I'm currently running 3.4.26 on quite a few machines with no problem (debian 6 userland). On a brand new machine (dual ivy bridge, 256G of ram), exportfs is not able to export nfs filesystems...
Here's the contents of /etc/exports:
/iris 192.168.0.0/255.255.128.0(rw,no_root_squash,no_subtree_check,fsid=0)
When I run exportfs -a in strace:
6701 open("/etc/exports", O_RDONLY) = 3
6701 fstat(3, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
6701 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9614629000
6701 read(3, "# This file is automatically generated. DO NOT EDIT.\n#\n# This file defines network filesystems exported by master board controller.\n# These filesystems primarily provide a means for booting diskless blades,\n# as well as relaying configuration information "..., 4096) = 707
6701 open("/proc/fs/nfsd/export_features", O_RDONLY) = 4
6701 read(4, "0x17e3f 0xf\n", 50) = 12
6701 lstat("/iris", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
6701 read(3, "", 4096) = 0
6701 read(3, "", 4096) = 0
6701 close(3) = 0
6701 munmap(0x7f9614629000, 4096) = 0
6701 stat("/iris", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
6701 open("/proc/net/rpc/auth.unix.ip/channel", O_WRONLY) = 3
6701 write(3, "nfsd 0.0.0.0 2147483647 -test-client-\n", 38) = 38
6701 close(3) = 0
6701 open("/proc/net/rpc/nfsd.export/channel", O_WRONLY) = 3
6701 close(3) = 0
6701 statfs("/iris", {f_type="EXT2_SUPER_MAGIC", f_bsize=4096, f_blocks=7692434, f_bfree=5253463, f_bavail=4862710, f_files=1954064, f_ffree=1808133, f_fsid={1266779845, 50719849}, f_namelen=255, f_frsize=4096}) = 0
6701 open("/proc/net/rpc/nfsd.export/channel", O_WRONLY) = 3
6701 write(3, "-test-client- /iris 3 8192 -1 -1 0\n", 35) = -1 ENOENT (No such file or directory)
6701 close(3) = 0
Looking at some of the kernel code, I found that auth_domain_find in fs/nfsd/export.c around line 514 is returning NULL.
I'm at a complete loss because this exact setup (same kernel exactly, same exports, everything) is working on a separate machine. The only difference is the underlying hardware. My kernel config is attached.
Attachment:
config.gz
Description: config.gz
