Attached is debdiff. Important change is in grub-
core/osdep/unix/getroot.c, function
grub_util_find_root_devices_from_poolname
+--- a/grub-core/osdep/unix/getroot.c
++++ b/grub-core/osdep/unix/getroot.c
+@@ -305,8 +305,18 @@ grub_util_find_root_devices_from_poolnam
+ }
+ if (name[0] == '/')
+ devices[ndevices++] = xstrdup (name);
+- else
+- devices[ndevices++] = xasprintf ("/dev/%s", name);
++ else {
++ const char *middles[] = { "disk/by-id/", "disk/by-uuid/",
"disk/by-partuuid/", "disk/by-label/", "disk/by-partlabel/", "disk/by-path/",
"/", NULL };
++
++ for (const char **cursor = middles; *cursor != NULL; cursor++) {
++ char *proposed = xasprintf ("/dev/%s/%s", *cursor, name);
++ struct stat stt;
++ if (lstat (proposed, &stt) == 0) {
++ devices[ndevices++] = proposed;
++ break;
++ }
++ }
++ }
+ }
+ break;
+ }
** Attachment added: "xenial debdiff"
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1527727/+attachment/4537081/+files/diff
** Changed in: grub2 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1527727
Title:
grub-probe for zfs assumes all devices prefix with /dev, ignoring
/dev/disk/...
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