diff -ruN upload/fs/ext3/inode.c l1/linux-2.6.17/fs/ext3/inode.c
--- upload/fs/ext3/inode.c	2006-08-24 00:16:33 +0300
+++ linux-2.6.17/fs/ext3/inode.c	2006-09-06 16:22:17 +0300
@@ -2576,6 +2576,17 @@
 		inode->i_flags |= S_DIRSYNC;
 }
 
+void ext3_check_uuid_inode(struct ext3_inode *rinode, struct inode *vinode) 
+{
+  struct ext3_sb_info* sbi = (struct ext3_sb_info*)(vinode->i_sb)->s_fs_info;
+  int length = sizeof(u8)*16;
+
+  if(memcmp(rinode->i_uuid,sbi->s_uuid, length)) {
+    memset(rinode,0,sizeof(struct ext3_inode));
+    memcpy(rinode->i_uuid,sbi->s_uuid, length);
+  }
+}
+
 void ext3_read_inode(struct inode * inode)
 {
 	struct ext3_iloc iloc;
@@ -2594,6 +2605,9 @@
 		goto bad_inode;
 	bh = iloc.bh;
 	raw_inode = ext3_raw_inode(&iloc);
+	
+	ext3_check_uuid_inode(raw_inode,inode);
+
 	inode->i_mode = le16_to_cpu(raw_inode->i_mode);
 	inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
 	inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
@@ -2713,6 +2727,8 @@
 	return;
 }
 
+
+
 /*
  * Post the struct inode info into an on-disk inode location in the
  * buffer-cache.  This gobbles the caller's reference to the
@@ -2725,6 +2741,7 @@
 				struct ext3_iloc *iloc)
 {
 	struct ext3_inode *raw_inode = ext3_raw_inode(iloc);
+	struct ext3_sb_info* sbi = (struct ext3_sb_info*)(inode->i_sb)->s_fs_info;
 	struct ext3_inode_info *ei = EXT3_I(inode);
 	struct buffer_head *bh = iloc->bh;
 	int err = 0, rc, block;
@@ -2773,6 +2790,8 @@
 	raw_inode->i_fsize = ei->i_frag_size;
 #endif
 	raw_inode->i_file_acl = cpu_to_le32(ei->i_file_acl);
+	memcpy(raw_inode->i_uuid, sbi->s_uuid, sizeof(u8)*16);
+
 	if (!S_ISREG(inode->i_mode)) {
 		raw_inode->i_dir_acl = cpu_to_le32(ei->i_dir_acl);
 	} else {
@@ -2832,7 +2851,7 @@
 }
 
 /*
- * ext3_write_inode()
+ * ext3_write_inode
  *
  * We are called from a few places:
  *
diff -ruN upload/fs/ext3/super.c l1/linux-2.6.17/fs/ext3/super.c
--- upload/fs/ext3/super.c	2006-08-24 00:16:33 +0300
+++ linux-2.6.17/fs/ext3/super.c	2006-09-06 16:03:25 +0300
@@ -1464,6 +1425,8 @@
 	sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
 	sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
 
+	memcpy(sbi->s_uuid,es->s_uuid, sizeof(u8)*16);
+
 	set_opt(sbi->s_mount_opt, RESERVATION);
 
 	if (!parse_options ((char *) data, sb, &journal_inum, &journal_devnum,
diff -ruN upload/include/linux/ext3_fs.h l1/linux-2.6.17/include/linux/ext3_fs.h
--- upload/include/linux/ext3_fs.h	2006-08-24 00:16:33 +0300
+++ l1/linux-2.6.17/include/linux/ext3_fs.h	2006-09-06 16:20:53 +0300
@@ -284,6 +284,7 @@
 	__le32	i_file_acl;	/* File ACL */
 	__le32	i_dir_acl;	/* Directory ACL */
 	__le32	i_faddr;	/* Fragment address */
+        __le16   i_uuid[8];
 	union {
 		struct {
 			__u8	l_i_frag;	/* Fragment number */
@@ -531,7 +532,7 @@
 #define EXT3_CURRENT_REV	EXT3_GOOD_OLD_REV
 #define EXT3_MAX_SUPP_REV	EXT3_DYNAMIC_REV
 
-#define EXT3_GOOD_OLD_INODE_SIZE 128
+#define EXT3_GOOD_OLD_INODE_SIZE (128+(8*16))
 
 /*
  * Feature set definitions
diff -ruN upload/include/linux/ext3_fs_sb.h l1/linux-2.6.17/include/linux/ext3_fs_sb.h
--- upload/include/linux/ext3_fs_sb.h	2006-08-24 00:16:33 +0300
+++ l1/linux-2.6.17/include/linux/ext3_fs_sb.h	2006-09-06 15:59:35 +0300
@@ -78,6 +78,7 @@
 	char *s_qf_names[MAXQUOTAS];		/* Names of quota files with journalled quota */
 	int s_jquota_fmt;			/* Format of quota to use */
 #endif
+        u8 s_uuid[16]; 
 };
 
 #endif	/* _LINUX_EXT3_FS_SB */