Running from NFS

I want to install Unity in an NFS folder by extracting it there with the custom installer. That way, I can make it easily availabe in the Computer Lab here.
We are using XUbuntu 14.04.03 in the lab.

When I then start it from the NFS folder, the splash screen comes up and stays there infinitely.
When I start unity from a local disk, everything behaves as expected.

Here are the last messages I get when I start unity from NFS with the command:
strace ./unity-editor-5.1.0f3/Editor/Unity


access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/locales", F_OK) = 0
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/locales/en-US.pak", F_OK) = 0
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/locales/en-US.pak", F_OK) = 0
open("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/locales/en-US.pak", O_RDONLY) = 12
fstat(12, {st_mode=S_IFREG|0644, st_size=6977, ...}) = 0
mmap(NULL, 6977, PROT_READ, MAP_SHARED, 12, 0) = 0x7f5339d8e000
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/cef.pak", F_OK) = 0
open("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/cef.pak", O_RDONLY) = 13
fstat(13, {st_mode=S_IFREG|0644, st_size=1209947, ...}) = 0
mmap(NULL, 1209947, PROT_READ, MAP_SHARED, 13, 0) = 0x7f532257c000
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/cef_100_percent.pak", F_OK) = 0
open("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/cef_100_percent.pak", O_RDONLY) = 14
fstat(14, {st_mode=S_IFREG|0644, st_size=364243, ...}) = 0
mmap(NULL, 364243, PROT_READ, MAP_SHARED, 14, 0) = 0x7f5322523000
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/devtools_resources.pak", F_OK) = -1 ENOENT (No such file or directory)
readlink("/proc/self/exe", "/mount/dist/DIR/tmp/unity-editor"..., 4096) = 53
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/chrome-sandbox", F_OK) = 0
socketpair(PF_LOCAL, SOCK_SEQPACKET, 0, [15, 16]) = 0
shutdown(15, SHUT_RD) = 0
shutdown(16, SHUT_WR) = 0
pipe([17, 18]) = 0
mmap(NULL, 8392704, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5321d22000
mprotect(0x7f5321d22000, 4096, PROT_NONE) = 0
clone(child_stack=0x7f5322521cf0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f53225229d0, tls=0x7f5322522700, child_tidptr=0x7f53225229d0) = 19458
futex(0x7fffef4110d4, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
futex(0x7fffef4110a8, FUTEX_WAKE_PRIVATE, 1) = 0
socketpair(PF_LOCAL, SOCK_SEQPACKET, 0, [19, 20]) = 0
setsockopt(19, SOL_SOCKET, SO_PASSCRED, [1], 4) = 0
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/chrome-sandbox", F_OK) = 0
stat("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/chrome-sandbox", {st_mode=S_IFREG|S_ISUID|0755, st_size=23715, ...}) = 0
access("/mount/dist/DIR/tmp/unity-editor-5.1.0f3/Editor/chrome-sandbox", X_OK) = 0
pipe([21, 22]) = 0
close(22) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5339f44cd0) = 19459
rt_sigprocmask(SIG_SETMASK, [], ~[KILL STOP RTMIN RT_1], 8) = 0
close(21) = 0
recvmsg(19, 0x7fffef4106d0, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19459, si_status=1, si_utime=0, si_stime=0} ---
recvmsg(19,


then it stalles until I press ctrl-c

 

There's a log file in ~/.config/unity3d/Editor.log

My guess is that the suid permission for the chrome sandbox doesn't work on your nfs mount.

 

Thank you for your help. Indeed the nfs mount was mounted using the nosuid option.