[SOLVED] How to turn on SSD emulation on existing vm that is not trim enable?

[wingyiulam]

Hi all,

How to turn on SSD emulation on existing vm that is not trim enable?

Thanks,
Wing

 

[rtorres]

You can double click on the existing hard drive on the VM in the Hardware tab and check mark 'Discard'.


Make sure you reboot the VM to apply changes. Although, I heard it's not necessary to enable TRIM as Proxmox does this automatically when using a scsi VM 'hard disk'. I enable just for good measure (and peace of mind)

 

[wingyiulam]

You can double click on the existing hard drive on the VM in the Hardware tab and check mark 'Discard'.

View attachment 70420
Make sure you reboot the VM to apply changes. Although, I heard it's not necessary to enable TRIM as Proxmox does this automatically when using a scsi VM 'hard disk'. I enable just for good measure (and peace of mind)

Thank you! Thanks for the clarification; I thought ssd emulation does trim.

 

[rtorres]

Thank you! Thanks for the clarification; I thought ssd emulation does trim.

I believe you would need to enable SSD as well.

Now I'm not too experienced with Proxmox configs, learning as I go but I believe if you include 'ssd=1' in the .conf that would enable SSD on that drive. I had to do this with one of my drives, I added the S/N manually and enabled SSD. You will need to add the VM # to the .conf - ie the VM with TrueNAS is 102 :







Please proceed with caution as I'm not too sure if it can cause issues on certain VMs if you 'suddenly' change the parameters of the drives in a VM.. I didn't have an issue with TrueNAS enabling after the fact of adding and configuring the drive with SSD=1.

Maybe someone with more knowledge can chime in.

 

[gfngfn256]

No need to go through hoops. In the (above) GUI, in Edit: Hard Disk, just click on Advanced & you will be able to set SSD emulation.

 

[wingyiulam]

No need to go through hoops. In the (above) GUI, in Edit: Hard Disk, just click on Advanced & you will be able to set SSD emulation.

SSD emulation is greyed on my end.

 

[leesteken]

SSD emulation is greyed on my end.

Use VirtIO SCSI (Single) instead of VirtIO Block. The latter always lags behind in features compare to the former.

 

[gfngfn256]

On a VirtIO Block device SSD emulation will not be available.

 

[wingyiulam]

Use VirtIO SCSI (Single) instead of VirtIO Block. The latter always lags behind in features compare to the former.

all good! I only use VirtIO SCSI (Single) for VMs.

 

[gfngfn256]

all good! I only use VirtIO SCSI (Single) for VMs.

As your image shows the Hard Disk in question is virtio0 - so NO - its using VirtIO Block

 

[Azunai333]

No you don't. That's only the controller.
Attach the hdd to it:

 

[leesteken]

all good! I only use VirtIO SCSI (Single) for VMs.

You are not connecting the virtual drives via SCIS. You are using virtio instead, which is VirtIO Block instead. That's why you don't have the option.

 

[gfngfn256]

To change:

1. Shutdown VM
2. Detach the drive
3. Edit Unused disk & reattach using the SCSI bus

 

[wingyiulam]

Thanks all, it works; I am very appreciated.

Wing

 

[gfngfn256]

ALWAYS HAVE BACKUPS WHEN DOING SUCH CHANGES!!
Although most likely you won't have a problem.

EDIT: Happy you got it working. Maybe tag mark the thread-title with [SOLVED], (upper right hand corner under title).

 

[wingyiulam]

ALWAYS HAVE BACKUPS WHEN DOING SUCH CHANGES!!
Although most likely you won't have a problem.

EDIT: Happy you got it working. Maybe tag mark the thread-title with [SOLVED], (upper right hand corner under title).

is this what you meant? I am sorry, I am so new to proxmox; I only have a month of experience! I wanna make sure I am doing right!

 

[gfngfn256]

is this what you meant?

No. Its on the dropdown before the Thread-title. You've just added a regular tag.

 

[wingyiulam]

No. Its on the dropdown before the Thread-title. You've just added a regular tag.

found it! Thank you!