On Wed, 15 Oct 2014, Sven Joachim wrote:
I don't think there is actually an I/O error here, looking at the code
systemd-gpt-auto-generator makes this error up:
,----
| errno = 0;
| r = blkid_probe_lookup_value(b, "PTTYPE", &pttype, NULL);
| if (r != 0) {
| if (errno == 0)
| errno = EIO;
| log_error("Failed to determine partition table type of %s: %m", node);
| return -errno;
`----
Somebody who is familiar with libblkid (i.e. not me) might explain why
blkid_probe_lookup_value() apparently failed but did not set errno.
Great catch. Yeah, blkid_probe_lookup_value apparently just returns -1
on all errors, regardless of what the error was.
This is probably a bug in systemd-gpt-auto-generator, but upstream (and
the maintainer) would know much more than I.