On Thu, Sep 4, 2014 at 9:59 AM, Lamar Owen <lowen at pari.edu> wrote: > >> > Of course; but in the context of an MD RAID device with member devices as > raw disks I would not expect a partition table of any kind, GPT or > otherwise. Whether it can be there or not is not my point; it's whether > it's expected or not. > > Now, for C6 the default RAID superblock is version 1.2; but if you were to > create a version 1.1 superblock it would go on the very first sector of the > raw device, and would overwrite the partition table. (The 1.2 superblock > goes 4K in from the first sector; prior to 1.1 the superblock went to the > last sector of the drive). Does that mean autodetection/assembly would be possible with 1.2 but not 1.1? I've always considered that to be one of the best features of software raid. > Of course, ext4 at least for block group 0 skips the first 1k bytes..... How does this mesh with the ability to mount a RAID1 member as a normal non-raid partition? I've done that for data recovery but never knew if it was safe to write that way. -- Les Mikesell lesmikesell at gmail.com