106 lines
4.5 KiB
Diff
106 lines
4.5 KiB
Diff
commit 552dd6bfb20fdb3dc712b5243656d147392c27c3
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Author: Johannes Meixner <jsmeix@suse.com>
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Date: Thu Jun 2 15:25:52 2022 +0200
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Merge pull request #2811 from rear/jsmeix-RECOVERY_COMMANDS
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Add PRE_RECOVERY_COMMANDS and POST_RECOVERY_COMMANDS
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as alternative to PRE_RECOVERY_SCRIPT and POST_RECOVERY_SCRIPT
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see the description in default.conf how to use them and how they work.
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See https://github.com/rear/rear/pull/2811 and see also
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https://github.com/rear/rear/pull/2735 therein in particular
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https://github.com/rear/rear/pull/2735#issuecomment-1134686196
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Additionally use LogPrint to show the user the executed commands,
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see https://github.com/rear/rear/pull/2789
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diff --git a/usr/share/rear/conf/default.conf b/usr/share/rear/conf/default.conf
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index cb14da8b..b14525da 100644
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--- a/usr/share/rear/conf/default.conf
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+++ b/usr/share/rear/conf/default.conf
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@@ -3117,14 +3117,37 @@ ELILO_BIN=
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################ ---- custom scripts
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#
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# NOTE: The scripts can be defined as an array to better handly spaces in parameters.
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-# The scripts are called like this: eval "${PRE_RECOVERY_SCRIPT[@]}"
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+# The scripts are called like this:
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+# eval "${PRE_RECOVERY_SCRIPT[@]}"
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+#
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+# Alternatively, commands can be executed by using the corresponding
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+# PRE_RECOVERY_COMMANDS and POST_RECOVERY_COMMANDS array variables
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+# which evaluate like this:
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+# for command in "${PRE_RECOVERY_COMMANDS[@]}" ; do
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+# eval "$command"
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+# done
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+#
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+# Using PRE_RECOVERY_COMMANDS and POST_RECOVERY_COMMANDS
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+# is simpler when multiple commands should be executed.
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+# For example,
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+# PRE_RECOVERY_SCRIPT=( 'echo Hello' ';' 'sleep 3' )
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+# can be rewritten as
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+# PRE_RECOVERY_COMMANDS=( 'echo Hello' 'sleep 3' )
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+# or
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+# PRE_RECOVERY_COMMANDS=( 'echo Hello' )
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+# PRE_RECOVERY_COMMANDS+=( 'sleep 3' )
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+
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+# Those get called at the very beginning of "rear recover".
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+# The PRE_RECOVERY_COMMANDS are called directly before the PRE_RECOVERY_SCRIPT.
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+# Nothing was recreated and you have only the plain ReaR rescue/recovery system:
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+PRE_RECOVERY_COMMANDS=()
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+PRE_RECOVERY_SCRIPT=
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-# Call this after Relax-and-Recover did everything in the recover workflow.
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-# Use $TARGET_FS_ROOT (by default '/mnt/local') to refer to the recovered system.
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+# Those get called at the very end of "rear recover".
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+# The POST_RECOVERY_COMMANDS are called directly after the POST_RECOVERY_SCRIPT.
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+# Use $TARGET_FS_ROOT (by default '/mnt/local') to access the recreated target system.
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POST_RECOVERY_SCRIPT=
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-
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-# Call this before Relax-and-Recover starts to do anything in the recover workflow. You have the rescue system but nothing else
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-PRE_RECOVERY_SCRIPT=
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+POST_RECOVERY_COMMANDS=()
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# PRE/POST Backup scripts will provide the ability to run certain tasks before and after a ReaR backup.
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# for example:
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diff --git a/usr/share/rear/setup/default/010_pre_recovery_script.sh b/usr/share/rear/setup/default/010_pre_recovery_script.sh
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index 005107cc..8b4e4a36 100644
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--- a/usr/share/rear/setup/default/010_pre_recovery_script.sh
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+++ b/usr/share/rear/setup/default/010_pre_recovery_script.sh
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@@ -1,4 +1,14 @@
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+
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+# The PRE_RECOVERY_COMMANDS are called directly before the PRE_RECOVERY_SCRIPT
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+# so PRE_RECOVERY_COMMANDS can also be used to prepare things for the PRE_RECOVERY_SCRIPT:
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+
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+local command
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+for command in "${PRE_RECOVERY_COMMANDS[@]}" ; do
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+ LogPrint "Running PRE_RECOVERY_COMMANDS '$command'"
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+ eval "$command"
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+done
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+
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if test "$PRE_RECOVERY_SCRIPT" ; then
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- Log "Running PRE_RECOVERY_SCRIPT '${PRE_RECOVERY_SCRIPT[@]}'"
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- eval "${PRE_RECOVERY_SCRIPT[@]}"
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+ LogPrint "Running PRE_RECOVERY_SCRIPT '${PRE_RECOVERY_SCRIPT[@]}'"
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+ eval "${PRE_RECOVERY_SCRIPT[@]}"
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fi
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diff --git a/usr/share/rear/wrapup/default/500_post_recovery_script.sh b/usr/share/rear/wrapup/default/500_post_recovery_script.sh
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index 77751800..866c9368 100644
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--- a/usr/share/rear/wrapup/default/500_post_recovery_script.sh
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+++ b/usr/share/rear/wrapup/default/500_post_recovery_script.sh
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@@ -1,4 +1,14 @@
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+
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+# The POST_RECOVERY_COMMANDS are called directly after the POST_RECOVERY_SCRIPT
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+# so POST_RECOVERY_COMMANDS can also be used to clean up things after the POST_RECOVERY_SCRIPT:
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+
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if test "$POST_RECOVERY_SCRIPT" ; then
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- Log "Running POST_RECOVERY_SCRIPT '${POST_RECOVERY_SCRIPT[@]}'"
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- eval "${POST_RECOVERY_SCRIPT[@]}"
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+ LogPrint "Running POST_RECOVERY_SCRIPT '${POST_RECOVERY_SCRIPT[@]}'"
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+ eval "${POST_RECOVERY_SCRIPT[@]}"
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fi
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+
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+local command
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+for command in "${POST_RECOVERY_COMMANDS[@]}" ; do
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+ LogPrint "Running POST_RECOVERY_COMMANDS '$command'"
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+ eval "$command"
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+done
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