On 23.11.2015 16:59, Kevin Wolf wrote: > qcow2 accepts a few driver-specific options that overlap semantically > (e.g. "overlap-check" is an alias of "overlap-check.template", and any > missing cache size option is derived from the given ones). > > When bdrv_reopen() merges the set of updated options with left out > options that should be kept at their old value, we need to consider this > and filter out any duplicates (which would generally cause errors > because new and old value would contradict each other). > > This patch adds a .bdrv_join_options callback to BlockDriver and > implements it for qcow2. > > Signed-off-by: Kevin Wolf <kw...@redhat.com> > --- > block/qcow2.c | 47 > +++++++++++++++++++++++++++++++++++++++++++++++ > include/block/block_int.h | 1 + > 2 files changed, 48 insertions(+)
Reviewed-by: Max Reitz <mre...@redhat.com>
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