On Thu, 01 Apr 2010 10:15:46 +0200 Hannes Reinecke <hare@xxxxxxx> wrote: > [Abstract] > This discussion will focus on the problem of correct request handling with virtual HBAs. > For KVM I have implemented a 'megasas' HBA emulation which serves as a backend for the > megaraid_sas linux driver. > It is now possible to connect several disks from different (physical) HBAs to that > HBA emulation, each having different logical capabilities wrt transfersize, > sgl size, sgl length etc. The 'megaraid_sas' emulation HBA tells the guests about such capabilities via the register, right? If so, the problem is that how to do it with hotplug on the host? > The goal of this discussion is how to determine the 'best' capability setting for the > virtual HBA and how to handle hotplug scenarios, where a disk might be plugged in > which has incompatible settings from the one the virtual HBA is using currently. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
