Alois Wohlschlagerandeldritch horrors
e62b7236e8
The first auto-GC request would not be registered as a waiter due to a logic
error. As a result, if that request was synchronous (as happens during
evaluation) it would be stuck forever waiting on a promise that will never be
fulfilled.
Register also the first request properly so that it is notified and unblocked
again when the GC has finished. Also add a test verifying that auto-GC
triggering during evaluation will not get stuck.
Fixes: https://git.lix.systems/lix-project/lix/issues/844
Change-Id: I157afdc737415261e48d6d01d46c586a2927a1ad
(cherry picked from commit 4505bfac8e)
85 lines
2.0 KiB
Bash
85 lines
2.0 KiB
Bash
source common.sh
|
|
|
|
needLocalStore "“min-free” and “max-free” are daemon options"
|
|
|
|
clearStore
|
|
|
|
fake_free=$TEST_ROOT/fake-free
|
|
export _NIX_TEST_FREE_SPACE_FILE=$fake_free
|
|
echo 1100 > $fake_free
|
|
|
|
# Check that auto-GC during evaluation progresses.
|
|
timeout --signal=KILL 10s nix eval --expr 'builtins.toFile "meow" "meow"' --min-free 2000
|
|
|
|
garbage1=$(nix store add-path --name garbage1 ./nar-access.sh)
|
|
garbage2=$(nix store add-path --name garbage2 ./nar-access.sh)
|
|
garbage3=$(nix store add-path --name garbage3 ./nar-access.sh)
|
|
|
|
ls -l $garbage3
|
|
POSIXLY_CORRECT=1 du $garbage3
|
|
|
|
fifoLock=$TEST_ROOT/fifoLock
|
|
mkfifo "$fifoLock"
|
|
|
|
expr=$(cat <<EOF
|
|
with import ./config.nix; mkDerivation {
|
|
name = "gc-A";
|
|
buildCommand = ''
|
|
set -x
|
|
[[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 3 ]]
|
|
|
|
mkdir \$out
|
|
echo foo > \$out/bar
|
|
|
|
# Pretend that we run out of space
|
|
echo 100 > ${fake_free}.tmp1
|
|
mv ${fake_free}.tmp1 $fake_free
|
|
|
|
# Wait for the GC to run
|
|
for i in {1..20}; do
|
|
echo ''\${i}...
|
|
if [[ \$(ls \$NIX_STORE/*-garbage? | wc -l) = 1 ]]; then
|
|
exit 0
|
|
fi
|
|
sleep 1
|
|
done
|
|
exit 1
|
|
'';
|
|
}
|
|
EOF
|
|
)
|
|
|
|
expr2=$(cat <<EOF
|
|
with import ./config.nix; mkDerivation {
|
|
name = "gc-B";
|
|
buildCommand = ''
|
|
set -x
|
|
mkdir \$out
|
|
echo foo > \$out/bar
|
|
|
|
# Wait for the first build to finish
|
|
cat "$fifoLock"
|
|
'';
|
|
}
|
|
EOF
|
|
)
|
|
|
|
nix build --impure -v -o $TEST_ROOT/result-A -L --expr "$expr" \
|
|
--min-free 1000 --max-free 2000 --min-free-check-interval 1 &
|
|
pid1=$!
|
|
|
|
nix build --impure -v -o $TEST_ROOT/result-B -L --expr "$expr2" \
|
|
--min-free 1000 --max-free 2000 --min-free-check-interval 1 &
|
|
pid2=$!
|
|
|
|
# Once the first build is done, unblock the second one.
|
|
# If the first build fails, we need to postpone the failure to still allow
|
|
# the second one to finish
|
|
wait "$pid1" || FIRSTBUILDSTATUS=$?
|
|
echo "unlock" > $fifoLock
|
|
( exit ${FIRSTBUILDSTATUS:-0} )
|
|
wait "$pid2"
|
|
|
|
[[ foo = $(cat $TEST_ROOT/result-A/bar) ]]
|
|
[[ foo = $(cat $TEST_ROOT/result-B/bar) ]]
|