Is it a problem when the system believes a device to be rotational, but it is SSD really? The system is:
- Ubuntu 18.04
- KVM virtualized
- I have /dev/vda as "local", /dev/vdb as "isilon"; I'm interested primarily in vda (see background below)
- The provider says "[/dev/vda is] a SSD raid 6 array within the HV"
cat /sys/block/vd?/queue/rotational 1 1
lsblk -d -o name,rota NAME ROTA sr0 1 vda 1 vdb 1
it's fast (dd random test according to https://serverfault.com/questions/551453/how-do-i-verify-that-my-hosting-provider-gave-me-ssds/551495#551495; takes 1.379s; However, it's emtpy still)
- driver: virtio_blk
Is this configured correctly? Should I worry once there's data, and Elasticsearch running on /dev/vda (or /dev/vdb)?
Background: I'm installing elsasticsearch and was checking if the SSD scheduler is correct, but as the system doesn't see the disks as SSD, it comes back with