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Josh Siviour
344a490a70
buildDrives emitted every non-boot data volume as a bare -drive with no id= and no node-name=, so a stop/start (or reboot/resize) relaunch left the volume anonymous: device_del/blockdev-del had nothing to address, QEMU kept the NBD socket open, and DetachVolume stalled through nbdkit's full kill grace before giving up. Add -blockdev support to the QEMU config builder and use it for non-boot, non-EFI volumes, sharing the node-name/device-id/iothread-id naming and virtio-blk-pci device arguments with AttachVolume's hot-plug path so cold-boot and hot-attach can no longer drift apart. A data volume with no persisted HotplugPort now gets one allocated and written back during buildDrives instead of landing on an unplugged bus. Also raise unmountSealTimeout past viperblockd's kill grace (it runs the seal after the SIGKILL, so matching the grace meant an unmount that used the whole grace could never be observed as successful), and bound the e2e harness's forced teardown detach by the teardown deadline so a slow detach is reported as slow rather than as an unexplained leak.