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Bug #2051338
Comment #6

Comment 6 for bug 2051338

Revision history for this message

Yao Wei (medicalwei) wrote on 2024-03-06 (last edit on 2024-03-06): Re: Subiquity with autoinstall cannot pick a storage and install with IMSM (Intel Matrix Storage Manager) firmware RAID

subiquity-layout-compound.patch Edit (2.8 KiB, text/plain)

Turned out that, in filesystem controllers, it only picks all disks (without compound devices like RAID), so the layout mode only applies to simple disk devices, not compound devices like RAID or LVM. This I guess is to prevent some issues like installing into non-bootable RAID, setting up LVM over LVM for encryption setup, etc.

I've made the changes in the attachment in order to let auto layout detect the RAID disks, without considering about the other compound cases, therefore this patch is only a reference of my discovery and is not for production.

For reference, this is the result I got from Intel VROC from the patched subiquity to list all devices before match:
2024-03-06 01:18:43,971 INFO subiquity.server.controllers.filesystem:1418 all devices.....
2024-03-06 01:18:43,971 INFO subiquity.server.controllers.filesystem:1419 [
Raid(name='md125', raidlevel='raid0', devices={}, spare_devices={}, preserve=True, container=raid-md127, id='raid-md125'),
Raid(name='md127', raidlevel='container', devices=[disk-nvme2n1, disk-nvme3n1], spare_devices=[], preserve=True, metadata='imsm', id='raid-md127'),
Raid(name='md126', raidlevel='container', devices=[disk-nvme4n1, disk-nvme6n1], spare_devices=[], preserve=True, metadata='imsm', id='raid-md126'),
Disk(serial='KXG50ZNV256G_NVMe_TOSHIBA_256GB_77HS107ITNTT_1', wwn='eui.000000000000001000080d02002ac166', nvme_controller=nvme-controller-nvme6, path='/dev/nvme6n1', preserve=True, id='disk-nvme6n1', type='disk'),
Disk(ptable='gpt', serial='Micron_3400_NVMe_512GB_21122E618437_1', wwn='eui.000000000000000100a075212e618437', nvme_controller=nvme-controller-nvme5, path='/dev/nvme5n1', preserve=True, id='disk-nvme5n1', type='disk'),
Disk(serial='PC_SN730_NVMe_WDC_256GB_20333A801561_1', wwn='eui.e8238fa6bf530001001b448b49132209', nvme_controller=nvme-controller-nvme2, path='/dev/nvme2n1', preserve=True, id='disk-nvme2n1', type='disk'),
Disk(serial='PC_SN730_NVMe_WDC_256GB_20333A802075_1', wwn='eui.e8238fa6bf530001001b448b49132a14', nvme_controller=nvme-controller-nvme3, path='/dev/nvme3n1', preserve=True, id='disk-nvme3n1', type='disk'),
Disk(ptable='gpt', serial='PC_SN810_NVMe_WDC_512GB_23092V800479', path='/dev/sda', preserve=True, id='disk-sda', type='disk'),
Disk(ptable='gpt', serial='PM9C1a_Samsung_256GB_______S75JNE0W700023_1', wwn='eui.002538a7310004c9', nvme_controller=nvme-controller-nvme0, path='/dev/nvme0n1', preserve=True, id='disk-nvme0n1', type='disk'),
Disk(ptable='gpt', serial='PM9C1a_Samsung_256GB_______S75JNE0W700056_1', wwn='eui.002538a7310004ea', nvme_controller=nvme-controller-nvme1, path='/dev/nvme1n1', preserve=True, id='disk-nvme1n1', type='disk'),
Disk(serial='THNSN5256GPUK_NVMe_TOSHIBA_256GB_X65S11JQT18T_1', wwn='eui.00080d0200113fc5', nvme_controller=nvme-controller-nvme4, path='/dev/nvme4n1', preserve=True, id='disk-nvme4n1', type='disk')
]

Turned out that, in filesystem controllers, it only picks all disks (without compound devices like RAID), so the layout mode only applies to simple disk devices, not compound devices like RAID or LVM.  This I guess is to prevent some issues like installing into non-bootable RAID, setting up LVM over LVM for encryption setup, etc.

For reference, this is the result I got from Intel VROC from the patched subiquity to list all devices before match:
2024-03-06 01:18:43,971 INFO subiquity.server.controllers.filesystem:1418 all devices.....
2024-03-06 01:18:43,971 INFO subiquity.server.controllers.filesystem:1419 [
 Raid(name='md125', raidlevel='raid0', devices={}, spare_devices={}, preserve=True, container=raid-md127, id='raid-md125'),
 Raid(name='md127', raidlevel='container', devices=[disk-nvme2n1, disk-nvme3n1], spare_devices=[], preserve=True, metadata='imsm', id='raid-md127'),
 Raid(name='md126', raidlevel='container', devices=[disk-nvme4n1, disk-nvme6n1], spare_devices=[], preserve=True, metadata='imsm', id='raid-md126'),
 Disk(serial='KXG50ZNV256G_NVMe_TOSHIBA_256GB_77HS107ITNTT_1', wwn='eui.000000000000001000080d02002ac166', nvme_controller=nvme-controller-nvme6, path='/dev/nvme6n1', preserve=True, id='disk-nvme6n1', type='disk'),
 Disk(ptable='gpt', serial='Micron_3400_NVMe_512GB_21122E618437_1', wwn='eui.000000000000000100a075212e618437', nvme_controller=nvme-controller-nvme5, path='/dev/nvme5n1', preserve=True, id='disk-nvme5n1', type='disk'),
 Disk(serial='PC_SN730_NVMe_WDC_256GB_20333A801561_1', wwn='eui.e8238fa6bf530001001b448b49132209', nvme_controller=nvme-controller-nvme2, path='/dev/nvme2n1', preserve=True, id='disk-nvme2n1', type='disk'),
 Disk(serial='PC_SN730_NVMe_WDC_256GB_20333A802075_1', wwn='eui.e8238fa6bf530001001b448b49132a14', nvme_controller=nvme-controller-nvme3, path='/dev/nvme3n1', preserve=True, id='disk-nvme3n1', type='disk'),
 Disk(ptable='gpt', serial='PC_SN810_NVMe_WDC_512GB_23092V800479', path='/dev/sda', preserve=True, id='disk-sda', type='disk'),
 Disk(ptable='gpt', serial='PM9C1a_Samsung_256GB_______S75JNE0W700023_1', wwn='eui.002538a7310004c9', nvme_controller=nvme-controller-nvme0, path='/dev/nvme0n1', preserve=True, id='disk-nvme0n1', type='disk'),
 Disk(ptable='gpt', serial='PM9C1a_Samsung_256GB_______S75JNE0W700056_1', wwn='eui.002538a7310004ea', nvme_controller=nvme-controller-nvme1, path='/dev/nvme1n1', preserve=True, id='disk-nvme1n1', type='disk'),
 Disk(serial='THNSN5256GPUK_NVMe_TOSHIBA_256GB_X65S11JQT18T_1', wwn='eui.00080d0200113fc5', nvme_controller=nvme-controller-nvme4, path='/dev/nvme4n1', preserve=True, id='disk-nvme4n1', type='disk')
 ]