Re: AIO, DIO fsx tests failures on 2.6.19-rc1-mm1

[Chris Mason <chris.mason@oracle.com>]

On Tue, Oct 17, 2006 at 03:31:49PM -0700, Badari Pulavarty wrote:
> Okay. Finally tracked down the problem I am running into.
> This happens only on reiserfs
> 
> # /root/fsx-linux -N 10000 -o 128000 -r 2048 -w 4096 -Z -R -W
> jnk
> mapped writes DISABLED
> doread: read: Invalid argument
> Segmentation fault
> 
> Here is the strace for it
> ..
> ftruncate(3, 2721)                      = 0
> fstat(3, {st_mode=S_IFREG|0644, st_size=2721, ...}) = 0
> lseek(3, 0, SEEK_END)                   = 2721
> fstat(3, {st_mode=S_IFREG|0644, st_size=2721, ...}) = 0
> lseek(3, 0, SEEK_END)                   = 2721
> fstat(3, {st_mode=S_IFREG|0644, st_size=2721, ...}) = 0
> lseek(3, 0, SEEK_END)                   = 2721
> lseek(3, 0, SEEK_SET)                   = 0
> read(3, 0x50a800, 2048)                 = -1 EINVAL (Invalid argument)
> 
> reiserfs getblock() is returing -EINVAL. There is comment in the code
> about tail handling and returning EINVAL. BTW, this is not a -mm
> issue, it happens on mainline too...

Yes, reiserfs doesn't allow O_DIRECT on tails.  You'll have to mount -o
notail for this test.

-chris