| commit | 6e13610aa454beba52944e8df6d93158d68ab911 | |
| author | Max Reitz <mreitz@redhat.com> | |
| Sun, 20 Oct 2013 19:52:35 +0000 (20 21:52 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Thu, 24 Oct 2013 09:50:51 +0000 (24 11:50 +0200) | ||
| tree | 5166de3fc9a399df930e53091e2aeaf5c18b532f | treesnapshot (tar.gz zip) |
| parent | eedff66f21e542650d895801549ce05ac108278b | commitdiff |
qcow2: Unset zero_beyond_eof in save_vmstate
Saving the VM state is done using bdrv_pwrite. This function may perform
a read-modify-write, which in this case results in data being read from
beyond the end of the virtual disk. Since we are actually trying to
access an area which is not a part of the virtual disk, zero_beyond_eof
has to be set to false before performing the partial write, otherwise
the VM state may become corrupted.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Saving the VM state is done using bdrv_pwrite. This function may perform
a read-modify-write, which in this case results in data being read from
beyond the end of the virtual disk. Since we are actually trying to
access an area which is not a part of the virtual disk, zero_beyond_eof
has to be set to false before performing the partial write, otherwise
the VM state may become corrupted.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| block/qcow2.c | diffblobblamehistory |