Thanks for taking the time to look at this, and sorry to have missed that my BIOS was out of date. I have now flashed the new version and running the commands as you propose gives the following output:
nick@serv2:~$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date [sudo] password for nick: P1.40 07/23/2015 Also, I confirm that updating the BIOS has not solved the problem. If I understand your question correctly, you are asking for how the bug manifests itself? If so, I have the following two files set up on my MAC to allow me to automount the share: beethoven:etc nick$ cat auto_master # # Automounter master map # +auto_master # Use directory service /net -hosts -nobrowse,hidefromfinder,nosuid /home auto_home -nobrowse,hidefromfinder /Network/Servers -fstab /- -static /- auto_nfs -nobrowse,nosuid and beethoven:etc nick$ cat auto_nfs /../Volumes/share -fstype=nfs,noresvport nfs://serv2_local:/export/share Note for completeness, serv2_local is defined in my /etc/hosts file: beethoven:etc nick$ cat /etc/hosts ## # Host Database # # localhost is used to configure the loopback interface # when the system is booting. Do not change this entry. ## 127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost 192.168.2.4 serv2_local (and that I have a good connection to it: beethoven:etc nick$ ping serv2_local PING serv2_local (192.168.2.4): 56 data bytes 64 bytes from 192.168.2.4: icmp_seq=0 ttl=64 time=4.572 ms The use of /../Volumes/share is a trick to make OSX automount in the /Volumes directory. I have tested using /mnt/share and get the same error. serv2_local is also correctly exporting the nfs shares: beethoven:etc nick$ showmount -e serv2_local Exports list on serv2_local: /export/pvr 192.168.2.0/24 /export/share 192.168.2.0/24 /export/home 192.168.2.0/24 /export 192.168.2.0/24 (note that the MAC I am using has IP address 192.168.2.42 so it should be able to access the export) When I try to access the shared directory, I get the following: beethoven:Volumes nick$ cd /Volumes beethoven:Volumes nick$ ls -lh total 10 lrwxr-xr-x 1 root admin 1B 24 Oct 17:13 Macintosh HD -> / dr-xr-xr-x 2 root wheel 1B 24 Oct 17:13 share beethoven:Volumes nick$ cd share -bash: cd: share: No such file or directory If I boot the Ubuntu server with the pervious kernel version, I am able to access the NFS share normally. Thanks for taking your time to look at this -- let me know if you need more information. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1509666 Title: I cannot mount nfs shares from osx when using the new kernel Status in linux package in Ubuntu: Confirmed Bug description: I am running ubuntu server 64 bit 14.04 on my home server. The server shares some directories using NFS v4 I have some apple macs (MBAs) that use the automount to mount the shared nfs directory. Previously, this had worked fine. My file /etc/auto_nfs contains the single line: /../Volumes/share -fstype=nfs,noresvport nfs://serv2_local:/export/share I updated to kernel 3.13.0-66 and the OSX machines would no long mount the NFS shares (see message below from /var/log/messages.log on the Mac): Oct 24 14:34:35 beethoven automountd[655]: NFS server serv2_local not responding Please see the list of modules loaded: Oct 24 14:26:36 serv2 kernel: [ 36.402674] Modules linked in: quota_v2 quota_tree nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache dm_crypt rc_dvbsky(OX) xt_tcpudp xt_recent iptable_filter ip_tables x_tables snd_hda_codec_realtek dvbsky_m88rs6000(OX) snd_hda_intel snd_hda_codec kvm_amd snd_hwdep smipcie(OX) dvb_core(OX) kvm snd_pcm rc_core(OX) snd_page_alloc snd_timer snd soundcore serio_raw i2c_piix4 edac_core edac_mce_amd k10temp shpchp mac_hid parport_pc ppdev lp parport pata_acpi hid_generic usbhid radeon hid i2c_algo_bit ttm drm_kms_helper pata_atiixp ahci libahci atl1c drm wmi My other linux clients were able to mount the NFS share without difficulty. I have rolled the server back to the previous kernel (3.13.0-65-generic) and NFS works fine with the Macs. (Note that the problem exists with both my Macs, running OSX 10.10.5 and 10.11.1) --- AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-66-generic. AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.16 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Error: [Errno 2] No such file or directory Card0.Amixer.values: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=f0e7e97e-cfde-42f5-a6a8-33d670d4f6ad InstallationDate: Installed on 2015-07-25 (91 days ago) InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) IwConfig: lo no wireless extensions. p5p1 no wireless extensions. MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-66-generic root=UUID=cba0a062-b757-496a-a056-c284b18f961b ro nomodset ProcVersionSignature: Ubuntu 3.13.0-66.108-generic 3.13.11-ckt27 RelatedPackageVersions: linux-restricted-modules-3.13.0-66-generic N/A linux-backports-modules-3.13.0-66-generic N/A linux-firmware 1.127.15 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 3.13.0-66-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/02/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.30 dmi.board.asset.tag: BC5FF4ED68C6 dmi.board.name: 960GM-VGS3 FX dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.30:bd10/02/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn960GM-VGS3FX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. 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