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| H A D | block.c | diff 5fbfabd313b77e1cc7038ae8c4481c4b9f8b650a Thu Nov 30 10:38:43 CST 2017 Kevin Wolf <kwolf@redhat.com> block: Formats don't need CONSISTENT_READ with NO_IO
Commit 1f4ad7d fixed 'qemu-img info' for raw images that are currently
in use as a mirror target. It is not enough for image formats, though,
as these still unconditionally request BLK_PERM_CONSISTENT_READ.
As this permission is geared towards whether the guest-visible data is
consistent, and has no impact on whether the metadata is sane, and
'qemu-img info' does not read guest-visible data (except for the raw
format), it makes sense to not require BLK_PERM_CONSISTENT_READ if there
is not going to be any guest I/O performed, regardless of image format.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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