I have verified the fix for bionic and disco by doing netinstalls with apt-setup/proposed=true on the kernel command line with disk images that had had a raid6 with 0.90 metadata created on them and watching the output of wipefs $image outside of the VM. Immediatly before selecting the "write changes to disk" action in partman:
mwhudson@ringil:~/tmp/netinstall/bionic$ wipefs raid2.img
DEVICE OFFSET TYPE UUID LABEL
raid2.img 0x27fff0000 linux_raid_member 2ff715a9-0173-2508-14d5-894fb9296617
raid2.img 0x1fe dos
And immediately after:
mwhudson@ringil:~/tmp/netinstall/bionic$ wipefs raid2.img
DEVICE OFFSET TYPE UUID LABEL
raid2.img 0x1fe dos
I also checked the installed disk booted and the wipefs output inside the VM.
And the same for disco:
mwhudson@ringil:~/tmp/netinstall/disco$ wipefs raid3.img
DEVICE OFFSET TYPE UUID LABEL
raid3.img 0x27fff0000 linux_raid_member 2ff715a9-0173-2508-14d5-894fb9296617
mwhudson@ringil:~/tmp/netinstall/disco$ wipefs raid3.img
DEVICE OFFSET TYPE UUID LABEL
raid3.img 0x1fe dos
I have verified the fix for bionic and disco by doing netinstalls with apt-setup/ proposed= true on the kernel command line with disk images that had had a raid6 with 0.90 metadata created on them and watching the output of wipefs $image outside of the VM. Immediatly before selecting the "write changes to disk" action in partman:
mwhudson@ ringil: ~/tmp/netinstal l/bionic$ wipefs raid2.img 0173-2508- 14d5-894fb92966 17
DEVICE OFFSET TYPE UUID LABEL
raid2.img 0x27fff0000 linux_raid_member 2ff715a9-
raid2.img 0x1fe dos
And immediately after:
mwhudson@ ringil: ~/tmp/netinstal l/bionic$ wipefs raid2.img
DEVICE OFFSET TYPE UUID LABEL
raid2.img 0x1fe dos
I also checked the installed disk booted and the wipefs output inside the VM.
And the same for disco:
mwhudson@ ringil: ~/tmp/netinstal l/disco$ wipefs raid3.img 0173-2508- 14d5-894fb92966 17 ringil: ~/tmp/netinstal l/disco$ wipefs raid3.img
DEVICE OFFSET TYPE UUID LABEL
raid3.img 0x27fff0000 linux_raid_member 2ff715a9-
mwhudson@
DEVICE OFFSET TYPE UUID LABEL
raid3.img 0x1fe dos