block: expect get_block_status errors in bdrv_make_zero
during testing around with 4k LUNs a bad target implementation
triggert an -EIO in iscsi_get_block_status, but it got never caught
resulting in an infinite loop.
CC: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/block.c b/block.c
index 13f001a..64e7d22 100644
--- a/block.c
+++ b/block.c
@@ -2421,6 +2421,11 @@
nb_sectors = INT_MAX;
}
ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &n);
+ if (ret < 0) {
+ error_report("error getting block status at sector %" PRId64 ": %s",
+ sector_num, strerror(-ret));
+ return ret;
+ }
if (ret & BDRV_BLOCK_ZERO) {
sector_num += n;
continue;
