Copying this mail to linux-scsi and Ccing Andrew Vasquez to possibly provide input on the Qlogic behavior. Chandra Seetharaman <sekharan@xxxxxxxxxx> wrote: > On Thu, 2007-07-12 at 18:35 -0700, Brian De Wolf wrote: > > Hello All, > > > > I'm not sure if this is the right place for this, but it seems to be the only > > mailing list related to dm, multipath, and rdac, as far as I can tell. I've > > been trying out the dm-mpath-rdac patch (both yesterday's and previous) with > > gentoo's unstable 2.6.22 kernel, on a Sun x4100 through a QLA2422 HBA (firmware > > ql2400_fw.bin.4.00.27) to an IBM DS4000. I am using a version of > > multipath-tools that I got with git a few days ago. > > > > I've got multipath working, it reports the hwhandler correctly ([hwhandler=1 > > rdac]), and the volume is mountable, etc. It also shows one link as active, the > > other as ghost. However, once the active link dies, the volume becomes read > > only, and both connections are listed as failed. Most importantly, something > > like this shows up in the logs: > > > > Jul 12 17:11:15 jimbo kernel: device-mapper: multipath rdac: queueing > > MODE_SELECT command on 8:32 > > It does look like the rdac hardware handler is doing the right thing and > the qlogic is dying for some reason. > > I have tested this code in both RHEL5 and SLES10 environments (qla23xx) > and they work fine. Can you try in one of those and see if it is any > different. > > Just an FYI w.r.t multipath tools: please remove the patch > http://git.kernel.org/?p=linux/storage/multipath- > tools/.git;a=commit;h=e1e1a1bfb2cf76bfd1a49335e3deec5360fb09db from your > tree for the tools to calculate the path priorities properly. > > > > Jul 12 17:11:15 jimbo kernel: qla2xxx 0000:02:01.1: ISP System Error - mbx1=0h > > mbx2=8012h mbx3=8002h. > > Jul 12 17:11:15 jimbo kernel: qla2xxx 0000:02:01.1: Firmware has been previously > > dumped (ffffc2000171d000) -- ignoring request... > > Jul 12 17:11:16 jimbo kernel: qla2xxx 0000:02:01.1: Performing ISP error > > recovery - ha= ffff81007e85c530. > > Jul 12 17:11:16 jimbo kernel: device-mapper: multipath: Failing path 8:32. > > Jul 12 17:11:16 jimbo kernel: Buffer I/O error on device dm-6, logical block 0 > > Jul 12 17:11:16 jimbo kernel: Buffer I/O error on device dm-6, logical block 1 > > Jul 12 17:11:16 jimbo kernel: Buffer I/O error on device dm-6, logical block 2 > > Jul 12 17:11:16 jimbo kernel: Buffer I/O error on device dm-6, logical block 3 > > Jul 12 17:11:16 jimbo kernel: Buffer I/O error on device dm-6, logical block 0 > > Jul 12 17:11:16 jimbo multipathd: 8:32: mark as failed > > Jul 12 17:11:16 jimbo multipathd: test: remaining active paths: 0 > > > > While this may be something for the maintainer of the qla2xxx module (I can't > > figure out where I'd send it, in that case...) I think it may be of interest > > that the dm_rdac module tries to push something over the HBA that causes it to > > bail completely and start from scratch (it starts init processes and loading > > firmware again). > > > > Not to say that I'm not interested in any help getting this working, that is. > > If you have any suggestions on how to get this working, I'd love to hear them. > > I'm also willing to guinea pig some testing if you need it (This box still has a > > bit before it will have to be put in use). I may use redhat to ensure that it's > > not just a broken HBA, but for the long run we would like it to join our gentoo > > environment. > > > > Thanks! > > Brian De Wolf > > > > PS- If the subject mislead you because you feel that this is just a qla2xxx > > problem, I'm sorry for wasting your time. > > > > -- > > dm-devel mailing list > > dm-devel@xxxxxxxxxx > > https://www.redhat.com/mailman/listinfo/dm-devel > -- > > ---------------------------------------------------------------------- > Chandra Seetharaman | Be careful what you choose.... > - sekharan@xxxxxxxxxx | .......you may get it. > ---------------------------------------------------------------------- > > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -andmike -- Michael Anderson andmike@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
