On 04/30/2012 02:32 PM, goo...@pierre-beck.de wrote: > Hi, > > this is a fairly grave bug for me. I imagine it's specific to my setup, > otherwise more people would complain. KVM or open-iscsi, or both > involved. Posting bug report here. > > The setup is: > > Dual socket Host with 2x Intel Xeon L5520 > 2x Ethernet controller: Intel Corporation 82576 Gigabit Network > Connection (rev 01) > > Debian Squeeze / Unstable mix on Host and Guest > Kernel 3.2 on Host and Guest > Qemu-KVM 1.0 (current Debian package = 1.01) > (the bug was encountered with earlier kernel / qemu versions on same > hardware)
I ran with kernel 3.3 on host and guest and it is working for me. I beat up on it pretty hard, because I have been testing vm/memory + iscsi issues. > Oddities: > - limiting rate does not prevent bug: # echo 1 > > /proc/sys/vm/drop_caches; pv -L1000k /dev/sdc > /dev/null > - writing data does not trigger bug: # cat /dev/zero > /dev/sdc > - reading while writing, triggering bug, will cause both to interrupt > - booting VM without hardware assisted virtualization, things got > worse. even queue_depth = 1 and read_ahead_kb = 64 did not help. > Does just reading work? What is in /var/log/messages when you hit problems? Could you try with some debugging on? echo 1 > /sys/module/libiscsi/parameters/debug_libiscsi_session echo 1 > /sys/module/libiscsi/parameters/debug_libiscsi_eh -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to email@example.com. To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.