Re: [PATCH] libmachdev: Install as translator when bootstrapping && fix rumpdisk injection

[Samuel Thibault]

Samuel Thibault, le dim. 15 nov. 2020 23:19:15 +0100, a ecrit:
> Damien Zammit, le lun. 16 nov. 2020 09:06:16 +1100, a ecrit:
> > On 16/11/20 8:16 am, Samuel Thibault wrote:
> > > wd1 at atabus7 drive 0
> > Do you have two controllers or one?  This looks like IDE (?)
> 
> I'm using 
> 
>  -device ahci,id=ahci1
>  -device ahci,id=ahci2
>  -drive id=boot,format=raw,file=/root/boot,cache=writeback,if=none
>  -drive id=root,format=raw,file=/home/hurd,cache=writeback,if=none
>  -device ide-hd,drive=boot,bus=ahci2.0
>  -device ide-hd,drive=root,bus=ahci2.1
> 
> (yes, it's an odd setup, that was meant to stress the ahci driver
> discovery).
> 
> > > wd1: <QEMU HARDDISK>
> > > wd1: drive supports 16-sector PIO transfers, LBA48 addressing
> > > wd1: 20480 MB, 41610 cyl, 16 head, 63 sec, 512 bytes/sect x 41943040 
> > > sectors
> > > wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
> > > wd1(ahcisata1:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 5 
> > > (Ultra/100) (using DMA)
> > That definitely looks like an AHCI controller with disk attached.
> > 
> > > opening /dev/wd1d
> > > could not open
> > > ext2fs: device:/dev/wd1: No such device or addressHmm, what does 
> > > showtrans say on your disk node?
> > 
> > > It seems rump didn't manage to open it, do you have an idea?
> > Perhaps your controller does not support DMA?
> 
> It's the qemu controller, I don't think there is any issue there.

I tried with

-drive format=raw,file=/root/boot,cache=writeback,index=0
-drive format=raw,file=/home/hurd,cache=writeback,index=1
-machine q35

instead, but got the same issue:

wd1 at atabus1 drive 0
wd1: <QEMU HARDDISK>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 20480 MB, 41610 cyl, 16 head, 63 sec, 512 bytes/sect x 41943040 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
wd1(ahcisata0:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100) 
(using DMA)

opening /dev/wd1d
could not open
ext2fs: device:/dev/wd1: No such device or address

Samuel