I seem to have a similar problem. Linux 2.6.24-18-xen #1 SMP Wed May 28 22:50:01 UTC 2008 x86_64 GNU/Linux Hardware: Dell PowerEdge 2900 with PERC5/i
Stumbled across this when doing some disk performance tests. /dev/sda and /dev/sdb are disks on the PERC (setup as two separate single disk raid0) /dev/md3 is a software raid1 from /dev/sda5 and /dev/sdb5. I changed the scheduler from the default cfq to deadline echo deadline > /sys/block/sda/queue/scheduler echo deadline > /sys/block/sdb/queue/scheduler When I run this commands (or similar): dd if=/dev/zero of=/dev/md3 bs=4K count=16K I get a kernel panic, but _only_ when I'm not using the cfq scheduler. noop, anticipatory and deadline all give the same behaviour (kernelpanic) but not cfq (at least I haven't been able to make it crash) It doesn't happen with a non Xen kernel either. I get these messages in the console PCI-DMA: Out of SW-IOMMU space for 65536 bytes at device 0000:02:0e.0 [ 269.070347] ------------[ cut here ]------------ [ 269.097818] kernel BUG at /build/buildd/linux-2.6.24/debian/build/custom-source-xen/drivers/scsi/megaraid/megaraid_sas.c:466! [ 269.165440] invalid opcode: 0000 [1] SMP See attachment for full console output... ** Attachment added: "kernelpanic.txt" http://launchpadlibrarian.net/15355881/kernelpanic.txt -- Xen dom0 crash when writing to LVM volume with DELL PERC 5/i RAID https://bugs.launchpad.net/bugs/227120 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
