disk/lvm: Add support for cachevol LV

Mark cachevol LV's as ignored features, which is true only if they are
configured as "writethrough". This patch does not let GRUB boot from
"writeback" cache-enabled LV's.

Signed-off-by: Patrick Plenefisch <simonpatp@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
index 14839a65b84f741e860e23481a17dd39ca377159..1f8e5d76d9527205e4b1152d2603b4050c1de4d1 100644 (file)
--- a/grub-core/disk/lvm.c
+++ b/grub-core/disk/lvm.c
@@ -822,6 +822,7 @@ grub_lvm_detect (grub_disk_t disk,
                   * we can ignore for our read-only access.
                   */
                  else if (grub_strncmp (p, "cache\"", sizeof ("cache\"") - 1) == 0 ||
+                          grub_strncmp (p, "cache+CACHE_USES_CACHEVOL\"", sizeof ("cache+CACHE_USES_CACHEVOL\"") - 1) == 0 ||
                           grub_strncmp (p, "integrity\"", sizeof ("integrity\"") - 1) == 0)
                    {
                      struct ignored_feature_lv *ignored_feature = NULL;