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* [PATCH] generic/175, generic/176: cleanup testdir before exit
@ 2020-01-13  3:24 Murphy Zhou
  2020-01-13 22:42 ` Darrick J. Wong
  0 siblings, 1 reply; 7+ messages in thread
From: Murphy Zhou @ 2020-01-13  3:24 UTC (permalink / raw)
  To: fstests; +Cc: Murphy Zhou

Usually the _mkfs helper will cleanup these directories at the
beginning of testcase. However, when testing on NFS, the cleanup
could be very slow and it is confusing that: We have already
started to run generic/176 but we get stuck in _mkfs, cleaning
up files left by the previous testcase generic/175.

To be clear, cleanup testdir before exit.

Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
---
 tests/generic/175 | 1 +
 tests/generic/176 | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tests/generic/175 b/tests/generic/175
index 79e5b3d6..bd966a28 100755
--- a/tests/generic/175
+++ b/tests/generic/175
@@ -61,6 +61,7 @@ bytes=$((blks * blksz))
 echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
 _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
 
+rm -rf $testdir
 # success, all done
 status=0
 exit
diff --git a/tests/generic/176 b/tests/generic/176
index a084578a..bc83762e 100755
--- a/tests/generic/176
+++ b/tests/generic/176
@@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
 echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
 _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
 
+rm -rf $testdir
 # success, all done
 status=0
 exit
-- 
2.20.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-13  3:24 [PATCH] generic/175, generic/176: cleanup testdir before exit Murphy Zhou
@ 2020-01-13 22:42 ` Darrick J. Wong
  2020-01-15  4:21   ` Murphy Zhou
  0 siblings, 1 reply; 7+ messages in thread
From: Darrick J. Wong @ 2020-01-13 22:42 UTC (permalink / raw)
  To: Murphy Zhou; +Cc: fstests

On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> Usually the _mkfs helper will cleanup these directories at the
> beginning of testcase. However, when testing on NFS, the cleanup
> could be very slow and it is confusing that: We have already
> started to run generic/176 but we get stuck in _mkfs, cleaning
> up files left by the previous testcase generic/175.

Isn't this a general problem with the way nfs handles "mkfs" on scratch
devices?  So you'd want to fix this once by doing the cleanup between
tests instead of playing whackamole with whatever crazy file tests we
think of next?

> To be clear, cleanup testdir before exit.
> 
> Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> ---
>  tests/generic/175 | 1 +
>  tests/generic/176 | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/tests/generic/175 b/tests/generic/175
> index 79e5b3d6..bd966a28 100755
> --- a/tests/generic/175
> +++ b/tests/generic/175
> @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
>  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
>  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
>  
> +rm -rf $testdir

Or put another way, this probably ought to be in _try_wipe_scratch_devs()

--D

>  # success, all done
>  status=0
>  exit
> diff --git a/tests/generic/176 b/tests/generic/176
> index a084578a..bc83762e 100755
> --- a/tests/generic/176
> +++ b/tests/generic/176
> @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
>  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
>  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
>  
> +rm -rf $testdir
>  # success, all done
>  status=0
>  exit
> -- 
> 2.20.1
> 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-13 22:42 ` Darrick J. Wong
@ 2020-01-15  4:21   ` Murphy Zhou
  2020-01-15 17:19     ` Darrick J. Wong
  0 siblings, 1 reply; 7+ messages in thread
From: Murphy Zhou @ 2020-01-15  4:21 UTC (permalink / raw)
  To: Darrick J. Wong; +Cc: Murphy Zhou, fstests

On Mon, Jan 13, 2020 at 02:42:03PM -0800, Darrick J. Wong wrote:
> On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> > Usually the _mkfs helper will cleanup these directories at the
> > beginning of testcase. However, when testing on NFS, the cleanup
> > could be very slow and it is confusing that: We have already
> > started to run generic/176 but we get stuck in _mkfs, cleaning
> > up files left by the previous testcase generic/175.
> 
> Isn't this a general problem with the way nfs handles "mkfs" on scratch
> devices?  So you'd want to fix this once by doing the cleanup between
> tests instead of playing whackamole with whatever crazy file tests we
> think of next?

Hmm, it's hard to tell. Deleting these files at anywhere makes sense.
This patch is hardly a "fix", just trying to make it more clear.

> 
> > To be clear, cleanup testdir before exit.
> > 
> > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > ---
> >  tests/generic/175 | 1 +
> >  tests/generic/176 | 1 +
> >  2 files changed, 2 insertions(+)
> > 
> > diff --git a/tests/generic/175 b/tests/generic/175
> > index 79e5b3d6..bd966a28 100755
> > --- a/tests/generic/175
> > +++ b/tests/generic/175
> > @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
> >  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
> >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> >  
> > +rm -rf $testdir
> 
> Or put another way, this probably ought to be in _try_wipe_scratch_devs()

That's for devices I believe..

Thanks,
Murphy

> 
> --D
> 
> >  # success, all done
> >  status=0
> >  exit
> > diff --git a/tests/generic/176 b/tests/generic/176
> > index a084578a..bc83762e 100755
> > --- a/tests/generic/176
> > +++ b/tests/generic/176
> > @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
> >  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
> >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> >  
> > +rm -rf $testdir
> >  # success, all done
> >  status=0
> >  exit
> > -- 
> > 2.20.1
> > 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-15  4:21   ` Murphy Zhou
@ 2020-01-15 17:19     ` Darrick J. Wong
  2020-01-16  7:45       ` Murphy Zhou
  0 siblings, 1 reply; 7+ messages in thread
From: Darrick J. Wong @ 2020-01-15 17:19 UTC (permalink / raw)
  To: Murphy Zhou; +Cc: fstests

On Wed, Jan 15, 2020 at 12:21:32PM +0800, Murphy Zhou wrote:
> On Mon, Jan 13, 2020 at 02:42:03PM -0800, Darrick J. Wong wrote:
> > On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> > > Usually the _mkfs helper will cleanup these directories at the
> > > beginning of testcase. However, when testing on NFS, the cleanup
> > > could be very slow and it is confusing that: We have already
> > > started to run generic/176 but we get stuck in _mkfs, cleaning
> > > up files left by the previous testcase generic/175.
> > 
> > Isn't this a general problem with the way nfs handles "mkfs" on scratch
> > devices?  So you'd want to fix this once by doing the cleanup between
> > tests instead of playing whackamole with whatever crazy file tests we
> > think of next?
> 
> Hmm, it's hard to tell. Deleting these files at anywhere makes sense.
> This patch is hardly a "fix", just trying to make it more clear.
> 
> > 
> > > To be clear, cleanup testdir before exit.
> > > 
> > > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > > ---
> > >  tests/generic/175 | 1 +
> > >  tests/generic/176 | 1 +
> > >  2 files changed, 2 insertions(+)
> > > 
> > > diff --git a/tests/generic/175 b/tests/generic/175
> > > index 79e5b3d6..bd966a28 100755
> > > --- a/tests/generic/175
> > > +++ b/tests/generic/175
> > > @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
> > >  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
> > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > >  
> > > +rm -rf $testdir
> > 
> > Or put another way, this probably ought to be in _try_wipe_scratch_devs()
> 
> That's for devices I believe..

It exists to zap the scratch devices into enough of a clean state that
whatever contents a test wrote to the scratch devices cannot easily
(e.g. mount) leak into the next test.  IOWs, exactly where you'd want
FSTYP=NFS to delete whatever junk is in the scratch mount.

Plus then you get a clean nfs scratch mount at the start of each test
without needing to whackamole each test.

> Thanks,
> Murphy
> 
> > 
> > --D
> > 
> > >  # success, all done
> > >  status=0
> > >  exit
> > > diff --git a/tests/generic/176 b/tests/generic/176
> > > index a084578a..bc83762e 100755
> > > --- a/tests/generic/176
> > > +++ b/tests/generic/176
> > > @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
> > >  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
> > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > >  
> > > +rm -rf $testdir

Also this will massively slow down generic/17[56] on btrfs/XFS
considering that we don't care about deleting the massively reflinked
file we created.

--D

> > >  # success, all done
> > >  status=0
> > >  exit
> > > -- 
> > > 2.20.1
> > > 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-15 17:19     ` Darrick J. Wong
@ 2020-01-16  7:45       ` Murphy Zhou
  2020-01-16 15:52         ` Darrick J. Wong
  0 siblings, 1 reply; 7+ messages in thread
From: Murphy Zhou @ 2020-01-16  7:45 UTC (permalink / raw)
  To: Darrick J. Wong; +Cc: Murphy Zhou, fstests

On Wed, Jan 15, 2020 at 09:19:23AM -0800, Darrick J. Wong wrote:
> On Wed, Jan 15, 2020 at 12:21:32PM +0800, Murphy Zhou wrote:
> > On Mon, Jan 13, 2020 at 02:42:03PM -0800, Darrick J. Wong wrote:
> > > On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> > > > Usually the _mkfs helper will cleanup these directories at the
> > > > beginning of testcase. However, when testing on NFS, the cleanup
> > > > could be very slow and it is confusing that: We have already
> > > > started to run generic/176 but we get stuck in _mkfs, cleaning
> > > > up files left by the previous testcase generic/175.
> > > 
> > > Isn't this a general problem with the way nfs handles "mkfs" on scratch
> > > devices?  So you'd want to fix this once by doing the cleanup between
> > > tests instead of playing whackamole with whatever crazy file tests we
> > > think of next?
> > 
> > Hmm, it's hard to tell. Deleting these files at anywhere makes sense.
> > This patch is hardly a "fix", just trying to make it more clear.
> > 
> > > 
> > > > To be clear, cleanup testdir before exit.
> > > > 
> > > > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > > > ---
> > > >  tests/generic/175 | 1 +
> > > >  tests/generic/176 | 1 +
> > > >  2 files changed, 2 insertions(+)
> > > > 
> > > > diff --git a/tests/generic/175 b/tests/generic/175
> > > > index 79e5b3d6..bd966a28 100755
> > > > --- a/tests/generic/175
> > > > +++ b/tests/generic/175
> > > > @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
> > > >  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
> > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > >  
> > > > +rm -rf $testdir
> > > 
> > > Or put another way, this probably ought to be in _try_wipe_scratch_devs()
> > 
> > That's for devices I believe..
> 
> It exists to zap the scratch devices into enough of a clean state that
> whatever contents a test wrote to the scratch devices cannot easily
> (e.g. mount) leak into the next test.  IOWs, exactly where you'd want
> FSTYP=NFS to delete whatever junk is in the scratch mount.
> 
> Plus then you get a clean nfs scratch mount at the start of each test
> without needing to whackamole each test.
> 
> > Thanks,
> > Murphy
> > 
> > > 
> > > --D
> > > 
> > > >  # success, all done
> > > >  status=0
> > > >  exit
> > > > diff --git a/tests/generic/176 b/tests/generic/176
> > > > index a084578a..bc83762e 100755
> > > > --- a/tests/generic/176
> > > > +++ b/tests/generic/176
> > > > @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
> > > >  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
> > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > >  
> > > > +rm -rf $testdir
> 
> Also this will massively slow down generic/17[56] on btrfs/XFS
> considering that we don't care about deleting the massively reflinked
> file we created.

Deleting them would be a good testcase to me. After all the tests,
deleting them should not cause any problem, or spending to much
time. Leaving them behind and letting them get formatted by mkfs,
definitely will be faster, but may make potential problems not
discovered.


If you think the deleting will be extremely slow, maybe it's time
to optimize how xfs deleting reflinked files.

Thanks,
Murphy

> 
> --D
> 
> > > >  # success, all done
> > > >  status=0
> > > >  exit
> > > > -- 
> > > > 2.20.1
> > > > 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-16  7:45       ` Murphy Zhou
@ 2020-01-16 15:52         ` Darrick J. Wong
  2020-01-17 10:04           ` Murphy Zhou
  0 siblings, 1 reply; 7+ messages in thread
From: Darrick J. Wong @ 2020-01-16 15:52 UTC (permalink / raw)
  To: Murphy Zhou; +Cc: fstests

On Thu, Jan 16, 2020 at 03:45:09PM +0800, Murphy Zhou wrote:
> On Wed, Jan 15, 2020 at 09:19:23AM -0800, Darrick J. Wong wrote:
> > On Wed, Jan 15, 2020 at 12:21:32PM +0800, Murphy Zhou wrote:
> > > On Mon, Jan 13, 2020 at 02:42:03PM -0800, Darrick J. Wong wrote:
> > > > On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> > > > > Usually the _mkfs helper will cleanup these directories at the
> > > > > beginning of testcase. However, when testing on NFS, the cleanup
> > > > > could be very slow and it is confusing that: We have already
> > > > > started to run generic/176 but we get stuck in _mkfs, cleaning
> > > > > up files left by the previous testcase generic/175.
> > > > 
> > > > Isn't this a general problem with the way nfs handles "mkfs" on scratch
> > > > devices?  So you'd want to fix this once by doing the cleanup between
> > > > tests instead of playing whackamole with whatever crazy file tests we
> > > > think of next?
> > > 
> > > Hmm, it's hard to tell. Deleting these files at anywhere makes sense.
> > > This patch is hardly a "fix", just trying to make it more clear.
> > > 
> > > > 
> > > > > To be clear, cleanup testdir before exit.
> > > > > 
> > > > > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > > > > ---
> > > > >  tests/generic/175 | 1 +
> > > > >  tests/generic/176 | 1 +
> > > > >  2 files changed, 2 insertions(+)
> > > > > 
> > > > > diff --git a/tests/generic/175 b/tests/generic/175
> > > > > index 79e5b3d6..bd966a28 100755
> > > > > --- a/tests/generic/175
> > > > > +++ b/tests/generic/175
> > > > > @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
> > > > >  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
> > > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > > >  
> > > > > +rm -rf $testdir
> > > > 
> > > > Or put another way, this probably ought to be in _try_wipe_scratch_devs()
> > > 
> > > That's for devices I believe..
> > 
> > It exists to zap the scratch devices into enough of a clean state that
> > whatever contents a test wrote to the scratch devices cannot easily
> > (e.g. mount) leak into the next test.  IOWs, exactly where you'd want
> > FSTYP=NFS to delete whatever junk is in the scratch mount.
> > 
> > Plus then you get a clean nfs scratch mount at the start of each test
> > without needing to whackamole each test.
> > 
> > > Thanks,
> > > Murphy
> > > 
> > > > 
> > > > --D
> > > > 
> > > > >  # success, all done
> > > > >  status=0
> > > > >  exit
> > > > > diff --git a/tests/generic/176 b/tests/generic/176
> > > > > index a084578a..bc83762e 100755
> > > > > --- a/tests/generic/176
> > > > > +++ b/tests/generic/176
> > > > > @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
> > > > >  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
> > > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > > >  
> > > > > +rm -rf $testdir
> > 
> > Also this will massively slow down generic/17[56] on btrfs/XFS
> > considering that we don't care about deleting the massively reflinked
> > file we created.
> 
> Deleting them would be a good testcase to me. After all the tests,
> deleting them should not cause any problem, or spending to much
> time. Leaving them behind and letting them get formatted by mkfs,
> definitely will be faster, but may make potential problems not
> discovered.

In that case, please rewrite the commit message to say that we're
enhancing this stress test to include inactivation of the files it
creates.

> If you think the deleting will be extremely slow, maybe it's time
> to optimize how xfs deleting reflinked files.

They already exist & have been out for review for years:

https://lore.kernel.org/linux-xfs/157784092020.1362752.15046503361741521784.stgit@magnolia/

--D

> 
> Thanks,
> Murphy
> 
> > 
> > --D
> > 
> > > > >  # success, all done
> > > > >  status=0
> > > > >  exit
> > > > > -- 
> > > > > 2.20.1
> > > > > 

^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [PATCH] generic/175, generic/176: cleanup testdir before exit
  2020-01-16 15:52         ` Darrick J. Wong
@ 2020-01-17 10:04           ` Murphy Zhou
  0 siblings, 0 replies; 7+ messages in thread
From: Murphy Zhou @ 2020-01-17 10:04 UTC (permalink / raw)
  To: Darrick J. Wong; +Cc: Murphy Zhou, fstests

On Thu, Jan 16, 2020 at 07:52:33AM -0800, Darrick J. Wong wrote:
> On Thu, Jan 16, 2020 at 03:45:09PM +0800, Murphy Zhou wrote:
> > On Wed, Jan 15, 2020 at 09:19:23AM -0800, Darrick J. Wong wrote:
> > > On Wed, Jan 15, 2020 at 12:21:32PM +0800, Murphy Zhou wrote:
> > > > On Mon, Jan 13, 2020 at 02:42:03PM -0800, Darrick J. Wong wrote:
> > > > > On Mon, Jan 13, 2020 at 11:24:09AM +0800, Murphy Zhou wrote:
> > > > > > Usually the _mkfs helper will cleanup these directories at the
> > > > > > beginning of testcase. However, when testing on NFS, the cleanup
> > > > > > could be very slow and it is confusing that: We have already
> > > > > > started to run generic/176 but we get stuck in _mkfs, cleaning
> > > > > > up files left by the previous testcase generic/175.
> > > > > 
> > > > > Isn't this a general problem with the way nfs handles "mkfs" on scratch
> > > > > devices?  So you'd want to fix this once by doing the cleanup between
> > > > > tests instead of playing whackamole with whatever crazy file tests we
> > > > > think of next?
> > > > 
> > > > Hmm, it's hard to tell. Deleting these files at anywhere makes sense.
> > > > This patch is hardly a "fix", just trying to make it more clear.
> > > > 
> > > > > 
> > > > > > To be clear, cleanup testdir before exit.
> > > > > > 
> > > > > > Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
> > > > > > ---
> > > > > >  tests/generic/175 | 1 +
> > > > > >  tests/generic/176 | 1 +
> > > > > >  2 files changed, 2 insertions(+)
> > > > > > 
> > > > > > diff --git a/tests/generic/175 b/tests/generic/175
> > > > > > index 79e5b3d6..bd966a28 100755
> > > > > > --- a/tests/generic/175
> > > > > > +++ b/tests/generic/175
> > > > > > @@ -61,6 +61,7 @@ bytes=$((blks * blksz))
> > > > > >  echo "reflinking $blks blocks, $bytes bytes" >> "$seqres.full"
> > > > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > > > >  
> > > > > > +rm -rf $testdir
> > > > > 
> > > > > Or put another way, this probably ought to be in _try_wipe_scratch_devs()
> > > > 
> > > > That's for devices I believe..
> > > 
> > > It exists to zap the scratch devices into enough of a clean state that
> > > whatever contents a test wrote to the scratch devices cannot easily
> > > (e.g. mount) leak into the next test.  IOWs, exactly where you'd want
> > > FSTYP=NFS to delete whatever junk is in the scratch mount.
> > > 
> > > Plus then you get a clean nfs scratch mount at the start of each test
> > > without needing to whackamole each test.
> > > 
> > > > Thanks,
> > > > Murphy
> > > > 
> > > > > 
> > > > > --D
> > > > > 
> > > > > >  # success, all done
> > > > > >  status=0
> > > > > >  exit
> > > > > > diff --git a/tests/generic/176 b/tests/generic/176
> > > > > > index a084578a..bc83762e 100755
> > > > > > --- a/tests/generic/176
> > > > > > +++ b/tests/generic/176
> > > > > > @@ -73,6 +73,7 @@ bytes=$((blocks_needed * blksz))
> > > > > >  echo "reflinking $((blocks_needed / 2)) blocks, $((bytes / 2)) bytes" >> "$seqres.full"
> > > > > >  _reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> "$seqres.full"
> > > > > >  
> > > > > > +rm -rf $testdir
> > > 
> > > Also this will massively slow down generic/17[56] on btrfs/XFS
> > > considering that we don't care about deleting the massively reflinked
> > > file we created.
> > 
> > Deleting them would be a good testcase to me. After all the tests,
> > deleting them should not cause any problem, or spending to much
> > time. Leaving them behind and letting them get formatted by mkfs,
> > definitely will be faster, but may make potential problems not
> > discovered.
> 
> In that case, please rewrite the commit message to say that we're
> enhancing this stress test to include inactivation of the files it
> creates.
> 
> > If you think the deleting will be extremely slow, maybe it's time
> > to optimize how xfs deleting reflinked files.
> 
> They already exist & have been out for review for years:
> 
> https://lore.kernel.org/linux-xfs/157784092020.1362752.15046503361741521784.stgit@magnolia/

Great! Going to run some tests.

Thanks very much for reviewing!

Murphy

> 
> --D
> 
> > 
> > Thanks,
> > Murphy
> > 
> > > 
> > > --D
> > > 
> > > > > >  # success, all done
> > > > > >  status=0
> > > > > >  exit
> > > > > > -- 
> > > > > > 2.20.1
> > > > > > 

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, back to index

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-13  3:24 [PATCH] generic/175, generic/176: cleanup testdir before exit Murphy Zhou
2020-01-13 22:42 ` Darrick J. Wong
2020-01-15  4:21   ` Murphy Zhou
2020-01-15 17:19     ` Darrick J. Wong
2020-01-16  7:45       ` Murphy Zhou
2020-01-16 15:52         ` Darrick J. Wong
2020-01-17 10:04           ` Murphy Zhou

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