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README

      1 TEST SUITE:
      2 
      3 The directory ext4-new-features contains the tests related to the ext4
      4 filesystem's new features.
      5 
      6 Ext4 is an advanced level of the ext3 filesystem which incorporates scalability
      7 and reliability enhancements for supporting large filesystems(64 bit) in keeping
      8 with increasing disk capacities and state-of-the-art feature requirements. More
      9 extensive information of ext4 can be found at the ext4 wiki site at the URL:
     10 http://ext4.wiki.kernel.org
     11 
     12 There are total 117 testcases for ext4 new features test that have been added.
     13 Now, these testcases can test multi-block alloc/delayed alloc, inode version
     14 field on disk, journal checksumming, nanosec timestamps, online defrag, persist
     15 prealloc, subdirectory limit and uninit groups of ext4.
     16 The detail information of ext4 new features can be found at the URL:
     17 http://ext4.wiki.kernel.org/index.php/New_ext4_features
     18 
     19 
     20 TESTS AIM:
     21 
     22 The aim of the tests is to test ext4 new features.
     23 
     24 
     25 TEST STEPS:
     26 # cd LTPROOT/testcases/kernel/fs/ext4-new-features
     27 # make
     28 # make install
     29 # cd LTPROOT
     30 # ./runltp -f fs_ext4 -z 'big unmounted block device partition'
     31 
     32 
     33 NOTE:
     34 
     35 1. This test can be run by root only.
     36 
     37 2. These tests need a big unmounted block device partition. You MUST run runltp
     38    with "-z" option to specify such a big block device, if not, these tests
     39    will exit with TCONF.
     40 
     41    Be CAREFUL the data on the specified partition would be DESTROYED.
     42 
     43    The recommended size of partition is between 5G and 10G. If the partition is
     44    too big, the test will run for a long time, which is unnecessary.
     45 
     46 3. Before starting test ext4 new features, please check whether ext4 filesystem
     47    is compiled into the kernel or not, and the kernel version is *2.6.31* or
     48    above.
     49 
     50 4. A snapshot of config file options is given below:
     51    ONFIG_EXT4_FS=y
     52    CONFIG_EXT4DEV_COMPAT=y
     53    CONFIG_EXT4_FS_XATTR=y
     54    CONFIG_EXT4_FS_POSIX_ACL=y
     55    CONFIG_EXT4_FS_SECURITY=y
     56 
     57 5. Beside that, the following packages are necessary:
     58    e2fsprogs
     59      (http://www.rpmfind.net/linux/rpm2html/search.php?query=e2fsprogs)
     60    e2fsprogs-devel
     61      (http://www.rpmfind.net/linux/rpm2html/search.php?query=e2fsprogs-devel)
     62    e2fsprogs-libs
     63      (http://www.rpmfind.net/linux/rpm2html/search.php?query=e2fsprogs-libs)
     64    and the version of these packages should be 1.41.4 or above, otherwise the
     65    test will fail.
     66 
     67 
     68 FILES DESCRIPTION:
     69 
     70 ext4-delalloc-mballoc
     71 ---------------------
     72 Directory containing the shell script which is used to test multi-block
     73 allocation and delayed allocation of ext4.
     74 
     75 ext4-ffsb-config
     76 ----------------
     77 Directory containing the config of ffsb for test.
     78 
     79 ext4-inode-version
     80 ------------------
     81 Directory containing the shell script which is used to test inode version field
     82 on disk of ext4.
     83 
     84 ext4-journal-checksum
     85 ---------------------
     86 Directory containing the shell script which is used to test journal checksumming
     87 of ext4.
     88 
     89 ext4-nsec-timestamps
     90 --------------------
     91 Directory containing the shell script which is used to test nanosec timestamps
     92 of ext4.
     93 
     94 ext4-online-defrag
     95 ------------------
     96 Directory containing the shell script which is used to test online defrag
     97 feature of ext4.
     98 
     99 ext4-persist-prealloc
    100 ---------------------
    101 Directory containing the shell script which is used to test persist prealloc
    102 feature of ext4.
    103 
    104 ext4-subdir-limit
    105 -----------------
    106 Directory containing the shell script which is used to test subdirectory limit
    107 of ext4. According to the kernel documentation, we create more than 32000
    108 subdirectorys on the ext4 filesystem.
    109 
    110 ext4-uninit-groups
    111 ------------------
    112 Directory containing the shell script which is used to test uninitialized groups
    113 feature of ext4.
    114 
    115 ext4_funcs.sh
    116 -------------
    117 This script contains some functions for ext4 new features test script.
    118 such as: ext4_setup, ext4_cleanup
    119 
    120 Makefile
    121 --------
    122 Each directory in this directory has its usual makefile, it is for its
    123 directory.
    124 
    125 README
    126 ------
    127 The one you have gone through.
    128