[Disks missing after upgrading to 6.7.0]

For future users with marvell controllers: Make sure you try both the chip specific intel/amd_iommu=pt and also generic iommu=pt because that was what worked for me. I am still able to use IOMMU with other hardware!

@SquidI understand the marvell controllers are not ideal but it came included with my server and I'd rather not purchase another raid controller and consume my only pcie slot.

 

Would be possible to automatically enable iommu=pt syslinux flags on future unraid releases if a marvell controller is detected?

[Disks missing after upgrading to 6.7.0]

Sorry for reviving old thread, but this problem is still active for me on 6.9.2.

It can be fixed by adding amd_iommu=off to the end of the Unraid OS syslinux configuration.
Both amd_iommu=pt and scsi_mod.use_blk_mq=1 did not work for me.

My question is: Will I still be able to use IOMMU? Is setting amd_iommu=off the same as turning it off in the bios? Or only for SATA?

HPE Microserver Gen10 with Opteron X3421

Marvell 88SE9230
Unraid 6.9.3