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Output each configuration name and snapshot number during transactions

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This commit is contained in:
James Barnett 2016-08-30 12:55:18 -05:00
parent 14b9e99d04
commit 9de30a8075
4 changed files with 42 additions and 15 deletions
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21
README.md
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@ -100,12 +100,19 @@ Installing the `nano` package as normal:
(1/1) checking for file conflicts [######################################] 100%
(1/1) checking available disk space [######################################] 100%
:: Running pre-transaction hooks...
(1/1) snapper pre snapshot
(1/1) Performing snapper pre snapshots...
home N/A
root 1033 ✓
:: Processing package changes...
(1/1) installing nano [######################################] 100%
:: Running post-transaction hooks...
(1/2) snapper post snapshot
(2/2) generate GRUB configuration file
(1/1) Performing snapper post snapshots...
home N/A
root 1034 ✓
The snapper snapshot number is given for each snapper configuration that is
used (tip: this is also logged in pacman's log). "N/A" means that configuration
is not set up for snap-pac (see above).
And here are the snapshots:
@ -176,6 +183,14 @@ removed before the post snapshot could be taken. When you initially install
*snap-pac* the post hook is run, but the pre hook never was, so this message
will show up then as well.
**I see an "N/A" next to one of my snapper configurations in the hook's output**
snap-pac lists all snapper configurations it finds and tells you which ones it
took a snapshot of. "N/A" means the configuration is not set up for snap-pac, so
no snapshot was taken.
See [configuration](#configuration).
## License
snap-pac

2
hooks/00_snapper-pre.hook
View file

@ -24,7 +24,7 @@ Type = Package
Target = *
[Action]
Description = Performing snapper pre snapshot...
Description = Performing snapper pre snapshots...
Depends = snap-pac
When = PreTransaction
Exec = /usr/share/libalpm/scripts/snap-pac pre

2
hooks/zz_snapper-post.hook
View file

@ -24,7 +24,7 @@ Type = Package
Target = *
[Action]
Description = Performing snapper post snapshot...
Description = Performing snapper post snapshots...
Depends = snap-pac
When = PostTransaction
Exec = /usr/share/libalpm/scripts/snap-pac post

32
scripts/snap-pac
View file

@ -66,20 +66,32 @@ for CONFIG in $SNAPPER_CONFIGS; do
# shellcheck source=/dev/null
source /etc/snapper/configs/"$CONFIG"
[[ $PACMAN_PRE_POST != "yes" ]] && continue
echo -n " $CONFIG "
prefile="/tmp/snap-pac-pre_$CONFIG"
snapper_cmd="snapper --config $CONFIG create --type $pre_or_post --cleanup-algorithm $PACMAN_CLEANUP_ALGORITHM"
if [[ $PACMAN_PRE_POST == "yes" ]]; then
x=$((x+1))
prefile="/tmp/snap-pac-pre_$CONFIG"
snapper_cmd="snapper --config $CONFIG create --type $pre_or_post --cleanup-algorithm $PACMAN_CLEANUP_ALGORITHM"
x=$((x+1))
if [[ "$pre_or_post" == "pre" ]]; then
$snapper_cmd --description "$PACMAN_PRE_DESCRIPTION" --print-number > "$prefile"
echo -n "$(< "$prefile") "
elif [[ -f $prefile ]]; then
postnum=$($snapper_cmd --description "$PACMAN_POST_DESCRIPTION" --print-number --pre-number "$(< "$prefile")")
echo -n "$postnum "
rm "$prefile"
else
echo "WARNING: $prefile does not exist, so no post snapshot will be taken. If you are initially installing snap-pac, this is normal."
fi
echo "✓"
if [[ "$pre_or_post" == "pre" ]]; then
$snapper_cmd --description "$PACMAN_PRE_DESCRIPTION" --print-number > "$prefile"
elif [[ -f $prefile ]]; then
$snapper_cmd --description "$PACMAN_POST_DESCRIPTION" --pre-number "$(< "$prefile")"
rm "$prefile"
else
echo "WARNING: $prefile does not exist, so no post snapshot will be taken. If you are initially installing snap-pac, this is normal."
echo "N/A"
fi
done