Patrick Welche <prlw1%cam.ac.uk@localhost> writes: > On Thu, Jan 10, 2013 at 02:41:16AM +0000, Taylor R Campbell wrote: >> If raid1 has partitions other than raid1a, then you presumably don't >> want to overwrite the disklabel, so you'll probably want to skip the >> first two sectors on disk, or use the start of the disk for a non-cgd >> partition. If you want cgd over all of raid1, then you can configure >> cgd0 on raid1d instead of raid1a and it should all work. > > Good idea - use raid1d instead of raid1a. I just disklabel -W raid1 > (thank you Michael) and did the usual. You can get into the amusing > situation where you can't write the disklabel on cgd0 because that > would overwrite the disklabel on raid1a, yet a valid disklabel on > cgd0 is the check for a valid passphrase (ie you even get surprised > simply setting up a cgd regardless of "scrubbing") It seems safest and least confusing to make a raid1a that starts at 64 (avoid anything not a reasonably large power of 2 due to larger physical sectors) and make the cgd out of that.
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