Re: NFS-Locking problem with 6.4/7.1-RELEASE
On Sun, Jan 18, 2009 at 2:15 AM, Matthias Schuendehuette m...@snafu.de wrote: Hello, I operate two FreeBSD-Servers in a Windows- and HP-UX Environment. One is a SAMBA-Server as a gateway between the Windows and the Unix world, the other is NFS-Server for the HP-UX 11i v1 Workstations. Both are HP ProLiants DL380 with additional external disks on SmartRAID Controllers. Since the HP-UX Workstations and their disks are becoming quite old, I started to move the home-directories to the FreeBSD Server, wich worked with 6.3-RELEASE quite good so far. Brave as I am, I updated the servers to 6.4 RELEASE and since then the users on the HP-UX machines with the homedirs on the FreeBSD-Server were locked... :-( I tried to find out what was happening and this are my results: When a user logs in on a HP-UX machine, his '.profile' file is opened and read/executed, but it seems, that it cannot be closed any more. So if the last line in the '.profile' is echo foo bar you *can* see foo bar on the screen, but then nothing happens any more, the machine is locked. I recorded such a session with 'tcpdump' and looked at the dump... the only noticeable things are *Bursts* of NLM V4 CANCEL_MSGes on the same filehandle. Eg: V4 CANCEL_MSG Call FH:0x644201fe svid: pos:0-0 This line is repeated 7 times with various values for 'svid'. I'm no NFS specialist at all, so I cannot tell you more :-/ But I can supply the dump (if needed), it's 92KB, so the size should not be a problem... BTW: I tried this with and without kernel support for NFS-Locking - no difference. I also tried the new replacement server with FreeBSD 7.1-RELEASE: Just the same problems, with and without kernel support. I hope someone is willing to work on that issue... As mentioned, a new, non-productive server is available in the moment, so tests are easily possible. TIA Matthew What OS and what NFS version are the HP-UX servers running? Have you checked /var/log/messages on the clients and on the server for helpful messages? Thanks, -Garrett ___ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to freebsd-stable-unsubscr...@freebsd.org
Re: NFS-Locking problem with 6.4/7.1-RELEASE
Hi Garret, Am 19.01.2009 um 22:29 schrieb Garrett Cooper: What OS and what NFS version are the HP-UX servers running? The OS is HP-UX 11.11 a.k.a HP-UX 11iv1. NFS-Version is NFSV3 (of course ;-) via TCP Have you checked /var/log/messages on the clients and on the server for helpful messages? No, I'll look tomorrow. I tested today against 7.1-STABLE (of today) but no change in behaviour so far. In the meantime I found PR kern/130628 and that could be the problem here too. I started 'wireshark' on the NFS-server today and it showed endless requests from the client to release a lock and equally endless error-replies... At least I would expect that an error like that in kern/130628 would look like what I observed today - but I may fail. Thanks for your reply - Matthew -- Ciao/BSD - Matthias Matthias Schuendehuettemsch [at] snafu.de, Berlin (Germany)
NFS-Locking problem with 6.4/7.1-RELEASE
Hello, I operate two FreeBSD-Servers in a Windows- and HP-UX Environment. One is a SAMBA-Server as a gateway between the Windows and the Unix world, the other is NFS-Server for the HP-UX 11i v1 Workstations. Both are HP ProLiants DL380 with additional external disks on SmartRAID Controllers. Since the HP-UX Workstations and their disks are becoming quite old, I started to move the home-directories to the FreeBSD Server, wich worked with 6.3-RELEASE quite good so far. Brave as I am, I updated the servers to 6.4 RELEASE and since then the users on the HP-UX machines with the homedirs on the FreeBSD-Server were locked... :-( I tried to find out what was happening and this are my results: When a user logs in on a HP-UX machine, his '.profile' file is opened and read/executed, but it seems, that it cannot be closed any more. So if the last line in the '.profile' is echo foo bar you *can* see foo bar on the screen, but then nothing happens any more, the machine is locked. I recorded such a session with 'tcpdump' and looked at the dump... the only noticeable things are *Bursts* of NLM V4 CANCEL_MSGes on the same filehandle. Eg: V4 CANCEL_MSG Call FH:0x644201fe svid: pos:0-0 This line is repeated 7 times with various values for 'svid'. I'm no NFS specialist at all, so I cannot tell you more :-/ But I can supply the dump (if needed), it's 92KB, so the size should not be a problem... BTW: I tried this with and without kernel support for NFS-Locking - no difference. I also tried the new replacement server with FreeBSD 7.1- RELEASE: Just the same problems, with and without kernel support. I hope someone is willing to work on that issue... As mentioned, a new, non-productive server is available in the moment, so tests are easily possible. TIA Matthew -- Ciao/BSD - Matthias Matthias Schuendehuettemsch [at] snafu.de, Berlin (Germany)
