Trying to create a dir. with the following commands (as root)
$mkdir -p /proc/sys/sunrpc
Note that /proc/sys already exists. Yet getting error
mkdir: cannot create directory ‘/proc/sys/sunrpc’: No such file or directory
Getting similar errors, even when trying
$cd /proc/sys
$mkdir sunrpc (or sunrpc/ or ./sunrpc or ./sunrpc/ or using sudo)
Ultimately, I am trying to follow instructions, here, for setting rpc request quotas for nfs clients (an a commercial hadoop system). The point at which being able to create a directory becomes an issue is where I need to run the commands:
echo 128 > /proc/sys/sunrpc/tcp_slot_table_entries
echo 128 > /proc/sys/sunrpc/tcp_max_slot_table_entries
and the directory sunrpc does not yet exist in the parent file system /proc/sys.
Has anyone had this kind of problem before (could not find other posts where the parent directory are confirmed to exist)? What could be happening here? Thanks.
On Linux, entries in /proc other than those which relate directly to PIDs (which exist only if and when a process with the given ID exists) are created by kernel modules either on load or on hardware attach (more rarely -- most of these uses have moved to /sys).
If you're trying to configure modules used in support of the Linux in-kernel NFS implementation, you'll want to ensure that that implementation's related kernel modules are loaded and working ahead-of-time. You can either identify their names and load them with modprobe -- or just start up the NFS server or client (as appropriate to the current machine); if the service is able to start, the modules it depends on will necessarily be loaded.