Spent an hour trying to find the answer to this on the various SO, SF, other usual suspects, but have failed.
I'm trying to improve a parallel rsync wrapper called parsyncfp (pfp) in response to a user request. He wants rsync to emit data on multiple interfaces (one interface per rsync instance). From the man page it seems like the '--address' option would do that and in fact using it as such does not result in an error, but it also does not result in both interfaces being used, either from pfp or when launched directly from different shells. My route (working from home) shows the 2 wlan interfaces up with different IP #s: wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.223 netmask 255.255.255.0 broadcast 192.168.1.255 ... wlx9cefd5fb0bb5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.186 netmask 255.255.255.0 broadcast 192.168.1.255 ... and route shows: $ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default router.asus.com 0.0.0.0 UG 601 0 0 wlx9cefd5fb0bb5 default router.asus.com 0.0.0.0 UG 602 0 0 wlp3s0 link-local 0.0.0.0 255.255.0.0 U 1000 0 0 wlp3s0 192.168.1.0 0.0.0.0 255.255.255.0 U 601 0 0 wlx9cefd5fb0bb5 192.168.1.0 0.0.0.0 255.255.255.0 U 602 0 0 wlp3s0 and while the arp results from the rsyncing machine look OK: $ arp -n Address HWtype HWaddress Flags Mask Iface 192.168.1.107 ether 90:73:5a:f1:23:ee C wlx9cefd5fb0bb5 192.168.1.107 ether 90:73:5a:f1:23:ee C wlp3s0 192.168.1.1 ether 74:d0:2b:5e:32:40 C wlp3s0 192.168.1.139 ether d8:31:34:64:bc:f0 C wlp3s0 192.168.1.139 ether d8:31:34:64:bc:f0 C wlx9cefd5fb0bb5 192.168.1.198 ether 94:94:26:08:b2:4e C wlx9cefd5fb0bb5 192.168.1.1 ether 74:d0:2b:5e:32:40 C wlx9cefd5fb0bb5 the arp table from another machine on the same net show this: $ arp -n Address HWtype HWaddress Flags Mask Iface 192.168.1.203 ether b0:68:e6:3d:58:a7 C wlp3s0 192.168.1.107 ether 90:73:5a:f1:23:ee C wlp3s0 192.168.1.186 ether 9c:ef:d5:fb:0b:b5 C wlp3s0 192.168.1.1 ether 74:d0:2b:5e:32:40 C wlp3s0 192.168.1.223 ether 9c:ef:d5:fb:0b:b5 C wlp3s0 and the rsync machine is the .186 and .223 above, indicating that the 2 interfaces are regarded as the same MAC. The alternating rsync commands generated from pfp are: rsync --address=192.168.1.223 --bwlimit=1000000 -a -s --log-file=/home/hjm/.parsyncfp/rsync-logfile-14.34.52_2021-03-25_16 --files-from=/home/hjm/.parsyncfp/fpcache/f.16 '/home/hjm' bridgit:/home/hjm/test and rsync --address=192.168.1.186 --bwlimit=1000000 -a -s --log-file=/home/hjm/.parsyncfp/rsync-logfile-14.34.52_2021-03-25_17 --files-from=/home/hjm/.parsyncfp/fpcache/f.17 '/home/hjm' bridgit:/home/hjm/test But the byte streams show only data flowing on one. This is the case whether the rsyncs are started from parsyncfp or via separate rsyncs started from separate shells. Before I go further down the rabbit hole and start messing with ARP tables and network namespaces, was this the intent of the option or am I misunderstanding it? On the server side, the --address option seems to be used to bind the responding IP# and while I haven't tried that, that seems to be straightforward (but not useful for me). thanks in advance for such a magical program Harry -- Harry Mangalam
-- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html