Bug 1475305 - migration/postcopy: Handle network failures (qemu-kvm-rhev)
migration/postcopy: Handle network failures (qemu-kvm-rhev)
Status: NEW
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
: rc
: ---
Assigned To: Peter Xu
Depends On:
Blocks: 1469590 1475431
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Reported: 2017-07-26 08:18 EDT by Dr. David Alan Gilbert
Modified: 2017-08-16 08:25 EDT (History)
6 users (show)

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: 1475431 (view as bug list)
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Description Dr. David Alan Gilbert 2017-07-26 08:18:59 EDT
Description of problem:
A failure of the migration network during the postcopy phase of migration is fatal; we can't restart the source since the current state is spread between the two hosts.  We want to be able to reconnect the migration stream and complete the migration after someone has fixed the network

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Start a migration
2. switch to postcopy mode
3. take an axe to the network cable
4. wait for TCP timeout
5. Replace network cable

Actual results:
Migration fails after the TCP timeout, the destination VM fails, and can't be restarted.

Expected results:
Some way to recover.

Additional info:

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