On Thu, Nov 15, 2007 at 03:02:45PM -0600, Scott Moseman wrote: > I guess my problems are never completely eliminated... :) > > Setup device-mapper multipathing in RHEL 4 > http://kbase.redhat.com/faq/FAQ_51_7170.shtm > > Per the above KB, after the multipath daemon is configured and > started, "The multipath -v2 command prints out multipathed paths that > show which devices are multipathed. If the command does not print > anything out, ensure that all SAN connections are set up properly and > the system is multipathed." > > # multipath -v2 > > I get nothing on my server. Although here's what I do get. > > # multipath -l > 30690a018f015191a6472441d1500f057 > [size=4 GB][features="0"][hwhandler="0"] > \_ round-robin 0 [active] > \_ 3:0:0:0 sdc 8:32 [active][ready] > \_ round-robin 0 [enabled] > \_ 1:0:1:0 sdb 8:16 [active][ready] > > # multipath -v3 > --- snipped --- > # > # all paths in cache : > # > 30690a018f015191a6472441d1500f057 1:0:1:0 sdb 8:16 [active][ready] EQLOGIC / > 30690a018f015191a6472441d1500f057 3:0:0:0 sdc 8:32 [active][ready] EQLOGIC / > hda blacklisted > sda blacklisted > --- snipped --- > > What am I missing? As far as I can tell, I'm following the RHEL KB > perfectly and it's still not working as expected (although now I'm > much farther than before!). If you were only expecting to have /dev/sdb and /dev/sdc multipathed, then you are fine. The problem is in the Knowledge Base article. # multipath -v2 only prints out the multipath maps that it creates. If, as in your case, the map already exists, it should print nothing. # multipath -l prints out all the existing multipath devices. You should see the device node /dev/mapper/30690a018f015191a6472441d1500f057 and the symbolic link /dev/mpath/30690a018f015191a6472441d1500f057 Which you can use to access the device. If you don't like dealing with such a cumbersome name, you can always add user_friendly_names yes to the defaults section of /etc/multipath.conf -Ben > Thanks! > Scott > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
