On 01/12/14 09:08, Robin Hill wrote: > If it is doable (see comment above), it'll be simpler to just > partition the disks to the final size (or skip partitioning at all) > - md will quite happily accept larger devices added to an array > (though it doesn't use the extra space). Otherwise, your initial > steps are correct - though if you have a spare bay (or even a > USB/SATA adapter), you can add the drive as a spare and then use > "mdadm --replace" (you may need a newer version of mdadm for this) > command to flag one of the existing array members for replacement. > This will do a direct copy of the data from the existing disk to > the new one and is quicker (and safer) than fail/add. I upgraded a (raid 1) system by just adding the new, larger, disk. I think I swapped a 500Gb for a 1TB, so replaced my 400Gb partitions with 900Gb partitions. I then grew the array, followed by growing the partition. Worked fine. Cheers, Wol -- 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