Re: Auto-assembled SW RAID in rescue mode

[Pascal Hambourg <pascal@plouf.fr.eu.org>]

Sorry for the late reply, I did not see your post until now.

Le 14/05/2018 à 12:37, Niclas Arndt a écrit :
> mdadm.conf says metadata=1.2.

So there is no risk that that the whole disk may be wrongly detected as 
a RAID member instead of the last partition.

> root@file2:~# blkid /dev/md2*
> /dev/md2: PTUUID="41440b8b-c8dc-489c-9f03-e85d8d309302" PTTYPE="gpt"
> /dev/md2p1: UUID="1c3642c6-c51c-4bd1-b952-5a77665e3d18" TYPE="ext4" PARTUUID="eb6ee4f4-95ec-449e-a9e8-1bca9a837afb"
> root@file2:~#
> root@file2:~# file -sk /dev/md2
> /dev/md2: DOS/MBR boot sector; partition 1 : ID=0xee, start-CHS (0x0,0,1),
> end-CHS (0x3ff,254,63), startsector 1, 4294967295 sectors, extended
> partition table (last) DOS/MBR boot sector GPT partition table, version
> 1.0, GUID: 41440b8b-c8dc-489c-9f03-e85d8d309302, disk size: 38676285440
> sectors of 512 bytes\012- data
> root@file2:~#
> root@file2:~# wipefs /dev/md2
> offset               type
> ----------------------------------------------------------------
> 0x200                gpt   [partition table]

There is no evidence that /dev/md2 contains a filesystem. So trying to 
mount it should have failed.