Bug 16239
| Summary: | NFS mount file system from multi-homed remote host sometimes fails | ||
|---|---|---|---|
| Product: | Base System | Reporter: | kannanv <kannanv> |
| Component: | kern | Assignee: | Matt Dillon <dillon> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 3.3-RELEASE | ||
| Hardware: | Any | ||
| OS: | Any | ||
Responsible Changed From-To: freebsd-bugs->dillon Change responsible to NFS maintainer State Changed From-To: open->closed Nfsd(8) now has the `-h' option which can be used to solve this problem. |
Remote host has interfaces: 135.104.73.11/29, 135.104.73.129/29; Remote filesystem is /dev/wd0s4e mounted on /local Local host is 135.104.73.82/29. 135.104.73.11 is nearest interface through multiple hops. From local host: mount 135.104.73.11:/local /mnt succeeds, but mount 135.104.73.129:/local /mnt fails. FYI, the /etc/exports file on remote host is (although this appears irrelevant), yankees# more /etc/exports /local -alldirs -maproot=0 -network=135.104.73 -mask=255.255.255.0 /local -alldirs -maproot=0 -network=135.180.182 -mask=255.255.255.0 /local -alldirs -maproot=0 malgudi.dnrc.bell-labs.com /local -alldirs -maproot=0 malgudi.research.bell-labs.com /local -alldirs -maproot=0 kannanvpc.research.bell-labs.com /cdrom ------------------------------------------------------------------------ A tcpdump trace on remote host shows the following (There are multiple sequences of sunrpc and nfs requests back and forth, but this one appears to indicate the problem: 16:31:54.084947 0:90:27:61:e7:99 0:50:4:b1:f0:90 0800 162: 135.104.73.82.2094666972 > 135.104.73.129.2049: 120 getattr [|nfs] 4500 0094 012d 0000 3d11 da88 8768 4952 8768 4981 03e5 0801 0080 d6a1 7cda 14dc 0000 0000 0000 0002 0001 86a3 0000 0003 0000 0001 0000 16:31:54.085012 0:50:4:b1:f0:90 0:60:1d:9:0:5a 0800 154: 135.104.73.11.2049 > 135.104.73.82.2094666972: reply ok 112 getattr [|nfs] 4500 008c 0194 0000 4011 d79f 8768 490b 8768 4952 0801 03e5 0078 152e 7cda 14dc 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 16:31:54.085486 0:60:1d:9:0:5a 0:50:4:b1:f0:90 0800 70: 135.104.73.82 > 135.104.73.11: icmp: 135.104.73.82 udp port 997 unreachable 4500 0038 012e 0000 fd01 1b69 8768 4952 8768 490b 0303 5e31 0000 0000 4500 008c 9401 0000 3e11 d99f 8768 490b 8768 4952 0801 03e5 0078 I have the full tcpdump traces of both the success and failure conditions are on request. How-To-Repeat: Have a multi-homed host as above; attempt to mount a filesystem by explicitly specifying the addresses of different interfaces.