From fefee85da055e100ea86d15274106f78502c2819 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 24 Sep 2020 17:26:55 +0200 Subject: nbd: Add writethrough to block-export-add qemu-nbd allows use of writethrough cache modes, which mean that write requests made through NBD will cause a flush before they complete. Expose the same functionality in block-export-add. Signed-off-by: Kevin Wolf Reviewed-by: Max Reitz Message-Id: <20200924152717.287415-10-kwolf@redhat.com> Acked-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- blockdev-nbd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'blockdev-nbd.c') diff --git a/blockdev-nbd.c b/blockdev-nbd.c index 41d5542987..09247a8ded 100644 --- a/blockdev-nbd.c +++ b/blockdev-nbd.c @@ -216,9 +216,13 @@ BlockExport *nbd_export_create(BlockExportOptions *exp_args, Error **errp) goto out; } + if (!exp_args->has_writethrough) { + exp_args->writethrough = false; + } + exp = nbd_export_new(bs, arg->name, arg->description, arg->bitmap, !arg->writable, !arg->writable, - NULL, false, errp); + NULL, exp_args->writethrough, errp); if (!exp) { goto out; } -- cgit v1.2.3