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Test LWB buffer overflow for block cloning #15672

Merged
merged 1 commit into from
Dec 15, 2023
Merged

Test LWB buffer overflow for block cloning #15672

merged 1 commit into from
Dec 15, 2023

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usaleem-ix
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Motivation and Context

#15634 removes 128K into 2x68K LWB split optimization, since it was found to cause LWB buffer overflow while trying to write 128KB TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer, with multiple VDEVs ZIL.

Description

This commit adds a test for this particular scenario by writing maximum sizes TX_CLONE_RANE record with 1022 block pointers into 68KB buffer, with two SLOG devices.

How Has This Been Tested?

Ran the test without #15634, and assert is being hit. With the patch, test passes successfully.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Performance enhancement (non-breaking change which improves efficiency)
  • Code cleanup (non-breaking change which makes code smaller or more readable)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Library ABI change (libzfs, libzfs_core, libnvpair, libuutil and libzfsbootenv)
  • Documentation (a change to man pages or other documentation)

Checklist:

ixhamza
ixhamza reviewed Dec 14, 2023
View reviewed changes
tests/zfs-tests/tests/functional/block_cloning/block_cloning_lwb_buffer_overflow.ksh
conv=fsync
sync_pool $TESTPOOL
log_must clonefile -c /testpool/testfs/file1 /testpool/testfs/file2
log_must sync
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It would be nice to compare the cloned file with the original file as well, i.e., by using have_same_content and get_same_blocks.

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Thanks, updated.

@usaleem-ix
Test LWB buffer overflow for block cloning
e89a946 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
@behlendorf behlendorf added Component: Test Suite Indicates an issue with the test framework or a test case Status: Accepted Ready to integrate (reviewed, tested) labels Dec 14, 2023
@behlendorf behlendorf merged commit dbda451 into openzfs:master Dec 15, 2023
25 of 26 checks passed
@usaleem-ix usaleem-ix deleted the NAS-125630 branch December 19, 2023 15:00
mmatuska pushed a commit to mmatuska/zfs that referenced this pull request Jan 17, 2024
@usaleem-ix @mmatuska
Test LWB buffer overflow for block cloning
6f7bffb 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes openzfs#15672
@mmatuska mmatuska mentioned this pull request Jan 17, 2024
Merged
13 tasks
mmatuska pushed a commit to mmatuska/zfs that referenced this pull request Jan 18, 2024
@usaleem-ix @mmatuska
Test LWB buffer overflow for block cloning
e31abbf 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes openzfs#15672
mmatuska pushed a commit to mmatuska/zfs that referenced this pull request Jan 18, 2024
@usaleem-ix @mmatuska
Test LWB buffer overflow for block cloning
9eda19c 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes openzfs#15672
behlendorf pushed a commit that referenced this pull request Jan 19, 2024
@usaleem-ix @behlendorf
Test LWB buffer overflow for block cloning
f94a779 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes #15672
lundman pushed a commit to openzfsonwindows/openzfs that referenced this pull request Mar 13, 2024
@usaleem-ix @lundman
Test LWB buffer overflow for block cloning
2d06241 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes openzfs#15672
lundman pushed a commit to openzfsonwindows/openzfs that referenced this pull request Mar 13, 2024
@usaleem-ix @lundman
Test LWB buffer overflow for block cloning
6cfa873 
PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes openzfs#15672
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@ixhamza ixhamza ixhamza approved these changes

@amotin amotin amotin approved these changes

@behlendorf behlendorf behlendorf approved these changes

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@usaleem-ix @behlendorf @amotin @ixhamza