[Xen-users] Weird tmpfs behavior -- getting trashed

[Eric Brown <yogieric@xxxxxxx>]

The symptom we're seeing is a trashed resolv.conf. However, it looks  
like is something stomped all over the tmpfs.
Every file in the /dev/shm was stomped on, including
/dev/shm/network/ifstate:

$ hexdump -C dev/shm/network/ifstate
00000000  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff   
|................|
00000010
$ hexdump -C dev/shm/resolvconf/resolv.conf.bad
00000000  a4 81 00 00 21 00 00 00  2c 57 1e 43 1e 8d 1f 43   
|....!...,W.C...C|
00000010  e9 bc 78 41 00 00 00 00  00 00 01 00 08 00 00 00   
|..xA............|
00000020  00 00 00 00 00 00 00 00  ed 3d 28 00 00 00 00 00   
|.........=(.....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
|................|
*
00000060  00 00 00 00 a1 8d 33 c5  00 00 00 00 00 00 00 00  |...... 
3.........|
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
|................|
00000080  a4 81 00 00 21 01 00 00  2c 57 1e 43 1e 8d 1f 43   
|....!...,W.C...C|
00000090  e9 bc 78 41 00 00 00 00  00 00 01 00 08 00 00 00   
|..xA............|
000000a0  00 00 00 00 00 00 00 00  ee 3d 28 00 00 00 00 00   
|.........=(.....|
000000b0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   
|................|
000000c0  00 00 00 00 00                                    |.....|
000000c5
$ hexdump -C dev/shm/resolvconf/interface/eth0.inet
00000000  a4 81 00 00 d6 75 0d 00  2a 57 1e 43 1d 8d 1f 43   
|.....u..*W.C...C|
00000010  c1 bc 78 41 00 00 00 00  00 00 01 00 c8 06 00 00   
|..xA............|
00000020  00 00 00 00 00 00 00 00  11 3b 28 00 12 3b         
|.........;(..;|
0000002e

That really shouldn't be happening.

(ifstate should look something like this:
$ cat /dev/shm/network/ifstate
lo=lo
eth0=eth0
)


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