My drives are not showing up when connected to my Vantec 4-Channel 6-Port SATA 6GB/S PCIe RAID Host Card with HyperDuo Technology (UGT-ST644R.  When i go to System Devices i can see the controller in a IOMMU group.

 

IOMMU group 10:[8086:8c56] 00:1f.0 ISA bridge: Intel Corporation C226 Series Chipset Family Server Advanced SKU LPC Controller (rev 05)

[8086:8c02] 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)

[8086:8c22] 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)

 

But when i go to add the disk to the array it doesnt see them.  Can someone please hel; 

Edited December 5, 20196 yr by [email protected]

That is not your Vantec card, but the motherboards controller.

Looks like the Vantec card uses a Marvell controller and that have been troublesome in later kernels. Adding iommu=pt in the syslinux.conf might help, if not, you have to disable vt-d.

I can disable vt-d but i am unfamiliar with adding iommu=pt in the syslinux.conf. Can you explain how to do that or point to a place that can?

1 hour ago, [email protected] said:

I can disable vt-d but i am unfamiliar with adding iommu=pt in the syslinux.conf. Can you explain how to do that or point to a place that can?

Edit syslinux.cfg in the syslinux folder on your boot flash drive.

 

Add iommu=pt to the append line to the desired boot mode(s) so it looks something like this:

 

default menu.c32
menu title Lime Technology, Inc.
prompt 0
timeout 50
label unRAID OS
  menu default
  kernel /bzimage
  append initrd=/bzroot iommu=pt
label unRAID OS GUI Mode
  kernel /bzimage
  append initrd=/bzroot,/bzroot-gui
label unRAID OS Safe Mode (no plugins, no GUI)
  kernel /bzimage
  append initrd=/bzroot unraidsafemode
label unRAID OS GUI Safe Mode (no plugins)
  kernel /bzimage
  append initrd=/bzroot,/bzroot-gui unraidsafemode
label Memtest86+
  kernel /memtest