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Write new UUID to JFS before testing reading UUID (!49) 

Testing reading the UUID from a newly created JFS was failing like this:

    $ ./test_SupportedFileSystems --gtest_filter='*ReadUUID/jfs'
...
    [ RUN      ] My/SupportedFileSystemsTest.CreateAndReadUUID/jfs
    test_SupportedFileSystems.cc:552: Failure
    Expected: (m_partition.uuid.size()) >= (9U), actual: 0 vs 9
    [  FAILED  ] My/SupportedFileSystemsTest.CreateAndReadUUID/jfs, where GetParam() = 17 (57 ms)

Mkfs.jfs creates a file system as version 1.  It does have a UUID and
blkid can report it, but jfs_tune doesn't report it.

    $ touch -s 256M test_jfs.img
    $ mkfs.jfs -q test_jfs.img
    mkfs.jfs version 1.1.15, 04-Mar-2011

    Format completed successfully.

    262144 kilobytes total disk space.
    $ blkid test_jfs.img
    test_jfs.img: UUID="6b0bb46a-a240-47b4-89ab-1fe759aa572d" TYPE="jfs"

    $ jfs_tune -l test_jfs.img | egrep 'version|UUID'
    jfs_tune version 1.1.15, 04-Mar-2011
    JFS version:		1

    $ hexdump -C test_jfs.img
    00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    *
    00008000  4a 46 53 31 01 00 00 00  58 f6 07 00 00 00 00 00  |JFS1....X.......|
Version >---------------- ^^ ^^ ^^ ^^
...
    00008080  00 00 00 00 00 00 00 00  6b 0b b4 6a a2 40 47 b4  |........k..j.@G.|
    00008090  89 ab 1f e7 59 aa 57 2d  00 00 00 00 00 00 00 00  |....Y.W-........|
UUID >-------------------------------- ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^
              ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^

However writing a new UUID to the JFS also updates the version to 2 and
allows jfs_tune to report the UUID.

    $ jfs_tune -U random test_jfs.img
    jfs_tune version 1.1.15, 04-Mar-2011
    UUID updated successfully.

    $ blkid test_jfs.img
    test_jfs.img: UUID="6374ec58-3568-4ffb-bea9-ff76bf5c192f" TYPE="jfs"

    $ jfs_tune -l test_jfs.img | egrep 'version|UUID'
    jfs_tune version 1.1.15, 04-Mar-2011
    JFS version:            2
    File system UUID:       6374ec58-3568-4ffb-bea9-ff76bf5c192f
    External log UUID:      00000000-0000-0000-0000-000000000000

    $ hexdump -C test_jfs.img
    00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    *
    00008000  4a 46 53 31 02 00 00 00  58 f6 07 00 00 00 00 00  |JFS1....X.......|
Version >---------------- ^^ ^^ ^^ ^^
...
    00008080  00 00 00 00 00 00 00 00  63 74 ec 58 35 68 4f fb  |........ct.X5hO.|
    00008090  be a9 ff 76 bf 5c 19 2f  00 00 00 00 00 00 00 00  |...v.\./........|
New UUID >---------------------------- ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^
              ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^

Therefore change the CreateAndReadUUID test for JFS to also write a new
UUID so that it also updates the version to 2, thus allowing jfs_tune to
report the UUID and the test pass.

Note that GParted doesn't encounter this problem because it used blkid
by default to report the UUID and only falls back to using the file
system interface method which calls jfs_tune when blkid is not
available.

Closes !49 - Add file system interface tests
This commit is contained in:
Mike Fleetwood 2019-09-03 07:37:52 +01:00 committed by Curtis Gedak
parent c60f2e43a3
commit 19ed25d774
1 changed files with 8 additions and 0 deletions
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8
tests/test_SupportedFileSystems.cc
View File

@ -546,6 +546,14 @@ TEST_P(SupportedFileSystemsTest, CreateAndReadUUID)
extra_setup();
ASSERT_TRUE(m_fs_object->create(m_partition, m_operation_detail)) << m_operation_detail;
if (m_fstype == FS_JFS)
{
// Write a new UUID to cause the jfs version to be updated from 1 to 2 so
// that jfs_tune can successfully report the UUID of the file system.
SKIP_IF_FS_DOESNT_SUPPORT(write_uuid);
ASSERT_TRUE(m_fs_object->write_uuid(m_partition, m_operation_detail)) << m_operation_detail;
}
// Test reading the UUID is successful.
reload_partition();
m_fs_object->read_uuid(m_partition);