[Bug 1004606] Re: virsh create-snapshot fails to create external snapshot (blockdev-snapshot-sync fails in json monitor)

[murrayy]

I think it's apparmor, I had an similar error and it went away by deactivating the corresponding apparmor profile.
Check your syslog for apparmor messages please.

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Title:
  virsh create-snapshot fails to create external snapshot (blockdev-
  snapshot-sync fails in json monitor)

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