On Jan 23 10:59, Damien Hedde wrote: > Hi all, > > We are currently looking into hotplugging nvme devices and it is currently > not possible: > When nvme was introduced 2 years ago, the feature was disabled. > > commit cc6fb6bc506e6c47ed604fcb7b7413dff0b7d845 > > Author: Klaus Jensen > > Date: Tue Jul 6 10:48:40 2021 +0200 > > > > hw/nvme: mark nvme-subsys non-hotpluggable > > > > We currently lack the infrastructure to handle subsystem hotplugging, so > > disable it. > > Do someone know what's lacking or anyone have some tips/idea of what we > should develop to add the support ? > > Regards, > -- > Damien >
That's not entirely true. The *subsystem* is non-hotpluggable, but individual controllers can be hotplugged. Even into an existing subsystem. However, you cannot hotplug pci devices unless you set up a pcie root port. Say, -device "pcie-root-port,id=pcie_root_port0,chassis=1,slot=0" -device "nvme,id=nvme0,serial=nvme0,bus=pcie_root_port0" nvme0 can then be removed with device_del and added back as a new device with device_add.
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