[Qemu-devel] [Bug 601946] Re: [Feature request] qemu-img multi-threaded compressed image conversion

[Quentin Casasnovas]

It looks like qcow2_write_compressed() has been removed and turned into
a qemu co-routine in qemu 2.8.0 (released in December 2017) to support
live compressed back-ups.  Any pointers to start working on this?  We
have servers with 128 CPUs and it's very sad to see them compress on a
single CPU and take tens of minutes instead of a few seconds.. :)

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/601946

Title:
  [Feature request] qemu-img multi-threaded compressed image conversion

Status in QEMU:
  New

Bug description:
  Feature request:
  qemu-img multi-threaded compressed image conversion

  Suppose I want to convert raw image to compressed qcow2. Multi-
  threaded conversion will be much faster, because bottleneck is
  compressing data.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/601946/+subscriptions