If want to migrate my users from F14 to F17 but I encounter this blocking problem. All users have their home exported by a NFS server.(NFSv4/krb5) Homes are correctly automounted with the right rights (gssd and idmapd work well) But gnome (gnome shell-no fallback) doesn't recognize the soundcard Furthermore, when you browse the menus of applications, it's really slow (for instance, each opening of one firefox menu - file, edit, view, etc... - take 1 second) It doesn't happen with the same remote users using Fedora 14. (gnome reacts fast and soundcard is recognized) It doesn't happen neither with a local account on a Fedora 17 (ie when the home directory is on the hard drive) : soundcard is recognized (speakers icon appears) and gnome is responsive. After investigation, it happears that pulseaudio didn't succeed in creating the ~/.pulse directory when ~ is a NFS share. Here is a piece of the trace of the pulseaudio -k command : mkdir("/home/olelain/.pulse", 0700) = 0 umask(02) = 077 open("/home/olelain/.pulse", O_RDONLY|O_NOCTTY|O_NOFOLLOW|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 getuid() = 781 getgid() = 119 fchown(3, 781, 119) = -1 EINVAL (Invalid argument) rmdir("/home/olelain/.pulse") = 0 Furthermore, running wireshark, it appears that this generates around 50 nfs packets (trying to create the ~/.pulse directory and adding an entry in ~/.xsession-error : ) each time I open a menu (I wonder why gnome wants to play a sound each time ? .. anyway). This is what causes the 1 second latency and makes gnome not responsive. I tried to google "fchown+nfs" whithout success (I'm far from being a kernel expert).
Hmm..actually, it looks more like a NFS issue than a pulseaudio one: On a F14 station : -bash-4.2$ mount |grep olelain nfs-server:/olelain on /home/olelain type nfs4 (rw,relatime,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=krb5,clientaddr=***,local_lock=none,addr=***) -bash-4.2$ chown olelain zz chown: changing ownership of `zz': Invalid argument On a F14 station : -bash-4.1$ mount|grep olelain nfs-server:/olelain on /home/olelain type nfs4 (rw,file,sec=krb5,hard,tcp,sloppy,addr=***,clientaddr=***) -bash-4.1$ chown olelain zz -bash-4.1$ So no error on F14. F14 and F17 have the same autofs settings. I wonder where the local_lock=none comes from and if it's the cause of the error.
Definitively a NFS4 problem. Maybe I should open another bug since the souncard problem is a far consequence. idmapd dies : # systemctl status nfs-idmap.service nfs-idmap.service - NFSv4 ID-name mapping daemon Loaded: loaded (/usr/lib/systemd/system/nfs-idmap.service; enabled) Active: inactive (dead) CGroup: name=systemd:/system/nfs-idmap.service /proc/net/rpc/nfs4.nametoid/channel is missing : ]# rpc.idmapd -f -vvvv rpc.idmapd: libnfsidmap: using domain: *** rpc.idmapd: libnfsidmap: Realms list: '***' rpc.idmapd: libnfsidmap: processing 'Method' list rpc.idmapd: libnfsidmap: loaded plugin /lib64/libnfsidmap/nsswitch.so for method nsswitch rpc.idmapd: Expiration time is 600 seconds. rpc.idmapd: nfsdopenone: Opening /proc/net/rpc/nfs4.nametoid/channel failed: errno 2 (No such file or directory) # rpm -q kernel nfs-utils kernel-3.5.0-2.fc17.x86_64 nfs-utils-1.2.6-3.fc17.x86_64
Just read this : https://bugzilla.redhat.com/show_bug.cgi?id=817041 Sorry so for the confusion. Anyway, the chown bug remains. What I dont understand is that nfsidmap seems to work since I see the right attributes (owner and groups). But it seems to work only for name to uid, not for uid to name Indeed, sniffing nfs packets with wireshark, I see olelain@nfsdomain for each getattr but the nfs client sends olelain@dnsdomain for each settr, instead of olelain@nfsdomain (my nfsdomain, in idmapd.conf is different of the dnsname of my stations) In abstract, it looks like nfsidmap works for name to id , but not for id to name.
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