10.7.5 Lion Server limiting AFP connections to 10
I have an Intel XServe, Late 2006 2 x 2 GHZ Dual-Core Xeon with 20GB DDR2-DIMM RAM running Mac OS X Server Lion 10.7.5 (11G63) that has started to limit AFP connections to 10. This is a problems as we use this server to host Network Home Directories for 1/3 of our students (approximately 100 student directories are hosted on this server via a fiber channel XServe RAID).
I know that OS X Server can handle thousands of simultaneous AFP connections...I'm using two other 10.7.5 XServes to host the other 200 student accounts (1 XServe is an Early 2008 2 x 2.8 Quad Core Xeon with 24 gb of RAM running the same OS Build and the other is an early 2009 2 x 2.26 Quad Core with 24 GB of RAM running the same OS X Server build). Both of those XServes currently have between 40-80 AFP connections. Before last week, the oldes XServe was functioning normally, allowing 20-60 connections. For some reason last week, AFP crashed on this system and when I rebooted the server it now refuses to allow more than 10 AFP connections (confirmed by an error message from clients attempting to connect). I know that this behavior is more indicative of OS X client which only allows 10 simultaneous connections. The only messages in the AFP error logs are:
AppleFileServer[172] <Info>: TCP Listener returned error on accept
repeated over and over again.
Anybody have any thoughts on why this might be happening? After everybody leaves today I'm thinking of disconnecting the RAID from this Server and then attaching it to one of the other two XServes and then re-mapping the the student accounts to the other servers, but I'd hate to decrease my load-balancing as this is already a fairly slow solution as it is.
Thanks,
Christopher
I've done some more digging and it looks like the three packages included in the update have about 4000 files that didn't get installed. A good number of them are .png or .icns files, but there are whole applications (e.g. VNCServer) that didn't get updated.
The system is currently in a state where it cannot install software via Software Update or via Installer.
Any ideas?
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Lion Server VPN, Can Connect Locally, Not Remotely
I have both Lion and Lion Server installed on my Core 2 Duo iMac, mainly because I want the VPN feature of Server.
I configured everything correctly for the VPN, and can connect to it with no problems from my iPhone and iPad when I am within my own LAN (the server and the iPhone/iPad are on the same IP range and subnet).
I also used the automatic config within the Server app to configure my AirPort Extreme N Base Station. Looking at the Port Mapping section of my ABS from within AirPort Utility, I do in fact see that VPN Service (L2TP) is configured with the following UDP ports: 500, 1701 and 4500. Those ports ARE pointing to the iMac that is running the VPN server. Firewall on that iMac is turned OFF.
However, I am unable to connect my iPhone to the VPN Server using my Public IP address. I have tried it from within my network (out of network to internet the back), from my Verizon MiFi or from my iPhone's 3G connection (well, in my area it is still Edge). The iPhone simply sits on "Connecting" for a few seconds, then an alert comes up stating "The L2TP-VPN server did not respond. Try reconnecting. If the problem..." yadada.
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I also cannot connect to the VPN via the Public IP with other devices like my iBook, PowerBook G4, Windows 7 PC, or iMac G5. They ALL CAN connect via the local network 10.1.x.x IP address.
Am I missing something here? I did all of the automatic configurations, and all of the ports appear to be properly open.Not in my case, Per, no.
I just did a tcpdump between various systems.
For those that do NOT work (client iPhone, client 10.7 and server 10.7) the tcpdumps look like so:
19:12:33.883057 IP Home.60845 > LionServer.500: isakmp: phase 1 I ident
19:12:33.884410 IP LionServer.500 > Home.60845: isakmp: phase 1 R ident
19:12:33.910379 IP Home.60845 > LionServer.500: isakmp: phase 1 I ident
19:12:33.918362 IP LionServer.500 > Home.60845: isakmp: phase 1 R ident
19:12:33.958995 IP Home.60846 > LionServer.4500: NONESP-encap: isakmp: phase 1 I ident[E]
19:12:33.959349 IP LionServer.4500 > Home.60846: NONESP-encap: isakmp: phase 1 R ident[E]
19:12:33.959461 IP LionServer.4500 > Home.60846: NONESP-encap: isakmp: phase 2/others R inf[E]
19:12:34.997414 IP Home.60846 > LionServer.4500: NONESP-encap: isakmp: phase 2/others I oakley-quick[E]
19:12:34.998323 IP LionServer.4500 > Home.60846: NONESP-encap: isakmp: phase 2/others R oakley-quick[E]
19:12:35.016983 IP Home.60846 > LionServer.4500: NONESP-encap: isakmp: phase 2/others I oakley-quick[E]
19:12:35.019173 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x1), length 132
19:12:35.052641 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
19:12:35.595022 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x2), length 132
19:12:37.597957 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x3), length 132
19:12:38.212127 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
19:12:41.214447 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
19:12:41.603061 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x4), length 132
19:12:44.216935 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
19:12:45.609900 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x5), length 132
19:12:49.616860 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x6), length 132
19:12:53.623054 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x7), length 132
19:12:54.965357 IP Home.60846 > LionServer.4500: isakmp-nat-keep-alive
19:12:55.032098 IP Home.60846 > LionServer.4500: NONESP-encap: isakmp: phase 2/others I inf[E]
19:12:55.036420 IP Home.60846 > LionServer.4500: NONESP-encap: isakmp: phase 2/others I inf[E]
19:12:56.228356 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
Note: I've done this over wired and wireless as well as 3G -- the transport on the client end is NOT the issue.
A connection that works, from iPhone ONLY (on 3G or Wireless) is:
11:24:59.960105 IP Home.61168 > LeopardServer.500: isakmp: phase 1 I ident
11:24:59.964119 IP LeopardServer.500 > Home.61168: isakmp: phase 1 R ident
11:25:00.673976 IP Home.61168 > LeopardServer.500: isakmp: phase 1 I ident
11:25:00.712858 IP LeopardServer.500 > Home.61168: isakmp: phase 1 R ident
11:25:01.466127 IP Home.61169 > LeopardServer.4500: NONESP-encap: isakmp: phase 1 I ident[E]
11:25:01.468180 IP LeopardServer.4500 > Home.61169: NONESP-encap: isakmp: phase 1 R ident[E]
11:25:01.468546 IP LeopardServer.4500 > Home.61169: NONESP-encap: isakmp: phase 2/others R inf[E]
11:25:02.954797 IP Home.61169 > LeopardServer.4500: NONESP-encap: isakmp: phase 2/others I oakley-quick[E]
11:25:02.978314 IP LeopardServer.4500 > Home.61169: NONESP-encap: isakmp: phase 2/others R oakley-quick[E]
11:25:03.480886 IP Home.61169 > LeopardServer.4500: NONESP-encap: isakmp: phase 2/others I oakley-quick[E]
11:25:03.486763 IP Home.61169 > LeopardServer.4500: UDP-encap: ESP(spi=0x0a46a01f,seq=0x1), length 116
11:25:04.032382 IP Home.61169 > LeopardServer.4500: UDP-encap: ESP(spi=0x0a46a01f,seq=0x2), length 116
11:25:06.029801 IP Home.61169 > LeopardServer.4500: UDP-encap: ESP(spi=0x0a46a01f,seq=0x3), length 116
11:25:06.517111 IP LeopardServer.4500 > Home.61169: UDP-encap: ESP(spi=0x088d7e27,seq=0x1), length 116
11:25:06.742918 IP LeopardServer.4500 > Home.61169: UDP-encap: ESP(spi=0x088d7e27,seq=0x2), length 116
And from there it's all normal.
What never works:
10.7 client to 10.7 server
iPhone to 10.7 server
The breakage seems to happen on 10.7 server here:
19:12:35.019173 IP Home.60846 > LionServer.4500: UDP-encap: ESP(spi=0x041b007d,seq=0x1), length 132
19:12:35.052641 IP LionServer.500 > Home.500: isakmp: phase 1 I ident
After that first ESP packet, the Lion Server responds with another phase 1 ident.
The Leopard server does not.
It may still be something in my setup, but, there's nothing to configure on 10.7 server other than "on" and "off" and some IP addresses, which I'm nearly certain isn't the issue...but who knows. Either the Lion Server ignores whatever is in that ESP packet, and starts over, or, iOS and OS X are sending it something it doesn't like and is forcing it to reset and start over. -
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Terminal server limiting CUPC connections to 10
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Pete -
Is there as way, in Lion Server, to show and if needed, clear AFP connections for individual network accounts? This was necessary and easy to do on Snow Leopard Server through Server Admin.
Thanks,
Peyton Armstrongnot totally what you wanted but so for Lion Server I am relegated to using this command in terminal.
netstat -n -p TCP | grep ".548"
or just...
netstat -n -p TCP
...to see all tcp/ip connections. I just switched over to lion server for afp and have not found any other commands to orderly disconnect users and so on. Hope that helps though. -
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I'm trying to query our OS X 10.6 server for currently connected AFP users using the CLI and I'm unsure of how to go about it.
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Thanks for any information
StewartI have solved this myself and used egrep to get the output I desired:
serveradmin command afp:command = getConnectedUsers | egrep '(name)' | cut -d '"' -f 2
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Stewart -
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Hello everyone,
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When a client who has trouble connecting uses the "Connect As" method described above, entries in the Kerberos log are created instantly when client clicks connect.
Probably also worth noting that renaming of the server was related to me setting up Open Directory on it.
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Tried all kinds of craziness on the client, even a full Time Machine restore.
Tried fixing Open Directory.
I was absolutely stumped by what was happening, but then thought, Hmm. I'm wondering if it's related to MobileMe going down? I noticed it started to happen after July 31...
Success! That was it! Signing out of MobileMe in System Preferences made everything work the way it should!
CDPlayer2: check if the clients are signed in to MobileMe, and if signing out fixes things - I'd appreciate it if you could post your results. Thanks. -
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/System/Library/CoreServices/NetAuthAgent.app/Contents/MacOS/NetAuthAgent[2471] AFP error -5018 mapped to EIO
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Hello,
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Damienlikely either a DNS error either when you setup opendirectory or a DNS issue with your current setup.
the servers hostname and IP need to resolve (forward/reverse) properly from the clients and on the server itself.
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krypted.com has some good articles on setting up OD properly. -
Viewing/disconnecting open file connections on Lion Server?
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Hi kevinfromhunt,
Try sudo launchctl unload /System/Library/LaunchDaemons/com.apple.AppleFileServer.plist
sudo serveradmin start afp
Suppose it would work with other services as well.
It worked for FileSharing for me.
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Good luck.
Beno -
OS X LION 10.8.2 connection error with AFP
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We had the same problem in a earlier update but somehow got around it follwing the terminal commands from: http://www.alexanderwilde.com/2011/04/os-x-lion-connection-error-with-afp-and-wo rkaround/
But now after the update its back to be broken again...
Please help!
ThanksExactly the same problem here for a satellite user working abroad.
10.8.2 - cannot connect to the server over AFP. I've run the commands in the link posted, no dice.
Users running 10.8.2 on the internal LAN have no issues however, just this one off-site user. -
Connecting SL clients to Lion Server issues
After a week of use , Snow leopard clients are now no longer able to connect to an afp shared drive on Lion Server. Worked fine for the first week.
Here is a crash report from one of the clients:
Process: NetAuthAgent [160]
Path: /System/Library/CoreServices/NetAuthAgent.app/Contents/MacOS/NetAuthAgent
Identifier: com.apple.NetAuthAgent
Version: 2.1 (2.1)
Build Info: NetAuth-710100~1
Code Type: X86-64 (Native)
Parent Process: launchd [95]
Date/Time: 2011-09-12 16:13:25.230 -0400
OS Version: Mac OS X 10.6.6 (10J567)
Report Version: 6
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Crashed Thread: 3
Thread 0: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0x00007fff860272da mach_msg_trap + 10
1 libSystem.B.dylib 0x00007fff8602794d mach_msg + 59
2 com.apple.CoreFoundation 0x00007fff817c7932 __CFRunLoopRun + 1698
3 com.apple.CoreFoundation 0x00007fff817c6dbf CFRunLoopRunSpecific + 575
4 com.apple.HIToolbox 0x00007fff86f9a93a RunCurrentEventLoopInMode + 333
5 com.apple.HIToolbox 0x00007fff86f9a73f ReceiveNextEventCommon + 310
6 com.apple.HIToolbox 0x00007fff86f9a5f8 BlockUntilNextEventMatchingListInMode + 59
7 com.apple.AppKit 0x00007fff83658e64 _DPSNextEvent + 718
8 com.apple.AppKit 0x00007fff836587a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155
9 com.apple.AppKit 0x00007fff8361e48b -[NSApplication run] + 395
10 com.apple.NetAuthAgent 0x000000010000be31 0x100000000 + 48689
11 com.apple.NetAuthAgent 0x0000000100001478 0x100000000 + 5240
Thread 1: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x00007fff8604016a kevent + 10
1 libSystem.B.dylib 0x00007fff8604203d _dispatch_mgr_invoke + 154
2 libSystem.B.dylib 0x00007fff86041d14 _dispatch_queue_invoke + 185
3 libSystem.B.dylib 0x00007fff8604183e _dispatch_worker_thread2 + 252
4 libSystem.B.dylib 0x00007fff86041168 _pthread_wqthread + 353
5 libSystem.B.dylib 0x00007fff86041005 start_wqthread + 13
Thread 2:
0 libSystem.B.dylib 0x00007fff86040f8a __workq_kernreturn + 10
1 libSystem.B.dylib 0x00007fff8604139c _pthread_wqthread + 917
2 libSystem.B.dylib 0x00007fff86041005 start_wqthread + 13
Thread 3 Crashed:
0 libSystem.B.dylib 0x00007fff8602a160 strlen + 16
1 libSystem.B.dylib 0x00007fff86030d58 strdup + 28
2 com.apple.KerberosHelper 0x00007fff818f6520 KRBCreateSessionInfo + 882
3 com.apple.KerberosHelper 0x00007fff818f7453 KRBCreateSession + 158
4 com.apple.NetAuthAgent 0x0000000100019965 0x100000000 + 104805
5 com.apple.NetAuthAgent 0x0000000100019556 0x100000000 + 103766
6 com.apple.NetAuthAgent 0x000000010001a058 0x100000000 + 106584
7 com.apple.NetAuthAgent 0x00000001000087ee 0x100000000 + 34798
8 com.apple.Foundation 0x00007fff805040a5 __NSThread__main__ + 1429
9 libSystem.B.dylib 0x00007fff86060536 _pthread_start + 331
10 libSystem.B.dylib 0x00007fff860603e9 thread_start + 13
Thread 3 crashed with X86 Thread State (64-bit):
rax: 0x00000000ffffffff rbx: 0x00000000fffffffd rcx: 0x0000000000000000 rdx: 0x0000000000000000
rdi: 0x0000000000000000 rsi: 0x0000000100614f61 rbp: 0x00000001138d5080 rsp: 0x00000001138d5058
r8: 0x0000000000800000 r9: 0x00000000100614f7 r10: 0x0000000000000000 r11: 0x0000000100614f70
r12: 0x00007fff70380490 r13: 0x0000000000000000 r14: 0x00000001006141c0 r15: 0x00000001138d5ab8
rip: 0x00007fff8602a160 rfl: 0x0000000000010286 cr2: 0x0000000000000000
Binary Images:
0x100000000 - 0x100029fff com.apple.NetAuthAgent 2.1 (2.1) <42B1CD13-9A8F-4882-F5B3-DB9BDB05B147> /System/Library/CoreServices/NetAuthAgent.app/Contents/MacOS/NetAuthAgent
0x1000e0000 - 0x1000e7fff com.apple.URLMount.AFPPlugin 3.2.1 (3.2.1) <108073AE-9E03-4455-296C-144C2FCF013C> /System/Library/Filesystems/NetFSPlugins/afp.bundle/Contents/MacOS/afp
0x100783000 - 0x1007cdfff com.apple.AppleShareClientCore 2.0 (2.0) <2604D912-AE13-00F6-1C8C-A54A5D1A4923> /System/Library/Frameworks/AppleShareClientCore.framework/Versions/A/AppleShare ClientCore
0x7fff5fc00000 - 0x7fff5fc3bdef dyld 132.1 (???) <B536F2F1-9DF1-3B6C-1C2C-9075EA219A06> /usr/lib/dyld
0x7fff804f3000 - 0x7fff80776ff7 com.apple.Foundation 6.6.4 (751.42) <9A99D378-E97A-8C0F-3857-D0FAA30FCDD5> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x7fff807c1000 - 0x7fff807d7fe7 com.apple.MultitouchSupport.framework 207.10 (207.10) <1828C264-A54A-7FDD-FE1B-49DDE3F50779> /System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/Multit ouchSupport
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0x7fff88fea000 - 0x7fff8902bfff com.apple.SystemConfiguration 1.10.5 (1.10.2) <FB39F09C-57BB-D8CC-348D-93E00C602F7D> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x7fff89124000 - 0x7fff89147fff com.apple.opencl 12.3 (12.3) <D30A45FC-4520-45AF-3CA5-092313DB5D54> /System/Library/Frameworks/OpenCL.framework/Versions/A/OpenCL
0x7fff89156000 - 0x7fff89163fe7 libCSync.A.dylib 545.0.0 (compatibility 64.0.0) <397B9057-5CDF-3B19-4E61-9DFD49369375> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
0x7fffffe00000 - 0x7fffffe01fff libSystem.B.dylib ??? (???) <71E6D4C9-F945-6EC2-998C-D61AD590DAB6> /usr/lib/libSystem.B.dylibSimplest way is to write the program to create anew thread to handle each client
when the ServerSocket accepts a new connection a new thread should be created and that will handle the client. The main threadshould go back to accept next client
while(true){
Soeket socket = serverSocket.acept();
new ClientHandler(socket).start(); /ClientHandler is the class that should be handling the communication with the client
} -
AFP automount sharing broken in Lion Server?
Network rundown:
Mac Mini running Server
two MBPs (one upgraded to Lion, the other still running Snow Leopard)
The Mini is the OD Master for the three Macs and runs a number of services (Mail, Web, Wiki, VPN, etc.). The important service for this thread is that it serves out three shares via AFP, configured to be automounted on the two laptops. Normally all three shares are set up (via Workgroup Manager / Directory Utility) to use the Kerberos v2 UAM; however, for testing purposes I've temporarily adjusted the UAMs as follows:
/Groups -> afp://myserver/Groups
/Volumes/Attic -> afp://;AUTH=No%20User%20Authent@myserver/Attic
/Volumes/Multimedia -> afp://;AUTH=Client%20Krb%20v2@myserver/Multimedia
When the Mini is running Snow Leopard Server (10.6.8), the automounting behavior works as expected when connecting from a laptop without a valid Kerberos ticket:
lionmbp:~>klist -f
klist: krb5_cc_get_principal: No credentials cache file found
lionmbp:~>ls /Groups
ls: Groups: Invalid argument
lionmbp:~>ls /Volumes/Attic
[snip - file listing]
lionmbp:~>df -h /Volumes/Attic
Filesystem Size Used Avail Capacity Mounted on
afp_000000004oMw0oYHtK4AvcMP-1.2d00010a 466Gi 277Gi 189Gi 60% /Volumes/Attic
lionmbp:~>ls /Volumes/Multimedia
ls: Multimedia: Invalid argument
and then with a valid Kerberos ticket:
lionmbp:~>sudo umount /Volumes/Attic
Password:
lionmbp:~>df -h /Volumes/Attic
Filesystem Size Used Avail Capacity Mounted on
map -static 0Bi 0Bi 0Bi 100% /Volumes/Attic
lionmbp:~>klist -f
[snip]
Sep 19 23:27:17 Sep 21 23:27:17 FPRIA krbtgt/DOMAIN@DOMAIN
lionmbp:~>ls /Groups
[snip - file listing]
lionmbp:~>ls /Volumes/Attic
[snip - file listing]
lionmbp:~>ls /Volumes/Multimedia/
[snip - file listing]
However, after upgrading the Mini to Lion Server (10.7.1), attempting to automount the same shares does not work at all, regardless of whether a valid Kerberos ticket exists or not
lionmbp:~>klist -f
klist: krb5_cc_get_principal: No credentials cache file found
lionmbp:~>ls /Groups
ls: Groups: Authentication error
lionmbp:~>ls /Volumes/Attic
ls: Attic: Input/output error
lionmbp:~>ls /Volumes/Multimedia/
ls: : Invalid argument
lionmbp: /usr/bin/kinit
[snip - provide password]
lionmbp:~>klist -f
[snip]
Sep 19 23:15:09 Sep 21 23:15:09 FPRIA krbtgt/DOMAIN@DOMAIN
lionmbp:~>date
Mon Sep 19 23:17:03 CDT 2011
lionmbp:~>ls /Groups
ls: Groups: Authentication error
lionmbp:~>ls /Volumes/Attic
ls: Attic: Input/output error
lionmbp:~>ls /Volumes/Multimedia/
ls: : Invalid argument
Anyone else encountering the same issues with AFP on Lion Server? Is AFP simply broken, or is there some poorly documented configuration/troubleshooting procedure that can resolve this issue?
Notes:
I only tried the automounting from the Lion MBP, I would expect that a Lion <-> Lion AFP connection would have fewer issues than Snow Leopard <-> Lion
The issue originally presented itself several weeks ago when I atttempted to upgrade the server; this AFP problem was a showstopper so I restored SL from a backup. I have since been testing by cloning the server drive to a USB drive, booting from it, and running the upgrade there.
In performing the Lion Server upgrade, I follow all the defaults. The server is booted off the USB drive to ensure it is in a working state before starting the upgrade. The only post-upgrade changes are to run Software Update (mainly to capture the recent security update) and then to follow the single signon instructions posted hereSome more testing hints in the direction of the problem:
aragorn:~>kinit -l 48h -r 48h -p -f [email protected]
[email protected]'s Password:
aragorn:~>klist -fCredentials cache: API:1501:10
Principal: [email protected]
Issued Expires Flags Principal
Oct 1 17:05:53 Oct 3 17:05:50 FPRIA krbtgt/[email protected]
aragorn:~>ls /Volumes/Multimedia
ls: Multimedia: Invalid argument
aragorn:~>mkdir /tmp/test; chmod 777 /tmp/test
aragorn:~>sudo mount_afp "afp://;AUTH=Client Krb [email protected]/Multimedia" /tmp/test
mount_afp: AFPMountURL returned error -50, errno is -50
Looking in MacErrors.h reveals
paramErr = -50, /*error in user parameter list*/
That both ways of mounting AFP seem to be complaining of argument/parameter errors indicates something isn't being passed across the network correctly or is not being parsed properly on one end or the other. At the moment my dtrace-fu isn't strong enough to delve into this more deeply.
With 10.7.2 due out soon, I think I'll wait to see if Apple engineering caught this already. If not, I'll raise a bug ticket.
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