[pve-devel] [PATCH-SERIES qemu-server 0/3] image convert: fix handling qcow2 on snapshot-as-volume-chain dir target

[Fiona Ebner]

As reported by Friedrich, having qcow2 on a snapshot-as-volume-chain
directory storage be the target would fail with:
> Block format 'qcow2' does not support the option 'zeroinit:driver'

First patch is to work around this by just not specifying zeroinit
which leads to a performance penalty.

Following patches would fix the issue by actually using the zeroinit
driver, and we meet and old friend again with 2/3 :P (patch was
proposed once before already).

Fiona Ebner (3):
  image convert: avoid combining target image options and zeroinit
    filter
  image convert: re-use generate_drive_blockdev()
  image convert: make using zeroinit with target-image-opts work

 src/PVE/QemuServer/QemuImage.pm        | 77 ++++++++++++++++++++++----
 src/test/run_qemu_img_convert_tests.pl | 47 +++++++++++++---
 2 files changed, 107 insertions(+), 17 deletions(-)

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2.47.2