[Nbd] Interesting problem with v. > 2.8
I have been using version 2.7.5 for awhile with few if any problems. I'm
using it in a network RAID5 in sort of a poor-man's SAN.
I moved to 2.8 (have tried 2.8.0-rc2, 2.8.1 and 2.8.2) and have been
getting connection errors. The connection fails when I connect via
nbd-client. Curious, I decided to connect via telnet to the nbd-server
port. It still fails. On the server side, I get an interesting error in
the logs:
Nov 12 17:26:05 stor2-1 nbd_server[1535]: Starting to serve
Nov 12 17:26:05 stor2-1 kernel: nbd-server[1535]: segfault at
0000000000000001 rip 000000000040322e rsp 00007fffff8f8330 error 6
Nov 12 17:26:05 stor2-1 nbd_server[1497]: Child exited with 0
Unfortunately my Assembly isn't good enough to start chasing down EIP or
RIP errors.
Using FC4 Linux with Kernel 2.6.14.2.
2 of the following processors in HT mode.
processor : 3
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 2.80GHz
stepping : 1
cpu MHz : 2800.227
cache size : 1024 KB
physical id : 3
siblings : 2
core id : 3
cpu cores : 1
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall
nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr
bogomips : 5600.76
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
I have tried this on multiple machines (that have identical hardware)
and it still gets the same error. I don't know if it's a kernel or
architecture issue, though I also tried various kernels
(2.6.13,2.6.13.3.,2.6.14).
Thanks for any help (and you're welcome if this helps).
--
David Bernick, CISSP | Senior Engineer
Lextranet | 107 Union Wharf | Boston, MA 02109
http://www.lextranet.com
(617)227-4469x219
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