[CentOS] Possible to run iscsi-target and initiator on same server?

C Linus Hicks linush at verizon.net
Mon Oct 12 18:25:04 UTC 2009


On Sun, 2009-10-11 at 17:14 -0400, C Linus Hicks wrote:
> strace output:
> ----------------------------------------------------------------------
  --- a bunch of lines cut ---
> socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 6
> socket(PF_NETLINK, SOCK_RAW, 0)         = 7
> bind(7, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
> getsockname(7, {sa_family=AF_NETLINK, pid=28308, groups=00000000}, [137438953484]) = 0
> sendto(7, "\24\0\0\0\22\0\1\3\365\201\321J\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
> recvmsg(7, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\370\0\0\0\20\0\2\0\365\201\321J\224n\0\0\0\0\4\3\1\0\0\0I\0\1\0\0\0\0\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 1004
> recvmsg(7, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0\365\201\321J\224n\0\0\0\0\0\0\1\0\0\0I\0\1\0\0\0\0\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 20
> sendto(7, "\24\0\0\0\26\0\1\3\366\201\321J\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
> recvmsg(7, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"<\0\0\0\24\0\2\0\366\201\321J\224n\0\0\2\10\200\376\1\0\0\0\10\0\1\0\177\0\0\1"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 196
> recvmsg(7, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"@\0\0\0\24\0\2\0\366\201\321J\224n\0\0\n\200\200\376\1\0\0\0\24\0\1\0\0\0\0\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 192
> recvmsg(7, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0\366\201\321J\224n\0\0\0\0\0\0\1\0\0\0\24\0\1\0\0\0\0\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 20
> close(7)                                = 0
> socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 7
> ioctl(7, SIOCGIFHWADDR, {ifr_name="lo", ifr_hwaddr=00:00:00:00:00:00}) = 0
> ioctl(7, SIOCGIFHWADDR, {ifr_name="eth2", ifr_hwaddr=00:1d:92:b4:50:6e}) = 0
> close(7)                                = 0
> setsockopt(6, SOL_SOCKET, SO_BINDTODEVICE, "eth2\0", 5) = 0
> setsockopt(6, SOL_TCP, TCP_NODELAY, [1], 4) = 0
> setsockopt(6, SOL_SOCKET, SO_RCVBUF, [524288], 4) = 0
> getsockopt(6, SOL_SOCKET, SO_RCVBUF, [4296015872], [4]) = 0
> setsockopt(6, SOL_SOCKET, SO_SNDBUF, [524288], 4) = 0
> getsockopt(6, SOL_SOCKET, SO_SNDBUF, [4296015872], [4]) = 0
> fcntl(6, F_GETFL)                       = 0x2 (flags O_RDWR)
> fcntl(6, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
> connect(6, {sa_family=AF_INET, sin_port=htons(3260), sin_addr=inet_addr("10.200.1.6")}, 128) = -1 EINPROGRESS (Operation now in progress)
> poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=0, events=0}], 3, 250) = 0 (Timeout)
> poll([{fd=6, events=POLLOUT}], 1, 1)    = 0 (Timeout)
  --- a bunch more lines cut ---

So by looking in the code, it will avoid binding to the device under
"default" conditions. I removed the MAC address from the iface0 file and
the login works.




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