Additional repos for the control board

Mixtile Blade 3 (Mixtile Cluster Box)
#1

I’d like to use the cluster box as an NFS-based fileserver (with the data being stored on M.2 SSDs attached to the cluster nodes and Ceph as a distributed storage solution). Unfortunately, the NFS server package named nfs-kernel-server is available through one of the standard repos, but some of its dependencies are not:

mixtile@ClusterBox:~$ sudo opkg install nfs-kernel-server
Unknown package 'nfs-kernel-server'.
Collected errors:
 * pkg_hash_check_unresolved: cannot find dependency kmod-dm for libdevmapper-selinux
 * pkg_hash_check_unresolved: cannot find dependency kmod-dm for libdevmapper
 * pkg_hash_fetch_best_installation_candidate: Packages for libdevmapper found, but incompatible with the architectures configured
 * pkg_hash_check_unresolved: cannot find dependency kmod-fs-nfsd for nfs-kernel-server
 * pkg_hash_check_unresolved: cannot find dependency kmod-fs-nfs for nfs-kernel-server
 * pkg_hash_check_unresolved: cannot find dependency kmod-fs-nfs-v4 for nfs-kernel-server
 * pkg_hash_fetch_best_installation_candidate: Packages for nfs-kernel-server found, but incompatible with the architectures configured
 * opkg_install_cmd: Cannot install package nfs-kernel-server.

My customfeeds.conf is empty, whereas my distfeeds.conf looks like this:

src/gz openwrt_core https://downloads.openwrt.org/releases/23.05-SNAPSHOT/targe
ts/ramips/mt7620/packages
src/gz openwrt_base https://downloads.openwrt.org/releases/23.05-SNAPSHOT/packa
ges/mipsel_24kc/base
src/gz openwrt_luci https://downloads.openwrt.org/releases/23.05-SNAPSHOT/packa
ges/mipsel_24kc/luci
src/gz openwrt_packages https://downloads.openwrt.org/releases/23.05-SNAPSHOT/p
ackages/mipsel_24kc/packages

I have found a repo, which contains the necessary packages, but I don’t know whether they are compatible with the control board: Index

Is it safe to add the abovementioned repo?

#2

The control board is positioned as a console for managing other nodes. Due to the limited hardware resources, it is not recommended for other uses. It is suggested that you use one of the four devices as a management server to manage the other three devices.

#3

Excuse me?! I expected an answer on whether the repo I stated is compatible with the control board. And: I am not intending to use the control board as a “management server”, but like something mainstream routers (which also have limited resources, but allow you to attach a USB hard drive) already feature: an NFS or Samba server, which delivers data stored in some kinda SAN (Ceph? iSCSI?) made up from the blades. The really data-hungry clients will run on the blades anyway.