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[Qemu-devel] [Bug 1810590] [NEW] Record/replay example does not work


From: Andreas Gustafsson
Subject: [Qemu-devel] [Bug 1810590] [NEW] Record/replay example does not work
Date: Sat, 05 Jan 2019 12:43:52 -0000

Public bug reported:

Trying the record part of the record/replay example at
https://github.com/qemu/qemu/blob/master/docs/replay.txt qemu
immediately hangs with no guest output displayed.  This is with qemu
from today's git (e59dbbac0364344a3ad84c3497a98c56003d3fb8).

To reproduce:

  wget
https://people.debian.org/~aurel32/qemu/i386/debian_squeeze_i386_standard.qcow2

  mv debian_squeeze_i386_standard.qcow2 disk.qcow2

  qemu-system-i386 \
       -icount shift=7,rr=record,rrfile=replay.bin \
       -drive file=disk.qcow2,if=none,id=img-direct \
       -drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay \
       -device ide-hd,drive=img-blkreplay \
       -netdev user,id=net1 -device rtl8139,netdev=net1 \
       -object filter-replay,id=replay,netdev=net1

The above qemu command line is exactly the same as in the example.

Tested on a Debian 9 x86_64 host.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1810590

Title:
  Record/replay example does not work

Status in QEMU:
  New

Bug description:
  Trying the record part of the record/replay example at
  https://github.com/qemu/qemu/blob/master/docs/replay.txt qemu
  immediately hangs with no guest output displayed.  This is with qemu
  from today's git (e59dbbac0364344a3ad84c3497a98c56003d3fb8).

  To reproduce:

    wget
  
https://people.debian.org/~aurel32/qemu/i386/debian_squeeze_i386_standard.qcow2

    mv debian_squeeze_i386_standard.qcow2 disk.qcow2

    qemu-system-i386 \
         -icount shift=7,rr=record,rrfile=replay.bin \
         -drive file=disk.qcow2,if=none,id=img-direct \
         -drive driver=blkreplay,if=none,image=img-direct,id=img-blkreplay \
         -device ide-hd,drive=img-blkreplay \
         -netdev user,id=net1 -device rtl8139,netdev=net1 \
         -object filter-replay,id=replay,netdev=net1

  The above qemu command line is exactly the same as in the example.

  Tested on a Debian 9 x86_64 host.

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