apt-cache policy xfce4-diskperf-plugin xfce4-diskperf-plugin: Installed: 2.6.1-1 Candidate: 2.6.1-1 Version table: *** 2.6.1-1 500 500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status Using xubuntu 18.04, it appears that /dev/nvme0 is not supported, unless it requires root access, maybe i should boot a live usb and enable root gui and test it...
I have the same problem /dev/nvme0 is not showing any data and I can get data properly from /dev/dm-1 It would be great to get data from nvme too
nvme devices don't seem to be supported, which is a significant issue now they are the storage in many laptops.
It is working fine with a NVMe SSD, because they are just a block device like any other hard drive. You have to use /dev/nvme0n1 instead of /dev/nvme0.
Confirming that /dev/nvme0n1 does infant work Why do I have to define a specific partition and not the drive itself that is like using /dev/sda1 instead of /dev/sda
That is the way NVMe was designed, as a device can contain multiple namespaces (read as "storage areas"). /dev/nvme0 is a *character* device representing the first NVMe device, while /dev/nvme0n1 is a *block* device representing the first namespace on said device, and /dev/nvme0n1p1 is a *block* device representing the first partition in said namespace. /dev/nvme0n1 is the NVMe equivalent to hdd's /dev/sda. $ ls -l /dev/sda* /dev/nvme* crw------- 1 root root 243, 0 May 10 20:40 /dev/nvme0 brw-rw---- 1 root disk 259, 0 May 10 20:40 /dev/nvme0n1 brw-rw---- 1 root disk 259, 1 May 10 20:40 /dev/nvme0n1p1 brw-rw---- 1 root disk 8, 0 May 10 20:40 /dev/sda brw-rw---- 1 root disk 8, 1 May 10 20:40 /dev/sda1
so, closing as not a bug..