Why qemu-kvm is crashing with error "virtio_scsi_ctx_check: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx"

Solution In Progress - Updated -

Issue

  • VMs are using Virtio-SCSI disks and the qemu-kvm is crashing with the error below while hot plugging/unplugging the disk.
virtio_scsi_ctx_check: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx
  • The issue is observed in the backup vendor's agent VMs in RHV where there will be lot of disk hot plugging/unplugging happening while doing the backup of VMs.

Environment

  • Red Hat Virtualization 4.4.
  • Red Hat Enterprise Linux 8.2.

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