Comment 3 for bug 1890501
Revision history for this message
| Lee Yarwood (lyarwood) wrote Re: Soft reboot after live-migration reverts instance to original source domain XML | #3 |
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73416ba
(Get the code!)
Apologies, I've added the following to the initial description, let me know if you would like any more details.
"""
When live migrating instances with attached volumes Nova will first ensure that the volumes are connected on the destination before updating the underlying domain XML to be used on the destination to correctly map to these volumes.
At present in the case of volumes connected over iSCSI or FC this ensures that the instance points to the correct host block devices as these may differ from the source.
However if a user requests a soft reboot of an instance after a successful live migration the underlying libvirt domain will rollback to the XML definition used on the source. In the case of volumes provided over iSCSI or FC etc this can potentially lead to the wrong
volume being attached to the instance on the destination leading to possible data exfiltration or corruption.
"""