riscv/qemu - qemu - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Kevin Wolf	27e42789b7	qemu-iotests: Fix 232 for non-qcow2 232 is marked as generic, but commit `12efe428c9` added code that assumes qcow2. What the new test really needs is backing files and support for updating the backing file link (.bdrv_change_backing_file). Split the non-generic code into a new test case 247 and make it work with qed, too. Signed-off-by: Kevin Wolf <kwolf@redhat.com>	7 years ago
Kevin Wolf	23dece19da	file-posix: Make auto-read-only dynamic Until now, with auto-read-only=on we tried to open the file read-write first and if that failed, read-only was tried. This is actually not good enough for libvirt, which gives QEMU SELinux permissions for read-write only as soon as it actually intends to write to the image. So we need to be able to switch between read-only and read-write at runtime. This patch makes auto-read-only dynamic, i.e. the file is opened read-only as long as no user of the node has requested write permissions, but it is automatically reopened read-write as soon as the first writer is attached. Conversely, if the last writer goes away, the file is reopened read-only again. bs->read_only is no longer set for auto-read-only=on files even if the file descriptor is opened read-only because it will be transparently upgraded as soon as a writer is attached. This changes the output of qemu-iotests 232. Signed-off-by: Kevin Wolf <kwolf@redhat.com>	7 years ago
Kevin Wolf	12efe428c9	qemu-iotests: commit to backing file with auto-read-only Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>	7 years ago
Kevin Wolf	36f808fa15	qemu-iotests: Test auto-read-only with -drive and -blockdev Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>	8 years ago