Public bug reported:
When using "qemu-img convert" to create a VDI image, the VDI image is
valid, but may contain an altered disk image. When such an image is run
under VirtualBox, subtle bugs such as spontaneous segmentation faults
happen because of broken system libraries.
The following set of commands reproduces the bug (using the provided
test disk image slice):
bunzip2 < test-2M-2.raw.bz2 > test.raw
qemu-img convert -O vdi test.raw test-2.vdi
qemu-img convert -O raw test-2.vdi test-2.raw
diff -qs test.raw test-2.raw
# Output: Files test.raw and test-2.raw differ
If the VDI image is created via "VBoxManage convertfromraw", everything
is okay:
VBoxManage convertfromraw test.raw test-3.vdi --format VDI 2>/dev/null
qemu-img convert -O raw test-3.vdi test-3.raw
diff -qs test.raw test-3.raw
# Output: Files test.raw and test-3.raw are identical
** Affects: qemu
Importance: Undecided
Status: New
** Tags: qemu-img
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/984953
Title:
qemu-img alters (breaks) disk image content when converting to VDI
Status in QEMU:
New
Bug description:
When using "qemu-img convert" to create a VDI image, the VDI image is
valid, but may contain an altered disk image. When such an image is
run under VirtualBox, subtle bugs such as spontaneous segmentation
faults happen because of broken system libraries.
The following set of commands reproduces the bug (using the provided
test disk image slice):
bunzip2 < test-2M-2.raw.bz2 > test.raw
qemu-img convert -O vdi test.raw test-2.vdi
qemu-img convert -O raw test-2.vdi test-2.raw
diff -qs test.raw test-2.raw
# Output: Files test.raw and test-2.raw differ
If the VDI image is created via "VBoxManage convertfromraw",
everything is okay:
VBoxManage convertfromraw test.raw test-3.vdi --format VDI 2>/dev/null
qemu-img convert -O raw test-3.vdi test-3.raw
diff -qs test.raw test-3.raw
# Output: Files test.raw and test-3.raw are identical
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/984953/+subscriptions
