3979c15f66
Change-Id: I67303d07aee931d19b3a9ae1e618d22fc6de9f58 Signed-off-by: Cunyin Chang <cunyin.chang@intel.com>
956 B
NVMe Hotplug
At the NVMe driver level, we provide the following support for Hotplug:
-
Hotplug events detection: The user of the NVMe library can call spdk_nvme_probe() periodically to detect hotplug events. The probe_cb, followed by the attach_cb, will be called for each new device detected. The user may optionally also provide a remove_cb that will be called if a previously attached NVMe device is no longer present on the system. All subsequent I/O to the removed device will return an error.
-
Hot remove NVMe with IO loads: When a device is hot removed while I/O is occurring, all access to the PCI BAR will result in a SIGBUS error. The NVMe driver automatically handles this case by installing a SIGBUS handler and remapping the PCI BAR to a new, placeholder memory location. This means I/O in flight during a hot remove will complete with an appropriate error code and will not crash the application.
@sa spdk_nvme_probe