[Bug 1926596] Re: qemu-monitor-event command gets stuck randomly

[Thomas Huth <1926596@bugs.launchpad.net>]

The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting the bug state to "Incomplete" now.

If the bug has already been fixed in the latest upstream version of QEMU,
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Thank you and sorry for the inconvenience.


** Summary changed:

- qemu-monitor-event command stukcs randomly
+ qemu-monitor-event command gets stuck randomly

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1926596

Title:
  qemu-monitor-event command gets stuck randomly

Status in QEMU:
  Incomplete

Bug description:
  We are using kvm virtualization on our servers, We use "qemu-monitor-command"(drive-backup) to take qcow2 backups and to monitor them we use "qemu-monitor-event" command 
  For eg:-
  /usr/bin/virsh qemu-monitor-event VPSNAME --event "BLOCK_JOB_COMPLETED\|BLOCK_JOB_ERROR" --regex

  the above command stucks randomly (backup completes but still it is
  waiting) and because of which other vms backup are stucked until we
  kill that process.

  Can you suggest how can we debug this further to find the actual
  issue.

  
  /usr/bin/virsh version

  Compiled against library: libvirt 4.5.0
  Using library: libvirt 4.5.0
  Using API: QEMU 4.5.0
  Running hypervisor: QEMU 2.0.0

  cat /etc/os-release
  NAME="CentOS Linux"
  VERSION="7 (Core)"
  ID="centos"
  ID_LIKE="rhel fedora"
  VERSION_ID="7"
  PRETTY_NAME="CentOS Linux 7 (Core)"
  ANSI_COLOR="0;31"
  CPE_NAME="cpe:/o:centos:centos:7"
  HOME_URL="https://www.centos.org/"
  BUG_REPORT_URL="https://bugs.centos.org/"

  CENTOS_MANTISBT_PROJECT="CentOS-7"
  CENTOS_MANTISBT_PROJECT_VERSION="7"
  REDHAT_SUPPORT_PRODUCT="centos"
  REDHAT_SUPPORT_PRODUCT_VERSION="7"

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