diff options
| -rw-r--r-- | block/iscsi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 029739eb61..ac65277048 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -1022,6 +1022,16 @@ static int iscsi_open(BlockDriverState *bs, const char *filename, int flags) if (iscsi_url != NULL) { iscsi_destroy_url(iscsi_url); } + + /* Medium changer or tape. We dont have any emulation for this so this must + * be sg ioctl compatible. We force it to be sg, otherwise qemu will try + * to read from the device to guess the image format. + */ + if (iscsilun->type == TYPE_MEDIUM_CHANGER || + iscsilun->type == TYPE_TAPE) { + bs->sg = 1; + } + return 0; failed: |