sata drive passthrough

[Aleksej]

Hi all.

I read a lot, but cannot find any information about how to passthrough a physical drive to vm.
Actually i need this to update firmware on it (crucial mx500).
passing /dev/disk/by-id (or by-path) shows in VM as qemu scsi harddisk or qemu harddisk (with sata not scsi).

but i need to see in vm it as physical drive like on host. is it really to do?

for linux there is no ability to make full trim and update firmware on crucial mx500 drives.
host is in other country now, so i cannot reach it to detach disk and make things with notebook.

blkdiscard -s /dev/sda

returns

blkdiscard: /dev/sde: BLKSECDISCARD ioctl failed: Operation not supported

so i have to zeroout it, but as i read blkdiscard -z is not actually the same as trim.

thank you a lot.

 

[_gabriel]

i need this to update firmware on it (crucial mx500).
passing /dev/disk/by-id (or by-path) shows in VM as qemu scsi harddisk or qemu harddisk (with sata not scsi).
but i need to see in vm it as physical drive like on host. is it really to do?

You can't.

Flash it directly under Linux seems possible, 1st Web search :
https://medium.com/@vdboor/upgrading-crucial-firmware-on-linux-76056254539

 

[leesteken]

I read a lot, but cannot find any information about how to passthrough a physical drive to vm.
Actually i need this to update firmware on it (crucial mx500).

Either do it on bare metal or passthrough the whole SATA controller. Disk passthroug won't work as you already found out.
Best to do bare metal. Does the firmware update come with a bootable image or does it need Windows? Maybe put the drive in a Windows machine if that's the case.