Here are the illumos bugs related to the open source nlockmgr: https://www.illumos.org/issues/4993 - NLM: LOCK_RES/UNLOCK_RES is retransmitted 5 times back to the client in case of UDP https://www.illumos.org/issues/4965 - NLM: Mac OS X client can be stuck at locking a NFS file on an illumos server (SmartOS, Nexenta or OmniOS etc.) running open source lockd https://www.illumos.org/issues/4518 - /usr/lib/nfs/lockd: [daemon.error] Cannot establish NLM service over <file desc. 9, protocol udp> : I/O error. Exiting https://www.illumos.org/issues/4517 - Locking the same file over NFS from a Linux client by multiple processes could cause 30 seconds delay accumulatively if the NFS server machine has more than one IPv4 interface.
The issue of leaked reserved ports really has nothing to do with nlockmgr, nlockmgr is just a victim of the issue. I think Ken Harris has already communicated with you about a potential fix. Except issue 4518, we have tried our own fixes and so far they work very well in our production environments. Thanks, On Wed, Jan 28, 2015 at 3:00 PM, Marcel Telka <[email protected]> wrote: > Please file bug report(s) with detailed information how to reproduce the > problem(s). > > Thanks. > > On Wed, Jan 28, 2015 at 01:58:21PM -0600, Schweiss, Chip via > illumos-discuss wrote: > > 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/182180/23046997-5a38a7d8 > > Modify Your Subscription: > https://www.listbox.com/member/?&; > > Powered by Listbox: http://www.listbox.com > > -- > +-------------------------------------------+ > | 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/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
