Re: Sector offset values for softraid volumes

2013-08-05 Thread Erling Westenvik
On Sun, Aug 04, 2013 at 06:24:33AM -0700, Chris Cappuccio wrote: > Erling Westenvik [erling.westen...@gmail.com] wrote: > > > > physical disks: > > sd0a: 64 + N-64 > > sd1a: 64 + N-64 > > RAID 1 volume: > > sd2a: 64 + 64 + N-128 > > CRYPTO volume: > > sd3a: 64 + 64 + 64 + N-196 > > > > Th

Re: Sector offset values for softraid volumes

2013-08-04 Thread Chris Cappuccio
Erling Westenvik [erling.westen...@gmail.com] wrote: > > physical disks: > sd0a: 64 + N-64 > sd1a: 64 + N-64 > RAID 1 volume: > sd2a: 64 + 64 + N-128 > CRYPTO volume: > sd3a: 64 + 64 + 64 + N-196 > > The space wasted on large disks is negligible but I would really like to > know at which

Re: Sector offset values for softraid volumes

2013-08-03 Thread Nick Holland
On 08/02/13 12:06, Erling Westenvik wrote: ... > The space wasted on large disks is negligible but I would really like to > know at which level the 64 sector offset may be set to 0. yes. two offsets, 128 sectors * 0.5k/sector = 64k. Now, I probably appreciate the value of 64k more than most peop

Re: Sector offset values for softraid volumes

2013-08-02 Thread James Griffin
Fri 2.Aug'13 at 18:07:17 +0200, Erling Westenvik > Not sure how to express myself here, but consider preparing a physical > disk (sd0) for FDE. We initialize the disk: > > # fdisk -iy sd0 > # printf "a\n\n\n\nRAID\nw\nq\n\n" | disklabel -E sd0 > # bioctl -c C -l /

Sector offset values for softraid volumes

2013-08-02 Thread Erling Westenvik
Not sure how to express myself here, but consider preparing a physical disk (sd0) for FDE. We initialize the disk: # fdisk -iy sd0 # printf "a\n\n\n\nRAID\nw\nq\n\n" | disklabel -E sd0 # bioctl -c C -l /dev/sd0a softraid0 This yields a virtual disk sd1 with an "a" partition of type RAID that has