On Wed, June 24, 2009 8:35 am, Tirumala Reddy Marri wrote: > All, > I started RAID-5 creation using mdadm command. While recovery is > happening I tried to install file system . I see intermittent crash . > And crash doesn't happen at fixed location. Any clue what could be the > problem? How does the read/writes to MD driver handled while RAID-5 is > under building. Can you describe exactly what you mean by "crash" ?? The raid5 driver normally has no problems handling writes while it is resyncing. It has a 'stripe_cache' which is used to synchronise regular IO with resync IO. NeilBrown -- 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