I don't know that it makes any sense to run a TRIM/discard function in a virtual file system. It only makes sense for the command to be applied directly to the disk at the hardware I/O level.
So, if you run the command on your HostOS regularly, it should addres the needs for all GuestOS as well as the HostOS. Tony On Wed, Oct 1, 2014 at 1:19 PM, George Shuklin <george.shuk...@gmail.com> wrote: > It's better to name it 'discard', because TRIM a very specific ATA command. > It done completely different in SCSI and slightly different in SD cards. But > linux call it 'discard', or, to be precise, BLKDISCARD (name of ioctl). > > > On 10/01/2014 02:21 AM, Brian Rak wrote: >> >> Are there any plans to bring trim support to Virtio-blk? We've got a >> couple things that would be made nicer by having working trim support. >> >> I see that it's implemented in virtio-scsi, but there's a decent >> performance hit for switching over to that. >> > >
