Ok, I've tried restarting nfs services
but it hasn't brought any results. Still, there's no access to file ifcfg-wlan0. Any tries (eg. changing access permissions or hardlink creation to this file) end with "Stale File Handle". Wlan0 is the main network interface. There are no problems accessing any other file in location /etc/sysconfig/network-scripts. Any ideas how to solve it?
Edit: fsck solved the problem by deleting this file (/etc/sysconfig/network-scripts/ifcfg-wlan0), but after touch ifcfg-wlan0 and configuring it everything works fine, at least it looks like. Thanks for advice