When creating new Linux virtual machines using recent (>= 2014) distributions in VMware ESXi 5.5, should they mount their filesystems with the
discard option ?
I make the assumption that the VM's admin does not necessarily know what is the actual underlying storage and that the VM is using whatever is the recommended "virtual controller" and I hope/suspect that if the VM sends out
TRIM commands they could be useful with thin virtual disks (even if they are on non-SSD storage) or with thick virtual disks on SSD storage.
discard mount option actually do something when used in an ESXi VM (eg. even if the virtual controller is a SCSI one and not a SATA one) ?
Does vSphere >= 5.5 do anything when the VM uses such