Hi, I'm looking for advice to not mess up my migration. because unfortunately i miss drive I wanna migrate all my data from a raid 5 of 4x2TB (actually 3 because i'm degraded right now) to a raid 6 of 4x4TB so exactly i got : - raid 5, should be 4 disk of 2T but got problem and so right now it's just 2x2T and a 2Tb disk image in a 4T disk (the raid crashed and is not start right now but is clean) - 2 disk of 4TB - the raid 5 use lvm2 on top of mdadm I want a raid 6 so i thought i could create a raid 6 degraded with the 2x4TB and after copy the data to this new raid and after add the third 4TB and finally add the 2 2TB as a raid 0 to get a 4TB I know it's an ideal solution to get 3x4TB + 2x2TB to do my raid but it give me time to invest. So my question is : - is it a really bad idea ? - do you have a better idea? solution ? - maybe i can migrate instead of copy a raid to another ? thank you very much Math -- 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