Commit 80dd1aae authored by Kevin Shanahan's avatar Kevin Shanahan Committed by Kevin Wolf
Browse files

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: default avatarKevin Shanahan <kmshanah@disenchant.net>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent d3e8f957

blockdev.c

+2 −0
Original line number Diff line number Diff line
@@ -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;