On Saturday January 21, andy.gajetzki@xxxxxxxxx wrote: > Hi there, I recently had a disk go bad in a linear RAID built with > mdadm. The particular disk that failed was the last device of the > RAID. I am curious about how devices are utilized in a linear RAID. > Would the md be filled sequentially from device 1 upto 5? In other > words, what are the odds that the last disk was "empty" when it went > south? How the space is used depends on the filesystem you had created on the device. Many filesystems tend to spread data out so there is plenty of room to insert new data 'close' to related data. So if your filesystem was more than about 10% full, there if a very good chance that a significant fraction was in that last device, and even if it was less full than that, their is at least a fair chance that you have lost a reasonable amount of data. 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
