I've just experimented locally with lxd itself and have deleted two
instances. While no processes/nics are left behind, the containers are
not purged:
$ lxc list --debug
2015/05/06 14:27:00 fingering the daemon
2015/05/06 14:27:00 raw response:
{"type":"sync","status":"Success","status_code":200,"metadata":{"api_compat":1,"auth":"trusted","config":{"trust-password":false},"environment":{"backing_fs":"btrfs","driver":"lxc","kernel_version":"3.19.0-16-generic","lxc_version":"1.1.2"}}}
2015/05/06 14:27:00 pong received
2015/05/06 14:27:00 raw response:
{"type":"sync","status":"Success","status_code":200,"metadata":[]}
+------+-------+------+------+-----------+
| NAME | STATE | IPV4 | IPV6 | EPHEMERAL |
+------+-------+------+------+-----------+
+------+-------+------+------+-----------+
$ lxc launch images:ubuntu/vivid/i386 ubuntu-32-2
Creating container...error: Container exists
$ ls /var/lib/lxd/lxc/
lxc-monitord.log ubuntu-32 ubuntu-32-2
Not sure if it's the same for you, but for me it's likely a systemd/lxc/btrfs
issue:
$ btrfs sub list .
[...]
ID 586 gen 303191 top level 560 path
var/lib/lxd/lxc/ubuntu-32/rootfs/var/lib/machines
ID 587 gen 303187 top level 560 path
var/lib/lxd/lxc/ubuntu-32-2/rootfs/var/lib/machines
Looks like the database isn't cleared either:
$ sqlite3 lxd.db .dump
INSERT INTO "containers_config"
VALUES(1,1,'volatile.eth0.hwaddr','00:16:3e:c0:c9:ce');
INSERT INTO "containers_config"
VALUES(2,2,'volatile.eth0.hwaddr','00:16:3e:ab:ac:24');
[...]
INSERT INTO "containers_profiles" VALUES(1,1,1,1);
INSERT INTO "containers_profiles" VALUES(2,2,1,1);
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https://bugs.launchpad.net/bugs/1447127
Title:
Terminated LXD instances processes stick around
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