On Aug 26, 2014, at 6:49 PM, Michael Christie <micha...@cs.wisc.edu> wrote:
> > On Aug 26, 2014, at 3:11 PM, Learner <learner.st...@gmail.com> wrote: > >> Another related observation and some questions; >> >> I am using open iscsi on init with IET on trgt over a single 10gbps link >> >> There are three ip aliases on each side >> >> I have 3 ramdisks exported by IET to init >> >> I do iscsi login 3 times, once using each underlying ip address and notice >> that each iscsi session sees all 3 disks. >> >> Is it possible to restrict such that each init only sees one separate disk? >> > > There is no iscsi initiator or target setting for this. The default is to > show all paths (each /dev/sdx is a path to the same device).. > > You would have to manually delete some paths by doing > > echo 1 > /sys/block/sdX/device/remove > >> When I run fio on each mounted disk, I see that only two underlying tcp >> sessions are being used - that limits the perf. >> Any ideas on how to overcome this? > > How are you matching sessions with devices? It should just be a matter of > running fio on the right devices. If you run: > > iscsiadm -m session -P 3 > > you can see how the sdXs match up with sessions/connections. If you run fio > to a /dev/sdX from each session, you should be seeing IO to all 3 sessions. > How are you determining if a session is being used or not? Are you running the iscsiadm -m session --stats command, watching with wireshark/tcpdump or something else? If you have all three IPs on the same subnet, then it is going to be a little more complicated than what I described above. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to open-iscsi+unsubscr...@googlegroups.com. To post to this group, send email to open-iscsi@googlegroups.com. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
