Dear Andreas, In message <20160516083903.GA29380@xxxxxxxxxxxxxxx> you wrote: > > You are using your disks in alphabetical order, are you sure this is > the same order your RAID originally used? Maybe the drive letters > changed? Yes, this is one thing I am absolutely sure about. I have the mapping of the disk serial numbers from initial install, and I verified that the drive order is still the same. > You found LABELONE on sda, which is your first drive (Device Role 0) > in your RAID (see mdadm --examine after you create it), but when I > create a new RAID based on loop devices, pvcreate and vgcreate it, > the LABELONE actually appears on the 2nd drive (Device Role 1). Thi sis strage; I see you are using 6 disks and the same stripe size, so I would also expect a layout like yours. OK, I need to experiment a bit... > So I assume in the default left-symmetric layout in RAID6, the first chunk > of the first disk actually ends up being a parity chunk...? I'm not too > sure about this either right now. ;) Hm... is --data-offset the only parameter I can play with? (except for variations of drive order, which appear to make no sense to me as I'm sure I have it correct). Then I could also start a brute force approach and just try out all possible values until I gind a match ;-) Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@xxxxxxx [Braddock:] Mr. Churchill, you are drunk. [Churchill:] And you madam, are ugly. But I shall be sober tomorrow. -- 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
