2020-04-30 07:59:02 -04:00
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#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2020, Jeff Layton. All rights reserved.
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# FS QA Test No. 484
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#
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# Open a file and write to it and fsync. Then, flip the data device to throw
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# errors, write to it again and do an fdatasync. Then open an O_RDONLY fd on
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# the same file and call syncfs against it and ensure that an error is reported.
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# Then call syncfs again and ensure that no error is reported. Finally, repeat
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# the open and syncfs and ensure that there is no error reported.
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#
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# Kernel with the following patches should pass the test:
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#
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# vfs: track per-sb writeback errors and report them to syncfs
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# buffer: record blockdev write errors in super_block that it backs
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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_dmerror_cleanup
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/dmerror
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# real QA test starts here
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_supported_os Linux
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_require_scratch_nocheck
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# This test uses "dm" without taking into account the data could be on
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# realtime subvolume, thus the test will fail with rtinherit=1
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_require_no_rtinherit
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_require_dm_target error
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2020-05-28 15:32:59 +08:00
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_require_xfs_io_command "syncfs"
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2020-04-30 07:59:02 -04:00
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rm -f $seqres.full
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echo "Format and mount"
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_scratch_mkfs > $seqres.full 2>&1
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_dmerror_init
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_dmerror_mount
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# create file
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testfile=$SCRATCH_MNT/syncfs-reports-errors
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touch $testfile
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# write a page of data to file, and call fsync
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datalen=$(getconf PAGE_SIZE)
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$XFS_IO_PROG -c "pwrite -W -q 0 $datalen" $testfile
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# flip device to non-working mode
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_dmerror_load_error_table
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# rewrite the data and call fdatasync
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$XFS_IO_PROG -c "pwrite -w -q 0 $datalen" $testfile
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# heal the device error
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_dmerror_load_working_table
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# open again and call syncfs twice
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echo "One of the following syncfs calls should fail with EIO:"
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$XFS_IO_PROG -r -c syncfs -c syncfs $testfile
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echo "done"
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echo "This syncfs call should succeed:"
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$XFS_IO_PROG -r -c syncfs $testfile
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echo "done"
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# success, all done
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_dmerror_cleanup
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status=0
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exit
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