Re: [LTP] [PATCH 1/1] aiocp.c: TCONF on O_DIRECT on tmpfs

[Petr Vorel <pvorel@suse.cz>]

> Hi!
> > > hm, it looks like it requires to skip tmpfs, as all tests TCONF:
> > > aiocp.c:231: TINFO: Maximum AIO blocks: 65536
> > > tst_device.c:541: TINFO: Use BTRFS specific strategy
> > > tst_device.c:559: TBROK: BTRFS ioctl failed. Is . on a tmpfs?: ENOTTY (25)

> > > I check if it'd work without
> > > e1b1ae66b2 ("tst_find_backing_dev: Get dev name from /sys/dev/block/*/uevent")

> > TMPDIR=/home/foo ./aiocp -b 1k -n 1 -f DIRECT # xfs
> > tst_test.c:1558: TINFO: Timeout per run is 0h 30m 30s
> > tst_test.c:1310: TINFO: xfs is supported by the test
> > aiocp.c:231: TINFO: Maximum AIO blocks: 65536
> > tst_device.c:585: TINFO: Use uevent strategy
> > aiocp.c:267: TINFO: Fill srcfile.bin with random data
> > aiocp.c:84: TBROK: write(3,0x7ffeccb9da00,60274) failed: EINVAL (22)

> > TMPDIR=/var/tmp ./aiocp -b 1k -n 1 -f DIRECT # ext4
> > tst_test.c:1558: TINFO: Timeout per run is 0h 30m 30s
> > tst_test.c:1310: TINFO: ext2/ext3/ext4 is supported by the test
> > aiocp.c:231: TINFO: Maximum AIO blocks: 65536
> > tst_device.c:585: TINFO: Use uevent strategy
> > aiocp.c:267: TINFO: Fill srcfile.bin with random data
> > aiocp.c:84: TBROK: write(3,0x7ffda9e14120,50530) failed: EINVAL (22)

> Ah, I suppose that this fails because we are wrongly passing the
> srcflags to the open() that fills the source file with random data and
> we end up passing O_DIRECT to the function that does not aling the
> buffers and sizes at all.

> Does this fix it?

Hi Cyril,

unfortunately the output is the same on all 3 tested filesystems.
Any other hint what could fix it?

Kind regards,
Petr

> diff --git a/testcases/kernel/io/ltp-aiodio/aiocp.c b/testcases/kernel/io/ltp-aiodio/aiocp.c
> index ee893ab11..a75da6a0c 100644
> --- a/testcases/kernel/io/ltp-aiodio/aiocp.c
> +++ b/testcases/kernel/io/ltp-aiodio/aiocp.c
> @@ -263,7 +263,7 @@ static void setup(void)

>         tst_res(TINFO, "Fill %s with random data", srcname);

> -       srcfd = SAFE_OPEN(srcname, srcflags | O_RDWR | O_CREAT, 0666);
> +       srcfd = SAFE_OPEN(srcname, O_WRONLY | O_CREAT, 0666);
>         fill_with_rand_data(srcfd, filesize);
>         SAFE_CLOSE(srcfd);
>  }

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