On 11/18/2010 10:25 AM, G, Sushma wrote: > Hi, > > I wanted to know if there is a way to activate a degraded array be default. > > In a scenario where OS is installed on a MD R1 array, with no spares configured, if a physical drive fails is there a way to still boot in to OS, without having to configure a hot spare? > Also, is R5 different in any way, in the same scenario mentioned above ( R5 in degraded mode)?" > > Setup: > Create a R1 using 2 sata disks, using mdadm with SLES 11 SP1 Operating system. > Once OS is installed, shut down the system and fail a drive. now try to boot up the OS. > > OS boot fails because the RAID is inactive as the VD is degraded. Look at the kernel command line options for MD, particularly "md-mod.start_dirty_degraded". HTH, Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html