From 1f212b9d3edd8679bafd3bcf0301795206438724 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Thu, 9 Aug 2012 16:07:21 +0200 Subject: blockdev: flip default cache mode from writethrough to writeback Now all major device models (IDE, SCSI, virtio) can choose between writethrough and writeback at run-time, and virtio will even revert to writethrough if the guest is not capable of sending flushes. So we can change the default to writeback at last. Tested, for lack of a better idea, with a breakpoint on bdrv_open and all cache choices one by one. Signed-off-by: Paolo Bonzini Signed-off-by: Kevin Wolf --- blockdev.c | 1 + 1 file changed, 1 insertion(+) (limited to 'blockdev.c') diff --git a/blockdev.c b/blockdev.c index 8669142704..7c83baa353 100644 --- a/blockdev.c +++ b/blockdev.c @@ -377,6 +377,7 @@ DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi) } } + bdrv_flags |= BDRV_O_CACHE_WB; if ((buf = qemu_opt_get(opts, "cache")) != NULL) { if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { error_report("invalid cache option"); -- cgit v1.2.1