在 2023/10/6 0:05, Darrick J. Wong 写道:
On Thu, Oct 05, 2023 at 04:53:12PM +0800, Shiyang Ruan wrote:
在 2023/10/5 8:08, Darrick J. Wong 写道:
Sorry, I sent the list below to Chandan, didn't cc the maillist
because it's just a rough list rather than a PR:
1. subject: [v3] xfs: correct calculation for agend and blockcount
url:
https://lore.kernel.org/linux-xfs/20230913102942.601271-1-ruansy.fnst@xxxxxxxxxxx/
note: This one is a fix patch for commit: 5cf32f63b0f4 ("xfs:
fix the calculation for "end" and "length"").
It can solve the fail of xfs/55[0-2]: the programs
accessing the DAX file may not be notified as expected,
because the length always 1 block less than actual. Then
this patch fixes this.
2. subject: [v15] mm, pmem, xfs: Introduce MF_MEM_PRE_REMOVE for unbind
url:
https://lore.kernel.org/linux-xfs/20230928103227.250550-1-ruansy.fnst@xxxxxxxxxxx/T/#u
note: This is a feature patch. It handles the pre-remove event
of DAX device, by notifying kernel/user space before actually
removing.
It has been picked by Andrew in his
mm-hotfixes-unstable. I am not sure whether you or he will
merge this one.
3. subject: [v1] xfs: drop experimental warning for FSDAX
url:
https://lore.kernel.org/linux-xfs/20230915063854.1784918-1-ruansy.fnst@xxxxxxxxxxx/
note: With the patches mentioned above, I did a lot of tests,
including xfstests and blackbox tests, the FSDAX function looks
good now. So I think the experimental warning could be dropped.
Darrick/Dave, Could you please review the above patch and let us know if you
have any objections?
The first two patches are ok. The third one ... well I was about to say
ok but then this happened with generic/269 on a 6.6-rc4 kernel and those
two patches applied:
Hi Darrick,
Thanks for testing. I just tested this case (generic/269) on v6.6-rc4 with
my 3 patches again, but it didn't fail. Such WARNING message didn't show in
dmesg too.
My local.config is shown as below:
[nodax_reflink]
export FSTYP=xfs
export TEST_DEV=/dev/pmem0
export TEST_DIR=/mnt/test
export SCRATCH_DEV=/dev/pmem1
export SCRATCH_MNT=/mnt/scratch
export MKFS_OPTIONS="-m reflink=1,rmapbt=1"
[dax_reflink]
export FSTYP=xfs
export TEST_DEV=/dev/pmem0
export TEST_DIR=/mnt/test
export SCRATCH_DEV=/dev/pmem1
export SCRATCH_MNT=/mnt/scratch
export MKFS_OPTIONS="-m reflink=1,rmapbt=1"
export MOUNT_OPTIONS="-o dax"
export TEST_FS_MOUNT_OPTS="-o dax"
And tools version are:
- xfstests (v2023.09.03)
Same here.
- xfsprogs (v6.4.0)
I have a newer branch, though it only contains resyncs with newer kernel
versions and bugfixes.
Could you show me more info (such as kernel config, local.config) ? So that
I can find out what exactly is going wrong.
The full xml output from fstests is here:
https://djwong.org/fstests/output/.fa9f295c6a2dd4426aa26b4d74e8e0299ad2307507547d5444c157f0e883df92/.2e718425eda716ad848ae05dfab82a670af351f314e26b3cb658a929331bf2eb/result.xml
I think the key difference between your setup and mine is that
MKFS_OPTIONS includes '-d daxinherit=1' and MOUNT_OPTIONS do not include
-o dax. That shouldn't make any difference, though.
Also: In the weeks leading up to me adding the PREREMOVE patches a
couple of days ago, no test (generic/269 or otherwise) hit that ASSERT.
I'm wondering if that means that the preremove code isn't shooting down
a page mapping or something?
Grepping through the result.xml reveals:
$ grep -E '(generic.269|xfs.55[012])' /tmp/result.xml
563: <testcase classname="xfstests.global" name="xfs/550" time="2">
910: <testcase classname="xfstests.global" name="xfs/552" time="2">
1685: <testcase classname="xfstests.global" name="generic/269" time="23">
1686: <failure message="_check_dmesg: something found in dmesg (see /var/tmp/fstests/generic/269.dmesg)" type="TestFail"/>
1689:[ 6046.844058] run fstests generic/269 at 2023-10-04 15:26:57
2977: <testcase classname="xfstests.global" name="xfs/551" time="2">
So it's possible that 550 or 552 messed this up for us. :/
See attached kconfig.
Thanks for the info. I tried to make my environment same as yours, but
still couldn't reproduce the fail. I also let xfs/550 & xfs/552 ran
before generic/269.
[root@f38 xfst]# ./check -s nodax_reflink -r xfs/550 xfs/552 generic/269
SECTION -- nodax_reflink
FSTYP -- xfs (debug)
PLATFORM -- Linux/x86_64 f38 6.6.0-rc4 #365 SMP PREEMPT_DYNAMIC Sun
Oct 8 15:19:36 CST 2023
MKFS_OPTIONS -- -f -m reflink=1,rmapbt=1 -d daxinherit=1 /dev/pmem1
MOUNT_OPTIONS -- -o usrquota,grpquota,prjquota, /dev/pmem1 /mnt/scratch
xfs/550 2s ... 2s
xfs/552 2s ... 1s
generic/269 22s ... 23s
Ran: xfs/550 xfs/552 generic/269
Passed all 3 tests
SECTION -- nodax_reflink
=========================
Ran: xfs/550 xfs/552 generic/269
Passed all 3 tests
And xfs/269 is testing fsstress & dd on a scratch device at the same
time. It won't reach the PREREMOVE code or xfs' notify failure code.
I'd like to know what your git tree looks like, is it *v6.6-rc4 + my
patches only* ? Does it contain other patches?
--
Thanks,
Ruan.
--D
--
Thanks,
Ruan.
