search for: raw_uuid

By passing root=UUID=... to supermin, we make the appliance boot process less sensitive to the non-deterministic process of scanning SCSI disks (of which much more to come). This patch should be tested alongside the supermin patch posted here: https://www.redhat.com/archives/libguestfs/2017-April/msg00174.html which in turn requires this supermin patch series:

...clude <limits.h> #include <unistd.h> @@ -89,6 +90,11 @@ static void read_cmdline (void); static void insmod (const char *filename); static void delete_initramfs_files (void); static void show_directory (const char *dir); +static void parse_root_uuid (const char *uuid, unsigned char *raw_uuid); +static int hexdigit (char d); +static int find_fs_uuid (const unsigned char *raw_uuid, int *major, int *minor); +static int parse_dev_file (const char *path, int *major, int *minor); +static void virtio_warning (uint64_t delay_ns, const char *what); static char cmdline[1024]; static char lin...

v1 -> v2: - I fixed the end condition of the loop in parse_root_uuid. - Retested. Didn't change the busy wait loop into a function or macro, as per discussion on IRC. Rich.