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I have installed RockyLinux 8.5 and am trying to mount a directory via cifs. I get the following error message:

# mount -t cifs -o user=<remarked>,domain=<remarked>,password=<remarked> //<remarked>/backups /mnt/backups mount error: cifs filesystem not supported by the system mount error(19): No such device Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)

The RPM packages cifs-utils and samba-utils are booth installed, but it seems to be, that the kernel can not find the cifs module because it is not possible to load it:

# find / -name "cifs" /usr/lib/modules/4.18.0-348.el8.0.2.x86_64/kernel/fs/cifs # lsmod | grep cifs # modprobe cifs modprobe: FATAL: Module cifs not found in directory /lib/modules/4.18.0-348.el8.0.2.x86_64

Does anyone have an idea why RockyLinux cannot load the cifs module? This is probably the problem why the mount does not work.

Here are additionally my dmesg logs. I cant found anything about cifs.

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Because you don't have the cifs module, else you would have seen

# find / -name "cifs" /usr/lib/modules/4.18.0-348.el8.0.2.x86_64/kernel/fs/cifs /usr/lib/modules/4.18.0-348.el8.0.2.x86_64/kernel/fs/cifs/cifs.ko
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  • The find command found cifs here: /usr/lib/modules/4.18.0-513.9.1.el8_9.x86_64/kernel/fs/cifs (and cifs.ko.xz) how do I load that ? modprobe cifs says Module cifs not found in directory /lib/modules/4.18.0 but that directory does not even exist, it is /usr/lib instead. Commented Dec 8, 2023 at 2:00
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I found the solution for my problem. I've installed such a minimal version of RockyLinux, that the RPM kernel-modules and kernel-core were missing.

After installing booth RPMs could cifs be loaded via modprobe cifs.

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