From 396759ad4ad5289623eb7e1993c433ad4e7b13a1 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 17 May 2010 09:46:04 -0700 Subject: [PATCH] block: Add SG_IO device check in refresh_total_sectors() This patch adds a special case check for scsi-generic devices in refresh_total_sectors() to skip the subsequent BlockDriver->bdrv_getlength() that will be returning -ESPIPE from block/raw-posic.c:raw_getlength() for BlockDriverState->sg=1 devices. Signed-off-by: Nicholas A. Bellinger Signed-off-by: Kevin Wolf --- block.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block.c b/block.c index 6a95768e81..0b0966c571 100644 --- a/block.c +++ b/block.c @@ -361,6 +361,10 @@ static int refresh_total_sectors(BlockDriverState *bs, int64_t hint) { BlockDriver *drv = bs->drv; + /* Do not attempt drv->bdrv_getlength() on scsi-generic devices */ + if (bs->sg) + return 0; + /* query actual device if possible, otherwise just trust the hint */ if (drv->bdrv_getlength) { int64_t length = drv->bdrv_getlength(bs); -- 2.11.0