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docs(readme): an update's database copy is named db.sqlite3 only once it is complete

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The update steps wrote the copy straight to $b/db.sqlite3: the shell
creates the file before the copy runs, so a copy that failed left an
empty or partial db.sqlite3 next to the commit, which looks like a good
backup. Restoring from it put an empty database in place, and the panel
came back with no users, computes or VMs. The copy is now written to
db.sqlite3.part and renamed when it succeeds, in the Docker and the
installer steps.
This commit is contained in:
catborise 2026-11-06 09:12:20 +03:00
parent 90fed8160f
commit ce066052d9
1 changed files with 4 additions and 2 deletions
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6
README.md
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@ -580,7 +580,8 @@ git checkout master && git pull &&
docker compose build &&
docker compose stop -t 95 &&
docker compose run --rm --no-deps -T --entrypoint /srv/webvirtcloud/venv/bin/python3 webvirtcloud \
-c "import sqlite3,sys,tempfile; t=tempfile.mktemp(); sqlite3.connect('data/db.sqlite3').backup(sqlite3.connect(t)); sys.stdout.buffer.write(open(t,'rb').read())" > "$b/db.sqlite3" &&
-c "import sqlite3,sys,tempfile; t=tempfile.mktemp(); sqlite3.connect('data/db.sqlite3').backup(sqlite3.connect(t)); sys.stdout.buffer.write(open(t,'rb').read())" > "$b/db.sqlite3.part" &&
mv "$b/db.sqlite3.part" "$b/db.sqlite3" &&
docker compose up -d
```
@ -611,7 +612,8 @@ Move the `environment=` values of that config into `/etc/default/webvirtcloud` (
cd /srv/webvirtcloud &&
! systemctl is-active --quiet webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker &&
mkdir -m 700 "$b" &&
venv/bin/python3 -c "import sqlite3,sys; sqlite3.connect('db.sqlite3').backup(sqlite3.connect(sys.argv[1]))" "$b/db.sqlite3" &&
venv/bin/python3 -c "import sqlite3,sys; sqlite3.connect('db.sqlite3').backup(sqlite3.connect(sys.argv[1]))" "$b/db.sqlite3.part" &&
mv "$b/db.sqlite3.part" "$b/db.sqlite3" &&
cp -p webvirtcloud/settings.py /etc/nginx/conf.d/webvirtcloud.conf "$b"/ &&
{ [ ! -f /etc/default/webvirtcloud ] || cp -p /etc/default/webvirtcloud "$b"/; } &&
git rev-parse HEAD > "$b/commit" &&