I've been through a lot of problems with this to and ultimately gave up on the NFSv3 lock manager in Illumos and switched everything to NFSv4.
There are several problems. I diagnosed them using tcpdump and Wireshark. 1. The locking manager uses different ports than the Linux firewall expects for NFS and ends up blocking connections. The only solution I found was to open all ports to the NFS server IP on the Linux NFS client. 2. The lock manager holds on to locks longer than it should. It appears to have a 30 second cycle on releasing lock. This causes all locks to get used up really fast. 3. And of course the well know problem of the lock manager not starting because a client is no longer accessible. The easiest trigger I've found is run a bunch of csh processes that cause a logon. The .history file in the user's home directory will get locked lots of times and consume all the locks. We saw this from our processing cluster immediately when the new lock manger was introduced. -Chip On Wed, Jan 28, 2015 at 1:19 PM, Youzhong Yang via illumos-discuss < [email protected]> wrote: > A few months ago, we were hit by an issue in rpc module. When it happens, > lots of reserved ports are in BOUND state, so nlockmgr will refuse lock > request. > > If 'netstat -an | grep BOUND | wc -l' returns a large number, then it's > the same issue as we had. > > > > On Wed, Jan 28, 2015 at 2:09 PM, Marcel Telka via illumos-discuss < > [email protected]> wrote: > >> On Wed, Jan 28, 2015 at 02:07:20PM -0500, Dan McDonald wrote: >> > >> > > On Jan 28, 2015, at 2:02 PM, Marcel Telka via illumos-discuss < >> [email protected]> wrote: >> > > >> > > Note: NexentaStor 4 uses the same new NLM implementation as recent >> illumos >> > > does. >> > >> > Is there anything there that needs to be upstreamed? >> >> No. Nexenta's NLM is in sync with illumos (from top of my head, but I >> believe >> I'm right). >> >> -- >> +-------------------------------------------+ >> | Marcel Telka e-mail: [email protected] | >> | homepage: http://telka.sk/ | >> | jabber: [email protected] | >> +-------------------------------------------+ >> >> >> ------------------------------------------- >> illumos-discuss >> Archives: https://www.listbox.com/member/archive/182180/=now >> RSS Feed: >> https://www.listbox.com/member/archive/rss/182180/26912960-6f721d7b >> Modify Your Subscription: https://www.listbox.com/member/?&; >> Powered by Listbox: http://www.listbox.com >> > > *illumos-discuss* | Archives > <https://www.listbox.com/member/archive/182180/=now> > <https://www.listbox.com/member/archive/rss/182180/21878145-f6040e21> | > Modify > <https://www.listbox.com/member/?&;> > Your Subscription <http://www.listbox.com> > ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
