On 06/08/20 04:22, Ming Lei wrote: >> Could you please let me know is there any another way where we can get the >> VM UUID info with the help of blkcg. > As Tejun suggested, the mapping between bio->bi_blkg->blkcg and the > unique ID could be built in usage scope, such as fabric > infrastructure, something like > xarray/hash may help to do that without much difficulty. So do you suggest adding one (or actually many) driver-specific files in /sys/bus/pci/drivers/lpfc or something like that? That seems very much inferior to just sticking it into blkcg. Even though this is only implemented by lpfc, other FC drivers will follow suit. Paolo
