Re: [PATCH] generic: check logical-sector sized O_DIRECT

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On Wed, Feb 28, 2024 at 05:41:40PM -0800, Darrick J. Wong wrote:
> On Thu, Feb 29, 2024 at 08:52:18AM +0800, Zorro Lang wrote:
> > On Wed, Feb 28, 2024 at 07:59:29AM -0800, Darrick J. Wong wrote:
> > > On Mon, Nov 07, 2022 at 12:56:18PM +0800, Zorro Lang wrote:
> > > > If the physical sector size is 4096, but the logical sector size
> > > > is 512, the 512b dio write/read should be allowed.
> > > 
> > > Huh, did we all completely forget to review this patch?
> > 
> > Hmm?? This patch has been reviewed and merged in 2022, refer to g/704.
> > Why did it appear (be refreshed) at here suddenly ?
> 
> Doh!
> 
> Sorry, I saw this patch sitting by itself with no replies or "Hey I
> merged this" messages and thought we'd forgotten it.

Thanks for taking care this test :)

There was a RVB for this patch:
https://lore.kernel.org/fstests/20221107105309.khksga5m7p766sed@xxxxxxxxxxxxxxxxxxx/

This remind me that I still have some patches in my local branch, they were
not merged by some reasons. I'll check if some of them are suitable for now :)

Thanks,
Zorro

> 
> And if it's running without problems (I haven't seen any in generic/704)
> then I'll leave well enough alone.
> 
> --D
> 
> > > 
> > > > Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx>
> > > > ---
> > > > 
> > > > Hi,
> > > > 
> > > > This reproducer was written for xfs, I try to make it to be a generic
> > > > test case for localfs. Current it test passed on xfs, extN and btrfs,
> > > > the bug can be reproduced on old rhel-6.6 [1]. If it's not right for
> > > > someone fs, please feel free to tell me.
> > > > 
> > > > Thanks,
> > > > Zorro
> > > > 
> > > > [1]
> > > > # ./check generic/888
> > > > FSTYP         -- xfs (non-debug)
> > > > PLATFORM      -- Linux/x86_64 xxx-xxxxx-xxxxxx 2.6.32-504.el6.x86_64
> > > > MKFS_OPTIONS  -- -f -bsize=4096 /dev/loop1
> > > > MOUNT_OPTIONS -- -o context=system_u:object_r:nfs_t:s0 /dev/loop1 /mnt/scratch
> > > > 
> > > > generic/888      - output mismatch (see /root/xfstests-dev/results//generic/888.out.bad)
> > > >     --- tests/generic/888.out   2022-11-06 23:42:44.683040977 -0500
> > > >     +++ /root/xfstests-dev/results//generic/888.out.bad 2022-11-06 23:48:33.986481844 -0500
> > > >     @@ -4,3 +4,4 @@
> > > >      512
> > > >      mkfs and mount
> > > >      DIO read/write 512 bytes
> > > >     +pwrite64: Invalid argument
> > > >     ...
> > > >     (Run 'diff -u tests/generic/888.out /root/xfstests-dev/results//generic/888.out.bad'  to see the entire diff)
> > > > Ran: generic/888
> > > > Failures: generic/888
> > > > Failed 1 of 1 tests
> > > > 
> > > >  tests/generic/888     | 52 +++++++++++++++++++++++++++++++++++++++++++
> > > >  tests/generic/888.out |  6 +++++
> > > >  2 files changed, 58 insertions(+)
> > > >  create mode 100755 tests/generic/888
> > > >  create mode 100644 tests/generic/888.out
> > > > 
> > > > diff --git a/tests/generic/888 b/tests/generic/888
> > > > new file mode 100755
> > > > index 00000000..b5075d1e
> > > > --- /dev/null
> > > > +++ b/tests/generic/888
> > > > @@ -0,0 +1,52 @@
> > > > +#! /bin/bash
> > > > +# SPDX-License-Identifier: GPL-2.0
> > > > +# Copyright (c) 2022 Red Hat, Inc.  All Rights Reserved.
> > > > +#
> > > > +# FS QA Test No. 888
> > > > +#
> > > > +# Make sure logical-sector sized O_DIRECT write is allowed
> > > > +#
> > > > +. ./common/preamble
> > > > +_begin_fstest auto quick
> > > > +
> > > > +# Override the default cleanup function.
> > > > +_cleanup()
> > > > +{
> > > > +	cd /
> > > > +	rm -r -f $tmp.*
> > > > +	[ -d "$SCSI_DEBUG_MNT" ] && $UMOUNT_PROG $SCSI_DEBUG_MNT 2>/dev/null
> > > > +	_put_scsi_debug_dev
> > > > +}
> > > > +
> > > > +# Import common functions.
> > > > +. ./common/scsi_debug
> > > > +
> > > > +# real QA test starts here
> > > > +_supported_fs generic
> > > > +_fixed_by_kernel_commit 7c71ee78031c "xfs: allow logical-sector sized O_DIRECT"
> > > > +_require_scsi_debug
> > > > +# If TEST_DEV is block device, make sure current fs is a localfs which can be
> > > > +# written on scsi_debug device
> > > > +_require_test
> > > > +_require_block_device $TEST_DEV
> > > 
> > > _require_odirect?
> > > 
> > > > +
> > > > +echo "Get a device with 4096 physical sector size and 512 logical sector size"
> > > > +SCSI_DEBUG_DEV=`_get_scsi_debug_dev 4096 512 0 256`
> > > > +blockdev --getpbsz --getss $SCSI_DEBUG_DEV
> > > > +
> > > > +echo "mkfs and mount"
> > > > +_mkfs_dev $SCSI_DEBUG_DEV || _fail "Can't make $FSTYP on scsi_debug device"
> > > > +SCSI_DEBUG_MNT="$TEST_DIR/scsi_debug_$seq"
> > > > +rm -rf $SCSI_DEBUG_MNT
> > > > +mkdir $SCSI_DEBUG_MNT
> > > > +run_check _mount $SCSI_DEBUG_DEV $SCSI_DEBUG_MNT
> > > 
> > > /me wonders, should we try to use $MKFS_OPTIONS and $MOUNT_OPTIONS
> > > on the scsidebug device?  To catch cases where the config actually
> > > matters for that kind of thing?
> > 
> > It's been merged, if we need to change something, better to send a new
> > patch to change that :)
> > 
> > Thanks,
> > Zorro
> > 
> > > 
> > > --D
> > > 
> > > > +
> > > > +echo "DIO read/write 512 bytes"
> > > > +# This dio write should succeed, even the physical sector size is 4096, but
> > > > +# the logical sector size is 512
> > > > +$XFS_IO_PROG -d -f -c "pwrite 0 512" $SCSI_DEBUG_MNT/testfile >> $seqres.full
> > > > +$XFS_IO_PROG -d -c "pread 0 512" $SCSI_DEBUG_MNT/testfile >> $seqres.full
> > > > +
> > > > +# success, all done
> > > > +status=0
> > > > +exit
> > > > diff --git a/tests/generic/888.out b/tests/generic/888.out
> > > > new file mode 100644
> > > > index 00000000..0f142ce9
> > > > --- /dev/null
> > > > +++ b/tests/generic/888.out
> > > > @@ -0,0 +1,6 @@
> > > > +QA output created by 888
> > > > +Get a device with 4096 physical sector size and 512 logical sector size
> > > > +4096
> > > > +512
> > > > +mkfs and mount
> > > > +DIO read/write 512 bytes
> > > > -- 
> > > > 2.31.1
> > > > 
> > > 
> > 
> 





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