1 Disable the DELALLOC feature because it is not robust in ext4 versions < 2.6.31.
4 diff -rupN linux-2.6.18-164.6.1_1/fs/ext4/super.c linux-2.6.18-164.6.1_2/fs/ext4/super.c
5 --- linux-2.6.18-164.6.1_1/fs/ext4/super.c 2010-08-05 13:44:07.000000000 +0530
6 +++ linux-2.6.18-164.6.1_2/fs/ext4/super.c 2010-08-05 13:46:29.000000000 +0530
7 @@ -2091,12 +2091,6 @@ static int ext4_fill_super(struct super_
9 set_opt(sbi->s_mount_opt, BARRIER);
12 - * enable delayed allocation by default
13 - * Use -o nodelalloc to turn it off
15 - set_opt(sbi->s_mount_opt, DELALLOC);
17 if (!parse_options((char *) data, sb, &journal_devnum,
18 &journal_ioprio, NULL, 0))