System stucked in dracut after the migration of a RHEL VM to hyper-v

Solution Verified - Updated -

Issue

  • The migration from one hypervisor (ESX for example) to Hyper-v of a Red Hat virtual machine leads to a can't boot issue with a system stuck in dracut or unable to find the root files system with this kind of message:
/dev/mapper/rhel-root does not exist
end_request: I/O error
blk_update_request: I/O
dracut:/#

Environment

  • Red Hat Enterprose Linux 6, 7
    • Hyper-V

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