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Why does VHI Customer Virtuozzo self service panel show VM volumes as HDD instead of NVMe

  • Updated
Applies to:
  • VHI
  • HDD
  • Disk Type
  • Web Panel
  • Virtual Disk
  • NVME

Clarification of HDD type on Virtuozzo Self Service Web Panel.

As seen here the Customer Virtuozzo Self Service Web Panel shows the Volume type as HDD.

However, in the admin panel disk type is shown as NVME as in this example node: jk1vzcmp05

So why is there a difference between the two views?
According to Virtuozzo Developers:

it is a device emulation type. We don't emulate SSD because it doesn’t make much sense as the storage is virtual anyway. It is not related to tier 0 or other issues, just the type of device that the VM guest OS sees.

There are two categories HDD/CDROM

     The virtual device is HDD, but it has a speed of storage over NVME.
     So this field currently indicates whether it is HDD or CDROM, it says nothing about device speed, so inside the VM guest, they will also see HDD.

So even if we change it in UI to SSD, the customer will find it inside the VM guest OS it will show as HDD.

In summary, we can state that it's a Volume type, not a disk type.

It's not an actual disk that is assigned to a volume. It is virtualized storage that emulates an HDD disk in terms of organization virtually however internally or physically it has a speed of storage over NVME.
Virtuozzo Admin Panel shows disk type because as if the hardware administrator needs to do maintenance on disk they need to know if the disk is an HDD or NVME.

Meanwhile, the Virtuozzo Customer Self Service Web Panel shows the Volume type that is it is a volume that has type HDD meaning it's a Virtual Hard Disk running over NVME internally.

For further confirmation from the Administration backend CLI, we can  run these commands to confirm that the hardware node is using NVME and that the NVME disk is mapped to chunk servers on which volumes are virtually created:

[root@jk1vzcmp05 ~]# nvme list
Node             SN                   Model                                    Namespace Usage                      Format           FW Rev
---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------
/dev/nvme0n1    19402420DCB6          Micron_2200_MTFDHBA512TCK                1         512.11  GB / 512.11  GB    512   B +  0 B   P1MU003
/dev/nvme1n1     A06F1445             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
/dev/nvme2n1     A06EEE87             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
/dev/nvme3n1     A06F0EAF             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
/dev/nvme4n1     19402420F85D         Micron_2200_MTFDHBA512TCK                1         512.11  GB / 512.11  GB    512   B +  0 B   P1MU003
/dev/nvme5n1     A06EF01F             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
/dev/nvme6n1     A06F0E53             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
/dev/nvme7n1     A06F145E             WUS3BA138C7P3E3                          1           3.84  TB /   3.84  TB      4 KiB +  0 B   R0112001
[root@jk1vzcmp05 ~]# vstorage -c JK1ERANYACL01 list-services
TYPE    ID      ENABLED                 STATUS                  DEVICE/VOLUME GROUP            DEVICE INFO                         PATH
CS      1182    enabled                 active [312235]         /dev/nvme7n1p1                 WUS3BA138C7P3E3                          /vstorage/fbe8925c/cs
CS      1183    enabled                 active [312167]         /dev/nvme6n1p1                 WUS3BA138C7P3E3                          /vstorage/7277a4ff/cs
CS      1184    enabled                 active [312248]         /dev/nvme5n1p1                 WUS3BA138C7P3E3                          /vstorage/40c872c2/cs
CS      1185    enabled                 active [311766]         /dev/nvme3n1p1                 WUS3BA138C7P3E3                          /vstorage/5db4ba14/cs
CS      1186    enabled                 active [312118]         /dev/nvme2n1p1                 WUS3BA138C7P3E3                          /vstorage/eb99501a/cs
CS      1187    enabled                 active [312038]         /dev/nvme1n1p1                 WUS3BA138C7P3E3                          /vstorage/55e1453f/cs
MDS     8       enabled                 active [414441]         /dev/md126                     Raid1 (nvme0n1p4,nvme4n1p4)         /vstorage/mds

 

Related Ticket(s):

#417166

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