On Thu, July 9, 2009 1:37 pm, Tirumala Reddy Marri wrote: > Hi Niel, > > I am wondering what is the priority between RAID-5 recovery and input IO > from application. > I am seeing these filesystem errors when RAID-5 recovery is going on I > tried to install ext3 file-system > and send data to /mnt/tmpmnt(/dev/md0 mount point) using "dd" command. I > noticed that when amount of data is less than > RAID-5 recovery size no file system errors seen. When amount of data > copied crosses RAID-5 recovery size I am seeing > file-system errors. I'm not sure what you mean by "priority". application writes go to the stripe-cache. recovery writes go to the stripe-cache data from the stripe-cache is written to the devices. there is no really issue of 'priority'. Just interlocking to make sure they don't both updates the same block at the same time, and they don't. 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
