9

I want to emulate a SATA disk drive in QEMU to check a device driver I'm trying to develop. How can this be done? Would greatly appreciate your help.

Dragonight
  • 1,033
  • 2
  • 10
  • 20

2 Answers2

14

The Gentoo Wiki offers these parameters:

-drive id=disk,file=IMAGE.img,if=none \
-device ahci,id=ahci \
-device ide-hd,drive=disk,bus=ahci.0

Set emulation layer for an ICH-9 AHCI controller (not yet stable ) and use the specified image file for it. The AHCI emulation supports NCQ, so multiple read or write requests can be outstanding at the same time.

EDIT: A revision to the Wiki on 31 October 2018 suggests the AHCI controller may be stable now.

Marco Bonelli
  • 63,369
  • 21
  • 118
  • 128
mwfearnley
  • 3,303
  • 2
  • 34
  • 35
  • Is the drive auto-mounted at boot? Or do you have to manually mount the drive once Qemu has booted Linux? – Mike Stoddart May 29 '19 at 19:08
  • For me a device was automatically created but drive was not mounted. It will be visible with `lsblk`, you will need to format it (to ext4 for example) and mount it (normally to `/mnt/data`). This was useful for me https://www.digitalocean.com/community/tutorials/how-to-partition-and-format-storage-devices-in-linux – Gal Oct 28 '20 at 12:47
  • `ide-drive` is deprecated, use `ide-hd` instead, got `'ide-drive' is not a valid device model name` and found no explanation. [some details](https://github.com/ASoft-se/Gentoo-HAI/issues/57) – NiKiZe Jul 21 '21 at 22:23
  • 1
    @NiKiZe thanks, I see you've also edited the Gentoo Wiki page also. I've updated the command to match your change. – mwfearnley Jul 22 '21 at 11:44
3

When using i386 or x86_64 with Q35 machine type(-M q35), IDE disk has been AHCI by default.

BugMeNot114514
  • 69
  • 2