たしかSASボードは LSI SAS 9201-16e のはず。Debian10 で kernel 5.7 から 5.8 に変えたら動かなくなりました。ちょー。
あ、もうバグレポートあがってた。
https://bugzilla.kernel.org/show_bug.cgi?id=209177
lspci
07:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2116 PCI-Express Fusion-MPT SAS-2 [Meteor] (rev 02)
dmesg
[ 1.320718] mpt2sas_cm0: scatter gather: sge_in_main_msg(1), sge_per_chain(9), sge_per_io(128), chains_per_io(15) [ 1.320725] ------------[ cut here ]------------ [ 1.320730] WARNING: CPU: 1 PID: 111 at mm/page_alloc.c:4831 __alloc_pages_nodemask+0x290/0x300 [ 1.320730] Modules linked in: crct10dif_pclmul crct10dif_common ahci libahci mpt3sas(+) ehci_pci(+) xhci_pci(+) xhci_hcd ehci_hcd libata crc32c_intel lpc_ich i2c_i801 i2c_smbus tg3 raid_class scsi_transport_sas usbcore libphy scsi_mod ptp pps_core usb_common fan video [ 1.320737] CPU: 1 PID: 111 Comm: systemd-udevd Not tainted 5.8.0-0.bpo.2-amd64 #1 Debian 5.8.10-1~bpo10+1 [ 1.320738] Hardware name: FUJITSU PRIMERGY TX1310 M1/D3219-A1, BIOS V4.6.5.4 R1.10.0 for D3219-A1x 06/13/2018 [ 1.320739] RIP: 0010:__alloc_pages_nodemask+0x290/0x300 [ 1.320741] Code: 89 ef 89 ee 45 31 ed e8 8e c9 ff ff e9 f5 fe ff ff 48 89 c7 e8 71 42 fc ff e9 8c fe ff ff 81 e7 00 20 00 00 0f 85 57 ff ff ff <0f> 0b e9 50 ff ff ff 31 c0 e9 1b fe ff ff 65 48 8b 04 25 c0 7b 01 [ 1.320741] RSP: 0018:ffffaee7802fb950 EFLAGS: 00010246 [ 1.320742] RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000000000 [ 1.320743] RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000000 [ 1.320743] RBP: 000000000000000b R08: 0000000000000000 R09: ffffffffffffffff [ 1.320744] R10: ffff9ee0fb0b52d8 R11: ffff9eda07d08850 R12: ffffffffffffffff [ 1.320744] R13: 000000000075d000 R14: ffff9ee0f7dd90b0 R15: 0000000000000cc0 [ 1.320745] FS: 00007f9d1978ed40(0000) GS:ffff9ee100880000(0000) knlGS:0000000000000000 [ 1.320745] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.320746] CR2: 000055ab09755038 CR3: 00000007ae538005 CR4: 00000000001606e0 [ 1.320747] Call Trace: [ 1.320752] dma_direct_alloc_pages+0xf0/0x210 [ 1.320755] dma_pool_alloc+0xd9/0x1f0 [ 1.320756] ? dma_pool_create+0x15b/0x260 [ 1.320767] base_alloc_rdpq_dma_pool+0xe5/0x17e [mpt3sas] [ 1.320774] mpt3sas_base_attach.cold.68+0x387/0x1567 [mpt3sas] [ 1.320781] _scsih_probe+0x4dc/0x7f0 [mpt3sas] [ 1.320784] local_pci_probe+0x42/0x80 [ 1.320786] pci_device_probe+0xfc/0x1b0 [ 1.320790] really_probe+0x1c2/0x3e0 [ 1.320792] driver_probe_device+0xde/0x150 [ 1.320793] device_driver_attach+0x4f/0x60 [ 1.320795] __driver_attach+0x86/0x140 [ 1.320796] ? device_driver_attach+0x60/0x60 [ 1.320797] ? device_driver_attach+0x60/0x60 [ 1.320798] bus_for_each_dev+0x77/0xc0 [ 1.320800] ? klist_add_tail+0x3b/0x70 [ 1.320802] bus_add_driver+0x14d/0x1f0 [ 1.320803] ? 0xffffffffc058e000 [ 1.320804] driver_register+0x6b/0xb0 [ 1.320805] ? 0xffffffffc058e000 [ 1.320810] _mpt3sas_init+0x1a9/0x1000 [mpt3sas] [ 1.320812] do_one_initcall+0x46/0x200 [ 1.320813] ? 0xffffffffc058e000 [ 1.320814] ? perf_trace_initcall_level+0x130/0x130 [ 1.320816] do_init_module+0x5a/0x220 [ 1.320817] load_module+0x2335/0x25d0 [ 1.320820] ? __kernel_read+0x136/0x160 [ 1.320822] ? __do_sys_finit_module+0xa8/0x110 [ 1.320823] __do_sys_finit_module+0xa8/0x110 [ 1.320826] do_syscall_64+0x44/0xc0 [ 1.320829] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1.320830] RIP: 0033:0x7f9d19f78f59 [ 1.320831] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 07 6f 0c 00 f7 d8 64 89 01 48 [ 1.320832] RSP: 002b:00007ffd3659b788 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 1.320833] RAX: ffffffffffffffda RBX: 000055ab0971cfe0 RCX: 00007f9d19f78f59 [ 1.320833] RDX: 0000000000000000 RSI: 00007f9d19e7dcad RDI: 000000000000000e [ 1.320834] RBP: 00007f9d19e7dcad R08: 0000000000000000 R09: 0000000000000000 [ 1.320834] R10: 000000000000000e R11: 0000000000000246 R12: 0000000000000000 [ 1.320834] R13: 000055ab0970beb0 R14: 0000000000020000 R15: 000055ab0971cfe0 [ 1.320836] ---[ end trace 279a638a8a34dd1d ]--- [ 1.320898] mpt2sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:10791/_scsih_probe()!
(追記 2020.11.2)
とりあえずこれで動きました。
unraid.net