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Want 'zfs send -b'
This change implements 'zfs send -b' which can be used to send only received property values whether or not they are overridden by local settings. This can be very useful during "restore" operations from a backup pool because it allows to send only the property values originally sent from the backup source, even though they were later modified on the destination either by a 'zfs set' operation, explicit 'zfs inherit' or overridden during the receive process via 'zfs receive -o|-x'. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: loli10K <ezomori.nozomu@gmail.com> Closes #7156
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LOLi
@@ -45,105 +45,6 @@ function cleanup
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log_must zfs destroy -r -f $dest
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}
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#
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# Verify property $2 is set from source $4 on dataset $1 and has value $3.
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#
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# $1 checked dataset
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# $2 user property
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# $3 property value
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# $4 source
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#
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function check_prop_source
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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typeset source="$4"
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typeset chk_value=$(get_prop "$prop" "$dataset")
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typeset chk_source=$(get_source "$prop" "$dataset")
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if [[ "$chk_value" != "$value" || "$chk_source" != "$4" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify target dataset $1 inherit property $2 from dataset $3.
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#
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# $1 checked dataset
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# $2 property
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# $3 inherited dataset
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#
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function check_prop_inherit
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{
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typeset checked_dtst="$1"
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typeset prop="$2"
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typeset inherited_dtst="$3"
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typeset inherited_value=$(get_prop "$prop" "$inherited_dtst")
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typeset value=$(get_prop "$prop" "$checked_dtst")
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typeset source=$(get_source "$prop" "$checked_dtst")
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if [[ "$value" != "$inherited_value" || \
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"$source" != "inherited from $inherited_dtst" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify property $2 received value on dataset $1 has value $3
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#
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# $1 checked dataset
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# $2 property name
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# $3 checked value
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#
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function check_prop_received
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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received=$(zfs get -H -o received "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop received value for dataset " \
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"$dataset"
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fi
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if [[ "$received" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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#
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# Verify user property $2 is not set on dataset $1
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#
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# $1 checked dataset
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# $2 property name
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#
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function check_prop_missing
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{
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typeset dataset="$1"
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typeset prop="$2"
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value=$(zfs get -H -o value "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop value for dataset $dataset"
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fi
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if [[ "-" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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log_assert "ZFS receive property override and exclude options work as expected."
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log_onexit cleanup
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@@ -12,4 +12,5 @@ dist_pkgdata_SCRIPTS = \
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zfs_send_007_pos.ksh \
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zfs_send_encrypted.ksh \
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zfs_send_raw.ksh \
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zfs_send_sparse.ksh
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zfs_send_sparse.ksh \
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zfs_send-b.ksh
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@@ -0,0 +1,103 @@
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#!/bin/ksh -p
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#
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# This file and its contents are supplied under the terms of the
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# Common Development and Distribution License ("CDDL"), version 1.0.
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# You may only use this file in accordance with the terms of version
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# 1.0 of the CDDL.
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#
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# A full copy of the text of the CDDL should have accompanied this
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# source. A copy of the CDDL is also available via the Internet at
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# http://www.illumos.org/license/CDDL.
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#
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#
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# Copyright 2018, 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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. $STF_SUITE/tests/functional/cli_root/zfs_set/zfs_set_common.kshlib
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#
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# DESCRIPTION:
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# 'zfs send -b' should works as expected.
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#
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# STRATEGY:
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# 1. Create a source dataset and set some properties
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# 2. Verify command line options interact with '-b' correctly
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# 3. Send the dataset and its properties to a new "backup" destination
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# 4. Set some properties on the new "backup" dataset
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# 5. Restore the "backup" dataset to a new destination
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# 6. Verify only original (received) properties are sent from "backup"
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#
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verify_runnable "both"
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function cleanup
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{
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for ds in "$SENDFS" "$BACKUP" "$RESTORE"; do
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datasetexists $ds && log_must zfs destroy -r $ds
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done
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}
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log_assert "'zfs send -b' should work as expected."
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log_onexit cleanup
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SENDFS="$TESTPOOL/sendfs"
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BACKUP="$TESTPOOL/backup"
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RESTORE="$TESTPOOL/restore"
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# 1. Create a source dataset and set some properties
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log_must zfs create $SENDFS
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log_must zfs snapshot "$SENDFS@s1"
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log_must zfs bookmark "$SENDFS@s1" "$SENDFS#bm"
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log_must zfs snapshot "$SENDFS@s2"
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log_must zfs set "compression=gzip" $SENDFS
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log_must zfs set "org.zfsonlinux:prop=val" $SENDFS
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log_must zfs set "org.zfsonlinux:snapprop=val" "$SENDFS@s1"
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# 2. Verify command line options interact with '-b' correctly
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typeset opts=("" "p" "Rp" "cew" "nv" "D" "DLPRcenpvw")
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for opt in ${opts[@]}; do
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log_must eval "zfs send -b$opt $SENDFS@s1 > /dev/null"
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log_must eval "zfs send -b$opt -i $SENDFS@s1 $SENDFS@s2 > /dev/null"
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log_must eval "zfs send -b$opt -I $SENDFS@s1 $SENDFS@s2 > /dev/null"
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done
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for opt in ${opts[@]}; do
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log_mustnot eval "zfs send -b$opt $SENDFS > /dev/null"
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log_mustnot eval "zfs send -b$opt $SENDFS#bm > /dev/null"
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log_mustnot eval "zfs send -b$opt -i $SENDFS#bm $SENDFS@s2 > /dev/null"
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done
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# Do 3..6 in a loop to verify various combination of "zfs send" options
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typeset opts=("" "p" "R" "pR" "cew")
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for opt in ${opts[@]}; do
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# 3. Send the dataset and its properties to a new "backup" destination
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# NOTE: only need to send properties (-p) here
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log_must eval "zfs send -p $SENDFS@s1 | zfs recv $BACKUP"
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# 4. Set some properties on the new "backup" dataset
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# NOTE: override "received" values and set some new properties as well
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log_must zfs set "compression=lz4" $BACKUP
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log_must zfs set "exec=off" $BACKUP
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log_must zfs set "org.zfsonlinux:prop=newval" $BACKUP
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log_must zfs set "org.zfsonlinux:newprop=newval" $BACKUP
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log_must zfs set "org.zfsonlinux:snapprop=newval" "$BACKUP@s1"
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log_must zfs set "org.zfsonlinux:newsnapprop=newval" "$BACKUP@s1"
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# 5. Restore the "backup" dataset to a new destination
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log_must eval "zfs send -b$opt $BACKUP@s1 | zfs recv $RESTORE"
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# 6. Verify only original (received) properties are sent from "backup"
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log_must eval "check_prop_source $RESTORE compression gzip received"
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log_must eval "check_prop_source $RESTORE org.zfsonlinux:prop val received"
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log_must eval "check_prop_source $RESTORE@s1 org.zfsonlinux:snapprop val received"
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log_must eval "check_prop_source $RESTORE exec on default"
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log_must eval "check_prop_missing $RESTORE org.zfsonlinux:newprop"
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log_must eval "check_prop_missing $RESTORE@s1 org.zfsonlinux:newsnapprop"
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# cleanup
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log_must zfs destroy -r $BACKUP
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log_must zfs destroy -r $RESTORE
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done
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log_pass "'zfs send -b' works as expected."
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@@ -267,3 +267,110 @@ function get_source
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echo "$source"
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}
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#
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# Verify property $2 is set from source $4 on dataset $1 and has value $3.
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#
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# $1 checked dataset
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# $2 user property
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# $3 property value
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# $4 source
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#
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# Returns: 0 if both expected source and value match, 1 otherwise
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#
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function check_prop_source
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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typeset source="$4"
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typeset chk_value=$(get_prop "$prop" "$dataset")
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typeset chk_source=$(get_source "$prop" "$dataset")
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if [[ "$chk_value" != "$value" || "$chk_source" != "$4" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify target dataset $1 inherit property $2 from dataset $3.
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#
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# $1 checked dataset
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# $2 property
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# $3 inherited dataset
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#
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# Returns: 0 if property has expected value and is inherited, 1 otherwise
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#
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function check_prop_inherit
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{
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typeset checked_dtst="$1"
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typeset prop="$2"
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typeset inherited_dtst="$3"
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typeset inherited_value=$(get_prop "$prop" "$inherited_dtst")
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typeset value=$(get_prop "$prop" "$checked_dtst")
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typeset source=$(get_source "$prop" "$checked_dtst")
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if [[ "$value" != "$inherited_value" || \
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"$source" != "inherited from $inherited_dtst" ]]
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then
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return 1
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else
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return 0
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fi
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}
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#
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# Verify property $2 received value on dataset $1 has value $3
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#
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# $1 checked dataset
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# $2 property name
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# $3 checked value
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#
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# Returns: 0 if property has expected value and is received, 1 otherwise
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#
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function check_prop_received
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{
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typeset dataset="$1"
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typeset prop="$2"
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typeset value="$3"
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received=$(zfs get -H -o received "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop received value for dataset " \
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"$dataset"
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fi
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if [[ "$received" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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#
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# Verify user property $2 is not set on dataset $1
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#
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# $1 checked dataset
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# $2 property name
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#
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# Returns: 0 if property is missing (not set), 1 otherwise
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#
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function check_prop_missing
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{
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typeset dataset="$1"
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typeset prop="$2"
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value=$(zfs get -H -o value "$prop" "$dataset")
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if (($? != 0)); then
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log_fail "Unable to get $prop value for dataset $dataset"
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fi
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if [[ "-" == "$value" ]]
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then
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return 0
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else
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return 1
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fi
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}
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