From: Kevin Shanahan Date: Thu, 20 Sep 2012 23:20:22 +0000 (+0930) Subject: blockdev: preserve readonly and snapshot states across media changes X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=80dd1aae3657a902d262f5d20a7a3c655b23705e;p=qemu.git blockdev: preserve readonly and snapshot states across media changes If readonly=on is given at device creation time, the ->readonly flag needs to be set in the block driver state for this device so that readonly-ness is preserved across media changes (qmp change command). Similarly, to preserve the snapshot property requires ->open_flags to be correct. Signed-off-by: Kevin Shanahan Signed-off-by: Kevin Wolf --- diff --git a/blockdev.c b/blockdev.c index 7c83baa353..e5d450f0bb 100644 --- a/blockdev.c +++ b/blockdev.c @@ -527,6 +527,8 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi) if_name[type], mediastr, unit_id); } dinfo->bdrv = bdrv_new(dinfo->id); + dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; + dinfo->bdrv->read_only = ro; dinfo->devaddr = devaddr; dinfo->type = type; dinfo->bus = bus_id;