diff mbox series

[v2,1/2] f2fs/006: add testcase to check out-of-space case

Message ID 20241023081602.3806579-1-chao@kernel.org (mailing list archive)
State New
Headers show
Series [v2,1/2] f2fs/006: add testcase to check out-of-space case | expand

Commit Message

Chao Yu Oct. 23, 2024, 8:16 a.m. UTC 
This is a regression test to check whether f2fs handles dirty
data correctly when checkpoint is disabled, if lfs mode is on,
it will trigger OPU for all overwritten data, this will cost
free segments, so f2fs must account overwritten data as OPU
data when calculating free space, otherwise, it may run out
of free segments in f2fs' allocation function, resulting in
panic.

Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Chao Yu <chao@kernel.org>
---
v2:
- add _fixed_by_kernel_commit()
- use _scratch_mkfs_sized() rather than formating size-specified
loop device
- code cleanup
 tests/f2fs/006     | 38 ++++++++++++++++++++++++++++++++++++++
 tests/f2fs/006.out |  6 ++++++
 2 files changed, 44 insertions(+)
 create mode 100755 tests/f2fs/006
 create mode 100644 tests/f2fs/006.out

Comments

Zorro Lang Oct. 25, 2024, 3:44 a.m. UTC | #1 
On Wed, Oct 23, 2024 at 04:16:01PM +0800, Chao Yu wrote:
> This is a regression test to check whether f2fs handles dirty
> data correctly when checkpoint is disabled, if lfs mode is on,
> it will trigger OPU for all overwritten data, this will cost
> free segments, so f2fs must account overwritten data as OPU
> data when calculating free space, otherwise, it may run out
> of free segments in f2fs' allocation function, resulting in
> panic.
> 
> Cc: Jaegeuk Kim <jaegeuk@kernel.org>
> Signed-off-by: Chao Yu <chao@kernel.org>
> ---
> v2:
> - add _fixed_by_kernel_commit()
> - use _scratch_mkfs_sized() rather than formating size-specified
> loop device
> - code cleanup
>  tests/f2fs/006     | 38 ++++++++++++++++++++++++++++++++++++++
>  tests/f2fs/006.out |  6 ++++++
>  2 files changed, 44 insertions(+)
>  create mode 100755 tests/f2fs/006
>  create mode 100644 tests/f2fs/006.out
> 
> diff --git a/tests/f2fs/006 b/tests/f2fs/006
> new file mode 100755
> index 00000000..63d00018
> --- /dev/null
> +++ b/tests/f2fs/006
> @@ -0,0 +1,38 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2024 Oppo.  All Rights Reserved.
> +#
> +# FS QA Test No. f2fs/006
> +#
> +# This is a regression test to check whether f2fs handles dirty
> +# data correctly when checkpoint is disabled, if lfs mode is on,
> +# it will trigger OPU for all overwritten data, this will cost
> +# free segments, so f2fs must account overwritten data as OPU
> +# data when calculating free space, otherwise, it may run out
> +# of free segments in f2fs' allocation function, resulting in
> +# panic.
> +#
> +. ./common/preamble
> +_begin_fstest auto quick
> +
> +_fixed_by_kernel_commit xxxxxxxxxxxx \
> +	"f2fs: fix to account dirty data in __get_secs_required()"
> +
> +testfile=$SCRATCH_MNT/testfile
> +
> +_require_scratch
> +_scratch_mkfs_sized $((1024*1024*100)) >> $seqres.full
> +
> +# use mode=lfs to let f2fs always triggers OPU
> +_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
> +
> +dd if=/dev/zero of=$testfile bs=1M count=50 2>/dev/null
> +
> +# it may run out of free space of f2fs and hang kernel
> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync

What kind of failure should be printed at here if test on unfixed kernel?
I got:

# diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad|less
--- /root/git/xfstests/tests/f2fs/006.out       2024-10-25 11:33:54.693883281 +0800
+++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-25 11:34:55.907252401 +0800
@@ -1,6 +1,6 @@
 QA output created by 006
 50+0 records in
 50+0 records out
-dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
-3+0 records in
-2+0 records out
+dd: fsync failed for '/mnt/scratch/testfile': Input/output error
+50+0 records in
+50+0 records out

Does that mean the bug is reproduced?

> +
> +_scratch_remount checkpoint=enable
> +
> +status=0
> +exit
> diff --git a/tests/f2fs/006.out b/tests/f2fs/006.out
> new file mode 100644
> index 00000000..0d7b3910
> --- /dev/null
> +++ b/tests/f2fs/006.out
> @@ -0,0 +1,6 @@
> +QA output created by 006
> +50+0 records in
> +50+0 records out
> +dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device

The "/mnt/scratch_f2fs" should be SCRATCH_MNT, please use _filter_scratch()
by importing common/filter.

> +3+0 records in
> +2+0 records out
> -- 
> 2.40.1
>
Chao Yu Oct. 28, 2024, 9:47 a.m. UTC | #2 
On 2024/10/25 11:44, Zorro Lang wrote:
> On Wed, Oct 23, 2024 at 04:16:01PM +0800, Chao Yu wrote:
>> This is a regression test to check whether f2fs handles dirty
>> data correctly when checkpoint is disabled, if lfs mode is on,
>> it will trigger OPU for all overwritten data, this will cost
>> free segments, so f2fs must account overwritten data as OPU
>> data when calculating free space, otherwise, it may run out
>> of free segments in f2fs' allocation function, resulting in
>> panic.
>>
>> Cc: Jaegeuk Kim <jaegeuk@kernel.org>
>> Signed-off-by: Chao Yu <chao@kernel.org>
>> ---
>> v2:
>> - add _fixed_by_kernel_commit()
>> - use _scratch_mkfs_sized() rather than formating size-specified
>> loop device
>> - code cleanup
>>   tests/f2fs/006     | 38 ++++++++++++++++++++++++++++++++++++++
>>   tests/f2fs/006.out |  6 ++++++
>>   2 files changed, 44 insertions(+)
>>   create mode 100755 tests/f2fs/006
>>   create mode 100644 tests/f2fs/006.out
>>
>> diff --git a/tests/f2fs/006 b/tests/f2fs/006
>> new file mode 100755
>> index 00000000..63d00018
>> --- /dev/null
>> +++ b/tests/f2fs/006
>> @@ -0,0 +1,38 @@
>> +#! /bin/bash
>> +# SPDX-License-Identifier: GPL-2.0
>> +# Copyright (c) 2024 Oppo.  All Rights Reserved.
>> +#
>> +# FS QA Test No. f2fs/006
>> +#
>> +# This is a regression test to check whether f2fs handles dirty
>> +# data correctly when checkpoint is disabled, if lfs mode is on,
>> +# it will trigger OPU for all overwritten data, this will cost
>> +# free segments, so f2fs must account overwritten data as OPU
>> +# data when calculating free space, otherwise, it may run out
>> +# of free segments in f2fs' allocation function, resulting in
>> +# panic.
>> +#
>> +. ./common/preamble
>> +_begin_fstest auto quick
>> +
>> +_fixed_by_kernel_commit xxxxxxxxxxxx \
>> +	"f2fs: fix to account dirty data in __get_secs_required()"
>> +
>> +testfile=$SCRATCH_MNT/testfile
>> +
>> +_require_scratch
>> +_scratch_mkfs_sized $((1024*1024*100)) >> $seqres.full
>> +
>> +# use mode=lfs to let f2fs always triggers OPU
>> +_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
>> +
>> +dd if=/dev/zero of=$testfile bs=1M count=50 2>/dev/null
>> +
>> +# it may run out of free space of f2fs and hang kernel
>> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
>> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
> 
> What kind of failure should be printed at here if test on unfixed kernel?

It will panic kernel w/o fix, can you please check dmesg?

> I got:
> 
> # diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad|less
> --- /root/git/xfstests/tests/f2fs/006.out       2024-10-25 11:33:54.693883281 +0800
> +++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-25 11:34:55.907252401 +0800
> @@ -1,6 +1,6 @@
>   QA output created by 006
>   50+0 records in
>   50+0 records out
> -dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
> -3+0 records in
> -2+0 records out
> +dd: fsync failed for '/mnt/scratch/testfile': Input/output error
> +50+0 records in
> +50+0 records out
> 
> Does that mean the bug is reproduced?
 > >> +
>> +_scratch_remount checkpoint=enable
>> +
>> +status=0
>> +exit
>> diff --git a/tests/f2fs/006.out b/tests/f2fs/006.out
>> new file mode 100644
>> index 00000000..0d7b3910
>> --- /dev/null
>> +++ b/tests/f2fs/006.out
>> @@ -0,0 +1,6 @@
>> +QA output created by 006
>> +50+0 records in
>> +50+0 records out
>> +dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
> 
> The "/mnt/scratch_f2fs" should be SCRATCH_MNT, please use _filter_scratch()
> by importing common/filter.

Correct, let me fix this.

Thanks,

> 
>> +3+0 records in
>> +2+0 records out
>> -- 
>> 2.40.1
>>
>
Zorro Lang Oct. 28, 2024, 1:12 p.m. UTC | #3 
On Mon, Oct 28, 2024 at 05:47:06PM +0800, Chao Yu wrote:
> On 2024/10/25 11:44, Zorro Lang wrote:
> > On Wed, Oct 23, 2024 at 04:16:01PM +0800, Chao Yu wrote:
> > > This is a regression test to check whether f2fs handles dirty
> > > data correctly when checkpoint is disabled, if lfs mode is on,
> > > it will trigger OPU for all overwritten data, this will cost
> > > free segments, so f2fs must account overwritten data as OPU
> > > data when calculating free space, otherwise, it may run out
> > > of free segments in f2fs' allocation function, resulting in
> > > panic.
> > > 
> > > Cc: Jaegeuk Kim <jaegeuk@kernel.org>
> > > Signed-off-by: Chao Yu <chao@kernel.org>
> > > ---
> > > v2:
> > > - add _fixed_by_kernel_commit()
> > > - use _scratch_mkfs_sized() rather than formating size-specified
> > > loop device
> > > - code cleanup
> > >   tests/f2fs/006     | 38 ++++++++++++++++++++++++++++++++++++++
> > >   tests/f2fs/006.out |  6 ++++++
> > >   2 files changed, 44 insertions(+)
> > >   create mode 100755 tests/f2fs/006
> > >   create mode 100644 tests/f2fs/006.out
> > > 
> > > diff --git a/tests/f2fs/006 b/tests/f2fs/006
> > > new file mode 100755
> > > index 00000000..63d00018
> > > --- /dev/null
> > > +++ b/tests/f2fs/006
> > > @@ -0,0 +1,38 @@
> > > +#! /bin/bash
> > > +# SPDX-License-Identifier: GPL-2.0
> > > +# Copyright (c) 2024 Oppo.  All Rights Reserved.
> > > +#
> > > +# FS QA Test No. f2fs/006
> > > +#
> > > +# This is a regression test to check whether f2fs handles dirty
> > > +# data correctly when checkpoint is disabled, if lfs mode is on,
> > > +# it will trigger OPU for all overwritten data, this will cost
> > > +# free segments, so f2fs must account overwritten data as OPU
> > > +# data when calculating free space, otherwise, it may run out
> > > +# of free segments in f2fs' allocation function, resulting in
> > > +# panic.
> > > +#
> > > +. ./common/preamble
> > > +_begin_fstest auto quick
> > > +
> > > +_fixed_by_kernel_commit xxxxxxxxxxxx \
> > > +	"f2fs: fix to account dirty data in __get_secs_required()"
> > > +
> > > +testfile=$SCRATCH_MNT/testfile
> > > +
> > > +_require_scratch
> > > +_scratch_mkfs_sized $((1024*1024*100)) >> $seqres.full
> > > +
> > > +# use mode=lfs to let f2fs always triggers OPU
> > > +_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
> > > +
> > > +dd if=/dev/zero of=$testfile bs=1M count=50 2>/dev/null
> > > +
> > > +# it may run out of free space of f2fs and hang kernel
> > > +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
> > > +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
> > 
> > What kind of failure should be printed at here if test on unfixed kernel?
> 
> It will panic kernel w/o fix, can you please check dmesg?

The dmesg as below [2]. But it hit EIO [1], rather than ENOSPC, and didn't hang.
If it's the same issue, or another issue, I think we can explain it in above comment.

Thanks,
Zorro


[1]
# diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad
--- /root/git/xfstests/tests/f2fs/006.out       2024-10-28 20:51:08.381020424 +0800
+++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-28 20:54:33.252246497 +0800
@@ -1,6 +1,6 @@
 QA output created by 006
 50+0 records in
 50+0 records out
-dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
-3+0 records in
-2+0 records out
+dd: fsync failed for '/mnt/scratch/testfile': Input/output error
+50+0 records in
+50+0 records out

[2]
[3370744.465936] run fstests f2fs/006 at 2024-10-28 20:54:27
[3370746.308401] F2FS-fs (sda6): Adjust unusable cap for checkpoint=disable = 1530 / 10%
[3370746.318664] F2FS-fs (sda6): Found nat_bits in checkpoint
[3370746.341354] F2FS-fs (sda6): Start checkpoint disabled!
[3370746.347782] F2FS-fs (sda6): Mounted with checkpoint version = 355eea66
[3370747.846817] F2FS-fs (sda6): Stopped filesystem due to reason: 7
[3370747.853002] ------------[ cut here ]------------
[3370747.857826] WARNING: CPU: 1 PID: 791405 at fs/f2fs/segment.c:2748 new_curseg+0xc7e/0x1ef0 [f2fs]
[3370747.866938] Modules linked in: f2fs crc32_generic lz4hc_compress lz4_compress dm_thin_pool dm_persistent_data dm_bio_prison dm_log_writes xfs mlx5_ib ib_uverbs macsec ib_core nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib intel_rapl_msr intel_rapl_common nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 intel_uncore_frequency nft_reject intel_uncore_frequency_common i10nm_edac skx_edac_common nft_ct nfit x86_pkg_temp_thermal intel_powerclamp nft_chain_nat nf_nat coretemp rfkill nf_conntrack nf_defrag_ipv6 kvm_intel nf_defrag_ipv4 snd_pcsp mlx5_core dax_hmem snd_pcm kvm ip_set cxl_acpi snd_timer spi_nor dell_pc iTCO_wdt rapl cxl_core intel_pmc_bxt snd dell_smbios acpi_power_meter iTCO_vendor_support mtd mlxfw ipmi_ssif intel_cstate platform_profile nf_tables dcdbas nd_pmem isst_if_mmio isst_if_mbox_pci psample dax_pmem nd_btt intel_uncore dell_wmi_descriptor wmi_bmof einj soundcore tls mei_me tg3 intel_th_gth spi_intel_pci i2c_i801 isst_if_common pci_hyperv_intf mei spi_intel intel_th_pci i2c_smbus intel_pch_thermal
[3370747.867283]  ipmi_si intel_th intel_vsec acpi_ipmi ipmi_devintf ipmi_msghandler fuse loop nfnetlink zram crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 nd_e820 sha256_ssse3 libnvdimm sha1_ssse3 megaraid_sas mgag200 i2c_algo_bit wmi [last unloaded: scsi_debug]
[3370747.985397] CPU: 1 UID: 0 PID: 791405 Comm: dd Tainted: G        W         -------  ---  6.11.0-0.rc6.49.fc42.x86_64+debug #1
[3370747.996895] Tainted: [W]=WARN
[3370748.000067] Hardware name: Dell Inc. PowerEdge R750/0PJ80M, BIOS 1.5.4 12/17/2021
[3370748.007747] RIP: 0010:new_curseg+0xc7e/0x1ef0 [f2fs]
[3370748.012949] Code: 8e 38 0b 00 00 3b ab d8 11 00 00 0f 82 b3 f8 ff ff 48 8b 7c 24 28 e8 f1 26 5b f0 ba 07 00 00 00 31 f6 48 89 df e8 42 6b f7 ff <0f> 0b be 08 00 00 00 48 8d bb 20 01 00 00 e8 3f db d1 ed f0 80 8b
[3370748.031898] RSP: 0018:ffa00000365cea90 EFLAGS: 00010296
[3370748.037323] RAX: 0000000000000000 RBX: ff1100110a61c000 RCX: 0000000000000000
[3370748.044656] RDX: 0000000000000033 RSI: ffffffffb2c56fe0 RDI: fff3fc0006cb9d23
[3370748.051989] RBP: 000000000000002a R08: 0000000000000001 R09: fff3fc0006cb9ce8
[3370748.059319] R10: ffa00000365ce747 R11: 0000000000000000 R12: 0000000000000001
[3370748.066652] R13: ff110009482c4178 R14: ff11001096338e00 R15: ffe21c02214c3a3b
[3370748.073984] FS:  00007f9d7a3d4740(0000) GS:ff11002031000000(0000) knlGS:0000000000000000
[3370748.082269] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[3370748.088211] CR2: 000056272e350c08 CR3: 0000001100088002 CR4: 0000000000771ef0
[3370748.095546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[3370748.102906] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[3370748.110236] PKRU: 55555554
[3370748.113149] Call Trace:
[3370748.115800]  <TASK>
[3370748.118106]  ? __warn.cold+0x5b/0x1af
[3370748.121975]  ? new_curseg+0xc7e/0x1ef0 [f2fs]
[3370748.126575]  ? report_bug+0x1fc/0x3d0
[3370748.130449]  ? handle_bug+0x3c/0x80
[3370748.134141]  ? exc_invalid_op+0x17/0x40
[3370748.138181]  ? asm_exc_invalid_op+0x1a/0x20
[3370748.142591]  ? new_curseg+0xc7e/0x1ef0 [f2fs]
[3370748.147200]  ? update_segment_mtime+0x144/0x4c0 [f2fs]
[3370748.152591]  f2fs_allocate_data_block+0xbc9/0x4070 [f2fs]
[3370748.158244]  ? mark_lock+0xf5/0x16d0
[3370748.162021]  ? __pfx___lock_acquire+0x10/0x10
[3370748.166603]  ? __pfx_f2fs_allocate_data_block+0x10/0x10 [f2fs]
[3370748.172676]  ? __pfx___get_segment_type+0x10/0x10 [f2fs]
[3370748.178231]  ? folio_memcg_unlock+0x61/0x120
[3370748.182707]  ? local_clock_noinstr+0xd/0x100
[3370748.187191]  do_write_page+0x156/0xdf0 [f2fs]
[3370748.191789]  ? __pfx___update_extent_cache+0x10/0x10 [f2fs]
[3370748.197596]  ? mark_held_locks+0x94/0xe0
[3370748.201727]  ? __pfx_do_write_page+0x10/0x10 [f2fs]
[3370748.206865]  ? __folio_start_writeback+0x266/0x870
[3370748.211873]  f2fs_outplace_write_data+0x198/0x310 [f2fs]
[3370748.217419]  ? __pfx_f2fs_outplace_write_data+0x10/0x10 [f2fs]
[3370748.223503]  f2fs_do_write_data_page+0xaf9/0x1120 [f2fs]
[3370748.229175]  ? __pfx_f2fs_do_write_data_page+0x10/0x10 [f2fs]
[3370748.235176]  ? __pfx___lock_acquire+0x10/0x10
[3370748.239748]  f2fs_write_single_data_page+0xf9f/0x16e0 [f2fs]
[3370748.245674]  ? __pfx_f2fs_write_single_data_page+0x10/0x10 [f2fs]
[3370748.252007]  ? local_clock_noinstr+0xd/0x100
[3370748.256482]  ? folio_clear_dirty_for_io+0x20b/0x5b0
[3370748.261567]  ? local_clock_noinstr+0xd/0x100
[3370748.266081]  f2fs_write_cache_pages+0xa46/0x1ec0 [f2fs]
[3370748.271573]  ? __pfx_f2fs_write_cache_pages+0x10/0x10 [f2fs]
[3370748.277486]  ? __pfx___lock_acquire+0x10/0x10
[3370748.282051]  ? mark_lock+0xf5/0x16d0
[3370748.285869]  ? f2fs_write_data_pages+0x844/0xc00 [f2fs]
[3370748.291352]  ? rcu_is_watching+0x12/0xc0
[3370748.295482]  ? trace_contention_end+0xd4/0x110
[3370748.300190]  f2fs_write_data_pages+0x85d/0xc00 [f2fs]
[3370748.305491]  ? __pfx_f2fs_write_data_pages+0x10/0x10 [f2fs]
[3370748.311293]  ? __pfx___lock_acquire+0x10/0x10
[3370748.315889]  do_writepages+0x176/0x780
[3370748.319860]  ? __pfx_do_writepages+0x10/0x10
[3370748.324329]  ? filemap_fdatawrite_wbc+0xd3/0x180
[3370748.329162]  ? do_raw_spin_unlock+0x58/0x1f0
[3370748.333641]  ? _raw_spin_unlock+0x2d/0x50
[3370748.337859]  ? wbc_attach_and_unlock_inode+0x3da/0x7d0
[3370748.343204]  filemap_fdatawrite_wbc+0x113/0x180
[3370748.347939]  __filemap_fdatawrite_range+0xaf/0xf0
[3370748.352855]  ? __pfx___filemap_fdatawrite_range+0x10/0x10
[3370748.358515]  ? __pfx_lock_release+0x10/0x10
[3370748.362909]  file_write_and_wait_range+0x9b/0x110
[3370748.367819]  f2fs_do_sync_file+0x27b/0x1ab0 [f2fs]
[3370748.372882]  ? __pfx_f2fs_do_sync_file+0x10/0x10 [f2fs]
[3370748.378348]  ? __pfx_vfs_read+0x10/0x10
[3370748.382452]  ? __mark_inode_dirty+0x6ef/0x9d0
[3370748.387018]  ? ksys_read+0xfb/0x1d0
[3370748.390715]  ? vfs_fsync_range+0x11b/0x220
[3370748.395024]  __x64_sys_fsync+0x59/0xa0
[3370748.398980]  do_syscall_64+0x97/0x190
[3370748.402861]  ? __pfx_ksys_read+0x10/0x10
[3370748.406995]  ? lockdep_hardirqs_on_prepare+0x171/0x400
[3370748.412336]  ? do_syscall_64+0xa3/0x190
[3370748.416380]  ? lockdep_hardirqs_on+0x7c/0x100
[3370748.420941]  ? do_syscall_64+0xa3/0x190
[3370748.424981]  ? lockdep_hardirqs_on_prepare+0x171/0x400
[3370748.430324]  ? do_syscall_64+0xa3/0x190
[3370748.434364]  ? lockdep_hardirqs_on+0x7c/0x100
[3370748.438924]  ? do_syscall_64+0xa3/0x190
[3370748.442969]  ? do_syscall_64+0xa3/0x190
[3370748.447009]  ? lockdep_hardirqs_on_prepare+0x171/0x400
[3370748.452349]  ? do_syscall_64+0xa3/0x190
[3370748.456394]  ? lockdep_hardirqs_on+0x7c/0x100
[3370748.460953]  ? do_syscall_64+0xa3/0x190
[3370748.464994]  ? do_syscall_64+0xa3/0x190
[3370748.469039]  ? lockdep_hardirqs_on_prepare+0x171/0x400
[3370748.474380]  ? do_syscall_64+0xa3/0x190
[3370748.478427]  ? lockdep_hardirqs_on+0x7c/0x100
[3370748.483043]  ? clear_bhb_loop+0x25/0x80
[3370748.487082]  ? clear_bhb_loop+0x25/0x80
[3370748.491127]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[3370748.496383] RIP: 0033:0x7f9d7a4c11a4
[3370748.500187] Code: 00 00 0f 1f 40 00 f3 0f 1e fa 48 8b 3d 9d 5c 10 00 e9 10 73 f1 ff f3 0f 1e fa 80 3d c5 5e 10 00 00 74 13 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 4
8 89 e5 48 83 ec 10 89 7d
[3370748.519133] RSP: 002b:00007fff6c1e62c8 EFLAGS: 00000202 ORIG_RAX: 000000000000004a
[3370748.526905] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d7a4c11a4
[3370748.534239] RDX: 0000000000000032 RSI: 0000000000000000 RDI: 0000000000000001
[3370748.541568] RBP: 00007fff6c1e6320 R08: 0000000000000000 R09: 00007f9d7a60c380
[3370748.548932] R10: 0000000000000022 R11: 0000000000000202 R12: 00007f9d7a3d46c8
[3370748.556268] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000032
[3370748.563625]  </TASK>
[3370748.566016] irq event stamp: 342211
[3370748.569711] hardirqs last  enabled at (342221): [<ffffffffaf41b9f6>] console_unlock+0x236/0x2c0
[3370748.578611] hardirqs last disabled at (342230): [<ffffffffaf41b9db>] console_unlock+0x21b/0x2c0
[3370748.587504] softirqs last  enabled at (342178): [<ffffffffaf247c3b>] __irq_exit_rcu+0xbb/0x1c0
[3370748.596307] softirqs last disabled at (342157): [<ffffffffaf247c3b>] __irq_exit_rcu+0xbb/0x1c0
[3370748.605115] ---[ end trace 0000000000000000 ]---
[3370748.792483] F2FS-fs (sda6): Adjust unusable cap for checkpoint=disable = 1530 / 10%
[3370750.194429] F2FS-fs (sda6): Disable nat_bits due to incorrect cp_ver (4137321793606052454, 18446744073709551615)
[3370750.259391] F2FS-fs (sda6): Mounted with checkpoint version = 355eea67


> 
> > I got:
> > 
> > # diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad|less
> > --- /root/git/xfstests/tests/f2fs/006.out       2024-10-25 11:33:54.693883281 +0800
> > +++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-25 11:34:55.907252401 +0800
> > @@ -1,6 +1,6 @@
> >   QA output created by 006
> >   50+0 records in
> >   50+0 records out
> > -dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
> > -3+0 records in
> > -2+0 records out
> > +dd: fsync failed for '/mnt/scratch/testfile': Input/output error
> > +50+0 records in
> > +50+0 records out
> > 
> > Does that mean the bug is reproduced?
> > >> +
> > > +_scratch_remount checkpoint=enable
> > > +
> > > +status=0
> > > +exit
> > > diff --git a/tests/f2fs/006.out b/tests/f2fs/006.out
> > > new file mode 100644
> > > index 00000000..0d7b3910
> > > --- /dev/null
> > > +++ b/tests/f2fs/006.out
> > > @@ -0,0 +1,6 @@
> > > +QA output created by 006
> > > +50+0 records in
> > > +50+0 records out
> > > +dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
> > 
> > The "/mnt/scratch_f2fs" should be SCRATCH_MNT, please use _filter_scratch()
> > by importing common/filter.
> 
> Correct, let me fix this.
> 
> Thanks,
> 
> > 
> > > +3+0 records in
> > > +2+0 records out
> > > -- 
> > > 2.40.1
> > > 
> > 
>
Chao Yu Oct. 28, 2024, 1:41 p.m. UTC | #4 
On 2024/10/28 21:12, Zorro Lang wrote:
> On Mon, Oct 28, 2024 at 05:47:06PM +0800, Chao Yu wrote:
>> On 2024/10/25 11:44, Zorro Lang wrote:
>>> On Wed, Oct 23, 2024 at 04:16:01PM +0800, Chao Yu wrote:
>>>> This is a regression test to check whether f2fs handles dirty
>>>> data correctly when checkpoint is disabled, if lfs mode is on,
>>>> it will trigger OPU for all overwritten data, this will cost
>>>> free segments, so f2fs must account overwritten data as OPU
>>>> data when calculating free space, otherwise, it may run out
>>>> of free segments in f2fs' allocation function, resulting in
>>>> panic.
>>>>
>>>> Cc: Jaegeuk Kim <jaegeuk@kernel.org>
>>>> Signed-off-by: Chao Yu <chao@kernel.org>
>>>> ---
>>>> v2:
>>>> - add _fixed_by_kernel_commit()
>>>> - use _scratch_mkfs_sized() rather than formating size-specified
>>>> loop device
>>>> - code cleanup
>>>>    tests/f2fs/006     | 38 ++++++++++++++++++++++++++++++++++++++
>>>>    tests/f2fs/006.out |  6 ++++++
>>>>    2 files changed, 44 insertions(+)
>>>>    create mode 100755 tests/f2fs/006
>>>>    create mode 100644 tests/f2fs/006.out
>>>>
>>>> diff --git a/tests/f2fs/006 b/tests/f2fs/006
>>>> new file mode 100755
>>>> index 00000000..63d00018
>>>> --- /dev/null
>>>> +++ b/tests/f2fs/006
>>>> @@ -0,0 +1,38 @@
>>>> +#! /bin/bash
>>>> +# SPDX-License-Identifier: GPL-2.0
>>>> +# Copyright (c) 2024 Oppo.  All Rights Reserved.
>>>> +#
>>>> +# FS QA Test No. f2fs/006
>>>> +#
>>>> +# This is a regression test to check whether f2fs handles dirty
>>>> +# data correctly when checkpoint is disabled, if lfs mode is on,
>>>> +# it will trigger OPU for all overwritten data, this will cost
>>>> +# free segments, so f2fs must account overwritten data as OPU
>>>> +# data when calculating free space, otherwise, it may run out
>>>> +# of free segments in f2fs' allocation function, resulting in
>>>> +# panic.
>>>> +#
>>>> +. ./common/preamble
>>>> +_begin_fstest auto quick
>>>> +
>>>> +_fixed_by_kernel_commit xxxxxxxxxxxx \
>>>> +	"f2fs: fix to account dirty data in __get_secs_required()"
>>>> +
>>>> +testfile=$SCRATCH_MNT/testfile
>>>> +
>>>> +_require_scratch
>>>> +_scratch_mkfs_sized $((1024*1024*100)) >> $seqres.full
>>>> +
>>>> +# use mode=lfs to let f2fs always triggers OPU
>>>> +_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
>>>> +
>>>> +dd if=/dev/zero of=$testfile bs=1M count=50 2>/dev/null
>>>> +
>>>> +# it may run out of free space of f2fs and hang kernel
>>>> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
>>>> +dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
>>>
>>> What kind of failure should be printed at here if test on unfixed kernel?
>>
>> It will panic kernel w/o fix, can you please check dmesg?
> 
> The dmesg as below [2]. But it hit EIO [1], rather than ENOSPC, and didn't hang.
> If it's the same issue, or another issue, I think we can explain it in above comment.

It's the same issue, let me explain more about this.

You will encounter kernel hang after you enable CONFIG_F2FS_CHECK_FS config.

Thanks,

> 
> Thanks,
> Zorro
> 
> 
> [1]
> # diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad
> --- /root/git/xfstests/tests/f2fs/006.out       2024-10-28 20:51:08.381020424 +0800
> +++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-28 20:54:33.252246497 +0800
> @@ -1,6 +1,6 @@
>   QA output created by 006
>   50+0 records in
>   50+0 records out
> -dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
> -3+0 records in
> -2+0 records out
> +dd: fsync failed for '/mnt/scratch/testfile': Input/output error
> +50+0 records in
> +50+0 records out
> 
> [2]
> [3370744.465936] run fstests f2fs/006 at 2024-10-28 20:54:27
> [3370746.308401] F2FS-fs (sda6): Adjust unusable cap for checkpoint=disable = 1530 / 10%
> [3370746.318664] F2FS-fs (sda6): Found nat_bits in checkpoint
> [3370746.341354] F2FS-fs (sda6): Start checkpoint disabled!
> [3370746.347782] F2FS-fs (sda6): Mounted with checkpoint version = 355eea66
> [3370747.846817] F2FS-fs (sda6): Stopped filesystem due to reason: 7
> [3370747.853002] ------------[ cut here ]------------
> [3370747.857826] WARNING: CPU: 1 PID: 791405 at fs/f2fs/segment.c:2748 new_curseg+0xc7e/0x1ef0 [f2fs]
> [3370747.866938] Modules linked in: f2fs crc32_generic lz4hc_compress lz4_compress dm_thin_pool dm_persistent_data dm_bio_prison dm_log_writes xfs mlx5_ib ib_uverbs macsec ib_core nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib intel_rapl_msr intel_rapl_common nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 intel_uncore_frequency nft_reject intel_uncore_frequency_common i10nm_edac skx_edac_common nft_ct nfit x86_pkg_temp_thermal intel_powerclamp nft_chain_nat nf_nat coretemp rfkill nf_conntrack nf_defrag_ipv6 kvm_intel nf_defrag_ipv4 snd_pcsp mlx5_core dax_hmem snd_pcm kvm ip_set cxl_acpi snd_timer spi_nor dell_pc iTCO_wdt rapl cxl_core intel_pmc_bxt snd dell_smbios acpi_power_meter iTCO_vendor_support mtd mlxfw ipmi_ssif intel_cstate platform_profile nf_tables dcdbas nd_pmem isst_if_mmio isst_if_mbox_pci psample dax_pmem nd_btt intel_uncore dell_wmi_descriptor wmi_bmof einj soundcore tls mei_me tg3 intel_th_gth spi_intel_pci i2c_i801 isst_if_common pci_hyperv_intf mei spi_intel intel_th_pci i2c_smbus intel_pch_thermal
> [3370747.867283]  ipmi_si intel_th intel_vsec acpi_ipmi ipmi_devintf ipmi_msghandler fuse loop nfnetlink zram crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 nd_e820 sha256_ssse3 libnvdimm sha1_ssse3 megaraid_sas mgag200 i2c_algo_bit wmi [last unloaded: scsi_debug]
> [3370747.985397] CPU: 1 UID: 0 PID: 791405 Comm: dd Tainted: G        W         -------  ---  6.11.0-0.rc6.49.fc42.x86_64+debug #1
> [3370747.996895] Tainted: [W]=WARN
> [3370748.000067] Hardware name: Dell Inc. PowerEdge R750/0PJ80M, BIOS 1.5.4 12/17/2021
> [3370748.007747] RIP: 0010:new_curseg+0xc7e/0x1ef0 [f2fs]
> [3370748.012949] Code: 8e 38 0b 00 00 3b ab d8 11 00 00 0f 82 b3 f8 ff ff 48 8b 7c 24 28 e8 f1 26 5b f0 ba 07 00 00 00 31 f6 48 89 df e8 42 6b f7 ff <0f> 0b be 08 00 00 00 48 8d bb 20 01 00 00 e8 3f db d1 ed f0 80 8b
> [3370748.031898] RSP: 0018:ffa00000365cea90 EFLAGS: 00010296
> [3370748.037323] RAX: 0000000000000000 RBX: ff1100110a61c000 RCX: 0000000000000000
> [3370748.044656] RDX: 0000000000000033 RSI: ffffffffb2c56fe0 RDI: fff3fc0006cb9d23
> [3370748.051989] RBP: 000000000000002a R08: 0000000000000001 R09: fff3fc0006cb9ce8
> [3370748.059319] R10: ffa00000365ce747 R11: 0000000000000000 R12: 0000000000000001
> [3370748.066652] R13: ff110009482c4178 R14: ff11001096338e00 R15: ffe21c02214c3a3b
> [3370748.073984] FS:  00007f9d7a3d4740(0000) GS:ff11002031000000(0000) knlGS:0000000000000000
> [3370748.082269] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [3370748.088211] CR2: 000056272e350c08 CR3: 0000001100088002 CR4: 0000000000771ef0
> [3370748.095546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [3370748.102906] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [3370748.110236] PKRU: 55555554
> [3370748.113149] Call Trace:
> [3370748.115800]  <TASK>
> [3370748.118106]  ? __warn.cold+0x5b/0x1af
> [3370748.121975]  ? new_curseg+0xc7e/0x1ef0 [f2fs]
> [3370748.126575]  ? report_bug+0x1fc/0x3d0
> [3370748.130449]  ? handle_bug+0x3c/0x80
> [3370748.134141]  ? exc_invalid_op+0x17/0x40
> [3370748.138181]  ? asm_exc_invalid_op+0x1a/0x20
> [3370748.142591]  ? new_curseg+0xc7e/0x1ef0 [f2fs]
> [3370748.147200]  ? update_segment_mtime+0x144/0x4c0 [f2fs]
> [3370748.152591]  f2fs_allocate_data_block+0xbc9/0x4070 [f2fs]
> [3370748.158244]  ? mark_lock+0xf5/0x16d0
> [3370748.162021]  ? __pfx___lock_acquire+0x10/0x10
> [3370748.166603]  ? __pfx_f2fs_allocate_data_block+0x10/0x10 [f2fs]
> [3370748.172676]  ? __pfx___get_segment_type+0x10/0x10 [f2fs]
> [3370748.178231]  ? folio_memcg_unlock+0x61/0x120
> [3370748.182707]  ? local_clock_noinstr+0xd/0x100
> [3370748.187191]  do_write_page+0x156/0xdf0 [f2fs]
> [3370748.191789]  ? __pfx___update_extent_cache+0x10/0x10 [f2fs]
> [3370748.197596]  ? mark_held_locks+0x94/0xe0
> [3370748.201727]  ? __pfx_do_write_page+0x10/0x10 [f2fs]
> [3370748.206865]  ? __folio_start_writeback+0x266/0x870
> [3370748.211873]  f2fs_outplace_write_data+0x198/0x310 [f2fs]
> [3370748.217419]  ? __pfx_f2fs_outplace_write_data+0x10/0x10 [f2fs]
> [3370748.223503]  f2fs_do_write_data_page+0xaf9/0x1120 [f2fs]
> [3370748.229175]  ? __pfx_f2fs_do_write_data_page+0x10/0x10 [f2fs]
> [3370748.235176]  ? __pfx___lock_acquire+0x10/0x10
> [3370748.239748]  f2fs_write_single_data_page+0xf9f/0x16e0 [f2fs]
> [3370748.245674]  ? __pfx_f2fs_write_single_data_page+0x10/0x10 [f2fs]
> [3370748.252007]  ? local_clock_noinstr+0xd/0x100
> [3370748.256482]  ? folio_clear_dirty_for_io+0x20b/0x5b0
> [3370748.261567]  ? local_clock_noinstr+0xd/0x100
> [3370748.266081]  f2fs_write_cache_pages+0xa46/0x1ec0 [f2fs]
> [3370748.271573]  ? __pfx_f2fs_write_cache_pages+0x10/0x10 [f2fs]
> [3370748.277486]  ? __pfx___lock_acquire+0x10/0x10
> [3370748.282051]  ? mark_lock+0xf5/0x16d0
> [3370748.285869]  ? f2fs_write_data_pages+0x844/0xc00 [f2fs]
> [3370748.291352]  ? rcu_is_watching+0x12/0xc0
> [3370748.295482]  ? trace_contention_end+0xd4/0x110
> [3370748.300190]  f2fs_write_data_pages+0x85d/0xc00 [f2fs]
> [3370748.305491]  ? __pfx_f2fs_write_data_pages+0x10/0x10 [f2fs]
> [3370748.311293]  ? __pfx___lock_acquire+0x10/0x10
> [3370748.315889]  do_writepages+0x176/0x780
> [3370748.319860]  ? __pfx_do_writepages+0x10/0x10
> [3370748.324329]  ? filemap_fdatawrite_wbc+0xd3/0x180
> [3370748.329162]  ? do_raw_spin_unlock+0x58/0x1f0
> [3370748.333641]  ? _raw_spin_unlock+0x2d/0x50
> [3370748.337859]  ? wbc_attach_and_unlock_inode+0x3da/0x7d0
> [3370748.343204]  filemap_fdatawrite_wbc+0x113/0x180
> [3370748.347939]  __filemap_fdatawrite_range+0xaf/0xf0
> [3370748.352855]  ? __pfx___filemap_fdatawrite_range+0x10/0x10
> [3370748.358515]  ? __pfx_lock_release+0x10/0x10
> [3370748.362909]  file_write_and_wait_range+0x9b/0x110
> [3370748.367819]  f2fs_do_sync_file+0x27b/0x1ab0 [f2fs]
> [3370748.372882]  ? __pfx_f2fs_do_sync_file+0x10/0x10 [f2fs]
> [3370748.378348]  ? __pfx_vfs_read+0x10/0x10
> [3370748.382452]  ? __mark_inode_dirty+0x6ef/0x9d0
> [3370748.387018]  ? ksys_read+0xfb/0x1d0
> [3370748.390715]  ? vfs_fsync_range+0x11b/0x220
> [3370748.395024]  __x64_sys_fsync+0x59/0xa0
> [3370748.398980]  do_syscall_64+0x97/0x190
> [3370748.402861]  ? __pfx_ksys_read+0x10/0x10
> [3370748.406995]  ? lockdep_hardirqs_on_prepare+0x171/0x400
> [3370748.412336]  ? do_syscall_64+0xa3/0x190
> [3370748.416380]  ? lockdep_hardirqs_on+0x7c/0x100
> [3370748.420941]  ? do_syscall_64+0xa3/0x190
> [3370748.424981]  ? lockdep_hardirqs_on_prepare+0x171/0x400
> [3370748.430324]  ? do_syscall_64+0xa3/0x190
> [3370748.434364]  ? lockdep_hardirqs_on+0x7c/0x100
> [3370748.438924]  ? do_syscall_64+0xa3/0x190
> [3370748.442969]  ? do_syscall_64+0xa3/0x190
> [3370748.447009]  ? lockdep_hardirqs_on_prepare+0x171/0x400
> [3370748.452349]  ? do_syscall_64+0xa3/0x190
> [3370748.456394]  ? lockdep_hardirqs_on+0x7c/0x100
> [3370748.460953]  ? do_syscall_64+0xa3/0x190
> [3370748.464994]  ? do_syscall_64+0xa3/0x190
> [3370748.469039]  ? lockdep_hardirqs_on_prepare+0x171/0x400
> [3370748.474380]  ? do_syscall_64+0xa3/0x190
> [3370748.478427]  ? lockdep_hardirqs_on+0x7c/0x100
> [3370748.483043]  ? clear_bhb_loop+0x25/0x80
> [3370748.487082]  ? clear_bhb_loop+0x25/0x80
> [3370748.491127]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
> [3370748.496383] RIP: 0033:0x7f9d7a4c11a4
> [3370748.500187] Code: 00 00 0f 1f 40 00 f3 0f 1e fa 48 8b 3d 9d 5c 10 00 e9 10 73 f1 ff f3 0f 1e fa 80 3d c5 5e 10 00 00 74 13 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 4
> 8 89 e5 48 83 ec 10 89 7d
> [3370748.519133] RSP: 002b:00007fff6c1e62c8 EFLAGS: 00000202 ORIG_RAX: 000000000000004a
> [3370748.526905] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d7a4c11a4
> [3370748.534239] RDX: 0000000000000032 RSI: 0000000000000000 RDI: 0000000000000001
> [3370748.541568] RBP: 00007fff6c1e6320 R08: 0000000000000000 R09: 00007f9d7a60c380
> [3370748.548932] R10: 0000000000000022 R11: 0000000000000202 R12: 00007f9d7a3d46c8
> [3370748.556268] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000032
> [3370748.563625]  </TASK>
> [3370748.566016] irq event stamp: 342211
> [3370748.569711] hardirqs last  enabled at (342221): [<ffffffffaf41b9f6>] console_unlock+0x236/0x2c0
> [3370748.578611] hardirqs last disabled at (342230): [<ffffffffaf41b9db>] console_unlock+0x21b/0x2c0
> [3370748.587504] softirqs last  enabled at (342178): [<ffffffffaf247c3b>] __irq_exit_rcu+0xbb/0x1c0
> [3370748.596307] softirqs last disabled at (342157): [<ffffffffaf247c3b>] __irq_exit_rcu+0xbb/0x1c0
> [3370748.605115] ---[ end trace 0000000000000000 ]---
> [3370748.792483] F2FS-fs (sda6): Adjust unusable cap for checkpoint=disable = 1530 / 10%
> [3370750.194429] F2FS-fs (sda6): Disable nat_bits due to incorrect cp_ver (4137321793606052454, 18446744073709551615)
> [3370750.259391] F2FS-fs (sda6): Mounted with checkpoint version = 355eea67
> 
> 
>>
>>> I got:
>>>
>>> # diff -u /root/git/xfstests/tests/f2fs/006.out /root/git/xfstests/results//default/f2fs/006.out.bad|less
>>> --- /root/git/xfstests/tests/f2fs/006.out       2024-10-25 11:33:54.693883281 +0800
>>> +++ /root/git/xfstests/results//default/f2fs/006.out.bad        2024-10-25 11:34:55.907252401 +0800
>>> @@ -1,6 +1,6 @@
>>>    QA output created by 006
>>>    50+0 records in
>>>    50+0 records out
>>> -dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
>>> -3+0 records in
>>> -2+0 records out
>>> +dd: fsync failed for '/mnt/scratch/testfile': Input/output error
>>> +50+0 records in
>>> +50+0 records out
>>>
>>> Does that mean the bug is reproduced?
>>>>> +
>>>> +_scratch_remount checkpoint=enable
>>>> +
>>>> +status=0
>>>> +exit
>>>> diff --git a/tests/f2fs/006.out b/tests/f2fs/006.out
>>>> new file mode 100644
>>>> index 00000000..0d7b3910
>>>> --- /dev/null
>>>> +++ b/tests/f2fs/006.out
>>>> @@ -0,0 +1,6 @@
>>>> +QA output created by 006
>>>> +50+0 records in
>>>> +50+0 records out
>>>> +dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
>>>
>>> The "/mnt/scratch_f2fs" should be SCRATCH_MNT, please use _filter_scratch()
>>> by importing common/filter.
>>
>> Correct, let me fix this.
>>
>> Thanks,
>>
>>>
>>>> +3+0 records in
>>>> +2+0 records out
>>>> -- 
>>>> 2.40.1
>>>>
>>>
>>
>
diff mbox series

Patch

diff --git a/tests/f2fs/006 b/tests/f2fs/006
new file mode 100755
index 00000000..63d00018
--- /dev/null
+++ b/tests/f2fs/006
@@ -0,0 +1,38 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Oppo.  All Rights Reserved.
+#
+# FS QA Test No. f2fs/006
+#
+# This is a regression test to check whether f2fs handles dirty
+# data correctly when checkpoint is disabled, if lfs mode is on,
+# it will trigger OPU for all overwritten data, this will cost
+# free segments, so f2fs must account overwritten data as OPU
+# data when calculating free space, otherwise, it may run out
+# of free segments in f2fs' allocation function, resulting in
+# panic.
+#
+. ./common/preamble
+_begin_fstest auto quick
+
+_fixed_by_kernel_commit xxxxxxxxxxxx \
+	"f2fs: fix to account dirty data in __get_secs_required()"
+
+testfile=$SCRATCH_MNT/testfile
+
+_require_scratch
+_scratch_mkfs_sized $((1024*1024*100)) >> $seqres.full
+
+# use mode=lfs to let f2fs always triggers OPU
+_scratch_mount -o mode=lfs,checkpoint=disable:10%,noinline_dentry >> $seqres.full
+
+dd if=/dev/zero of=$testfile bs=1M count=50 2>/dev/null
+
+# it may run out of free space of f2fs and hang kernel
+dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
+dd if=/dev/zero of=$testfile bs=1M count=50 conv=notrunc conv=fsync
+
+_scratch_remount checkpoint=enable
+
+status=0
+exit
diff --git a/tests/f2fs/006.out b/tests/f2fs/006.out
new file mode 100644
index 00000000..0d7b3910
--- /dev/null
+++ b/tests/f2fs/006.out
@@ -0,0 +1,6 @@ 
+QA output created by 006
+50+0 records in
+50+0 records out
+dd: error writing '/mnt/scratch_f2fs/testfile': No space left on device
+3+0 records in
+2+0 records out