From 67163cc86255bb93d524051e488de15172ab396c Mon Sep 17 00:00:00 2001 From: Coly Li Date: Sun, 23 Aug 2020 00:26:31 +0800 Subject: [PATCH 15/17] bcache-tools: make: permit only one cache device to be specified Git-commit: 67163cc86255bb93d524051e488de15172ab396c Patch-mainline: bcache-tools-1.1 References: jsc#SLE-9807 Now a cache set only has a single cache, therefore "bcache make" should permit only one cache device to be specified for a cache set. This patch checks if more than one cache devices are specified by "-C" an error message "Please specify only one cache device" will be printed and bcache exits with usage information. Signed-off-by: Coly Li --- make.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/make.c b/make.c index 9631857..ad89377 100644 --- a/make.c +++ b/make.c @@ -604,6 +604,11 @@ int make_bcache(int argc, char **argv) usage(); } + if (ncache_devices > 1) { + fprintf(stderr, "Please specify only one cache device\n"); + usage(); + } + if (bucket_size < block_size) { fprintf(stderr, "Bucket size cannot be smaller than block size\n"); -- 2.26.2