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I had a bug in my nfs server... just after boot, all clients were receiving

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"Permission denied" until I run "restart nfs-kernel-exports". "exportfs -ra" did not help.

I tracked that down to some race condition between loading the module nfsd and
starting the daemons. Therefore, I decided to add nfsd to the boot.kernelModules instead
of using modprove with it.

Now it works for my server. No more Permission denied after reboot.


svn path=/nixos/trunk/; revision=31113
This commit is contained in:
Lluís Batlle i Rossell 2011-12-27 18:08:05 +00:00
parent 8bc381c4cd
commit ef1755f3c0
1 changed files with 9 additions and 4 deletions
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13
modules/services/network-filesystems/nfs-kernel.nix
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@ -112,6 +112,14 @@ in
target = "exports"; target = "exports";
}); });
/* We have to load this quite before running the daemons. Using
"modprobe nfsd" when loading the daemons causes a race condition where
nfsd can return 'authentication failed'/'Permission denied'.
I've not tried with nfsd alone. So I add what I tried, with nfs_acl too.
*/
boot.kernelModules = mkIf cfg.server.enable [ "nfsd" "nfs_acl" ];
jobs = jobs =
optionalAttrs cfg.server.enable optionalAttrs cfg.server.enable
{ nfs_kernel_exports = { nfs_kernel_exports =
@ -119,7 +127,7 @@ in
description = "Kernel NFS server"; description = "Kernel NFS server";
startOn = "started network-interfaces and started portmap"; startOn = "started network-interfaces and started portmap and filesystem";
postStart = postStart =
'' ''
@ -147,9 +155,6 @@ in
# Create a state directory required by NFSv4. # Create a state directory required by NFSv4.
mkdir -p /var/lib/nfs/v4recovery mkdir -p /var/lib/nfs/v4recovery
# rpc.nfsd needs the kernel support
${config.system.sbin.modprobe}/sbin/modprobe nfsd || true
${pkgs.sysvtools}/bin/mountpoint -q /proc/fs/nfsd \ ${pkgs.sysvtools}/bin/mountpoint -q /proc/fs/nfsd \
|| ${config.system.sbin.mount}/bin/mount -t nfsd none /proc/fs/nfsd || ${config.system.sbin.mount}/bin/mount -t nfsd none /proc/fs/nfsd