On Fri, 2008-12-05 at 11:06 -0500, Jeff Moyer wrote: > Ian Kent <[EMAIL PROTECTED]> writes: > > > On Thu, 2008-12-04 at 14:13 +0100, Martin Vogt wrote: > >> > >> Hello list, > >> > >> I'm currently experimenting with autofs on SuSE 11.1 rc1 > >> > >> -autofs-5.0.3-82.19 > > > > I don't know what this means in terms of patches applied, but ok. > > > >> > >> Around the 1024th mount, autofs hangs and the machine needs a reboot -f. > >> > >> I have here >2000 mount points which usually look like this: > >> > >> /homes/vogt0001 --fstype=bind :/net/fsA/home/user/vogt0001 > >> /homes/vogt0002 --fstype=bind :/net/fsB/home/user/vogt0002 > >> [..] > >> /homes/vogt2000 --fstype=bind :/net/fsC/home/user/vogt2000 > > > > So a direct map? > > With many active real mounts, is that what you're saying? > > > >> > >> > >> Further debugging revealed: > >> > >> pxe1:/home/demo1 # lsof -p <automount pid> > >> [...] > >> automount 5111 root 1022r DIR 0,228 0 13029 /u/itwm/hinojosa > >> automount 5111 root 1023r DIR 0,561 0 13362 /u/itwm/andrejs > >> automount 5111 root 1024r FIFO 0,7 0t0 26910 pipe > >> > >> The 1024 really looks like some limit, which is hit by the automount > >> process. > > > > Quite possibly, but I don't think there is anything autofs can do about > > it since in autofs we see: > > ... > > #define MAX_OPEN_FILES 10240 > > ... > > rlim.rlim_cur = MAX_OPEN_FILES; > > rlim.rlim_max = MAX_OPEN_FILES; > > res = setrlimit(RLIMIT_NOFILE, &rlim); > > if (res) > > warn(logging, > > "can't increase open file limit - continuing"); > > > > Unless I've not got this correct in some way the open file limit should > > be much higher. But there are ways the OS configuration can limit this. > > I'm pretty sure root processes bypass the max open fds check. > > [snip] > > >> Ah, the behavoir by autofs is: > >> > >> - It hangs on duing a mount operation: > >> > >> root 5111 0.0 0.1 97200 2936 pts/0 Sl+ 13:30 0:01 > >> /usr/sbin/automount -d -f -t 600 -p /var/run/automount.pid -O ro > >> root 9541 0.0 0.0 0 0 pts/0 Z+ 13:31 0:00 [mount] > >> <defunct> > > > > So maybe mount(8) and its relatives are the problem, not sure I can do > > much about that either. > > Yeah, strange. Can we figure out what the mount commandline was for > this zombie?
You would need to enable debug logging. autofs and syslog setup instructions for this can be seen at http://people.redhat.com/jmoyer. > > -Jeff _______________________________________________ autofs mailing list autofs@linux.kernel.org http://linux.kernel.org/mailman/listinfo/autofs
