/proc/diskstats reporting stats to wrong/unknown device

[shlokshah-dev]

Required information

• Distribution:
  • cat /etc/os-release or cat /etc/lsb-release
    DISTRIB_ID=Ubuntu
    DISTRIB_RELEASE=22.04
    DISTRIB_CODENAME=jammy
    DISTRIB_DESCRIPTION="Ubuntu 22.04.5 LTS"
• LXCFS version:
• The output of
  • cat /proc/1/mounts
    /dev/nvme0n1 /var/lib/kubelet/plugins/kubernetes.io/csi/containerstorage.csi.azure.com/23b54db93fa03ea1d2fa7c4f33c3ff02aa274d2d7643903bff843c1fae6c1778/globalmount ext4 rw,relatime,stripe=32 0 0

Issue description

The /proc/diskstats file reports the following -

   0       0 nvme0c0n1 162 2 5122 480 18918 8384 218384 118074 0 151248 169966 0 0 0 0 7740 51411
 259       1 nvme0n1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

I'm reading the diskstat file and matching the Maj:Min number from lsblk to match the stats (which is 259 and 1). But the diskstats are being reported for the first device with Maj:Min 0:0.

Need Help

Need help in understanding why the diskstat is adding the c0 namespace?
If this is a bug?