Sorry for the delay. Thanks for the reply. You're correct, there is no hardware RAID in the available lsdrv; I've removed each drive from its housing in the controller because it's Thunderbolt-only, Thundderbolt is borked on OSX here, and I'm rescuing on Linux. I appreciate your diagnosis and will try, and will write back. On 14 March 2017 at 22:56, NeilBrown <neilb@xxxxxxxx> wrote: > On Tue, Mar 14 2017, Alfred Matthews wrote: > >>> Does >>> dmraid -b /dev/sda /dev/sdb /dev/sdc >>> tell you anything useful? >>> >> >> # dmraid -b /dev/sdb /dev/sdc >> /dev/sdc: 5860533168 total, "WD-WCAWZ2927144" >> /dev/sdb: 5860533168 total, "WD-WCAWZ2939730" > > > No, not useful. > > Your other output also doesn't show anything interesting. > I had another look at the lsdrv output you showed before and I'm > wondering if there really is anything "hardware RAID" here at all. > > Both drives (sdb and sdc) are partitioned into a 200MB EFI partition, a > 2.75TB hfsplus (Apple file system) / unknown partition, and a 128M > hfsplus boot partition. > > Maybe the two 2.75TB paritions were raided together. > sdc looks like the "first" device if this were the case. > Try: > > mdadm --build /dev/md0 --level=0 -n2 --chunk=512M /dev/sdc2 /dev/sdb2 > > Then try fsck.hfs of hpfsck ... in the "hfsplus" package on Debian. > hpfsck /dev/md0 > maybe. > > NeilBrown -- Alfred S. Matthews Software, Visuals, Music Atlanta, Georgia, US +1.337.214.4688 -- 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
