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-rw-r--r--src/gpt-auto-generator/gpt-auto-generator.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
index 33e1a20de6..fa56a8322d 100644
--- a/src/gpt-auto-generator/gpt-auto-generator.c
+++ b/src/gpt-auto-generator/gpt-auto-generator.c
@@ -53,7 +53,8 @@ static int open_parent_block_device(dev_t devnum, int *ret_fd) {
r = sd_device_new_from_devnum(&d, 'b', devnum);
if (r < 0)
- return log_debug_errno(r, "Failed to open device: %m");
+ return log_debug_errno(r, "Failed to create device object for block device "DEVNUM_FORMAT_STR": %m",
+ DEVNUM_FORMAT_VAL(devnum));
if (sd_device_get_devname(d, &name) < 0) {
r = sd_device_get_syspath(d, &name);