On Tue, Jul 18, 2017 at 10:58 AM, Veljko <veljko3@xxxxxxxxx> wrote: > On 07/17/2017 12:16 PM, Veljko wrote: >> >> On 07/15/2017 02:12 AM, NeilBrown wrote: >> >>> So command should be >>> >>>>> dd if=/dev/md2 of=SOMEWHERE/SAFE bs=1M skip=5626590 >>> >>> >>> and expect it to create a 3M file. >>> >>> Use this 'skip' number of the 'seek' number later. >>> >>> NeilBrown >> >> >> Thanks, Neil, now it makes more sense. >> >> I tried to create new linear device, but mdadm is complaining about >> data-offset: >> >> # mdadm -C /dev/md4 -l linear -n 2 --rounding=1M -e 1.0 --data-offset=0 >> /dev/md2 /dev/md3 >> mdadm: invalid data-offset: 0 >> >> I'm using Debian 8.8 if it makes any difference. >> >> # mdadm -V >> mdadm - v3.3.2 - 21st August 2014 >> >> What could be the problem? > > > I noticed that md2 and md3 use 1.2 metadata. Can that be the issue? Trying > to create 1.0 metadata for md4? Any advice on this? -- 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
