Ticket #12025 (closed defect: fixed)
'Solid State Disk' setting not detected by Linux guest => fixed in SVN
|Reported by:||jimav||Owned by:|
If the "Solid State Disk" check-box is checked for a VM's (vdi) disk, a Linux guest still thinks it is a rotational disk. This prevents the guest OS from issuing Trim commands, etc. The client is running Ubuntu 13.04, kernel 3.8.0
The actual physical disk in the host is in fact an SSD (though that should not matter).
STEPS TO REPRODUCE:
- Install Ubuntu 13.04 in guest
- In Settings->Storage->Controller:SATA->xxx.vdi, check the "Solid-state drive" box.
- Start the guest and open a terminal window
- Cat /sys/block/sda/queue/rotational
Actual results: 1
Expected results: 0
The same Ubuntu system correctly detects SSDs on bare metal, so VirtualBox must be (not) doing something which prevents the guest from recognizing the SSD designation.
I will attach the host Log file and a copy of the output from "dmesg" in the guest showing detection of /dev/sda
- Summary changed from 'Solid State Disk' setting not detected by Linux guest to 'Solid State Disk' setting not detected by Linux guest => fixed in SVN