Lennart Poettering
cfb67049ce
testcase_varlink_subscribe_devices in TEST-58-REPART spawns a varlinkctl
subscriber as a transient Type=notify service so systemd-run only returns
once varlinkctl has received the first reply (the "ready" sentinel or the
first "add"), guaranteeing the server-side sd-device monitor is up before
the test triggers any uevents. Loopback devices are created and detached
via systemd-dissect --attach / --detach against small ext4 images.
Covers:
1. "ready" sentinel arrives even on an empty initial set
2. losetup-style attach => "add" event with the expected node
3. detach => "remove" event with the expected node
4. 5 add/remove cycles in a row stay in sync
5. two coexisting loop devices each produce their own add/remove
6. a device that exists before the subscription starts shows up in
the initial enumeration, and "ready" arrives only after it
7. without subscribe:true the reply omits the "action" field
(back-compat for older clients)
The case is skipped inside containers since nspawn --private-network
filters the kernel uevent socket away from the subscribed server.
System and Service Manager
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