Dag-Erling Smørgrav wrote: > Maxim Sobolev <sobomax_at_portaone.com> writes: > >>Well, my knowelege about internals of software RAID controllers is >>quite limited, but as long as I know they are no more than BIOS with >>UI for setting up RAIDs and interface to main BIOS that hides internal >>RAID structure allowing to boot off the RAID. Also they provide some >>persistent storage for RAID configuration, I assume either in some >>controller's NVRAM or on the HDDs. > > > The configuration is always stored on-disk, otherwise it wouldn't be > possible to recover from controller failure. > > >>Therefore, the same set of GEOM >>RAID modules can work with different software RAID controllers (SCSI, >>ATA, SATA etc) if there will be a standard way to extract this info >>from the controller's driver, and present it in some common >>format. That's what I am talking about. > > > You're kicking down open doors. This problem has already been solved > for Vinum, which is conceptually identical from a GEOM point of view. Nah. As I said there should be some standard way to extract RAID configuration info out of controller's driver in controller-independent format. -MaximReceived on Wed Jun 23 2004 - 12:46:07 UTC
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