From 541b4e900d8e107abf072dece763a587a09dde0c Mon Sep 17 00:00:00 2001 From: "kfraser@localhost.localdomain" Date: Thu, 24 May 2007 10:50:07 +0100 Subject: [PATCH] blktap: Add one more error reason statement to blktapctrl blktapctrl already prints out exits reasons for all goto's to open_failed except of not finding a device number for blktap0 This patch adds just that message so the user will get more info than just "Unable to start blktapctrl" Common source of this issue is that blktap is missing/failed to load/... Signed-off-by: Christian Ehrhardt --- tools/blktap/drivers/blktapctrl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/blktap/drivers/blktapctrl.c b/tools/blktap/drivers/blktapctrl.c index 42b74b3c7a..a0b2f349d0 100644 --- a/tools/blktap/drivers/blktapctrl.c +++ b/tools/blktap/drivers/blktapctrl.c @@ -690,8 +690,10 @@ int main(int argc, char *argv[]) /* Attach to blktap0 */ asprintf(&devname,"%s/%s0", BLKTAP_DEV_DIR, BLKTAP_DEV_NAME); - if ((ret = xc_find_device_number("blktap0")) < 0) + if ((ret = xc_find_device_number("blktap0")) < 0) { + DPRINTF("couldn't find device number for 'blktap0'\n"); goto open_failed; + } blktap_major = major(ret); make_blktap_dev(devname,blktap_major,0); ctlfd = open(devname, O_RDWR); -- 2.30.2