LU-8900 snapshot: simulate readonly device

[fs/lustre-release.git] / lustre / include / lustre_disk.h

diff --git a/lustre/include/lustre_disk.h b/lustre/include/lustre_disk.h
index 7e86ca0..2841f6a 100644 (file)
--- a/lustre/include/lustre_disk.h
+++ b/lustre/include/lustre_disk.h
@@ -259,6 +259,7 @@ struct lustre_mount_data {
 #define LMD_FLG_VIRGIN         0x1000  /* the service registers first time */
 #define LMD_FLG_UPDATE         0x2000  /* update parameters */
 #define LMD_FLG_HSM            0x4000  /* Start coordinator */
+#define LMD_FLG_DEV_RDONLY     0x8000  /* discard modification quitely */
 
 #define lmd_is_client(x) ((x)->lmd_flags & LMD_FLG_CLIENT)