I am testing the
mdadm Linux tool in order to obtain metadata from each individual disk of a RAID array.
So I have created a RAID array on a IBM Server (model IBM X3400 Dumpster Server, a Xeon E5410 Quadcore) using its own RAID controller (Adaptec). The array was created via BIOS tool (Ctrl+A when booting), named "IBM ServeRAID Configuration Utility" (well, not a very detailed tool, rather basic, but enough for me, I would say).
The configuration data for this newly created array is:
- RAID type: 5
- 4 x 500GB Hard Disk
- Chunk size (named strip size): 256 KB
System boots OK (using a common Ubuntu live distro), and now I can see a unpartitioned 1.3TB disk, as expected.
mdadm, I have extracted one of the 5x500GB disks, and plugged it (USB) on another computer running Ubuntu Linux (v20).
This is the output from
$ sudo fdisk -l /dev/sdd Disk /dev/sdd: 465.78 GiB, 500107862016 bytes, 976773168 sectors Disk model: ASM1156-PM Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 33553920 bytes
And this is the output from
luis@xubuntu:~$ sudo mdadm --examine /dev/sdd mdadm: No md superblock detected on /dev/sdd. luis@xubuntu:~$ sudo mdadm --examine /dev/sdd1 mdadm: cannot open /dev/sdd1: No such file or directory
What am I doing wrong?
mdadm supposed to yield metadata details (as shown here ) of the RAID Array on individual disks?
mdadm can not work with all RAID structures, and I am needing for another tool?
Of course, there are no partitions defined on `/dev/sdd' and so on, but I don't think they should be needed to get RAID details.