| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0+ |
| # Copyright (c) 2020, Jeff Layton. All rights reserved. |
| # FS QA Test No. 484 |
| # |
| # 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. |
| # |
| # Kernel with the following patches should pass the test: |
| # |
| # vfs: track per-sb writeback errors and report them to syncfs |
| # buffer: record blockdev write errors in super_block that it backs |
| |
| . ./common/preamble |
| _begin_fstest auto quick |
| |
| # Override the default cleanup function. |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| _dmerror_cleanup |
| } |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/dmerror |
| |
| # real QA test starts here |
| _require_scratch_nocheck |
| _require_dm_target error |
| _require_xfs_io_command "syncfs" |
| |
| # Disable the scratch rt device to avoid test failures relating to the rt |
| # bitmap consuming all the free space in our small data device. |
| unset SCRATCH_RTDEV |
| |
| echo "Format and mount" |
| _scratch_mkfs > $seqres.full 2>&1 |
| _dmerror_init |
| _dmerror_mount |
| |
| # create file |
| testfile=$SCRATCH_MNT/syncfs-reports-errors |
| touch $testfile |
| |
| # write a page of data to file, and call fsync |
| datalen=$(getconf PAGE_SIZE) |
| $XFS_IO_PROG -c "pwrite -W -q 0 $datalen" $testfile |
| |
| # flip device to non-working mode |
| _dmerror_load_error_table |
| |
| # rewrite the data and call 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" |
| |
| # success, all done |
| _dmerror_cleanup |
| |
| status=0 |
| exit |