Greetings Artur thank you very much for helping me. See reply inline: > On 10/20/19 10:44 PM, hhardly@xxxxxxxxxxx wrote: >> With only the parent container assembled I have this: >> >> # cat /proc/mdstat >> Personalities : >> md0 : inactive sdc[0](S) >> 5201 blocks super external:imsm >> >> Is "inactive" a problem? Adding --run to the --assemble makes no >> difference. Is the small block count only for the superblocks? >> >> How can I assemble and access those Intel Matrix volumes? > > The "inactive" state is normal for containers. Try doing this now: > > # IMSM_NO_PLATFORM=1 mdadm --incremental /dev/md0 --run > > It should assemble both volumes as degraded. If that doesn't work, please > send > the output from "mdadm -E /dev/sdc". Adding --run didn't help: # IMSM_NO_PLATFORM=1 mdadm --incremental -e imsm -v /dev/md0 --run mdadm: /dev/md0 is not part of an md array. Here is the output you asked for, which shows does show the volumes. Any further assistance is greatly appreciated. # IMSM_NO_PLATFORM=1 mdadm -E /dev/sdc /dev/sdc: Magic : Intel Raid ISM Cfg Sig. Version : 1.3.00 Orig Family : ca956afe Family : ca956afe Generation : 00110f9d Attributes : All supported UUID : 4724d742:24d8ea31:7b833d5c:b82367ca Checksum : a52d91d6 correct MPB Sectors : 2 Disks : 2 RAID Devices : 2 [Volume1]: UUID : 7eb953ee:f73f5b59:46d4cb8c:0b6911e0 RAID Level : 1 Members : 2 Slots : [_U] Failed disk : 0 This Slot : ? Sector Size : 512 Array Size : 524288000 (250.00 GiB 268.44 GB) Per Dev Size : 524288264 (250.00 GiB 268.44 GB) Sector Offset : 0 Num Stripes : 2048000 Chunk Size : 64 KiB Reserved : 0 Migrate State : idle Map State : degraded Dirty State : clean RWH Policy : off [Volume2]: UUID : 941025e0:208ad897:1c941c20:2e5bd48e RAID Level : 1 Members : 2 Slots : [_U] Failed disk : 0 This Slot : ? Sector Size : 512 Array Size : 452474880 (215.76 GiB 231.67 GB) Per Dev Size : 452475144 (215.76 GiB 231.67 GB) Sector Offset : 524292360 Num Stripes : 1767480 Chunk Size : 64 KiB Reserved : 0 Migrate State : idle Map State : degraded Dirty State : dirty RWH Policy : off Disk00 Serial : 500WH18HEAL:0:0 State : active failed Id : ffffffff Usable Size : 976762766 (465.76 GiB 500.10 GB) Disk01 Serial : TF0501WH1NXL0Q State : active Id : 00000001 Usable Size : 976762766 (465.76 GiB 500.10 GB)