If read-only=off, but auto-read-only=on is given, open the volume
read-write if we have the permissions, but instead of erroring out for
read-only volumes, just degrade to read-only.
Signed-off-by: Kevin Wolf <kw...@redhat.com>
---
block/iscsi.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index bb69faf34a..130ae26f5f 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -1878,9 +1878,11 @@ static int iscsi_open(BlockDriverState *bs, QDict
*options, int flags,
/* Check the write protect flag of the LUN if we want to write */
if (iscsilun->type == TYPE_DISK && (flags & BDRV_O_RDWR) &&
iscsilun->write_protected) {
- error_setg(errp, "Cannot open a write protected LUN as read-write");
- ret = -EACCES;
- goto out;
+ ret = bdrv_apply_auto_read_only(bs, "LUN is write protected", errp);
+ if (ret < 0) {
+ goto out;
+ }
+ flags &= ~BDRV_O_RDWR;
}
iscsi_readcapacity_sync(iscsilun, &local_err);
--
2.19.1
