Monitoring hard disk data rate read/write works fine for individual hard disks or NVMes, but if I try to monitor a soft raid (md device), the data rate is always zero. The interesting thing is that the data rate sensors of the hard disks that form the md device (sda and sdb in my case) show correct values. The behaviour is the same using ksysguard or the plasma widget. The sensor's names in ksysguard are disk/mdXXX_(X:XXX)/Rate/rblk disk/mdXXX_(X:XXX)/Rate/wblk SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE Tumbleweed 20210916 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION Kernel 5.13.13
Meanwhile, I've upgrade my openSUSE Tumbleweed installation a bit and it works now! SOFTWARE/OS VERSIONS Linux/KDE Plasma: openSUSE Tumbleweed 20211012 KDE Plasma Version: 5.22.5 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION Kernel 5.14.9 So, a major difference is the kernel version and that most Qt packages now have a version 5.15.2+kde222.
Updating the status here based on the reporter indicating that the issue was fixed along with either a kernel or Qt update - please reopen if this is incorrect and the issue still occurs. Thanks!