Device ID numbers always start at 1, not at 0. The first IOC_DEV_INFO
call does not make sense, since it will always return ENODEV.
ioctl(3, BTRFS_IOC_DEV_INFO, {devid=0}) = -1 ENODEV (No such device)
Signed-off-by: Hans van Kranenburg <hans.van.kranenburg@xxxxxxxxxx>
---
cmds-fi-usage.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmds-fi-usage.c b/cmds-fi-usage.c
index 101a0c4..52c4c62 100644
--- a/cmds-fi-usage.c
+++ b/cmds-fi-usage.c
@@ -535,7 +535,7 @@ static int load_device_info(int fd, struct device_info **device_info_ptr,
return 1;
}
- for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
+ for (i = 1, ndevs = 0 ; i <= fi_args.max_id ; i++) {
if (ndevs >= fi_args.num_devices) {
error("unexpected number of devices: %d >= %llu", ndevs,
(unsigned long long)fi_args.num_devices);
--
2.11.0
--
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