| Message ID | 20230606110123.130226-1-wqu@suse.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] btrfs: add a test case to verify the scrub error reports | expand |
On Tue, Jun 6, 2023 at 12:05 PM Qu Wenruo <wqu@suse.com> wrote: > > There is a regression in recent v6.4 cycle where a scrub rewrite changed > how we report errors, especially repairable errors. > > Before the rewrite, we report the initial errors hit, and the amount of > repairable errors. > While after the rewrite, we no longer report the initial errors, but > only the number of repairable errors. > > This behavior change is a regression, thus needs a test case to prevent > such problem from happening again. > > The test case itself would: > > - Create a btrfs using DUP data profile and 4K sector size > > - Create a file with one 128K extent > > - Corrupt the first mirror of that 128K extent > > - Scrub and checks the detailed report > Both corrected errors and csum errors should be 32. > > Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Looks good, thanks. > --- > Changelog: > v2: > - Add _fixed_by_kernel_commit > - Remove the confusing comments on common/filter > - Use $AWK_PROG instead of calling awk directly > - Fix an error prompt which uses a copied string without updating > --- > tests/btrfs/289 | 69 +++++++++++++++++++++++++++++++++++++++++++++ > tests/btrfs/289.out | 2 ++ > 2 files changed, 71 insertions(+) > create mode 100755 tests/btrfs/289 > create mode 100644 tests/btrfs/289.out > > diff --git a/tests/btrfs/289 b/tests/btrfs/289 > new file mode 100755 > index 00000000..0d20109a > --- /dev/null > +++ b/tests/btrfs/289 > @@ -0,0 +1,69 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (C) 2023 SUSE Linux Products GmbH. All Rights Reserved. > +# > +# FS QA Test 289 > +# > +# Make sure btrfs-scrub reports errors correctly for repaired sectors. > +# > +. ./common/preamble > +_begin_fstest auto quick scrub repair > + > +. ./common/filter > + > +# real QA test starts here > + > +# Modify as appropriate. > +_supported_fs btrfs > +_require_scratch > + > +_require_odirect > +# Overwriting data is forbidden on a zoned block device > +_require_non_zoned_device "${SCRATCH_DEV}" > + > +# The errors reported would be in the unit of sector, thus the number > +# is dependent on the sectorsize. > +_require_btrfs_support_sectorsize 4096 > + > +_fixed_by_kernel_commit xxxxxxxxxxxx \ > + "btrfs: scrub: also report errors hit during the initial read" > + > +# Create a single btrfs with DUP data profile, and create one 128K file. > +_scratch_mkfs -s 4k -d dup -b 1G >> $seqres.full 2>&1 > +_scratch_mount > +$XFS_IO_PROG -f -d -c "pwrite -S 0xaa -b 128K 0 128K" "$SCRATCH_MNT/foobar" \ > + > /dev/null > +sync > + > +logical=$(_btrfs_get_first_logical "$SCRATCH_MNT/foobar") > + > +physical1=$(_btrfs_get_physical ${logical} 1) > +devpath1=$(_btrfs_get_device_path ${logical} 1) > +_scratch_unmount > + > +echo " corrupt stripe #1, devpath $devpath1 physical $physical1" \ > + >> $seqres.full > +$XFS_IO_PROG -d -c "pwrite -S 0xf1 -b 64K $physical1 128K" $devpath1 \ > + >> $seqres.full > + > +# Mount and do a scrub and compare the output > +_scratch_mount > +$BTRFS_UTIL_PROG scrub start -BR $SCRATCH_MNT >> $tmp.scrub_report 2>&1 > +cat $tmp.scrub_report >> $seqres.full > + > +# Csum errors should be 128K/4K = 32 > +csum_errors=$(grep "csum_errors" $tmp.scrub_report | $AWK_PROG '{print $2}') > +if [ $csum_errors -ne 32 ]; then > + echo "csum_errors incorrect, expect 32 has $csum_errors" > +fi > + > +# And all errors should be repaired, thus corrected errors should also be 32. > +corrected_errors=$(grep "corrected_errors" $tmp.scrub_report | $AWK_PROG '{print $2}') > +if [ $corrected_errors -ne 32 ]; then > + echo "corrected_errors incorrect, expect 32 has $corrected_errors" > +fi > + > +echo "Silence is golden" > + > +status=0 > +exit > diff --git a/tests/btrfs/289.out b/tests/btrfs/289.out > new file mode 100644 > index 00000000..7d3b7f80 > --- /dev/null > +++ b/tests/btrfs/289.out > @@ -0,0 +1,2 @@ > +QA output created by 289 > +Silence is golden > -- > 2.39.0 >
diff --git a/tests/btrfs/289 b/tests/btrfs/289 new file mode 100755 index 00000000..0d20109a --- /dev/null +++ b/tests/btrfs/289 @@ -0,0 +1,69 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (C) 2023 SUSE Linux Products GmbH. All Rights Reserved. +# +# FS QA Test 289 +# +# Make sure btrfs-scrub reports errors correctly for repaired sectors. +# +. ./common/preamble +_begin_fstest auto quick scrub repair + +. ./common/filter + +# real QA test starts here + +# Modify as appropriate. +_supported_fs btrfs +_require_scratch + +_require_odirect +# Overwriting data is forbidden on a zoned block device +_require_non_zoned_device "${SCRATCH_DEV}" + +# The errors reported would be in the unit of sector, thus the number +# is dependent on the sectorsize. +_require_btrfs_support_sectorsize 4096 + +_fixed_by_kernel_commit xxxxxxxxxxxx \ + "btrfs: scrub: also report errors hit during the initial read" + +# Create a single btrfs with DUP data profile, and create one 128K file. +_scratch_mkfs -s 4k -d dup -b 1G >> $seqres.full 2>&1 +_scratch_mount +$XFS_IO_PROG -f -d -c "pwrite -S 0xaa -b 128K 0 128K" "$SCRATCH_MNT/foobar" \ + > /dev/null +sync + +logical=$(_btrfs_get_first_logical "$SCRATCH_MNT/foobar") + +physical1=$(_btrfs_get_physical ${logical} 1) +devpath1=$(_btrfs_get_device_path ${logical} 1) +_scratch_unmount + +echo " corrupt stripe #1, devpath $devpath1 physical $physical1" \ + >> $seqres.full +$XFS_IO_PROG -d -c "pwrite -S 0xf1 -b 64K $physical1 128K" $devpath1 \ + >> $seqres.full + +# Mount and do a scrub and compare the output +_scratch_mount +$BTRFS_UTIL_PROG scrub start -BR $SCRATCH_MNT >> $tmp.scrub_report 2>&1 +cat $tmp.scrub_report >> $seqres.full + +# Csum errors should be 128K/4K = 32 +csum_errors=$(grep "csum_errors" $tmp.scrub_report | $AWK_PROG '{print $2}') +if [ $csum_errors -ne 32 ]; then + echo "csum_errors incorrect, expect 32 has $csum_errors" +fi + +# And all errors should be repaired, thus corrected errors should also be 32. +corrected_errors=$(grep "corrected_errors" $tmp.scrub_report | $AWK_PROG '{print $2}') +if [ $corrected_errors -ne 32 ]; then + echo "corrected_errors incorrect, expect 32 has $corrected_errors" +fi + +echo "Silence is golden" + +status=0 +exit diff --git a/tests/btrfs/289.out b/tests/btrfs/289.out new file mode 100644 index 00000000..7d3b7f80 --- /dev/null +++ b/tests/btrfs/289.out @@ -0,0 +1,2 @@ +QA output created by 289 +Silence is golden
There is a regression in recent v6.4 cycle where a scrub rewrite changed how we report errors, especially repairable errors. Before the rewrite, we report the initial errors hit, and the amount of repairable errors. While after the rewrite, we no longer report the initial errors, but only the number of repairable errors. This behavior change is a regression, thus needs a test case to prevent such problem from happening again. The test case itself would: - Create a btrfs using DUP data profile and 4K sector size - Create a file with one 128K extent - Corrupt the first mirror of that 128K extent - Scrub and checks the detailed report Both corrected errors and csum errors should be 32. Signed-off-by: Qu Wenruo <wqu@suse.com> --- Changelog: v2: - Add _fixed_by_kernel_commit - Remove the confusing comments on common/filter - Use $AWK_PROG instead of calling awk directly - Fix an error prompt which uses a copied string without updating --- tests/btrfs/289 | 69 +++++++++++++++++++++++++++++++++++++++++++++ tests/btrfs/289.out | 2 ++ 2 files changed, 71 insertions(+) create mode 100755 tests/btrfs/289 create mode 100644 tests/btrfs/289.out