On Tue, 2009-02-17 at 15:52 -0800, Ahmon Dancy wrote: > Hello Ian, et al. > > Using autofs-5.0.3-36 (built from Fedora 10 updates source RPM) on > 2.6.26.6-49.fc8 kernel. We run w/ LOGGING=debug.
You will need update your 2.6.26 based kernel with the latest kernel module patch before we go further with this. It can be found in the patches directory of the 5.0.4 tarball on kernel.org. > > We use autofs extensively for NFS multimounts and there are a few > issues that we're trying to get resolved: > > Problem #1: > > We us a TIMEOUT of 300 but there are often mounts that are never > expired, even if lsof shows no process is using the mount points in > question. kill -USR1 doesn't help. > > Example: /net/bb2 isn't expiring. > > Relevant portion of /proc/mounts: > > bb2:/ /net/bb2 nfs > rw,nosuid,nodev,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nointr,proto=tcp,timeo=600,retrans=2,sec=sys,mountproto=udp,addr=192.168.95.79 > 0 0 > -hosts /net/bb2/acl autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > -hosts /net/bb2/home autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > -hosts /net/bb2/opt autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > -hosts /net/bb2/tmp autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > -hosts /net/bb2/usr autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > -hosts /net/bb2/var autofs > rw,relatime,fd=12,pgrp=9397,timeout=300,minproto=5,maxproto=5,offset 0 0 > bb2:/opt /net/bb2/opt nfs > rw,nosuid,nodev,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nointr,proto=tcp,timeo=600,retrans=2,sec=sys,mountproto=udp,addr=192.168.95.79 > 0 0 > > Sample log entry: > > Feb 17 15:31:40 gemini automount[9397]: handle_packet_expire_indirect: token > 67811, name bb2 > Feb 17 15:31:40 gemini automount[9397]: expiring path /net/bb2 > Feb 17 15:31:40 gemini automount[9397]: umount_multi: path /net/bb2 incl 1 > Feb 17 15:31:40 gemini automount[9397]: some offset mounts still present > under /net/bb2 > Feb 17 15:31:40 gemini automount[9397]: couldn't complete expire of /net/bb2 > Feb 17 15:31:40 gemini automount[9397]: send_fail: token = 67811 > > Interestingly, there's no mention of /net/bb2/opt, which it would need > to umount first. > > > Problem #2: > > One of the multimounts is misbehaving and not lazy-mounting. The > problem seems to stem from a failure to do a lazy umount earlier: > > Log entries for the umount attempt: > > Feb 17 13:32:54 gemini automount[9397]: handle_packet: type = 4 > Feb 17 13:32:54 gemini automount[9397]: handle_packet_expire_indirect: token > 67564, name cobweb > Feb 17 13:32:54 gemini automount[9397]: expiring path /net/cobweb > Feb 17 13:32:54 gemini automount[9397]: umount_multi: path /net/cobweb incl 1 > Feb 17 13:32:54 gemini automount[9397]: umount_multi_triggers: umount offset > /net/cobweb/home/ftp > Feb 17 13:32:54 gemini automount[9397]: umount_autofs_offset: offset > /net/cobweb/home/ftp not mounted > Feb 17 13:32:54 gemini automount[9397]: umount_multi_triggers: umount offset > /net/cobweb/home/patches > Feb 17 13:32:54 gemini automount[9397]: umount_autofs_offset: offset > /net/cobweb/home/patches not mounted > Feb 17 13:32:54 gemini automount[9397]: umount_multi_triggers: umount offset > /net/cobweb/www/sites/franzdownload > Feb 17 13:32:54 gemini automount[9397]: umount_autofs_offset: offset > /net/cobweb/www/sites/franzdownload not mounted > Feb 17 13:32:54 gemini automount[9397]: some offset mounts still present > under /net/cobweb > Feb 17 13:32:54 gemini automount[9397]: couldn't complete expire of > /net/cobweb > Feb 17 13:32:54 gemini automount[9397]: send_fail: token = 67564 > > After this happened, accesses to /net/cobweb/home/ftp did not result > in an automatic mount, just an empty directory. > > > This is a production system so I can only do so much, but I can try > reasonable tests and supply debugging output. Unfortunately I > haven't yet found a way to explicitly cause the broken scenario to > happen. > > _______________________________________________ > autofs mailing list > autofs@linux.kernel.org > http://linux.kernel.org/mailman/listinfo/autofs _______________________________________________ autofs mailing list autofs@linux.kernel.org http://linux.kernel.org/mailman/listinfo/autofs
