On Tue, 2020-04-14 at 08:07 -0400, Jeff Layton wrote:
> From: Jeff Layton <jlayton@xxxxxxxxxx>
>
> Add a test for new syncfs error reporting behavior. When an inode fails
> to be written back, ensure that a subsequent call to syncfs() will also
> report an error.
>
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
> tests/generic/999 | 98 +++++++++++++++++++++++++++++++++++++++++++
> tests/generic/999.out | 8 ++++
> tests/generic/group | 1 +
> 3 files changed, 107 insertions(+)
> create mode 100755 tests/generic/999
> create mode 100644 tests/generic/999.out
>
I should note that I sent this as an RFC as it will fail until this
series is merged:
Subject: [PATCH v4 RESEND 0/2] vfs: have syncfs() return error when there are writeback errors
...which I've just recently re-posted to linux-fsdevel, et. al.
> diff --git a/tests/generic/999 b/tests/generic/999
> new file mode 100755
> index 000000000000..7383ce24c8fd
> --- /dev/null
> +++ b/tests/generic/999
> @@ -0,0 +1,98 @@
> +#! /bin/bash
> +# FS QA Test No. 999
> +#
> +# Open a file and write to it and fsync. Then, flip the data device to throw
> +# errors, write to it again and do an fdatasync. Then open an O_RDONLY fd on
> +# the same file and call syncfs against it and ensure that an error is reported.
> +# Then call syncfs again and ensure that no error is reported. Finally, repeat
> +# the open and syncfs and ensure that there is no error reported.
> +#
> +#-----------------------------------------------------------------------
> +# Copyright (c) 2020, Jeff Layton <jlayton@xxxxxxxxxx>
> +#
> +# This program is free software; you can redistribute it and/or
> +# modify it under the terms of the GNU General Public License as
> +# published by the Free Software Foundation.
> +#
> +# This program is distributed in the hope that it would be useful,
> +# but WITHOUT ANY WARRANTY; without even the implied warranty of
> +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> +# GNU General Public License for more details.
> +#
> +# You should have received a copy of the GNU General Public License
> +# along with this program; if not, write the Free Software Foundation,
> +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
> +#-----------------------------------------------------------------------
> +
> +seq=`basename $0`
> +seqres=$RESULT_DIR/$seq
> +echo "QA output created by $seq"
> +
> +here=`pwd`
> +tmp=/tmp/$$
> +status=1 # failure is the default!
> +trap "_cleanup; exit \$status" 0 1 2 3 15
> +
> +_cleanup()
> +{
> + cd /
> + rm -f $tmp.*
> + _dmerror_cleanup
> +}
> +
> +# get standard environment, filters and checks
> +. ./common/rc
> +. ./common/filter
> +. ./common/dmerror
> +
> +# real QA test starts here
> +_supported_os Linux
> +_require_scratch_nocheck
> +# This test uses "dm" without taking into account the data could be on
> +# realtime subvolume, thus the test will fail with rtinherit=1
> +_require_no_rtinherit
> +_require_dm_target error
> +
> +rm -f $seqres.full
> +
> +echo "Format and mount"
> +_scratch_mkfs > $seqres.full 2>&1
> +_dmerror_init
> +_dmerror_mount
> +
> +datalen=65536
> +_require_fs_space $SCRATCH_MNT $datalen
> +
> +# use fd 5 to hold file open
> +testfile=$SCRATCH_MNT/syncfs-reports-errors
> +exec 5>$testfile
> +
> +# write some data to file and fsync it out
> +$XFS_IO_PROG -c "pwrite -W -q 0 $datalen" $testfile
> +
> +# flip device to non-working mode
> +_dmerror_load_error_table
> +
> +# rewrite the data, and do fdatasync
> +$XFS_IO_PROG -c "pwrite -w -q 0 $datalen" $testfile
> +
> +# heal the device error
> +_dmerror_load_working_table
> +
> +# open again and call syncfs twice
> +echo "One of the following syncfs calls should fail with EIO:"
> +$XFS_IO_PROG -r -c syncfs -c syncfs $testfile
> +echo "done"
> +
> +echo "This syncfs call should succeed:"
> +$XFS_IO_PROG -r -c syncfs $testfile
> +echo "done"
> +
> +# close file
> +exec 5>&-
> +
> +# success, all done
> +_dmerror_cleanup
> +
> +status=0
> +exit
> diff --git a/tests/generic/999.out b/tests/generic/999.out
> new file mode 100644
> index 000000000000..950a2ba42503
> --- /dev/null
> +++ b/tests/generic/999.out
> @@ -0,0 +1,8 @@
> +QA output created by 999
> +Format and mount
> +fdatasync: Input/output error
> +One of the following syncfs calls should fail with EIO:
> +syncfs: Input/output error
> +done
> +This syncfs call should succeed:
> +done
> diff --git a/tests/generic/group b/tests/generic/group
> index 99d06c9ad945..028cdbd0d52b 100644
> --- a/tests/generic/group
> +++ b/tests/generic/group
> @@ -598,3 +598,4 @@
> 594 auto quick quota
> 595 auto quick encrypt
> 596 auto quick
> +999 auto quick
--
Jeff Layton <jlayton@xxxxxxxxxx>
