On Wed, Sep 2, 2009 at 2:58 PM, Chris Worley<[email protected]> wrote: > On Wed, Sep 2, 2009 at 2:00 PM, Bart Van Assche<[email protected]> > wrote: >> On Wed, Sep 2, 2009 at 9:53 PM, Chris Worley<[email protected]> wrote: >>> On Wed, Sep 2, 2009 at 1:31 PM, Bart Van Assche<[email protected]> >>> wrote: >>>> On Tue, Sep 1, 2009 at 1:04 AM, Chris Worley<[email protected]> wrote: >>>>> [ ... ] >>>>> I've found a good kernel/scst mix to easily repeat this; I can get it >>>>> to repeatedly hang w/ 8K block transfers running Ubuntu 9.04 w/ the >>>>> 2.6.27-14-server kernel on _both_ target and initiator (i.e. no WinOF >>>>> or OFED at all) and SCST rev 1062 on the target using one drive >>>>> (performance is >600MB/s, >80K IOPS, on the 8KB block sizes being >>>>> used). >>>>> [ ... ] >>>> >>>> Is there a special reason why you are using the 2.6.27-14-server >>>> kernel ? AFAIK the latest Ubuntu 9.04 kernel is 2.6.28-15-server. >>> >>> No special reason other than it didn't get upgraded w/ the rest of the >>> distro... started w/ 8.10. > > I'm upgrading too, to 9.04.
I tried the 2.6.28-15-server kernel (along w/ the 9.04 upgrade), and it does repeat the issue. In trying to build a kernel w/ lockdep support as Vlad requested, my lack of Debian knowledge shone through, and, although I believe I followed all the instructions correctly, I'm not sure if I have a 2.6.28-15 or 2.6.28-10 kernel. Anyway, the issue is still repeatable. Whatever kernel that is, I have SRP hung currently. What should I look for in /proc/lockd*? I don't think it's a kernel lock... I think it's a protocol lock, as I can rmmod the target kernel modules (scst_vdisk, scst, and ib_srpt) when the initiator gets in this state. Thanks, Chris > > Chris >>> >>> Do you think that kernel is better? >> >> I noticed this while trying to reproduce this issue. I have no opinion >> yet about which of these two kernels is better. I'll downgrade the >> Ubuntu kernel in my setup. >> >> Bart. >> > _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
