case NO.263 execute failure in xfstests-dev

case NO.263 execute failure in xfstests-dev

[宋仁春]

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Hi:

    When testing case 263 in xfstests, it always fails.
    It seems a bug of mmap in some case, and i do not know
    how to solve it. Can you help me?

    I get the error message as following:
    FSTYP -- xfs (non-debug)
    PLATFORM -- Linux/x86_64 RHEL6U2Beta-Intel64-150 2.6.32-202.el6.x86_64
    MKFS_OPTIONS -- -f -bsize=4096 /dev/sda12
    MOUNT_OPTIONS -- /dev/sda12 /sda12

    263 [failed, exit status 1] - output mismatch (see 263.out.bad)
    --- 263.out 2011-10-14 21:42:00.000000000 +0800
    +++ 263.out.bad 2011-12-05 13:30:18.430034551 +0800
    @@ -1,3 +1,1017 @@
    QA output created by 263
    fsx -N 10000 -o 8192 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z
    fsx -N 10000 -o 128000 -l 500000 -r PSIZE -t BSIZE -w BSIZE -Z
    ...
    +7963( 27 mod 256): READ 0x61000 thru 0x64fff (0x4000 bytes)
    +7964( 28 mod 256): MAPREAD 0x6000 thru 0xe5fe (0x85ff bytes)
    +7965( 29 mod 256): WRITE 0x6ca00 thru 0x79dff (0xd400 bytes) HOLE
    +7966( 30 mod 256): MAPREAD 0x78000 thru 0x7921f (0x1220 bytes)
    +Correct content saved for comparison
    +(maybe hexdump "/sda11/junk" vs "/sda11/junk.fsxgood")
    Ran: 263
    Failures: 263
    Failed 1 of 1 tests

    See the attachment for details.
    #tar tvf 263.tgz
    -rw-r--r-- root/root 62036 2011-12-05 14:05 263.full
    -rw-r--r-- root/root 62185 2011-12-05 14:05 263.out.bad
    -rw-r--r-- root/root 499200 2011-12-05 14:12 junk
    -rw-r--r-- root/root 499200 2011-12-05 14:12 junk.fsxgood
    -rw-r--r-- root/root 61735 2011-12-05 14:12 junk.fsxlog


-- 
Best Regards,
Song Renchun


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Re: case NO.263 execute failure in xfstests-dev

[Christoph Hellwig]

On Mon, Dec 05, 2011 at 02:20:37PM +0800, ?????? wrote:
> Hi:
> 
>     When testing case 263 in xfstests, it always fails.
>     It seems a bug of mmap in some case, and i do not know
>     how to solve it. Can you help me?

Yes, there seems to be an issue with mmap vs O_DIRECT coherency.  I have
not looked into it in detail yet, 263 was just split from the rest of the
fsx tests to isolate this test.

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