How to disable TRIM for a SSD permanently ?

[JuergenF]

Spec: Mini PC RM02 from HUNSN, Intel Core I5 8365U, 8GB DDR4, 256GB SSD, 6 Intel I211-AT Gigabit Nics

Using macOS i downloaded the latest VGA installer (OPNsense-21.1-OpenSSL-vga-amd64.img.bz2), extracted it, and then used balenaEtcher to write the image to an USB flash drive.

I booted the HUNSN PC via the USB flash drive to the OPNsense live environment and installed OPNsense with no issue.

After rebooting it came up fine and i began configuring OPNsense via the GUI. Everything was going great.

Then after another reboot i got lots of

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ahcich0: Timeout on slot ….
ada0:ahcich0:0:0:0): WRITE_FPDMA_QUEUED …
ada0:ahcich0:0:0:0): CAM status: Command timeout …
ada0:ahcich0:0:0:0): Retrying command …
messages.

And from than on i got these message after every boot.

After a research in this forum i found that disabling TRIM for the SSD could be the solution.

I followed the tip to modify /usr/local/etc/rc regarding disabling TRIM via tunefs -t disable /dev/gpt/rootfs.
(where /dev/gpt/rootfs is the filesystem listed in /etc/fstab) then reboot.

That solved the problem for me.

But after updating OPNsense to the current version i had the old /usr/local/etc/rc and TRIM was enabled again.


The camcontrol command shows the following information

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root@OPNsense:~ # camcontrol devlist
<SATA SSD SBFM01.3>                at scbus0 target 0 lun 0 (ada0,pass0)


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root@OPNsense:~ # camcontrol identify ada0 | grep TRIM
Data Set Management (DSM/TRIM) yes

It seems the that SSD does not support TRIM but i dont know why TRIM is set to "yes".

Is it possible to disable TRIM for the SSD permanently ?

Any help is appriciated.

Best regards
Jürgen

[Patrick M. Hausen]

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tunefs -t disable / should do the trick. Possibly you will need console access and boot into single user mode, so the filesystem is still mounted read-only.

I assume you did a standard install on UFS.

[JuergenF]

I booted into single user mode and typed in

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# tunefs -t disable /
tunefs: issue TRIM to the disk remains unchanged as disabled
tunefs: file system reloaded

I exit the single user mode and started the firmware update via the WebGUI.

After another reboot i could access the firewall without any error messages.

Thank you very much for your quick and competent support.

[Pocket_Sevens]

Hi @JuergenF - where did you see these messages?  Were they on the console on bootup or were they in the log? 

Thanks.

[JuergenF]

Hi Pocket_Sevens,
they had been displayed on the console after entering the command.