[v3,0/3] Fix data corruption within preallocation

Message

Andrey Drobyshev July 16, 2024, 2:41 p.m. UTC

v2 -> v3:

  * Patch 2: modify test case.  Increase number of requests from 1024 to
    2048; make odd requests write actual data, while even requests cause
    write_zeroes operation;

  * Add patch 3: add scripts/filev2p.py for mapping of virtual file
    offsets to physical block device offsets.  The script was used to
    initially track down the data corruption problem, so it's included
    here.

v2: https://lists.nongnu.org/archive/html/qemu-block/2024-07/msg00413.html

Andrey Drobyshev (2):
  iotests/298: add testcase for async writes with preallocation filter
  scripts: add filev2p.py script for mapping virtual file offsets
    mapping

Denis V. Lunev (1):
  block: zero data data corruption using prealloc-filter

 block/preallocate.c        |   8 +-
 scripts/filev2p.py         | 311 +++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/298     |  49 ++++++
 tests/qemu-iotests/298.out |   4 +-
 4 files changed, 369 insertions(+), 3 deletions(-)
 create mode 100755 scripts/filev2p.py