提交 513cdda1 编写于 作者: K Kevin Shanahan 提交者: Michael Roth

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: NKevin Shanahan <kmshanah@disenchant.net>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
(cherry picked from commit 80dd1aae)
Signed-off-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
上级 eea54caa
...@@ -527,6 +527,8 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi) ...@@ -527,6 +527,8 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
if_name[type], mediastr, unit_id); if_name[type], mediastr, unit_id);
} }
dinfo->bdrv = bdrv_new(dinfo->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->devaddr = devaddr;
dinfo->type = type; dinfo->type = type;
dinfo->bus = bus_id; dinfo->bus = bus_id;
......
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