CentOS

If you cannot attach the USB device to the VM then that would be a VBox problem and you'd need to ask in a VBox venue. If you can attach it but it isn't visible or isn't working in CentOS then that may be something to ask about here. If so then open a command prompt on the CentOS VM and run `dmesg -...

XFS (dm-0): Unmount and run xfs_repair So it's currently mounted so you don't want to fsck that while it is or it may be damaged. It's likely that dm-0 is your root filesystem. You need to boot in either single user mode with it mounted ro, or you need to boot a rescue environment and run it from t...

I split this away from its parent topic and moved it to the CentOS 7 section. The original was posted as a reply to https://forums.centos.org/viewtopic.php?f=54&t=73935 Your root filesystem is whatever gets mounted on / when you boot normally. If you only have /dev/mapper/control in your /dev/mapper...

Boot a rescue media - like the install DVD in rescue mode - and mount your filesystems and rename it back.

Beside this, I had to update the CentOS systems from 7 to 8.

There is no supported "upgrade" from 7 to 8. It is a re-install. And in any case CentOS Linux 8 is already EOL, 2 years ago.

I've asked the main CentOS 7 dev about this but have yet to receive an answer. However, this package is not part of the main CentOS repos and things from the centos-sclo-rh used to be built by the CentOS SCL SIG and I am not sure that exists any more. We'll find out in a day or 6 what the answer may...

Correct. It would seem that you haven't been paying attention - Red Hat announced at the end of 2020 that they were canning the CentOS project as-was and replacing it with "CentOS Stream" which is a permanent beta product in which RH test fixes that will be in the _next_ version of RHEL. Those are o...

OK, so try the opposite direction, where does nscd come from?

rpm -qf /usr/sbin/nscd
yum list nscd --showdupli

Startup Log Mar 14 18:26:46 server.fooweb.com nscd[31800]: /usr/sbin/nscd: relocation error: /usr/sbin/nscd: symbol __nss_database_lookup2, version GLIBC_PRIVATE not defined in file libc.so.6 with link time reference This looks like someone has either installed a version of nscd that is not part of...

I run AMD graphics on both my systems here, both F38 with kernel 6.7.5 and 6.7.6. I did have problems recently with crashes in amdgpu but that turned out to be due to my ATEN KVM having been reset to factory defaults and turning on a setting for MST. Once reset to SST the crashes have gone away but ...