLACING) == 0 ||
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strcmp(childtype, VDEV_TYPE_SPARE) == 0) {
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nvlist_t **rchild;
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@ -257,7 +257,7 @@ tests = ['zpool_add_001_pos', 'zpool_add_002_pos', 'zpool_add_003_pos',
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'zpool_add_004_pos', 'zpool_add_005_pos', 'zpool_add_006_pos',
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'zpool_add_007_neg', 'zpool_add_008_neg', 'zpool_add_009_neg',
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'zpool_add_010_pos',
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'add-o_ashift', 'add_prop_ashift']
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'add-o_ashift', 'add_prop_ashift', 'add_nested_replacing_spare']
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tags = ['functional', 'cli_root', 'zpool_add']
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[tests/functional/cli_root/zpool_attach]
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@ -15,4 +15,5 @@ dist_pkgdata_SCRIPTS = \
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zpool_add_009_neg.ksh \
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zpool_add_010_pos.ksh \
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add-o_ashift.ksh \
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add_prop_ashift.ksh
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add_prop_ashift.ksh \
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add_nested_replacing_spare.ksh
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@ -0,0 +1,111 @@
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#!/bin/ksh -p
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#
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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 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/cli_root/zpool_create/zpool_create.shlib
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#
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# DESCRIPTION:
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# 'zpool add' works with nested replacing/spare vdevs
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#
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# STRATEGY:
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# 1. Create a redundant pool with a spare device
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# 2. Manually fault a device, wait for the hot-spare and then replace it:
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# this creates a situation where replacing and spare vdevs are nested.
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# 3. Verify 'zpool add' is able to add new devices to the pool.
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#
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verify_runnable "global"
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function cleanup
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{
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zed_stop
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zed_cleanup
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log_must zinject -c all
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destroy_pool $TESTPOOL
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log_must rm -f $DATA_DEVS $SPARE_DEVS
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}
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log_assert "'zpool add' works with nested replacing/spare vdevs"
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log_onexit cleanup
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FAULT_DEV="$TEST_BASE_DIR/fault-dev"
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SAFE_DEV1="$TEST_BASE_DIR/safe-dev1"
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SAFE_DEV2="$TEST_BASE_DIR/safe-dev2"
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SAFE_DEV3="$TEST_BASE_DIR/safe-dev3"
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SAFE_DEVS="$SAFE_DEV1 $SAFE_DEV2 $SAFE_DEV3"
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REPLACE_DEV="$TEST_BASE_DIR/replace-dev"
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ADD_DEV="$TEST_BASE_DIR/add-dev"
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DATA_DEVS="$FAULT_DEV $SAFE_DEVS $REPLACE_DEV $ADD_DEV"
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SPARE_DEV1="$TEST_BASE_DIR/spare-dev1"
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SPARE_DEV2="$TEST_BASE_DIR/spare-dev2"
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SPARE_DEVS="$SPARE_DEV1 $SPARE_DEV2"
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# We need ZED running to work with spares
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zed_setup
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zed_start
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# Clear events from previous runs
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zed_events_drain
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for type in "mirror" "raidz1" "raidz2" "raidz3"
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do
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# 1. Create a redundant pool with a spare device
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truncate -s $SPA_MINDEVSIZE $DATA_DEVS $SPARE_DEVS
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log_must zpool create $TESTPOOL $type $FAULT_DEV $SAFE_DEVS
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log_must zpool add $TESTPOOL spare $SPARE_DEV1
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# 2.1 Fault a device, verify the spare is kicked in
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log_must zinject -d $FAULT_DEV -e nxio -T all -f 100 $TESTPOOL
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log_must zpool scrub $TESTPOOL
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log_must wait_vdev_state $TESTPOOL $FAULT_DEV "UNAVAIL" 60
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log_must wait_vdev_state $TESTPOOL $SPARE_DEV1 "ONLINE" 60
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log_must wait_hotspare_state $TESTPOOL $SPARE_DEV1 "INUSE"
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log_must check_state $TESTPOOL "" "DEGRADED"
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# 2.2 Replace the faulted device: this creates a replacing vdev inside a
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# spare vdev
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log_must zpool replace $TESTPOOL $FAULT_DEV $REPLACE_DEV
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log_must wait_vdev_state $TESTPOOL $REPLACE_DEV "ONLINE" 60
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zpool status | awk -v poolname="$TESTPOOL" -v type="$type" 'BEGIN {s=""}
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$1 ~ poolname {c=4}; (c && c--) { s=s$1":" }
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END { if (s != poolname":"type"-0:spare-0:replacing-0:") exit 1; }'
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if [[ $? -ne 0 ]]; then
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log_fail "Pool does not contain nested replacing/spare vdevs"
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fi
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# 3. Verify 'zpool add' is able to add new devices
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log_must zpool add $TESTPOOL spare $SPARE_DEV2
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log_must wait_hotspare_state $TESTPOOL $SPARE_DEV2 "AVAIL"
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log_must zpool add -f $TESTPOOL $ADD_DEV
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log_must wait_vdev_state $TESTPOOL $ADD_DEV "ONLINE" 60
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# Cleanup
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log_must zinject -c all
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destroy_pool $TESTPOOL
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log_must rm -f $DATA_DEVS $SPARE_DEVS
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done
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log_pass "'zpool add' works with nested replacing/spare vdevs"
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