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<AttachedDevice discard="true" nonrotational="true" type="HardDisk" hotpluggable="false" port="0" device="0">
<Image uuid="{460a432f-g142-5a8b-df77-e12a3b0695cc}"/>
</AttachedDevice>
When i try to execute
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fstrim -v /
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fstrim: /: the discard operation is not supported
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hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: VBOX HARDDISK
Serial Number: VB4634c117-973718fa
Firmware Revision: 1.0
Standards:
Used: unknown (minor revision code 0x0028)
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 83886080
LBA48 user addressable sectors: 83886080
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 40960 MBytes
device size with M = 1000*1000: 42949 MBytes (42 GB)
cache/buffer size = 256 KBytes (type=DualPortCache)
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(cannot be disabled)
Queue depth: 32
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 128 Current = 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* Power Management feature set
* Write cache
* Look-ahead
* 48-bit Address feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
Checksum: correct
Thank you!