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Diffstat (limited to 'results/scraper/launchpad-without-comments/1779120')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1779120 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1779120 b/results/scraper/launchpad-without-comments/1779120 new file mode 100644 index 000000000..40408bd0a --- /dev/null +++ b/results/scraper/launchpad-without-comments/1779120 @@ -0,0 +1,18 @@ +disk missing in the guest contingently when hotplug several virtio scsi disks consecutively + +Hi, I found a bug that disk missing (not all disks missing ) in the guest contingently when hotplug several virtio scsi disks consecutively. After rebooting the guest,the missing disks appear again. + +The guest is centos7.3 running on a centos7.3 host and the scsi controllers are configed with iothread. The scsi controller xml is below: + + <controller type='scsi' index='0' model='virtio-scsi'> + <driver iothread='26'/> + <alias name='scsi0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> + </controller> + + +If the scsi controllers are configed without iothread, disks are all can be seen in the guest when hotplug several virtio scsi disks consecutively. + +I think the biggest difference between them is that scsi controllers with iothread call virtio_notify_irqfd to notify guest and scsi controllers without + +iothread call virtio_notify instead. What make it difference? Will interrupts are lost when call virtio_notify_irqfd due to race condition for some unknow reasons? Maybe guys more familiar with scsi dataplane can help. Thanks for your reply! \ No newline at end of file |