I am running Debian 8 on an Dell PowerEdge R420.
The OS is installed onto a INTEL SSDSC2BA800G3T SSD with firmware 5DV1DL03. The LVM is not configured, and the encryption is not enabled either.
The SSD is connected to a PERC H310 Mini (MegaRAID SAS 2008), and is in passthrough mode (meaning no RAID whatsoever). The firmware version of the controller is 2.121.14-3811.
I have tried configuring TRIM on this machine, but when I am running fstrim, it is telling me that the operation is not supported:
# fstrim -v /
fstrim: /: the discard operation is not supported
The SSD supports TRIM:
# hdparm -I /dev/sda | grep TRIM
* Data Set Management TRIM supported (limit 6 blocks)
* Deterministic read ZEROs after TRIM
Can you tell me if this controller is able to pass-through the TRIM commands to the SSD? Are there any other additional settings that need to be set?
Is there any workaround for enabling TRIM usage on these configurations.
My impression is that these configurations are less than two years old, which makes really weird of not being able to do a real passthrough one them.