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#!/bin/bash
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# Copyright (C) 2012 Google Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# This is an offline testing script for most/all of the htools
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# programs, checking basic command line functionality.
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set -e
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. $(dirname $0)/cli-tests-defs.sh
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T=`mktemp -d`
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trap 'rm -rf $T' EXIT
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trap 'echo FAIL' ERR
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echo Using $T as temporary dir
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echo Checking command line basic options
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for prog in $ALL_ROLES; do
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  $prog --version >/dev/null
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  $prog --help >/dev/null
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  ! $prog --no-such-option 2>/dev/null
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done
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echo OK
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echo Checking missing backend failure
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for prog in hspace hinfo hbal; do
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  ! $prog 2>/dev/null
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done
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echo OK
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echo Checking hail missing input file
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! hail 2>/dev/null
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echo OK
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echo Checking extra arguments
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for prog in hspace hbal hinfo; do
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  ! $prog unexpected-argument 2>&1 | \
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    grep -q "Error: this program doesn't take any arguments"
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done
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echo OK
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echo Checking failure on multiple backends
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(! hbal -t /dev/null -m localhost 2>&1 ) | \
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  grep -q "Error: Only one of the rapi, luxi, and data files options should be given."
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echo OK
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echo Checking hspace machine-readable mode
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hspace --simu p,4,8T,64g,16 --machine-readable \
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  --disk-template drbd -l 8 >$T/capacity
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( . $T/capacity && test "$HTS_OK" = "1" )
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echo OK
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echo Checking hspace simulation to hinfo to hbal
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# this cluster spec should be fine
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hspace --simu p,4,8T,64g,16 -S $T/simu-onegroup \
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  --disk-template drbd -l 8 -v -v -v >/dev/null 2>&1
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# results in .tiered and .standard
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for suffix in standard tiered; do
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  BACKEND="-t$T/simu-onegroup.$suffix"
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  hinfo -v -v -p --print-instances $BACKEND >/dev/null 2>&1
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  hbal  -v -v -p --print-instances $BACKEND >/dev/null 2>&1
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  # hbal should not be able to balance
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  hbal $BACKEND | grep -qE "(Nothing to do, exiting|No solution found)"
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done
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echo OK
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echo Checking hinfo and hbal on multi-nodegroup
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hspace --simu p,4,8T,64g,16 --simu p,4,8T,64g,16 \
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  -S $T/simu-twogroups --disk-template drbd -l 8 >/dev/null 2>&1
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# results in .tiered and .standard
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for suffix in standard tiered; do
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  BACKEND="-t$T/simu-twogroups.$suffix"
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  hinfo -v -v -p --print-instances $BACKEND >/dev/null 2>&1
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  ! hbal $BACKEND >/dev/null 2>&1
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  # hbal should not be able to balance
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  ! hbal $BACKEND 2>&1 | grep -q "Found multiple node groups"
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  # but hbal should be able to balance one node group
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  hbal $BACKEND -G group-01 >/dev/null
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  # and it should not find an invalid group
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  ! hbal $BACKEND -G no-such-group >/dev/null 2>&1
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done
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echo OK
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echo Checking rebalancing
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# we generate a cluster with two node groups, one with unallocable
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# policy, then we change all nodes from this group to the allocable
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# one, and we check for rebalancing
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FROOT="$T/simu-rebal-orig"
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hspace --simu p,4,8T,64g,16 --simu u,4,8T,64g,16 \
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  -S $FROOT --disk-template drbd -l 8 >/dev/null 2>&1
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for suffix in standard tiered; do
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  RELOC="$T/simu-rebal-merged.$suffix"
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  # this relocates the nodes
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  sed -re 's/^(node-.*|fake-uuid-)-02(|.*)/\1-01\2/' \
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    < $FROOT.$suffix > $RELOC
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  BACKEND="-t$RELOC"
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  hinfo -v -v -p --print-instances $BACKEND >/dev/null 2>&1
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  hbal -v -v -v -p --print-instances $BACKEND -G group-01 2>/dev/null | \
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    grep -qE -v "(Nothing to do, exiting|No solution found)"
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  hbal $BACKEND -G group-01 -C$T/rebal-cmds.$suffix \
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    -S $T/simu-rebal.$suffix >/dev/null 2>&1
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  grep -qE "gnt-instance (failover|migrate|replace-disks)" \
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    $T/rebal-cmds.$suffix
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  hbal $BACKEND -G group-01 -C \
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    -S $T/simu-rebal.$suffix 2>/dev/null | \
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    grep -qE "gnt-instance (failover|migrate|replace-disks)"
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  # state saved by hbal should be original
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  cmp $RELOC $T/simu-rebal.$suffix.original
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  # and we can't double rebalance
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  hbal -t $T/simu-rebal.$suffix.balanced \
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    -G group-01 | \
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    grep -qE "(Nothing to do, exiting|No solution found)"
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done
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echo OK
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echo All OK