linux-ext4 - Re: [PATCHv2 4/4] generic/677: Add a test to check unwritten extents tracking

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Date:   Tue, 29 Mar 2022 17:04:11 +0530
From:   Ritesh Harjani <ritesh.list@...il.com>
To:     "Darrick J. Wong" <djwong@...nel.org>
Cc:     Ritesh Harjani <riteshh@...ux.ibm.com>,
        fstests <fstests@...r.kernel.org>, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2 4/4] generic/677: Add a test to check unwritten extents
 tracking

On 22/03/15 09:56AM, Darrick J. Wong wrote:
> On Tue, Mar 15, 2022 at 07:58:59PM +0530, Ritesh Harjani wrote:
> > With these sequence of operation (in certain cases like with ext4 fast_commit)
> > could miss to track unwritten extents during replay phase
> > (after sudden FS shutdown).
> >
> > This fstest adds a test case to test this.
> >
> > 5e4d0eba1ccaf19f
> > ext4: fix fast commit may miss tracking range for FALLOC_FL_ZERO_RANGE
> >
> > Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
> > ---
> >  tests/generic/677     | 64 +++++++++++++++++++++++++++++++++++++++++++
> >  tests/generic/677.out |  6 ++++
> >  2 files changed, 70 insertions(+)
> >  create mode 100755 tests/generic/677
> >  create mode 100644 tests/generic/677.out
> >
> > diff --git a/tests/generic/677 b/tests/generic/677
> > new file mode 100755
> > index 00000000..e316763a
> > --- /dev/null
> > +++ b/tests/generic/677
> > @@ -0,0 +1,64 @@
> > +#! /bin/bash
> > +# SPDX-License-Identifier: GPL-2.0
> > +# Copyright (c) 2022 IBM Corporation.  All Rights Reserved.
> > +#
> > +# FS QA Test 677
> > +#
> > +# Test below sequence of operation which (w/o below kernel patch) in case of
> > +# ext4 with fast_commit may misss to track unwritten extents.
> > +# commit 5e4d0eba1ccaf19f
> > +# ext4: fix fast commit may miss tracking range for FALLOC_FL_ZERO_RANGE
> > +#
> > +. ./common/preamble
> > +_begin_fstest auto quick log shutdown recoveryloop
> > +
> > +# Override the default cleanup function.
> > +_cleanup()
> > +{
> > +	cd /
> > +	rm -r -f $tmp.*
> > +}
> > +
> > +# Import common functions.
> > +. ./common/filter
> > +. ./common/punch
> > +
> > +# real QA test starts here
> > +
> > +# Modify as appropriate.
> > +_supported_fs generic
> > +_require_scratch
> > +_require_xfs_io_command "fzero"
> > +_require_xfs_io_command "fiemap"
> > +
> > +t1=$SCRATCH_MNT/t1
> > +
> > +_scratch_mkfs > $seqres.full 2>&1
> > +
> > +_scratch_mount >> $seqres.full 2>&1
> > +
> > +bs=$(_get_block_size $SCRATCH_MNT)
>
> Same comments about blocksize, group names, and
> _require_scratch_shutdown as the last patch.

Sure, I will fix blocksize and _require_scratch_shutdown part.
I have added my thoughts above group names in previous patch.

Thanks for reviewing this.

-ritesh